| ☒ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | ||||
| ☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | ||||
| Massachusetts | 84-4199750 | |||||||
| (State or Other Jurisdiction of Incorporation or Organization) | (I.R.S. Employer Identification Number) | |||||||
125 High Street, Boston, Massachusetts | 02110 | |||||||
| (Address of principal executive offices) | (Zip Code) | |||||||
| Title of each class | Trading Symbol | Name of exchange on which registered | ||||||
| Common Stock | EBC | Nasdaq Global Select Market | ||||||
| Large accelerated filer | ☒ | Accelerated filer | ☐ | |||||||||||
| Non-accelerated filer | ☐ | Smaller reporting company | ☐ | |||||||||||
| (Do not check if a smaller reporting company) | Emerging Growth Company | ☐ | ||||||||||||
| Page | |||||
| (In thousands, except per share data) | June 30, 2026 | December 31, 2025 | |||||||||
| ASSETS | |||||||||||
| Cash and due from banks | $ | 175,547 | $ | 126,103 | |||||||
| Short-term investments | 80,616 | 190,766 | |||||||||
| Cash and cash equivalents | 256,163 | 316,869 | |||||||||
| Securities: | |||||||||||
Available for sale (amortized cost $4,400,498 and $4,143,163, respectively) | 4,047,828 | 3,825,569 | |||||||||
Held to maturity (fair value $740,991 and $575,974, respectively) | 764,194 | 599,557 | |||||||||
| Total securities | 4,812,022 | 4,425,126 | |||||||||
| Loans held for sale | 42,649 | 22,761 | |||||||||
| Total loans | 23,713,099 | 23,574,496 | |||||||||
| Allowance for loan losses | (325,354) | (331,841) | |||||||||
| Unearned discounts and deferred fees, net | (431,698) | (489,431) | |||||||||
| Net loans | 22,956,047 | 22,753,224 | |||||||||
| Federal Home Loan Bank stock, at cost | 21,250 | 13,838 | |||||||||
| Premises and equipment | 118,196 | 119,984 | |||||||||
| Bank-owned life insurance | 311,387 | 307,836 | |||||||||
| Goodwill and other intangibles, net | 1,277,643 | 1,300,930 | |||||||||
| Deferred income taxes, net | 293,659 | 309,963 | |||||||||
| Prepaid expenses | 255,237 | 259,929 | |||||||||
| Other assets | 797,702 | 756,396 | |||||||||
| Total assets | $ | 31,141,955 | $ | 30,586,856 | |||||||
| LIABILITIES AND EQUITY | |||||||||||
| Deposits: | |||||||||||
| Demand | $ | 6,540,568 | $ | 6,341,205 | |||||||
| Interest checking accounts | 4,706,543 | 4,727,219 | |||||||||
| Savings accounts | 2,151,300 | 2,010,028 | |||||||||
| Money market investment | 8,207,130 | 7,885,707 | |||||||||
| Certificates of deposit | 4,313,771 | 4,506,592 | |||||||||
| Total deposits | 25,919,312 | 25,470,751 | |||||||||
| Borrowed funds: | |||||||||||
| Interest rate swap collateral funds | 34,181 | 15,321 | |||||||||
| Federal Home Loan Bank advances | 364,412 | 199,617 | |||||||||
| Total borrowed funds | 398,593 | 214,938 | |||||||||
| Other liabilities | 540,836 | 560,614 | |||||||||
| Total liabilities | 26,858,741 | 26,246,303 | |||||||||
| Commitments and contingencies (see Note 10) | — | — | |||||||||
| Shareholders’ equity | |||||||||||
Common shares, $0.01 par value, 1,000,000,000 shares authorized, 228,858,364 and 235,646,558 shares issued and outstanding at June 30, 2026 and December 31, 2025, respectively | 2,289 | 2,356 | |||||||||
| Additional paid in capital | 2,482,957 | 2,621,029 | |||||||||
| Unallocated common shares held by the Employee Stock Ownership Plan | (120,272) | (122,796) | |||||||||
| Retained earnings | 2,176,037 | 2,067,327 | |||||||||
| Accumulated other comprehensive loss, net of tax | (257,797) | (227,363) | |||||||||
| Total shareholders’ equity | 4,283,214 | 4,340,553 | |||||||||
| Total liabilities and shareholders’ equity | $ | 31,141,955 | $ | 30,586,856 | |||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| (In thousands, except per share data) | 2026 | 2025 | 2026 | 2025 | |||||||||||||||||||
| Interest and dividend income: | |||||||||||||||||||||||
| Interest and fees on loans | $ | 308,481 | $ | 241,100 | $ | 610,233 | $ | 469,567 | |||||||||||||||
| Taxable interest and dividends on securities | 35,035 | 34,113 | 68,238 | 65,273 | |||||||||||||||||||
| Non-taxable interest and dividends on securities | 4,619 | 1,767 | 8,200 | 3,209 | |||||||||||||||||||
| Interest on federal funds sold and other short-term investments | 1,774 | 2,359 | 2,784 | 6,995 | |||||||||||||||||||
| Total interest and dividend income | 349,909 | 279,339 | 689,455 | 545,044 | |||||||||||||||||||
| Interest expense: | |||||||||||||||||||||||
| Interest on deposits | 93,039 | 76,706 | 183,474 | 152,704 | |||||||||||||||||||
| Interest on borrowings | 4,938 | 603 | 9,393 | 1,411 | |||||||||||||||||||
| Total interest expense | 97,977 | 77,309 | 192,867 | 154,115 | |||||||||||||||||||
| Net interest income | 251,932 | 202,030 | 496,588 | 390,929 | |||||||||||||||||||
| Provision for allowance for loan losses | 6,755 | 7,600 | 12,511 | 14,200 | |||||||||||||||||||
| Net interest income after provision for allowance for loan losses | 245,177 | 194,430 | 484,077 | 376,729 | |||||||||||||||||||
| Noninterest income (loss): | |||||||||||||||||||||||
| Investment advisory fees | 19,693 | 17,282 | 38,007 | 33,719 | |||||||||||||||||||
| Service charges on deposit accounts | 10,044 | 8,244 | 19,971 | 16,559 | |||||||||||||||||||
| Card income | 6,038 | 4,230 | 11,835 | 8,150 | |||||||||||||||||||
| Interest rate swap income | 1,996 | 978 | 2,979 | 1,466 | |||||||||||||||||||
| Income from investments for employee retirement benefits | 6,958 | 5,727 | 5,098 | 4,470 | |||||||||||||||||||
| Mortgage banking income (loss) | 3,343 | (95) | 6,208 | (187) | |||||||||||||||||||
| Losses on sales of securities available for sale, net | — | — | — | (269,638) | |||||||||||||||||||
| Miscellaneous income and fees | 9,784 | 5,867 | 18,819 | 12,206 | |||||||||||||||||||
| Other non-operating (loss) income | (268) | 618 | (1,772) | (12) | |||||||||||||||||||
| Total noninterest income (loss) | 57,588 | 42,851 | 101,145 | (193,267) | |||||||||||||||||||
| Noninterest expense: | |||||||||||||||||||||||
| Salaries and employee benefits | 97,030 | 80,696 | 199,181 | 160,555 | |||||||||||||||||||
| Occupancy and equipment | 13,246 | 11,230 | 27,357 | 21,847 | |||||||||||||||||||
| Technology and data processing | 23,740 | 18,395 | 47,583 | 36,410 | |||||||||||||||||||
| Professional services | 5,681 | 3,037 | 9,095 | 5,961 | |||||||||||||||||||
| Marketing expenses | 3,098 | 2,432 | 5,794 | 4,164 | |||||||||||||||||||
| FDIC insurance | 3,747 | 3,780 | 7,115 | 7,068 | |||||||||||||||||||
| Amortization of intangible assets | 11,643 | 7,807 | 23,287 | 15,615 | |||||||||||||||||||
| Other operating expenses | 8,213 | 7,002 | 14,849 | 12,879 | |||||||||||||||||||
| Non-operating expenses | 1,550 | 2,582 | 32,317 | 2,582 | |||||||||||||||||||
| Total noninterest expense | 167,948 | 136,961 | 366,578 | 267,081 | |||||||||||||||||||
| Income (loss) before income tax expense | 134,817 | 100,320 | 218,644 | (83,619) | |||||||||||||||||||
| Income tax expense | 29,604 | 87 | 48,169 | 33,814 | |||||||||||||||||||
| Net income (loss) | $ | 105,213 | $ | 100,233 | $ | 170,475 | $ | (117,433) | |||||||||||||||
| Basic earnings (loss) per share | $ | 0.48 | $ | 0.50 | $ | 0.77 | $ | (0.59) | |||||||||||||||
| Diluted earnings (loss) per share | $ | 0.48 | $ | 0.50 | $ | 0.77 | $ | (0.59) | |||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Net income (loss) | $ | 105,213 | $ | 100,233 | $ | 170,475 | $ | (117,433) | |||||||||||||||
| Other comprehensive (loss) income, net of tax: | |||||||||||||||||||||||
| Net change in fair value of securities available for sale | (8,596) | 19,885 | (26,466) | 271,203 | |||||||||||||||||||
| Net change in fair value of cash flow hedges | 231 | 5,458 | (801) | 15,825 | |||||||||||||||||||
Net change in other comprehensive income for defined benefit postretirement plans | (1,584) | (1,091) | (3,167) | (2,226) | |||||||||||||||||||
| Total other comprehensive (loss) income | (9,949) | 24,252 | (30,434) | 284,802 | |||||||||||||||||||
| Total comprehensive income | $ | 95,264 | $ | 124,485 | $ | 140,041 | $ | 167,369 | |||||||||||||||
| Shares of Common Stock Outstanding | Common Stock | Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Unallocated Common Stock Held by ESOP | Total | |||||||||||||||||||||||||||||||||||
| (In thousands, except share data) | |||||||||||||||||||||||||||||||||||||||||
| Balance at March 31, 2025 | 211,560,177 | $ | 2,116 | $ | 2,188,552 | $ | 1,842,607 | $ | (323,779) | $ | (126,562) | $ | 3,582,934 | ||||||||||||||||||||||||||||
Dividends to common shareholders (1) | — | — | — | (25,964) | — | — | (25,964) | ||||||||||||||||||||||||||||||||||
| Issuance of restricted stock awards | 54,236 | 1 | (1) | — | |||||||||||||||||||||||||||||||||||||
| Repurchased common stock | (183,053) | (2) | (3,270) | — | — | — | (3,272) | ||||||||||||||||||||||||||||||||||
Restricted share awards cancelled (2) | (519) | — | (8) | (8) | |||||||||||||||||||||||||||||||||||||
Issuance of common shares under share-based compensation arrangements (3) | 32,455 | — | (402) | — | — | — | (402) | ||||||||||||||||||||||||||||||||||
| Share-based compensation | — | — | 4,245 | — | — | — | 4,245 | ||||||||||||||||||||||||||||||||||
| Net income | — | — | — | 100,233 | — | — | 100,233 | ||||||||||||||||||||||||||||||||||
| Other comprehensive income, net of tax | — | — | — | — | 24,252 | — | 24,252 | ||||||||||||||||||||||||||||||||||
| ESOP shares committed to be released | — | — | 611 | — | — | 1,262 | 1,873 | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2025 | 211,463,296 | $ | 2,115 | $ | 2,189,727 | $ | 1,916,876 | $ | (299,527) | $ | (125,300) | $ | 3,683,891 | ||||||||||||||||||||||||||||
| Balance at March 31, 2026 | 232,292,219 | $ | 2,323 | $ | 2,549,369 | $ | 2,103,663 | $ | (247,848) | $ | (121,527) | $ | 4,285,980 | ||||||||||||||||||||||||||||
Dividends to common shareholders (1) | — | — | — | (32,839) | — | — | (32,839) | ||||||||||||||||||||||||||||||||||
| Issuance of restricted stock awards | 58,245 | 1 | (1) | — | — | — | — | ||||||||||||||||||||||||||||||||||
| Repurchased common stock | (3,629,154) | (36) | (73,664) | — | — | — | (73,700) | ||||||||||||||||||||||||||||||||||
Restricted share awards cancelled (2) | (524) | — | (3) | — | — | — | (3) | ||||||||||||||||||||||||||||||||||
Issuance of common shares under share-based compensation arrangements (3) | 10,186 | — | (91) | — | — | — | (91) | ||||||||||||||||||||||||||||||||||
| Share-based compensation | — | — | 4,439 | — | — | — | 4,439 | ||||||||||||||||||||||||||||||||||
| Stock options exercised | 127,392 | 1 | 1,703 | — | — | — | 1,704 | ||||||||||||||||||||||||||||||||||
| Net income | — | — | — | 105,213 | — | — | 105,213 | ||||||||||||||||||||||||||||||||||
| Other comprehensive income, net of tax | — | — | — | — | (9,949) | — | (9,949) | ||||||||||||||||||||||||||||||||||
| ESOP shares committed to be released | — | — | 1,205 | — | — | 1,255 | 2,460 | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2026 | 228,858,364 | $ | 2,289 | $ | 2,482,957 | $ | 2,176,037 | $ | (257,797) | $ | (120,272) | $ | 4,283,214 | ||||||||||||||||||||||||||||
| Shares of Common Stock Outstanding | Common Stock | Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Unallocated Common Stock Held by ESOP | Total | |||||||||||||||||||||||||||||||||||
| (In thousands, except share data) | |||||||||||||||||||||||||||||||||||||||||
| Balance at December 31, 2024 | 213,909,472 | $ | 2,141 | $ | 2,237,494 | $ | 2,084,503 | $ | (584,329) | $ | (127,842) | $ | 3,611,967 | ||||||||||||||||||||||||||||
Dividends to common shareholders (1) | — | — | — | (50,194) | — | — | (50,194) | ||||||||||||||||||||||||||||||||||
| Issuance of restricted stock awards | 54,236 | 1 | (1) | — | — | — | — | ||||||||||||||||||||||||||||||||||
| Repurchased common stock | (3,058,583) | (30) | (51,899) | — | — | — | (51,929) | ||||||||||||||||||||||||||||||||||
Restricted stock awards cancelled (2) | (10,954) | (2) | (145) | (147) | |||||||||||||||||||||||||||||||||||||
Issuance of common stock under share-based compensation arrangements (3) | 569,125 | 5 | (6,243) | — | — | — | (6,238) | ||||||||||||||||||||||||||||||||||
| Share-based compensation | — | — | 8,997 | — | — | — | 8,997 | ||||||||||||||||||||||||||||||||||
| Net loss | — | — | — | (117,433) | — | — | (117,433) | ||||||||||||||||||||||||||||||||||
| Other comprehensive income, net of tax | — | — | — | — | 284,802 | — | 284,802 | ||||||||||||||||||||||||||||||||||
| ESOP shares committed to be released | — | — | 1,524 | — | — | 2,542 | 4,066 | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2025 | 211,463,296 | $ | 2,115 | $ | 2,189,727 | $ | 1,916,876 | $ | (299,527) | $ | (125,300) | $ | 3,683,891 | ||||||||||||||||||||||||||||
| Balance at December 31, 2025 | 235,646,558 | $ | 2,356 | $ | 2,621,029 | $ | 2,067,327 | $ | (227,363) | $ | (122,796) | $ | 4,340,553 | ||||||||||||||||||||||||||||
Dividends to common shareholders (1) | — | — | — | (61,765) | — | — | (61,765) | ||||||||||||||||||||||||||||||||||
| Issuance of restricted stock awards | 58,245 | 1 | (1) | — | — | — | — | ||||||||||||||||||||||||||||||||||
| Repurchased common stock | (7,512,620) | (75) | (149,130) | — | — | — | (149,205) | ||||||||||||||||||||||||||||||||||
Restricted stock awards cancelled (2) | (6,031) | — | (122) | — | — | — | (122) | ||||||||||||||||||||||||||||||||||
Issuance of common stock under share-based compensation arrangements (3) | 363,944 | 4 | (4,084) | — | — | — | (4,080) | ||||||||||||||||||||||||||||||||||
| Share-based compensation | — | — | 8,597 | — | — | — | 8,597 | ||||||||||||||||||||||||||||||||||
| Stock options exercised | 308,268 | 3 | 4,122 | — | — | — | 4,125 | ||||||||||||||||||||||||||||||||||
| Net income | — | — | — | 170,475 | — | — | 170,475 | ||||||||||||||||||||||||||||||||||
| Other comprehensive income, net of tax | — | — | — | — | (30,434) | — | (30,434) | ||||||||||||||||||||||||||||||||||
| ESOP shares committed to be released | — | — | 2,546 | — | — | 2,524 | 5,070 | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2026 | 228,858,364 | $ | 2,289 | $ | 2,482,957 | $ | 2,176,037 | $ | (257,797) | $ | (120,272) | $ | 4,283,214 | ||||||||||||||||||||||||||||
| Six Months Ended June 30, | |||||||||||
| (In thousands) | 2026 | 2025 | |||||||||
| Operating activities | |||||||||||
| Net income (loss) | $ | 170,475 | $ | (117,433) | |||||||
| Adjustments to reconcile net (loss) income to net cash provided by operating activities | |||||||||||
| Provision for allowance for loan losses | 12,511 | 14,200 | |||||||||
| Depreciation and amortization | 31,166 | 21,408 | |||||||||
| Accretion of deferred loan fees and premiums, net | (30,396) | (22,976) | |||||||||
| Deferred income tax expense (benefit) | 23,181 | (41,224) | |||||||||
| Accretion of investment security premiums and discounts, net | (4,563) | (3,177) | |||||||||
| Right-of-use asset amortization | 6,642 | 6,410 | |||||||||
| Share-based compensation | 8,597 | 8,997 | |||||||||
| Increase in cash surrender value of bank-owned life insurance | (3,903) | (2,613) | |||||||||
| Loss on sale of securities available for sale, net | — | 269,638 | |||||||||
| Loss on lease right-of-use assets, net | 2,949 | — | |||||||||
| Employee Stock Ownership Plan expense | 5,070 | 4,066 | |||||||||
| Gain on sale of commercial loans held for investment | (5,163) | (477) | |||||||||
| Other | 1,652 | 441 | |||||||||
| Loans held for sale: | |||||||||||
| Proceeds from sales of loans held for sale | 208,583 | 22,749 | |||||||||
| Loans originated for sale, net of repayments | (204,590) | (14,884) | |||||||||
| (Gain) loss on sale of loans held for sale | (4,652) | 99 | |||||||||
| Change in: | |||||||||||
| Prepaid pension expense | (3,840) | (2,644) | |||||||||
| Other assets | (13,465) | 86,493 | |||||||||
| Other liabilities | (55,129) | (57,875) | |||||||||
| Net cash provided by operating activities | 145,125 | 171,198 | |||||||||
| Investing activities | |||||||||||
| Proceeds from sales of securities available for sale | — | 1,339,345 | |||||||||
| Proceeds from maturities and principal paydowns of securities available for sale | 227,367 | 219,518 | |||||||||
| Purchases of securities available for sale | (480,202) | (1,330,852) | |||||||||
| Proceeds from maturities and principal paydowns of securities held to maturity | 14,058 | 12,455 | |||||||||
| Purchases of securities held to maturity | (168,714) | (84,737) | |||||||||
| Proceeds from sale of Federal Home Loan Bank stock | 74,100 | 20,971 | |||||||||
| Purchases of Federal Home Loan Bank stock | (81,512) | (21,360) | |||||||||
| Contributions to low income housing tax credit investments | (12,478) | (23,053) | |||||||||
| Contributions to other equity investments | (576) | (743) | |||||||||
| Distributions from other equity investments | 1,163 | 709 | |||||||||
| Net increase in outstanding loans | (199,004) | (531,945) | |||||||||
| Purchased banking premises and equipment | (7,878) | (6,369) | |||||||||
| Proceeds from life insurance policies | 487 | 327 | |||||||||
| Net cash used in investing activities | (633,189) | (405,734) | |||||||||
| Financing activities | |||||||||||
| Net increase (decrease) in demand, savings, interest checking, and money market investment deposit accounts | 641,382 | (9,980) | |||||||||
| Net decrease in time deposits | (192,821) | (88,580) | |||||||||
| Net increase (decrease) in borrowed funds | 183,655 | (17,991) | |||||||||
| Payments for repurchase of common stock | (147,054) | (51,929) | |||||||||
| Proceeds from the exercise of stock options | 4,125 | — | |||||||||
| Dividends declared and paid to common shareholders | (61,929) | (50,358) | |||||||||
| Net cash provided by (used in) financing activities | 427,358 | (218,838) | |||||||||
| Net decrease in cash, cash equivalents, and restricted cash | (60,706) | (453,374) | |||||||||
| Cash, cash equivalents, and restricted cash at beginning of period | 316,869 | 1,006,880 | |||||||||
| Cash, cash equivalents, and restricted cash at end of period | $ | 256,163 | $ | 553,506 | |||||||
| Supplemental disclosure of cash flow information | |||||||||||
| Cash paid during the period for: | |||||||||||
| Interest paid on deposits and borrowings | $ | 205,580 | $ | 155,976 | |||||||
| Income taxes refunded, net | (11,453) | (675) | |||||||||
| Non-cash activities | |||||||||||
| Capital commitments relating to low income housing tax credit projects | $ | 24,304 | $ | — | |||||||
| Net increase in operating lease right-of-use assets and operating lease liabilities relating to lease remeasurements/modifications | 6,044 | 2,192 | |||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||
| Amortized Cost | Unrealized Gains | Unrealized Losses | Allowance for Credit Losses | Fair Value | |||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||
| Debt securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 3,043,549 | $ | 7,498 | $ | (256,210) | $ | — | $ | 2,794,837 | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 1,120,536 | 3,061 | (99,087) | — | 1,024,510 | ||||||||||||||||||||||||
| U.S. Treasury securities | 50,015 | 51 | — | — | 50,066 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 186,398 | 32 | (8,015) | — | 178,415 | ||||||||||||||||||||||||
| $ | 4,400,498 | $ | 10,642 | $ | (363,312) | $ | — | $ | 4,047,828 | ||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||
| Amortized Cost | Unrealized Gains | Unrealized Losses | Allowance for Credit Losses | Fair Value | |||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||
| Debt securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 2,753,311 | $ | 19,846 | $ | (239,848) | $ | — | $ | 2,533,309 | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 1,148,394 | 9,388 | (97,451) | — | 1,060,331 | ||||||||||||||||||||||||
| U.S. Treasury securities | 50,030 | 320 | — | — | 50,350 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 191,428 | 55 | (9,904) | — | 181,579 | ||||||||||||||||||||||||
| $ | 4,143,163 | $ | 29,609 | $ | (347,203) | $ | — | $ | 3,825,569 | ||||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Gross realized gains from sales of AFS securities | $ | — | $ | — | $ | — | $ | — | |||||||||||||||
| Gross realized losses from sales of AFS securities | — | — | — | (269,638) | |||||||||||||||||||
| Net losses from sales of AFS securities | $ | — | $ | — | $ | — | $ | (269,638) | |||||||||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||
| Less than 12 Months | 12 Months or Longer | Total | |||||||||||||||||||||||||||||||||||||||
| # of Holdings | Gross Unrealized Losses | Fair Value | Gross Unrealized Losses | Fair Value | Gross Unrealized Losses | Fair Value | |||||||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | 303 | $ | 7,483 | $ | 575,820 | $ | 248,727 | $ | 1,402,448 | $ | 256,210 | $ | 1,978,268 | ||||||||||||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 148 | 267 | 102,613 | 98,820 | 577,654 | 99,087 | 680,267 | ||||||||||||||||||||||||||||||||||
| State and municipal bonds and obligations | 205 | 515 | 50,321 | 7,500 | 116,669 | 8,015 | 166,990 | ||||||||||||||||||||||||||||||||||
| 656 | $ | 8,265 | $ | 728,754 | $ | 355,047 | $ | 2,096,771 | $ | 363,312 | $ | 2,825,525 | |||||||||||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||||||||||||||
| Less than 12 Months | 12 Months or Longer | Total | |||||||||||||||||||||||||||||||||||||||
| # of Holdings | Gross Unrealized Losses | Fair Value | Gross Unrealized Losses | Fair Value | Gross Unrealized Losses | Fair Value | |||||||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | 292 | $ | 317 | $ | 74,415 | $ | 239,531 | $ | 1,511,918 | $ | 239,848 | $ | 1,586,333 | ||||||||||||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 148 | — | — | 97,451 | 608,386 | 97,451 | 608,386 | ||||||||||||||||||||||||||||||||||
| State and municipal bonds and obligations | 199 | 8 | 3,816 | 9,896 | 156,973 | 9,904 | 160,789 | ||||||||||||||||||||||||||||||||||
| 639 | $ | 325 | $ | 78,231 | $ | 346,878 | $ | 2,277,277 | $ | 347,203 | $ | 2,355,508 | |||||||||||||||||||||||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||
| Amortized Cost | Unrealized Gains | Unrealized Losses | Allowance for Credit Losses | Fair Value | |||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||
| Debt securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 199,766 | $ | — | $ | (17,366) | $ | — | $ | 182,400 | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 181,682 | — | (12,623) | — | 169,059 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 329,860 | 5,774 | (404) | — | 335,230 | ||||||||||||||||||||||||
| Corporate bonds | 52,886 | 1,444 | (28) | — | 54,302 | ||||||||||||||||||||||||
| $ | 764,194 | $ | 7,218 | $ | (30,421) | $ | — | $ | 740,991 | ||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||
| Amortized Cost | Unrealized Gains | Unrealized Losses | Allowance for Credit Losses | Fair Value | |||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||
| Debt securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 210,142 | $ | — | $ | (15,595) | $ | — | $ | 194,547 | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 185,185 | — | (11,601) | — | 173,584 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 167,346 | 2,914 | (399) | — | 169,861 | ||||||||||||||||||||||||
| Corporate bonds | 36,884 | 1,098 | — | — | 37,982 | ||||||||||||||||||||||||
| $ | 599,557 | $ | 4,012 | $ | (27,595) | $ | — | $ | 575,974 | ||||||||||||||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Due in one year or less | Due after one year to five years | Due after five to ten years | Due after ten years | Total | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Amortized Cost | Fair Value | Amortized Cost | Fair Value | Amortized Cost | Fair Value | Amortized Cost | Fair Value | Amortized Cost | Fair Value | ||||||||||||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| AFS securities | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 702 | $ | 698 | $ | 7,047 | $ | 6,933 | $ | 19,708 | $ | 18,467 | $ | 3,016,092 | $ | 2,768,739 | $ | 3,043,549 | $ | 2,794,837 | |||||||||||||||||||||||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 97,081 | 96,503 | 521,777 | 517,685 | 36,120 | 32,156 | 465,558 | 378,166 | 1,120,536 | 1,024,510 | |||||||||||||||||||||||||||||||||||||||||||||||||
| U.S. Treasury securities | 50,015 | 50,066 | — | — | — | — | — | — | 50,015 | 50,066 | |||||||||||||||||||||||||||||||||||||||||||||||||
| State and municipal bonds and obligations | 7,279 | 7,242 | 34,771 | 34,267 | 54,139 | 53,270 | 90,209 | 83,636 | 186,398 | 178,415 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Total available for sale securities | 155,077 | 154,509 | 563,595 | 558,885 | 109,967 | 103,893 | 3,571,859 | 3,230,541 | 4,400,498 | 4,047,828 | |||||||||||||||||||||||||||||||||||||||||||||||||
| HTM securities | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | — | — | — | — | — | — | 199,766 | 182,400 | 199,766 | 182,400 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | — | — | 128,418 | 121,697 | 53,264 | 47,362 | — | — | 181,682 | 169,059 | |||||||||||||||||||||||||||||||||||||||||||||||||
| State and municipal bond obligations | — | — | — | — | 1,190 | 1,262 | 328,670 | 333,968 | 329,860 | 335,230 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Corporate bonds | 1,006 | 1,008 | — | — | 46,880 | 48,308 | 5,000 | 4,986 | 52,886 | 54,302 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Total held to maturity securities | 1,006 | 1,008 | 128,418 | 121,697 | 101,334 | 96,932 | 533,436 | 521,354 | 764,194 | 740,991 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Total | $ | 156,083 | $ | 155,517 | $ | 692,013 | $ | 680,582 | $ | 211,301 | $ | 200,825 | $ | 4,105,295 | $ | 3,751,895 | $ | 5,164,692 | $ | 4,788,819 | |||||||||||||||||||||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Due in one year or less | Due after one year to five years | Due after five to ten years | Due after ten years | Total | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Amortized Cost | Fair Value | Amortized Cost | Fair Value | Amortized Cost | Fair Value | Amortized Cost | Fair Value | Amortized Cost | Fair Value | ||||||||||||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| AFS securities | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 661 | $ | 657 | $ | 10,753 | $ | 10,602 | $ | 22,179 | $ | 21,006 | $ | 2,719,718 | $ | 2,501,044 | $ | 2,753,311 | $ | 2,533,309 | |||||||||||||||||||||||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 10,528 | 10,368 | 601,026 | 604,330 | 48,278 | 43,673 | 488,562 | 401,960 | 1,148,394 | 1,060,331 | |||||||||||||||||||||||||||||||||||||||||||||||||
| U.S. Treasury securities | 50,030 | 50,350 | — | — | — | — | — | — | 50,030 | 50,350 | |||||||||||||||||||||||||||||||||||||||||||||||||
| State and municipal bonds and obligations | 7,040 | 7,011 | 35,647 | 35,181 | 52,939 | 52,451 | 95,802 | 86,936 | 191,428 | 181,579 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Total available for sale securities | 68,259 | 68,386 | 647,426 | 650,113 | 123,396 | 117,130 | 3,304,082 | 2,989,940 | 4,143,163 | 3,825,569 | |||||||||||||||||||||||||||||||||||||||||||||||||
| HTM securities | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | — | — | — | — | — | — | 210,142 | 194,547 | 210,142 | 194,547 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | — | — | 130,301 | 124,033 | 54,884 | 49,551 | — | — | 185,185 | 173,584 | |||||||||||||||||||||||||||||||||||||||||||||||||
| State and municipal bonds and obligations | — | — | — | — | — | — | 167,346 | 169,861 | 167,346 | 169,861 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Corporate bonds | — | — | 1,012 | 1,014 | 35,872 | 36,968 | — | — | 36,884 | 37,982 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Total held to maturity securities | — | — | 131,313 | 125,047 | 90,756 | 86,519 | 377,488 | 364,408 | 599,557 | 575,974 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Total | $ | 68,259 | $ | 68,386 | $ | 778,739 | $ | 775,160 | $ | 214,152 | $ | 203,649 | $ | 3,681,570 | $ | 3,354,348 | $ | 4,742,720 | $ | 4,401,543 | |||||||||||||||||||||||||||||||||||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Commercial and industrial | $ | 4,690,914 | $ | 4,324,615 | |||||||
| Commercial real estate | 9,390,773 | 9,529,071 | |||||||||
| Commercial construction | 544,546 | 567,597 | |||||||||
| Business banking | 1,561,530 | 1,603,489 | |||||||||
| Residential real estate | 5,442,043 | 5,516,114 | |||||||||
| Consumer home equity | 1,824,835 | 1,758,099 | |||||||||
| Other consumer | 258,458 | 275,511 | |||||||||
| Gross loans before unearned discounts and deferred fees, net | 23,713,099 | 23,574,496 | |||||||||
Allowance for loan losses (1) | (325,354) | (331,841) | |||||||||
| Unearned discounts and deferred fees, net | (431,698) | (489,431) | |||||||||
| Loans after the allowance for loan losses and net unearned discounts and deferred fees | $ | 22,956,047 | $ | 22,753,224 | |||||||
| For the Three Months Ended June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||||||||
| Commercial and Industrial | Commercial Real Estate | Commercial Construction | Business Banking | Residential Real Estate | Consumer Home Equity | Other Consumer | Total | ||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||
| Allowance for loan losses: | |||||||||||||||||||||||||||||||||||||||||||||||
| Beginning balance | $ | 59,508 | $ | 178,826 | $ | 11,123 | $ | 22,159 | $ | 42,641 | $ | 9,627 | $ | 4,008 | $ | 327,892 | |||||||||||||||||||||||||||||||
| Initial reserve on purchased seasoned loans | 487 | — | — | — | — | — | — | 487 | |||||||||||||||||||||||||||||||||||||||
| Charge-offs | (816) | (9,202) | — | (2,040) | (68) | (3) | (802) | (12,931) | |||||||||||||||||||||||||||||||||||||||
| Recoveries | 794 | 946 | — | 1,213 | 40 | 1 | 157 | 3,151 | |||||||||||||||||||||||||||||||||||||||
| Provision (release) | 3,236 | 1,769 | 1,128 | 1,839 | (2,028) | 695 | 116 | 6,755 | |||||||||||||||||||||||||||||||||||||||
| Ending balance | $ | 63,209 | $ | 172,339 | $ | 12,251 | $ | 23,171 | $ | 40,585 | $ | 10,320 | $ | 3,479 | $ | 325,354 | |||||||||||||||||||||||||||||||
| For the Three Months Ended June 30, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||
| Commercial and Industrial | Commercial Real Estate | Commercial Construction | Business Banking | Residential Real Estate | Consumer Home Equity | Other Consumer | Total | ||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||
| Allowance for loan losses: | |||||||||||||||||||||||||||||||||||||||||||||||
| Beginning balance | $ | 46,490 | $ | 106,634 | $ | 8,514 | $ | 20,315 | $ | 31,096 | $ | 6,891 | $ | 4,370 | $ | 224,310 | |||||||||||||||||||||||||||||||
| Charge-offs | (82) | (1,790) | — | (999) | — | — | (529) | (3,400) | |||||||||||||||||||||||||||||||||||||||
| Recoveries | 7 | 2,368 | — | 942 | 36 | 5 | 245 | 3,603 | |||||||||||||||||||||||||||||||||||||||
| Provision (release) | 7,695 | (2,122) | 812 | 427 | 349 | 184 | 255 | 7,600 | |||||||||||||||||||||||||||||||||||||||
| Ending balance | $ | 54,110 | $ | 105,090 | $ | 9,326 | $ | 20,685 | $ | 31,481 | $ | 7,080 | $ | 4,341 | $ | 232,113 | |||||||||||||||||||||||||||||||
| For the Six Months Ended June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||||||||
| Commercial and Industrial | Commercial Real Estate | Commercial Construction | Business Banking | Residential Real Estate | Consumer Home Equity | Other Consumer | Total | ||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||
| Allowance for loan losses: | |||||||||||||||||||||||||||||||||||||||||||||||
| Beginning balance | $ | 65,768 | $ | 164,376 | $ | 21,058 | $ | 22,921 | $ | 44,177 | $ | 9,171 | $ | 4,370 | $ | 331,841 | |||||||||||||||||||||||||||||||
| Initial reserve on purchased seasoned loans | 487 | — | — | — | — | — | — | 487 | |||||||||||||||||||||||||||||||||||||||
| Charge-offs | (7,316) | (12,790) | — | (4,254) | (68) | (7) | (1,414) | (25,849) | |||||||||||||||||||||||||||||||||||||||
| Recoveries | 1,588 | 946 | — | 3,343 | 72 | 64 | 351 | 6,364 | |||||||||||||||||||||||||||||||||||||||
| Provision (release) | 2,682 | 19,807 | (8,807) | 1,161 | (3,596) | 1,092 | 172 | 12,511 | |||||||||||||||||||||||||||||||||||||||
| Ending balance | $ | 63,209 | $ | 172,339 | $ | 12,251 | $ | 23,171 | $ | 40,585 | $ | 10,320 | $ | 3,479 | $ | 325,354 | |||||||||||||||||||||||||||||||
| For the Six Months Ended June 30, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||
| Commercial and Industrial | Commercial Real Estate | Commercial Construction | Business Banking | Residential Real Estate | Consumer Home Equity | Other Consumer | Total | ||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||
| Allowance for loan losses: | |||||||||||||||||||||||||||||||||||||||||||||||
| Beginning balance | $ | 41,090 | $ | 116,175 | $ | 8,462 | $ | 19,899 | $ | 32,291 | $ | 7,472 | $ | 3,563 | $ | 228,952 | |||||||||||||||||||||||||||||||
| Charge-offs | (82) | (13,377) | — | (1,341) | — | — | (1,087) | (15,887) | |||||||||||||||||||||||||||||||||||||||
| Recoveries | 18 | 3,062 | — | 1,264 | 75 | 5 | 424 | 4,848 | |||||||||||||||||||||||||||||||||||||||
| Provision (release) | 13,084 | (770) | 864 | 863 | (885) | (397) | 1,441 | 14,200 | |||||||||||||||||||||||||||||||||||||||
| Ending balance | $ | 54,110 | $ | 105,090 | $ | 9,326 | $ | 20,685 | $ | 31,481 | $ | 7,080 | $ | 4,341 | $ | 232,113 | |||||||||||||||||||||||||||||||
| 2026 | 2025 | 2024 | 2023 | 2022 | Prior | Revolving Loans | Revolving Loans Converted to Term Loans (1) | Total | |||||||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commercial and industrial | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | $ | 685,284 | $ | 684,236 | $ | 266,786 | $ | 256,675 | $ | 385,399 | $ | 1,337,869 | $ | 868,520 | $ | — | $ | 4,484,769 | |||||||||||||||||||||||||||||||||||
| Special Mention | — | 3,427 | 2,302 | 1,024 | 2,356 | 2,260 | 22,803 | — | 34,172 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | — | 3,074 | 24 | 38,956 | 19,439 | 17,379 | 71,074 | — | 149,946 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | — | 3,128 | — | 8 | — | — | 3,136 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total commercial and industrial | 685,284 | 690,737 | 269,112 | 299,783 | 407,194 | 1,357,516 | 962,397 | — | 4,672,023 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | — | — | — | 6,498 | 818 | — | — | — | 7,316 | ||||||||||||||||||||||||||||||||||||||||||||
| Commercial real estate | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | 446,367 | 919,644 | 596,530 | 698,678 | 2,130,242 | 3,870,418 | 86,492 | 2,386 | 8,750,757 | ||||||||||||||||||||||||||||||||||||||||||||
| Special Mention | — | — | — | 30,538 | 89,767 | 147,595 | — | — | 267,900 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | — | 14,197 | — | 54,695 | 76,083 | 71,373 | — | — | 216,348 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | — | 3,477 | 35,250 | 27,019 | — | — | 65,746 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total commercial real estate | 446,367 | 933,841 | 596,530 | 787,388 | 2,331,342 | 4,116,405 | 86,492 | 2,386 | 9,300,751 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | — | — | — | — | 9,290 | 3,500 | — | — | 12,790 | ||||||||||||||||||||||||||||||||||||||||||||
| Commercial construction | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | 29,661 | 197,663 | 202,310 | 87,990 | 13,788 | — | 4,013 | — | 535,425 | ||||||||||||||||||||||||||||||||||||||||||||
| Special Mention | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | — | — | — | — | 8,133 | — | — | — | 8,133 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total commercial construction | 29,661 | 197,663 | 202,310 | 87,990 | 21,921 | — | 4,013 | — | 543,558 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Business banking | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | 69,635 | 176,676 | 164,726 | 127,261 | 163,536 | 686,198 | 116,496 | 4,004 | 1,508,532 | ||||||||||||||||||||||||||||||||||||||||||||
| Special Mention | — | 2,967 | 4,820 | 1,050 | 1,338 | 5,341 | 432 | 1,574 | 17,522 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | — | 1,552 | 3,448 | 4,998 | 3,150 | 12,731 | 844 | 250 | 26,973 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | — | — | — | 930 | — | — | 930 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total business banking | 69,635 | 181,195 | 172,994 | 133,309 | 168,024 | 705,200 | 117,772 | 5,828 | 1,553,957 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | — | 314 | 920 | 684 | 304 | 1,888 | — | 144 | 4,254 | ||||||||||||||||||||||||||||||||||||||||||||
| Residential real estate | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current and accruing | 187,116 | 413,205 | 218,348 | 356,708 | 1,196,126 | 2,750,936 | — | — | 5,122,439 | ||||||||||||||||||||||||||||||||||||||||||||
| 30-89 days past due and accruing | 427 | 1,984 | 2,112 | 1,887 | 6,367 | 14,008 | — | — | 26,785 | ||||||||||||||||||||||||||||||||||||||||||||
| Loans 90 days or more past due and still accruing | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Non-accrual | 231 | 1,195 | 243 | 1,050 | 6,184 | 13,040 | — | — | 21,943 | ||||||||||||||||||||||||||||||||||||||||||||
| Total residential real estate | 187,774 | 416,384 | 220,703 | 359,645 | 1,208,677 | 2,777,984 | — | — | 5,171,167 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | — | — | — | — | 68 | — | — | — | 68 | ||||||||||||||||||||||||||||||||||||||||||||
| Consumer home equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current and accruing | 1,293 | 6,888 | 10,114 | 21,850 | 57,452 | 92,022 | 1,598,403 | 13,297 | 1,801,319 | ||||||||||||||||||||||||||||||||||||||||||||
| 30-89 days past due and accruing | — | — | 48 | 103 | 386 | 1,871 | 11,337 | 483 | 14,228 | ||||||||||||||||||||||||||||||||||||||||||||
| Loans 90 days or more past due and still accruing | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Non-accrual | — | — | — | — | 47 | 1,513 | 4,821 | 60 | 6,441 | ||||||||||||||||||||||||||||||||||||||||||||
| Total consumer home equity | 1,293 | 6,888 | 10,162 | 21,953 | 57,885 | 95,406 | 1,614,561 | 13,840 | 1,821,988 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | — | — | — | — | — | 7 | — | — | 7 | ||||||||||||||||||||||||||||||||||||||||||||
| Other consumer | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current and accruing | 21,716 | 33,400 | 40,186 | 42,438 | 16,553 | 20,136 | 42,559 | 119 | 217,107 | ||||||||||||||||||||||||||||||||||||||||||||
| 30-89 days past due and accruing | 54 | 127 | 135 | 188 | 36 | 44 | 98 | — | 682 | ||||||||||||||||||||||||||||||||||||||||||||
| Loans 90 days or more past due and still accruing | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Non-accrual | 20 | 20 | 10 | 31 | 25 | — | 62 | — | 168 | ||||||||||||||||||||||||||||||||||||||||||||
| Total other consumer | 21,790 | 33,547 | 40,331 | 42,657 | 16,614 | 20,180 | 42,719 | 119 | 217,957 | ||||||||||||||||||||||||||||||||||||||||||||
| Current period gross charge-offs | 810 | 101 | 172 | 56 | 78 | 78 | 119 | — | 1,414 | ||||||||||||||||||||||||||||||||||||||||||||
| Total | $ | 1,441,804 | $ | 2,460,255 | $ | 1,512,142 | $ | 1,732,725 | $ | 4,211,657 | $ | 9,072,691 | $ | 2,827,954 | $ | 22,173 | $ | 23,281,401 | |||||||||||||||||||||||||||||||||||
| 2025 | 2024 | 2023 | 2022 | 2021 | Prior | Revolving Loans | Revolving Loans Converted to Term Loans (1) | Total | |||||||||||||||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commercial and industrial | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | $ | 835,431 | $ | 310,569 | $ | 296,116 | $ | 422,850 | $ | 378,622 | $ | 1,090,152 | $ | 792,359 | $ | 165 | $ | 4,126,264 | |||||||||||||||||||||||||||||||||||
| Special Mention | 948 | 2,399 | 6,716 | 133 | 1,314 | 2,795 | 12,990 | — | 27,295 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | 4,093 | 10,974 | 31,539 | 22,819 | 2,806 | 4,893 | 53,495 | — | 130,619 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | 9,628 | — | — | 1,049 | 847 | — | 11,524 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total commercial and industrial | 840,472 | 323,942 | 343,999 | 445,802 | 382,742 | 1,098,889 | 859,691 | 165 | 4,295,702 | ||||||||||||||||||||||||||||||||||||||||||||
| Commercial real estate | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | 903,311 | 616,073 | 750,447 | 2,297,477 | 1,285,420 | 2,892,767 | 102,016 | 2,747 | 8,850,258 | ||||||||||||||||||||||||||||||||||||||||||||
| Special Mention | — | 865 | 30,585 | 28,104 | 90,528 | 73,987 | 994 | — | 225,063 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | 14,027 | — | 54,833 | 85,591 | 13,408 | 65,778 | — | — | 233,637 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | 20,852 | 55,698 | 2,381 | 26,472 | — | — | 105,403 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total commercial real estate | 917,338 | 616,938 | 856,717 | 2,466,870 | 1,391,737 | 3,059,004 | 103,010 | 2,747 | 9,414,361 | ||||||||||||||||||||||||||||||||||||||||||||
| Commercial construction | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | 134,110 | 209,193 | 103,355 | 65,595 | 14,263 | 712 | 8,117 | — | 535,345 | ||||||||||||||||||||||||||||||||||||||||||||
| Special Mention | — | 423 | — | 4,671 | — | — | 1,033 | — | 6,127 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | — | — | — | 5,646 | — | — | — | — | 5,646 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | — | 14,888 | — | 1,479 | — | — | 16,367 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total commercial construction | 134,110 | 209,616 | 103,355 | 90,800 | 14,263 | 2,191 | 9,150 | — | 563,485 | ||||||||||||||||||||||||||||||||||||||||||||
| Business banking | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pass | 182,967 | 175,785 | 139,676 | 180,091 | 210,893 | 549,839 | 114,235 | 5,762 | 1,559,248 | ||||||||||||||||||||||||||||||||||||||||||||
| Special Mention | — | 5,505 | 1,444 | 820 | 4,453 | 3,298 | 165 | 264 | 15,949 | ||||||||||||||||||||||||||||||||||||||||||||
| Substandard | 1,525 | 3,412 | 3,482 | 2,845 | 1,765 | 3,769 | 197 | 493 | 17,488 | ||||||||||||||||||||||||||||||||||||||||||||
| Doubtful | — | — | 412 | 352 | 28 | 3 | 196 | 18 | 1,009 | ||||||||||||||||||||||||||||||||||||||||||||
| Loss | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Total business banking | 184,492 | 184,702 | 145,014 | 184,108 | 217,139 | 556,909 | 114,793 | 6,537 | 1,593,694 | ||||||||||||||||||||||||||||||||||||||||||||
| Residential real estate | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current and accruing | 433,413 | 239,268 | 394,753 | 1,242,550 | 1,323,273 | 1,544,328 | — | — | 5,177,585 | ||||||||||||||||||||||||||||||||||||||||||||
| 30-89 days past due and accruing | 1,045 | 2,625 | 2,130 | 6,121 | 5,801 | 17,654 | — | — | 35,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Loans 90 days or more past due and still accruing | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Non-accrual | 184 | — | 721 | 5,686 | 1,948 | 10,680 | — | — | 19,219 | ||||||||||||||||||||||||||||||||||||||||||||
| Total residential real estate | 434,642 | 241,893 | 397,604 | 1,254,357 | 1,331,022 | 1,572,662 | — | — | 5,232,180 | ||||||||||||||||||||||||||||||||||||||||||||
| Consumer home equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current and accruing | 32,940 | 43,175 | 53,426 | 104,417 | 31,698 | 117,896 | 1,332,194 | 20,341 | 1,736,087 | ||||||||||||||||||||||||||||||||||||||||||||
| 30-89 days past due and accruing | 248 | 58 | 233 | 251 | — | 1,716 | 8,269 | 655 | 11,430 | ||||||||||||||||||||||||||||||||||||||||||||
| Loans 90 days or more past due and still accruing | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Non-accrual | — | — | 95 | — | — | 1,126 | 4,555 | 317 | 6,093 | ||||||||||||||||||||||||||||||||||||||||||||
| Total consumer home equity | 33,188 | 43,233 | 53,754 | 104,668 | 31,698 | 120,738 | 1,345,018 | 21,313 | 1,753,610 | ||||||||||||||||||||||||||||||||||||||||||||
| Other consumer | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current and accruing | 44,301 | 46,109 | 49,860 | 20,675 | 11,399 | 15,976 | 42,750 | 117 | 231,187 | ||||||||||||||||||||||||||||||||||||||||||||
| 30-89 days past due and accruing | 10 | 98 | 75 | 52 | 31 | 36 | 62 | 30 | 394 | ||||||||||||||||||||||||||||||||||||||||||||
| Loans 90 days or more past due and still accruing | — | — | — | — | — | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||||||
| Non-accrual | 48 | 4 | 13 | 30 | — | 12 | 84 | 261 | 452 | ||||||||||||||||||||||||||||||||||||||||||||
| Total other consumer | 44,359 | 46,211 | 49,948 | 20,757 | 11,430 | 16,024 | 42,896 | 408 | 232,033 | ||||||||||||||||||||||||||||||||||||||||||||
| Total | $ | 2,588,601 | $ | 1,666,535 | $ | 1,950,391 | $ | 4,567,362 | $ | 3,380,031 | $ | 6,426,417 | $ | 2,474,558 | $ | 31,170 | $ | 23,085,065 | |||||||||||||||||||||||||||||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||||||||
| 30-59 Days Past Due | 60-89 Days Past Due | 90 or More Days Past Due | Total Past Due | Current | Total Loans | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | 4,381 | $ | — | $ | 3,134 | $ | 7,515 | $ | 4,664,508 | $ | 4,672,023 | |||||||||||||||||||||||
| Commercial real estate | 3,572 | 13,984 | 3,477 | 21,033 | 9,279,718 | 9,300,751 | |||||||||||||||||||||||||||||
| Commercial construction | — | — | — | — | 543,558 | 543,558 | |||||||||||||||||||||||||||||
| Business banking | 8,830 | 4,268 | 9,101 | 22,199 | 1,531,758 | 1,553,957 | |||||||||||||||||||||||||||||
| Residential real estate | 19,622 | 7,516 | 20,291 | 47,429 | 5,123,738 | 5,171,167 | |||||||||||||||||||||||||||||
| Consumer home equity | 10,837 | 3,569 | 5,816 | 20,222 | 1,801,766 | 1,821,988 | |||||||||||||||||||||||||||||
| Other consumer | 471 | 211 | 143 | 825 | 217,132 | 217,957 | |||||||||||||||||||||||||||||
| Total | $ | 47,713 | $ | 29,548 | $ | 41,962 | $ | 119,223 | $ | 23,162,178 | $ | 23,281,401 | |||||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||||||||
| 30-59 Days Past Due | 60-89 Days Past Due | 90 or More Days Past Due | Total Past Due | Current | Total Loans | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | 5,368 | $ | 164 | $ | 1,591 | $ | 7,123 | $ | 4,288,579 | $ | 4,295,702 | |||||||||||||||||||||||
| Commercial real estate | 5,992 | 994 | 14,174 | 21,160 | 9,393,201 | 9,414,361 | |||||||||||||||||||||||||||||
| Commercial construction | — | — | 1,033 | 1,033 | 562,452 | 563,485 | |||||||||||||||||||||||||||||
| Business banking | 16,673 | 3,530 | 8,994 | 29,197 | 1,564,497 | 1,593,694 | |||||||||||||||||||||||||||||
| Residential real estate | 26,493 | 10,361 | 16,543 | 53,397 | 5,178,783 | 5,232,180 | |||||||||||||||||||||||||||||
| Consumer home equity | 9,929 | 2,141 | 5,321 | 17,391 | 1,736,219 | 1,753,610 | |||||||||||||||||||||||||||||
| Other consumer | 284 | 114 | 417 | 815 | 231,218 | 232,033 | |||||||||||||||||||||||||||||
| Total | $ | 64,739 | $ | 17,304 | $ | 48,073 | $ | 130,116 | $ | 22,954,949 | $ | 23,085,065 | |||||||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||||||||||||||||||||||||||
| Non-Accrual Loans With ACL | Non-Accrual Loans Without ACL (1) | Total Non-Accrual Loans | Non-Accrual Loans With ACL | Non-Accrual Loans Without ACL (1) | Total Non-Accrual Loans | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | 271 | $ | 3,098 | $ | 3,369 | $ | 8,810 | $ | 3,284 | $ | 12,094 | |||||||||||||||||||||||
| Commercial real estate | 58,731 | 7,836 | 66,567 | 70,010 | 35,402 | 105,412 | |||||||||||||||||||||||||||||
| Commercial construction | — | — | — | 17,400 | — | 17,400 | |||||||||||||||||||||||||||||
| Business banking | 10,451 | 442 | 10,893 | 11,319 | 350 | 11,669 | |||||||||||||||||||||||||||||
| Residential real estate | 21,943 | — | 21,943 | 19,219 | — | 19,219 | |||||||||||||||||||||||||||||
| Consumer home equity | 6,441 | — | 6,441 | 6,093 | — | 6,093 | |||||||||||||||||||||||||||||
| Other consumer | 168 | — | 168 | 452 | — | 452 | |||||||||||||||||||||||||||||
| Total non-accrual loans | $ | 98,005 | $ | 11,376 | $ | 109,381 | $ | 133,303 | $ | 39,036 | $ | 172,339 | |||||||||||||||||||||||
| Three Months Ended June 30, 2026 | Six Months Ended June 30, 2026 | ||||||||||||||||||||||
| Amortized Cost Balance | % of Total Portfolio | Amortized Cost Balance | % of Total Portfolio | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Interest Rate Reduction: | |||||||||||||||||||||||
| Business banking | $ | — | — | % | $ | 76 | 0.00 | % | |||||||||||||||
| Total interest rate reduction | $ | — | — | % | $ | 76 | 0.00 | % | |||||||||||||||
| Other-than-Insignificant Delay in Repayment: | |||||||||||||||||||||||
| Commercial and industrial | $ | 5,522 | 0.12 | % | $ | 5,522 | 0.12 | % | |||||||||||||||
| Business banking | 897 | 0.06 | % | 3,416 | 0.22 | % | |||||||||||||||||
| Residential real estate | 470 | 0.01 | % | 470 | 0.01 | % | |||||||||||||||||
| Consumer home equity | — | — | % | 150 | 0.01 | % | |||||||||||||||||
| Total other-than-insignificant delay in repayment | $ | 6,889 | 0.03 | % | $ | 9,558 | 0.04 | % | |||||||||||||||
| Term Extension: | |||||||||||||||||||||||
| Commercial and industrial | $ | 2,203 | 0.05 | % | $ | 2,203 | 0.05 | % | |||||||||||||||
| Commercial real estate | 7,077 | 0.08 | % | 21,062 | 0.23 | % | |||||||||||||||||
| Business banking | 265 | 0.02 | % | 951 | 0.06 | % | |||||||||||||||||
| Residential real estate | — | — | % | 132 | 0.00 | % | |||||||||||||||||
| Total term extension | $ | 9,545 | 0.04 | % | $ | 24,348 | 0.10 | % | |||||||||||||||
| Combination—Interest Rate Reduction & Other-than-Insignificant-Delay in Repayment: | |||||||||||||||||||||||
| Business banking | $ | 23 | 0.00 | % | $ | 2,222 | 0.14 | % | |||||||||||||||
| Total combination—interest rate reduction & other-than-insignificant delay in repayment | $ | 23 | 0.00 | % | $ | 2,222 | 0.01 | % | |||||||||||||||
| Combination—Interest Rate Reduction, Term Extension & Other-than-Insignificant Delay in Repayment: | |||||||||||||||||||||||
| Business banking | $ | 70 | 0.00 | % | $ | 70 | 0.00 | % | |||||||||||||||
| Total combination—interest rate reduction, term extension & other-than-insignificant delay in repayment | $ | 70 | 0.00 | % | $ | 70 | 0.00 | % | |||||||||||||||
| Total by portfolio segment | |||||||||||||||||||||||
| Commercial and industrial | $ | 7,725 | 0.17 | % | $ | 7,725 | 0.17 | % | |||||||||||||||
| Commercial real estate | 7,077 | 0.08 | % | 21,062 | 0.23 | % | |||||||||||||||||
| Business banking | 1,255 | 0.08 | % | 6,735 | 0.43 | % | |||||||||||||||||
| Residential real estate | 470 | 0.01 | % | 602 | 0.01 | % | |||||||||||||||||
| Consumer home equity | — | — | % | 150 | 0.01 | % | |||||||||||||||||
| Total | $ | 16,527 | 0.07 | % | $ | 36,274 | 0.16 | % | |||||||||||||||
| Three Months Ended June 30, 2025 | Six Months Ended June 30, 2025 | ||||||||||||||||||||||
| Amortized Cost Balance | % of Total Portfolio | Amortized Cost Balance | % of Total Portfolio | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Interest Rate Reduction: | |||||||||||||||||||||||
| Business banking | $ | — | — | % | $ | 37 | 0.00 | % | |||||||||||||||
| Residential real estate | 122 | 0.00 | % | 122 | 0.00 | % | |||||||||||||||||
| Consumer home equity | 72 | 0.00 | % | 152 | 0.01 | % | |||||||||||||||||
| Total interest rate reduction | $ | 194 | 0.00 | % | $ | 311 | 0.00 | % | |||||||||||||||
| Other-than-Insignificant Delay in Repayment: | |||||||||||||||||||||||
| Business banking | $ | 1,263 | 0.09 | % | $ | 1,384 | 0.10 | % | |||||||||||||||
| Residential real estate | 364 | 0.01 | % | 364 | 0.01 | % | |||||||||||||||||
| Consumer home equity | 150 | 0.01 | % | 150 | 0.01 | % | |||||||||||||||||
| Total other-than-insignificant delay in repayment | $ | 1,777 | 0.01 | % | $ | 1,898 | 0.01 | % | |||||||||||||||
| Term Extension: | |||||||||||||||||||||||
| Commercial and industrial | $ | — | — | % | $ | 2,682 | 0.07 | % | |||||||||||||||
| Business banking | 3 | 0.00 | % | 3 | 0.00 | % | |||||||||||||||||
| Total term extension | $ | 3 | 0.00 | % | $ | 2,685 | 0.01 | % | |||||||||||||||
| Combination—Term Extension & Other-than-Insignificant Delay in Repayment: | |||||||||||||||||||||||
| Commercial real estate | $ | 9,066 | 0.13 | % | $ | 9,066 | 0.13 | % | |||||||||||||||
| Business Banking | — | — | % | 268 | 0.02 | % | |||||||||||||||||
| Total combination—term extension & other-than-insignificant delay in repayment | $ | 9,066 | 0.05 | % | $ | 9,334 | 0.05 | % | |||||||||||||||
| Total by portfolio segment | |||||||||||||||||||||||
| Commercial and industrial | $ | — | — | % | $ | 2,682 | 0.07 | % | |||||||||||||||
| Commercial real estate | 9,066 | 0.13 | % | 9,066 | 0.13 | % | |||||||||||||||||
| Business banking | 1,266 | 0.09 | % | 1,692 | 0.12 | % | |||||||||||||||||
| Residential real estate | 486 | 0.01 | % | 486 | 0.01 | % | |||||||||||||||||
| Consumer home equity | 222 | 0.02 | % | 302 | 0.02 | % | |||||||||||||||||
| Total | $ | 11,040 | 0.06 | % | $ | 14,228 | 0.08 | % | |||||||||||||||
| Three Months Ended June 30, 2026 | |||||||||||||||||||||||||||||||||||
| Loan Type | Financial Effect | ||||||||||||||||||||||||||||||||||
| Interest Rate Reduction | |||||||||||||||||||||||||||||||||||
| Business banking | Reduced weighted-average contractual interest rate from 12.5% to 7.8%. | ||||||||||||||||||||||||||||||||||
| Other-than-Insignificant Delay in Repayment | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | Interest-only period of 6 months for one borrower. Principal deferred to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Business banking | Deferred a weighted average of 5 payments. For interest-only deferrals, interest accrued at the time of the modification was added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Residential real estate | Deferred 6 principal and interest payments, which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Term Extension | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | Added a weighted-average of 4 months to the life of the loans, which reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Commercial real estate | Added 4 months to the life of the loan, which reduced monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Business banking | Added a weighted average of 5 months to the life of the loans, which reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Six Months Ended June 30, 2026 | |||||||||||||||||||||||||||||||||||
| Loan Type | Financial Effect | ||||||||||||||||||||||||||||||||||
| Interest Rate Reduction | |||||||||||||||||||||||||||||||||||
| Business banking | Reduced weighted-average contractual interest rate from 10.6% to 7.5%. | ||||||||||||||||||||||||||||||||||
| Other-than-Insignificant Delay in Repayment | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | Interest-only period of 6 months. Principal deferred to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Business banking | Deferred a weighted average of 8 payments. The loans were re-amortized over an extended payment period, resulting in reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Residential real estate | Deferred 6 principal and interest payments, which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Consumer home equity | Deferred 9 principal and interest payments, which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Term Extension | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | Added a weighted-average of 4 months to the life of the loans, which reduced the monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Commercial real estate | Added a weighted-average of 4 months to the life of the loans, which reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Business banking | Added a weighted average of 4 months to the life of the loans, which reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Residential real estate | Added 6 months to the life of loan, which reduced the monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Three Months Ended June 30, 2025 | |||||||||||||||||||||||||||||||||||
| Loan Type | Financial Effect | ||||||||||||||||||||||||||||||||||
| Interest Rate Reduction | |||||||||||||||||||||||||||||||||||
| Residential real estate | Reduced contractual interest rate from 7.3% to 4.5% | ||||||||||||||||||||||||||||||||||
| Consumer home equity | Reduced contractual interest rate from 7.0% to 4.0%. | ||||||||||||||||||||||||||||||||||
| Other-than-Insignificant Delay in Repayment | |||||||||||||||||||||||||||||||||||
| Commercial real estate | Deferred 12 principal payments. The loan was re-amortized over an extended payment period resulting in reduced monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Business banking | Deferred a weighted average of 5 payments. The loans were re-amortized over extended payment periods resulting in reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Residential real estate | Deferred 10 principal and interest payments which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Consumer home equity | Deferred 8 principal and interest payments which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Term Extension | |||||||||||||||||||||||||||||||||||
| Commercial real estate | Added 1.0 year to the life of the loan, which reduced the monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Business banking | Added 6 months to the life of loan, which reduced the monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Six Months Ended June 30, 2025 | |||||||||||||||||||||||||||||||||||
| Loan Type | Financial Effect | ||||||||||||||||||||||||||||||||||
| Interest Rate Reduction | |||||||||||||||||||||||||||||||||||
| Business banking | Reduced contractual interest rate from 7.8% to 6.0%. | ||||||||||||||||||||||||||||||||||
| Residential real estate | Reduced contractual interest rate from 7.3% to 4.5%. | ||||||||||||||||||||||||||||||||||
| Consumer home equity | Reduced weighted-average contractual interest rate from 7.0% to 4.5%. | ||||||||||||||||||||||||||||||||||
| Other-than-Insignificant Delay in Repayment | |||||||||||||||||||||||||||||||||||
| Commercial real estate | Deferred 12 principal payments. The loan was re-amortized over an extended payment period resulting in reduced monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Business banking | Deferred a weighted average of 5 payments. The loans were re-amortized over extended payment periods resulting in reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| Residential real estate | Deferred 10 principal and interest payments which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Consumer home equity | Deferred 8 principal and interest payments which were added to the end of the loan life. | ||||||||||||||||||||||||||||||||||
| Term Extension | |||||||||||||||||||||||||||||||||||
| Commercial industrial | Added 1.1 years to the life of the loan, which reduced the monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Commercial real estate | Added 1.0 year to the life of the loan, which reduced the monthly payment amount for the borrower. | ||||||||||||||||||||||||||||||||||
| Business banking | Added a weighted-average of 8 months to the life of loans, which reduced monthly payment amounts for the borrowers. | ||||||||||||||||||||||||||||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||||||||
| 30-59 Days Past Due | 60-89 Days Past Due | 90 or More Days Past Due | Total Past Due | Current | Total | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | — | $ | — | $ | — | $ | — | $ | 8,706 | $ | 8,706 | |||||||||||||||||||||||
| Commercial real estate | — | 13,984 | — | 13,984 | 40,330 | 54,314 | |||||||||||||||||||||||||||||
| Business banking | 239 | — | 506 | 745 | 7,765 | 8,510 | |||||||||||||||||||||||||||||
| Residential real estate | — | — | — | — | 1,186 | 1,186 | |||||||||||||||||||||||||||||
| Consumer home equity | — | — | 148 | 148 | 421 | 569 | |||||||||||||||||||||||||||||
| Total | $ | 239 | $ | 13,984 | $ | 654 | $ | 14,877 | $ | 58,408 | $ | 73,285 | |||||||||||||||||||||||
| As of June 30, 2025 | |||||||||||||||||||||||||||||||||||
| 30-59 Days Past Due | 60-89 Days Past Due | 90 or More Days Past Due | Total Past Due | Current | Total | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | — | $ | — | $ | — | $ | — | $ | 3,547 | $ | 3,547 | |||||||||||||||||||||||
| Commercial real estate | — | — | — | — | 9,066 | 9,066 | |||||||||||||||||||||||||||||
| Business banking | 196 | 52 | 40 | 288 | 2,152 | 2,440 | |||||||||||||||||||||||||||||
| Residential real estate | — | 95 | 450 | 545 | 1,131 | 1,676 | |||||||||||||||||||||||||||||
| Consumer home equity | 149 | — | — | 149 | 1,057 | 1,206 | |||||||||||||||||||||||||||||
| Total | $ | 345 | $ | 147 | $ | 490 | $ | 982 | $ | 16,953 | $ | 17,935 | |||||||||||||||||||||||
| As of and for the Six Months Ended June 30, 2026 | As of and for the Year Ended December 31, 2025 | ||||||||||||||||||||||||||||||||||
| Balance | Non-performing Loan Rate (%) | Gross Charge-offs | Balance | Non-performing Loan Rate (%) | Gross Charge-offs | ||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | 1,829,088 | 0.17 | % | $ | 6,500 | $ | 1,504,012 | 0.64 | % | $ | 5,004 | |||||||||||||||||||||||
| Commercial real estate | 1,109,079 | 1.91 | % | 3,500 | 1,611,130 | 1.84 | % | 5,282 | |||||||||||||||||||||||||||
| Commercial construction | 98,276 | 0.00 | % | — | 190,156 | 8.61 | % | — | |||||||||||||||||||||||||||
| Business banking | — | — | % | — | 1,072 | 0.00 | % | 15 | |||||||||||||||||||||||||||
| Total loan participations | $ | 3,036,443 | 0.80 | % | $ | 10,000 | $ | 3,306,370 | 1.68 | % | $ | 10,301 | |||||||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Right-of-use assets | $ | 71,084 | $ | 74,094 | |||||||
| Lease liabilities | 96,917 | 97,896 | |||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Operating lease cost | $ | 4,160 | $ | 4,025 | $ | 8,473 | $ | 7,993 | |||||||||||||||
| Finance lease cost | 120 | 119 | 237 | 242 | |||||||||||||||||||
| Variable lease cost | 1,127 | 657 | 2,362 | 1,475 | |||||||||||||||||||
| Total lease cost | $ | 5,407 | $ | 4,801 | $ | 11,072 | $ | 9,710 | |||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||
| Weighted-average remaining lease term (in years) | 7.78 | 7.85 | |||||||||
| Weighted-average discount rate | 4.38 | % | 4.35 | % | |||||||
| For the Three Months Ended June 30, 2026 | For the Six Months Ended June 30, 2026 | ||||||||||
| (Dollars in thousands, except per share data) | |||||||||||
| Net income applicable to common shares | $ | 105,213 | $ | 170,475 | |||||||
| Average number of common shares outstanding | 230,359,560 | 232,349,485 | |||||||||
| Less: Average unallocated ESOP shares | (12,089,937) | (12,152,480) | |||||||||
| Average number of common shares outstanding used to calculate basic earnings per common share | 218,269,623 | 220,197,005 | |||||||||
| Common stock equivalents | 974,611 | 1,187,602 | |||||||||
| Average number of common shares outstanding used to calculate diluted earnings per common share | 219,244,234 | 221,384,607 | |||||||||
| Earnings per common share: | |||||||||||
| Basic | $ | 0.48 | $ | 0.77 | |||||||
| Diluted | $ | 0.48 | $ | 0.77 | |||||||
| For the Three Months Ended June 30, 2025 | For the Six Months Ended June 30, 2025 | ||||||||||
| (Dollars in thousands, except per share data) | |||||||||||
| Net income (loss) applicable to common shares | $ | 100,233 | $ | (117,433) | |||||||
| Average number of common shares outstanding | 211,124,150 | 211,931,274 | |||||||||
| Less: Average unallocated ESOP shares | (12,593,096) | (12,655,838) | |||||||||
| Average number of common shares outstanding used to calculate basic earnings (loss) per common share | 198,531,054 | 199,275,436 | |||||||||
Common stock equivalents (1) | 461,057 | — | |||||||||
| Average number of common shares outstanding used to calculate diluted earnings (loss) per common share | 198,992,111 | 199,275,436 | |||||||||
| Earnings (loss) per common share: | |||||||||||
| Basic | $ | 0.50 | $ | (0.59) | |||||||
| Diluted | $ | 0.50 | $ | (0.59) | |||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Current recorded investment included in other assets | $ | 234,872 | $ | 223,698 | |||||||
| Commitments to fund qualified affordable housing projects included in recorded investment noted above | 65,894 | 54,263 | |||||||||
| For the Three Months Ended June 30, | For the Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Tax credits and benefits recognized | $ | 8,299 | $ | 7,490 | $ | 16,513 | $ | 15,192 | |||||||||||||||
| Amortization expense included in income tax expense | 6,200 | 5,738 | 12,935 | 11,742 | |||||||||||||||||||
| For the Three Months Ended June 30, | For the Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Combined federal and state income tax provision | $ | 29,604 | $ | 87 | $ | 48,169 | $ | 33,814 | |||||||||||||||
| Effective income tax rate | 22.0 | % | 0.1 | % | 22.0 | % | (40.4) | % | |||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Components of net periodic benefit cost: | |||||||||||||||||||||||
| Service cost | $ | 6,217 | $ | 5,733 | $ | 12,434 | $ | 11,466 | |||||||||||||||
| Interest cost | 5,289 | 5,535 | 10,577 | 10,900 | |||||||||||||||||||
| Expected return on plan assets | (9,827) | (9,495) | (19,655) | (18,990) | |||||||||||||||||||
| Prior service credit | (2,489) | (2,488) | (4,977) | (4,983) | |||||||||||||||||||
| Recognized net actuarial loss | 301 | 980 | 602 | 1,905 | |||||||||||||||||||
| Net periodic benefit cost | $ | (509) | $ | 265 | $ | (1,019) | $ | 298 | |||||||||||||||
| Time | Type of award | Shares granted | Vesting Period (Approximate from date of grant) (1) | ||||||||||||||
| 2026 | |||||||||||||||||
| May | RSA | 58,245 | 1 year | ||||||||||||||
| March | RSU | 445,254 | 3 years | ||||||||||||||
| March | PSU | 208,358 | 2.8 years | ||||||||||||||
| 2025 | |||||||||||||||||
| May | RSA | 54,236 | 1 year | ||||||||||||||
| March | RSU | 630,493 | 3 years | ||||||||||||||
| March | PSU | 339,503 | 2.8 years | ||||||||||||||
| For the Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | ||||||||||||||||||||||
| Restricted Stock Awards | Number of Shares | Weighted-Average Grant Price Per Share | Number of Shares | Weighted-Average Grant Price Per Share | |||||||||||||||||||
| Non-vested restricted stock as of the beginning of the respective period | 194,968 | $ | 17.75 | 316,945 | $ | 18.02 | |||||||||||||||||
| Granted | 58,245 | 19.31 | 54,236 | 15.58 | |||||||||||||||||||
| Vested | (71,106) | 15.41 | (70,786) | 14.18 | |||||||||||||||||||
| Forfeited | (2,139) | 14.87 | (2,983) | 14.87 | |||||||||||||||||||
| Non-vested restricted stock as of the end of the respective period | 179,968 | $ | 19.21 | 297,412 | $ | 18.52 | |||||||||||||||||
| For the Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | ||||||||||||||||||||||
| Restricted Stock Units | Number of Shares | Weighted-Average Grant Price Per Share | Number of Shares | Weighted-Average Grant Price Per Share | |||||||||||||||||||
| Non-vested restricted stock units as of the beginning of the respective period | 1,325,982 | $ | 16.87 | 1,356,522 | $ | 16.55 | |||||||||||||||||
| Granted | 445,254 | 19.72 | 630,493 | 17.73 | |||||||||||||||||||
| Vested | (469,185) | 16.77 | (517,801) | 17.21 | |||||||||||||||||||
| Forfeited | (21,373) | 18.91 | (15,277) | 14.91 | |||||||||||||||||||
| Non-vested restricted stock units as of the end of the respective period | 1,280,678 | $ | 17.86 | 1,453,937 | $ | 16.84 | |||||||||||||||||
| For the Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | ||||||||||||||||||||||
| Performance Stock Units | Number of Shares | Weighted-Average Grant Price Per Share | Number of Shares | Weighted-Average Grant Price Per Share | |||||||||||||||||||
| Non-vested performance stock units as of the beginning of the respective period | 617,915 | $ | 13.15 | 969,739 | $ | 16.63 | |||||||||||||||||
| Granted | 208,358 | 19.06 | 339,503 | 18.79 | |||||||||||||||||||
| Vested | (103,633) | 10.74 | (408,629) | 20.96 | |||||||||||||||||||
| Forfeited | (12,392) | 12.31 | (277,149) | 20.63 | |||||||||||||||||||
| Non-vested performance stock units as of the end of the respective period | 710,248 | $ | 15.25 | 623,464 | $ | 13.19 | |||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In millions) | |||||||||||||||||||||||
| Share-based compensation expense | $ | 4.4 | $ | 4.2 | $ | 8.6 | $ | 9.0 | |||||||||||||||
Related tax benefit (1) | 1.2 | 1.2 | 2.4 | 2.5 | |||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Commitments to extend credit | $ | 7,564,903 | $ | 7,302,751 | |||||||
| Standby letters of credit | 90,021 | 83,605 | |||||||||
| Forward commitments to sell loans | 26,500 | 35,861 | |||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||
| Weighted Average Rate | |||||||||||||||||||||||||||||
| Notional Amount | Weighted Average Maturity | Current Rate Paid | Receive Fixed Swap Rate | Fair Value (1) | |||||||||||||||||||||||||
| (In thousands) | (In Years) | (In thousands) | |||||||||||||||||||||||||||
| Interest rate swaps on loans | $ | 1,337,500 | 1.08 | 3.63 | % | 3.04 | % | $ | (54) | ||||||||||||||||||||
| Total | $ | 1,337,500 | $ | (54) | |||||||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||
| Weighted Average Rate | |||||||||||||||||||||||||||||
| Notional Amount | Weighted Average Maturity | Current Rate Paid | Receive Fixed Swap Rate | Fair Value (1) | |||||||||||||||||||||||||
| (In thousands) | (In Years) | (In thousands) | |||||||||||||||||||||||||||
| Interest rate swaps on loans | $ | 1,937,500 | 1.58 | 3.77 | % | 3.03 | % | $ | 6 | ||||||||||||||||||||
| Total | $ | 1,937,500 | $ | 6 | |||||||||||||||||||||||||
| June 30, 2026 | |||||||||||
| Number of Positions | Total Notional | ||||||||||
| (Dollars in thousands) | |||||||||||
| Interest rate swaps | 631 | $ | 4,983,165 | ||||||||
| Risk participation agreements | 166 | 647,135 | |||||||||
| Foreign exchange contracts: | |||||||||||
| Matched commercial customer book | 190 | 110,233 | |||||||||
| Foreign currency loan | 3 | 4,811 | |||||||||
| December 31, 2025 | |||||||||||
| Number of Positions | Total Notional | ||||||||||
| (Dollars in thousands) | |||||||||||
| Interest rate swaps | 628 | $ | 4,666,737 | ||||||||
| Risk participation agreements | 169 | 632,464 | |||||||||
| Foreign exchange contracts: | |||||||||||
| Matched commercial customer book | 124 | 85,353 | |||||||||
| Foreign currency loan | 3 | 3,152 | |||||||||
| Asset Derivatives | Liability Derivatives | ||||||||||||||||||||||||||||||||||
| Balance Sheet Location | Fair Value at June 30, 2026 | Fair Value at December 31, 2025 | Balance Sheet Location | Fair Value at June 30, 2026 | Fair Value at December 31, 2025 | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Derivatives designated as hedging instruments | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | $ | 1 | $ | 30 | $ | 55 | $ | 24 | |||||||||||||||||||||||||||
| Derivatives not designated as hedging instruments | |||||||||||||||||||||||||||||||||||
| Customer-related positions: | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | Other assets | $ | 50,426 | $ | 54,561 | Other liabilities | $ | 74,125 | $ | 74,358 | |||||||||||||||||||||||||
| Risk participation agreements | Other assets | 8 | 10 | Other liabilities | 6 | 7 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts - matched customer book | Other assets | 1,358 | 434 | Other liabilities | 1,318 | 330 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts - foreign currency loan | Other assets | 13 | 13 | Other liabilities | 8 | — | |||||||||||||||||||||||||||||
| $ | 51,805 | $ | 55,018 | $ | 75,457 | $ | 74,695 | ||||||||||||||||||||||||||||
| Total | $ | 51,806 | $ | 55,048 | $ | 75,512 | $ | 74,719 | |||||||||||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Derivatives designated as hedges: | |||||||||||||||||||||||
| (Loss) gain in OCI on derivatives | $ | (1,894) | $ | (432) | $ | (6,096) | $ | 5,973 | |||||||||||||||
| Loss reclassified from OCI into interest income (effective portion) | $ | (2,212) | $ | (7,981) | $ | (4,989) | $ | (15,914) | |||||||||||||||
| Gain recognized in income on derivatives (ineffective portion and amount excluded from effectiveness test) | |||||||||||||||||||||||
| Interest income | $ | — | $ | — | $ | — | $ | — | |||||||||||||||
| Other income | — | — | — | — | |||||||||||||||||||
| Total | $ | — | $ | — | $ | — | $ | — | |||||||||||||||
| Derivatives not designated as hedges: | |||||||||||||||||||||||
| Customer-related positions: | |||||||||||||||||||||||
| Loss recognized in interest rate swap income | $ | (123) | $ | (95) | $ | (246) | $ | (167) | |||||||||||||||
| Loss recognized in interest rate swap income for risk participation agreements | — | — | (1) | — | |||||||||||||||||||
| (Loss) gain recognized in other income for foreign currency exchange contracts: | |||||||||||||||||||||||
| Matched commercial customer book | (61) | 270 | (64) | 214 | |||||||||||||||||||
| Foreign currency loan | (3) | (27) | (8) | (113) | |||||||||||||||||||
| Net (loss) gain for derivatives not designated as hedges | $ | (187) | $ | 148 | $ | (319) | $ | (66) | |||||||||||||||
| As of June 30, 2026 | |||||||||||||||||||||||||||||||||||
| Gross Amounts Recognized | Gross Amounts Offset in the Consolidated Balance Sheet | Net Amounts Presented in the Consolidated Balance Sheet | Gross Amounts Not Offset in the Consolidated Balance Sheet | Net Amount | |||||||||||||||||||||||||||||||
| Description | Financial Instruments | Collateral Pledged/ (Received) | |||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Derivative Assets | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | $ | 1 | $ | — | $ | 1 | $ | — | $ | — | $ | 1 | |||||||||||||||||||||||
| Customer-related positions: | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | 50,426 | — | 50,426 | 7,058 | (34,181) | 9,187 | |||||||||||||||||||||||||||||
| Risk participation agreements | 8 | — | 8 | — | — | 8 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – matched customer book | 1,358 | — | 1,358 | — | — | 1,358 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts - foreign currency loan | 13 | — | 13 | — | — | 13 | |||||||||||||||||||||||||||||
| $ | 51,806 | $ | — | $ | 51,806 | $ | 7,058 | $ | (34,181) | $ | 10,567 | ||||||||||||||||||||||||
| Derivative Liabilities | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | $ | 55 | $ | — | $ | 55 | $ | — | $ | 55 | $ | — | |||||||||||||||||||||||
| Customer-related positions: | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | 74,125 | — | 74,125 | 7,058 | — | 67,067 | |||||||||||||||||||||||||||||
| Risk participation agreements | 6 | — | 6 | — | — | 6 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – matched customer book | 1,318 | — | 1,318 | — | — | 1,318 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – foreign currency loan | 8 | — | 8 | — | — | 8 | |||||||||||||||||||||||||||||
| $ | 75,512 | $ | — | $ | 75,512 | $ | 7,058 | $ | 55 | $ | 68,399 | ||||||||||||||||||||||||
| As of December 31, 2025 | |||||||||||||||||||||||||||||||||||
| Gross Amounts Recognized | Gross Amounts Offset in the Consolidated Balance Sheet | Net Amounts Presented in the Consolidated Balance Sheet | Gross Amounts Not Offset in the Consolidated Balance Sheet | Net Amount | |||||||||||||||||||||||||||||||
| Description | Financial Instruments | Collateral Pledged/ (Received) | |||||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Derivative Assets | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | $ | 30 | $ | — | $ | 30 | $ | — | $ | — | $ | 30 | |||||||||||||||||||||||
| Customer-related positions: | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | 54,561 | — | 54,561 | 19,067 | (15,321) | 20,173 | |||||||||||||||||||||||||||||
| Risk participation agreements | 10 | — | 10 | — | — | 10 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – matched customer book | 434 | — | 434 | — | (2) | 432 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – foreign currency loan | 13 | — | 13 | — | — | 13 | |||||||||||||||||||||||||||||
| $ | 55,048 | $ | — | $ | 55,048 | $ | 19,067 | $ | (15,323) | $ | 20,658 | ||||||||||||||||||||||||
| Derivative Liabilities | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | $ | 24 | $ | — | $ | 24 | $ | — | $ | 24 | $ | — | |||||||||||||||||||||||
| Customer-related positions: | |||||||||||||||||||||||||||||||||||
| Interest rate swaps | 74,358 | — | 74,358 | 19,067 | — | 55,291 | |||||||||||||||||||||||||||||
| Risk participation agreements | 7 | — | 7 | — | — | 7 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – matched customer book | 330 | — | 330 | — | — | 330 | |||||||||||||||||||||||||||||
| Foreign currency exchange contracts – foreign currency loan | — | — | — | — | — | — | |||||||||||||||||||||||||||||
| $ | 74,719 | $ | — | $ | 74,719 | $ | 19,067 | $ | 24 | $ | 55,628 | ||||||||||||||||||||||||
| Fair Value Measurements at Reporting Date Using | |||||||||||||||||||||||
| Balance as of June 30, 2026 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | ||||||||||||||||||||
| Description | |||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Assets | |||||||||||||||||||||||
| Securities available for sale: | |||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 2,794,837 | $ | — | $ | 2,794,837 | $ | — | |||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 1,024,510 | — | 1,024,510 | — | |||||||||||||||||||
| U.S. Treasury securities | 50,066 | 50,066 | — | — | |||||||||||||||||||
| State and municipal bonds and obligations | 178,415 | — | 178,415 | — | |||||||||||||||||||
| Investments for employee retirement benefits | 110,648 | 95,488 | 15,160 | — | |||||||||||||||||||
| Deferred compensation investments | 2,354 | 2,354 | — | — | |||||||||||||||||||
| Loans held for sale | 42,649 | — | 42,649 | — | |||||||||||||||||||
| Mortgage servicing rights | 39,642 | — | — | 39,642 | |||||||||||||||||||
| Interest rate swap contracts: | |||||||||||||||||||||||
| Cash flow hedges - interest rate positions | 1 | — | 1 | — | |||||||||||||||||||
| Customer-related positions | 50,426 | — | 50,426 | — | |||||||||||||||||||
| Risk participation agreements | 8 | — | 8 | — | |||||||||||||||||||
| Foreign currency forward contracts: | |||||||||||||||||||||||
| Matched customer book | 1,358 | — | 1,358 | — | |||||||||||||||||||
| Foreign currency loan | 13 | — | 13 | — | |||||||||||||||||||
| Mortgage derivatives | 401 | — | 401 | — | |||||||||||||||||||
| Total | $ | 4,295,328 | $ | 147,908 | $ | 4,107,778 | $ | 39,642 | |||||||||||||||
| Liabilities | |||||||||||||||||||||||
| Interest rate swap contracts: | |||||||||||||||||||||||
| Cash flow hedges - interest rate positions | 55 | — | 55 | — | |||||||||||||||||||
| Customer-related positions | 74,125 | — | 74,125 | — | |||||||||||||||||||
| Risk participation agreements | 6 | — | 6 | — | |||||||||||||||||||
| Foreign currency forward contracts: | |||||||||||||||||||||||
| Matched customer book | 1,318 | — | 1,318 | — | |||||||||||||||||||
| Foreign currency loan | 8 | — | 8 | — | |||||||||||||||||||
| Mortgage derivatives | 66 | — | 66 | — | |||||||||||||||||||
| Total | $ | 75,578 | $ | — | $ | 75,578 | $ | — | |||||||||||||||
| Fair Value Measurements at Reporting Date Using | |||||||||||||||||||||||
| Description | Balance as of December 31, 2025 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | |||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Assets | |||||||||||||||||||||||
| Securities available for sale: | |||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 2,533,309 | $ | — | $ | 2,533,309 | $ | — | |||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 1,060,331 | — | 1,060,331 | — | |||||||||||||||||||
| U.S. Treasury securities | 50,350 | 50,350 | — | — | |||||||||||||||||||
| State and municipal bonds and obligations | 181,579 | — | 181,579 | — | |||||||||||||||||||
| Investments for employee retirement benefits | 106,534 | 94,736 | 11,798 | — | |||||||||||||||||||
| Deferred compensation plan investments | 2,384 | 2,384 | — | — | |||||||||||||||||||
| Loans held for sale | 22,761 | — | 22,761 | — | |||||||||||||||||||
| Mortgage servicing rights | 40,709 | — | — | 40,709 | |||||||||||||||||||
| Interest rate swap contracts: | |||||||||||||||||||||||
| Cash flow hedges - interest rate positions | 30 | — | 30 | — | |||||||||||||||||||
| Customer-related positions | 54,561 | — | 54,561 | — | |||||||||||||||||||
| Risk participation agreements | 10 | — | 10 | — | |||||||||||||||||||
| Foreign currency forward contracts: | |||||||||||||||||||||||
| Matched customer book | 434 | — | 434 | — | |||||||||||||||||||
| Foreign currency loan | 13 | — | 13 | — | |||||||||||||||||||
| Mortgage derivatives | 458 | — | 458 | — | |||||||||||||||||||
| Total | $ | 4,053,463 | $ | 147,470 | $ | 3,865,284 | $ | 40,709 | |||||||||||||||
| Liabilities | |||||||||||||||||||||||
| Interest rate swap contracts: | |||||||||||||||||||||||
| Cash flow hedges - interest rate positions | $ | 24 | $ | — | $ | 24 | $ | — | |||||||||||||||
| Customer-related positions | 74,358 | — | 74,358 | — | |||||||||||||||||||
| Risk participation agreements | 7 | — | 7 | — | |||||||||||||||||||
| Foreign currency forward contracts: | |||||||||||||||||||||||
| Matched customer book | 330 | — | 330 | — | |||||||||||||||||||
| Mortgage derivatives | 100 | — | 100 | — | |||||||||||||||||||
| Total | $ | 74,819 | $ | — | $ | 74,819 | $ | — | |||||||||||||||
| Fair Value Measurements at Reporting Date Using | |||||||||||||||||||||||
| Description | Balance as of June 30, 2026 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | |||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Assets | |||||||||||||||||||||||
| Individually assessed collateral-dependent loans whose fair value is based upon appraisals | $ | 50,606 | $ | — | $ | — | $ | 50,606 | |||||||||||||||
| Fair Value Measurements at Reporting Date Using | |||||||||||||||||||||||
| Description | Balance as of December 31, 2025 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | |||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Assets | |||||||||||||||||||||||
| Individually assessed collateral-dependent loans whose fair value is based upon appraisals | $ | 96,022 | $ | — | $ | — | $ | 96,022 | |||||||||||||||
| Fair Value Measurements at Reporting Date Using | |||||||||||||||||||||||||||||
| Description | Carrying Value as of June 30, 2026 | Fair Value as of June 30, 2026 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | ||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||
| Assets | |||||||||||||||||||||||||||||
| Held to maturity securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 199,766 | $ | 182,400 | $ | — | $ | 182,400 | $ | — | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 181,682 | 169,059 | — | 169,059 | — | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 329,860 | 335,230 | — | 335,230 | — | ||||||||||||||||||||||||
| Corporate bonds | 52,886 | 54,302 | — | 54,302 | — | ||||||||||||||||||||||||
| Loans, net of allowance for loan losses | 22,956,047 | 22,668,384 | — | — | 22,668,384 | ||||||||||||||||||||||||
| FHLB stock | 21,250 | 21,250 | — | 21,250 | — | ||||||||||||||||||||||||
| Bank-owned life insurance | 311,387 | 311,387 | — | 311,387 | — | ||||||||||||||||||||||||
| Liabilities | |||||||||||||||||||||||||||||
| Deposits | $ | 25,919,312 | $ | 25,916,198 | $ | — | $ | 25,916,198 | $ | — | |||||||||||||||||||
| FHLB advances | 364,412 | 361,145 | — | 361,145 | — | ||||||||||||||||||||||||
| Interest rate swap collateral funds | 34,181 | 34,181 | — | 34,181 | — | ||||||||||||||||||||||||
| Fair Value Measurements at Reporting Date Using | |||||||||||||||||||||||||||||
| Description | Carrying Value as of December 31, 2025 | Fair Value as of December 31, 2025 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | ||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||
| Assets | |||||||||||||||||||||||||||||
| Held to maturity securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 210,142 | $ | 194,547 | $ | — | $ | 194,547 | $ | — | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 185,185 | 173,584 | — | 173,584 | — | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 167,346 | 169,861 | — | 169,861 | — | ||||||||||||||||||||||||
| Corporate bonds | 36,884 | 37,982 | — | 37,982 | — | ||||||||||||||||||||||||
| Loans, net of allowance for loan losses | 22,753,224 | 22,365,428 | — | — | 22,365,428 | ||||||||||||||||||||||||
| FHLB stock | 13,838 | 13,838 | — | 13,838 | — | ||||||||||||||||||||||||
| Bank-owned life insurance | 307,836 | 307,836 | — | 307,836 | — | ||||||||||||||||||||||||
| Liabilities | |||||||||||||||||||||||||||||
| Deposits | $ | 25,470,751 | $ | 25,469,630 | $ | — | $ | 25,469,630 | $ | — | |||||||||||||||||||
| FHLB advances | 199,617 | 196,450 | — | 196,450 | — | ||||||||||||||||||||||||
| Interest rate swap collateral funds | 15,321 | 15,321 | — | 15,321 | — | ||||||||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Investment advisory fees | $ | 19,693 | $ | 17,282 | $ | 38,007 | $ | 33,719 | |||||||||||||||
| Service charges on deposit accounts | 10,044 | 8,244 | 19,971 | 16,559 | |||||||||||||||||||
| Card income | 6,038 | 4,230 | 11,835 | 8,150 | |||||||||||||||||||
| Other noninterest income | 2,876 | 2,771 | 5,992 | 5,228 | |||||||||||||||||||
| Total noninterest income in-scope of ASC 606 | 38,651 | 32,527 | 75,805 | 63,656 | |||||||||||||||||||
| Total noninterest income (loss) out-of-scope of ASC 606 | 18,937 | 10,324 | 25,340 | (256,923) | |||||||||||||||||||
| Total noninterest income (loss) | $ | 57,588 | $ | 42,851 | $ | 101,145 | $ | (193,267) | |||||||||||||||
| Three Months Ended June 30, 2026 | Six Months Ended June 30, 2026 | ||||||||||||||||||||||||||||||||||
| Pre Tax Amount | Tax (Expense) Benefit | After Tax Amount | Pre Tax Amount | Tax (Expense) Benefit | After Tax Amount | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Unrealized losses on securities available for sale: | |||||||||||||||||||||||||||||||||||
| Change in fair value of securities available for sale | $ | (11,495) | $ | 2,899 | $ | (8,596) | $ | (35,076) | $ | 8,610 | $ | (26,466) | |||||||||||||||||||||||
| Less: reclassification adjustment for losses included in net income | — | — | — | — | — | — | |||||||||||||||||||||||||||||
Net change in fair value of securities available for sale | (11,495) | 2,899 | (8,596) | (35,076) | 8,610 | (26,466) | |||||||||||||||||||||||||||||
| Unrealized gains (losses) on cash flow hedges: | |||||||||||||||||||||||||||||||||||
Change in fair value of cash flow hedges | (1,894) | 523 | (1,371) | (6,096) | 1,683 | (4,413) | |||||||||||||||||||||||||||||
| Less: net cash flow hedge losses reclassified into interest income | (2,212) | 610 | (1,602) | (4,989) | 1,377 | (3,612) | |||||||||||||||||||||||||||||
Net change in fair value of cash flow hedges | 318 | (87) | 231 | (1,107) | 306 | (801) | |||||||||||||||||||||||||||||
Defined benefit pension plans: | |||||||||||||||||||||||||||||||||||
| Change in actuarial net loss | — | — | — | — | — | — | |||||||||||||||||||||||||||||
| Less: amortization of actuarial net loss | (301) | 83 | (218) | (602) | 166 | (436) | |||||||||||||||||||||||||||||
| Less: accretion of prior service credit | 2,489 | (687) | 1,802 | 4,977 | (1,374) | 3,603 | |||||||||||||||||||||||||||||
Net change in other comprehensive income for defined benefit postretirement plans | (2,188) | 604 | (1,584) | (4,375) | 1,208 | (3,167) | |||||||||||||||||||||||||||||
| Total other comprehensive loss | $ | (13,365) | $ | 3,416 | $ | (9,949) | $ | (40,558) | $ | 10,124 | $ | (30,434) | |||||||||||||||||||||||
| Three Months Ended June 30, 2025 | Six Months Ended June 30, 2025 | ||||||||||||||||||||||||||||||||||
| Pre Tax Amount | Tax Benefit (Expense) | After Tax Amount | Pre Tax Amount | Tax Benefit (Expense) | After Tax Amount | ||||||||||||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||||||||||||||
| Unrealized gains on securities available for sale: | |||||||||||||||||||||||||||||||||||
Change in fair value of securities available for sale | $ | 26,211 | $ | 13,610 | $ | 39,821 | $ | 99,640 | $ | (90,828) | $ | 8,812 | |||||||||||||||||||||||
| Less: reclassification adjustment for losses included in net income | — | 19,936 | 19,936 | (269,638) | 7,247 | (262,391) | |||||||||||||||||||||||||||||
Net change in fair value of securities available for sale | 26,211 | (6,326) | 19,885 | 369,278 | (98,075) | 271,203 | |||||||||||||||||||||||||||||
| Unrealized gains on cash flow hedges: | |||||||||||||||||||||||||||||||||||
Change in fair value of cash flow hedges | (432) | 120 | (312) | 5,973 | (1,654) | 4,319 | |||||||||||||||||||||||||||||
| Less: net cash flow hedge losses reclassified into interest income | (7,981) | 2,211 | (5,770) | (15,914) | 4,408 | (11,506) | |||||||||||||||||||||||||||||
Net change in fair value of cash flow hedges | 7,549 | (2,091) | 5,458 | 21,887 | (6,062) | 15,825 | |||||||||||||||||||||||||||||
Defined benefit pension plans: | |||||||||||||||||||||||||||||||||||
| Change in actuarial net loss | — | — | — | — | — | — | |||||||||||||||||||||||||||||
| Less: amortization of actuarial net loss | (980) | 272 | (708) | (1,905) | 528 | (1,377) | |||||||||||||||||||||||||||||
| Less: accretion of prior service credit | 2,488 | (689) | 1,799 | 4,983 | (1,380) | 3,603 | |||||||||||||||||||||||||||||
Net change in other comprehensive income for defined benefit postretirement plans | (1,508) | 417 | (1,091) | (3,078) | 852 | (2,226) | |||||||||||||||||||||||||||||
| Total other comprehensive income | $ | 32,252 | $ | (8,000) | $ | 24,252 | $ | 388,087 | $ | (103,285) | $ | 284,802 | |||||||||||||||||||||||
| Unrealized Gains and (Losses) on Available for Sale Securities | Unrealized Gains and (Losses) on Cash Flow Hedges | Defined Benefit Pension Plans | Total | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
| Beginning Balance: January 1, 2026 | $ | (259,361) | $ | (2,990) | $ | 34,988 | $ | (227,363) | |||||||||||||||
| Other comprehensive income before reclassifications | (26,466) | (4,413) | — | (30,879) | |||||||||||||||||||
| Less: Amounts reclassified from accumulated other comprehensive loss | — | (3,612) | 3,167 | (445) | |||||||||||||||||||
| Net current-period other comprehensive loss | (26,466) | (801) | (3,167) | (30,434) | |||||||||||||||||||
| Ending Balance: June 30, 2026 | $ | (285,827) | $ | (3,791) | $ | 31,821 | $ | (257,797) | |||||||||||||||
| Beginning Balance: January 1, 2025 | $ | (583,875) | $ | (26,470) | $ | 26,016 | $ | (584,329) | |||||||||||||||
| Other comprehensive income before reclassifications | 8,812 | 4,319 | — | 13,131 | |||||||||||||||||||
| Less: Amounts reclassified from accumulated other comprehensive loss | (262,391) | (11,506) | 2,226 | (271,671) | |||||||||||||||||||
| Net current-period other comprehensive income (loss) | 271,203 | 15,825 | (2,226) | 284,802 | |||||||||||||||||||
| Ending Balance: June 30, 2025 | $ | (312,672) | $ | (10,645) | $ | 23,790 | $ | (299,527) | |||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (Dollars in thousands, except per share data) | |||||||||||||||||||||||
| Net income (loss) (GAAP) | $ | 105,213 | $ | 100,233 | $ | 170,475 | $ | (117,433) | |||||||||||||||
| Non-GAAP adjustments: | |||||||||||||||||||||||
| Add: | |||||||||||||||||||||||
| Noninterest income components: | |||||||||||||||||||||||
| Losses on sales of securities available for sale, net | — | — | — | 269,638 | |||||||||||||||||||
| Gain on sale of other equity investment | (16) | — | (16) | — | |||||||||||||||||||
| Losses (gains) on sales of other assets | 284 | (618) | 1,788 | 12 | |||||||||||||||||||
| Noninterest expense components: | |||||||||||||||||||||||
| Expenses associated with staffing reorganization | — | — | 2,706 | — | |||||||||||||||||||
| Merger and acquisition expenses | 1,550 | 2,582 | 29,611 | 2,582 | |||||||||||||||||||
| Total impact of non-GAAP adjustments | 1,818 | 1,964 | 34,089 | 272,232 | |||||||||||||||||||
Less net tax benefit associated with non-GAAP adjustment (1) | 501 | 20,472 | 9,408 | 5,590 | |||||||||||||||||||
| Non-GAAP adjustments, net of tax | $ | 1,317 | $ | (18,508) | $ | 24,681 | $ | 266,642 | |||||||||||||||
| Operating net income (non-GAAP) | $ | 106,530 | $ | 81,725 | $ | 195,156 | $ | 149,209 | |||||||||||||||
| Weighted average common shares outstanding during the period: | |||||||||||||||||||||||
| Basic | 218,269,623 | 198,531,054 | 220,197,005 | 199,275,436 | |||||||||||||||||||
| Diluted | 219,244,234 | 198,992,111 | 221,384,607 | 199,275,436 | |||||||||||||||||||
Diluted for operating earnings per share computation (2) | 219,244,234 | 198,992,111 | 221,384,607 | 200,095,230 | |||||||||||||||||||
| Earnings (losses) per share, basic | $ | 0.48 | $ | 0.50 | $ | 0.77 | $ | (0.59) | |||||||||||||||
| Earnings (losses) per share, diluted | $ | 0.48 | $ | 0.50 | $ | 0.77 | $ | (0.59) | |||||||||||||||
| Operating earnings per share, basic (non-GAAP) | $ | 0.49 | $ | 0.41 | $ | 0.89 | $ | 0.75 | |||||||||||||||
| Operating earnings per share, diluted (non-GAAP) | $ | 0.49 | $ | 0.41 | $ | 0.88 | $ | 0.75 | |||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Net interest income (GAAP) | $ | 251,932 | $ | 202,030 | $ | 496,588 | $ | 390,929 | |||||||||||||||
| Add: | |||||||||||||||||||||||
| Tax-equivalent adjustment (non-GAAP) | 6,222 | 4,805 | 12,391 | 9,412 | |||||||||||||||||||
| Fully-taxable equivalent net interest income on an operating basis (non-GAAP) | 258,154 | 206,835 | 508,979 | 400,341 | |||||||||||||||||||
| Noninterest income (loss) (GAAP) | 57,588 | 42,851 | 101,145 | (193,267) | |||||||||||||||||||
| Less: | |||||||||||||||||||||||
| Losses on sales of securities available for sale, net | — | — | — | (269,638) | |||||||||||||||||||
| Gain on sale of other equity investment | 16 | — | 16 | — | |||||||||||||||||||
| (Losses) gains on sales of other assets | (284) | 618 | (1,788) | (12) | |||||||||||||||||||
| Noninterest income on an operating basis (non-GAAP) | 57,856 | 42,233 | 102,917 | 76,383 | |||||||||||||||||||
| Noninterest expense (GAAP) | $ | 167,948 | $ | 136,961 | $ | 366,578 | $ | 267,081 | |||||||||||||||
| Less: | |||||||||||||||||||||||
| Expenses associated with staffing reorganization | — | — | 2,706 | — | |||||||||||||||||||
| Merger and acquisition expenses | 1,550 | 2,582 | 29,611 | 2,582 | |||||||||||||||||||
| Noninterest expense on an operating basis (non-GAAP) | 166,398 | 134,379 | 334,261 | 264,499 | |||||||||||||||||||
| Amortization of intangible assets | 11,643 | 7,807 | 23,287 | 15,615 | |||||||||||||||||||
| Noninterest expense for calculation of operating efficiency ratio (non-GAAP) | $ | 154,755 | $ | 126,572 | $ | 310,974 | $ | 248,884 | |||||||||||||||
| Total revenue (GAAP) | $ | 309,520 | $ | 244,881 | $ | 597,733 | $ | 197,662 | |||||||||||||||
| Total operating revenue (non-GAAP) | $ | 316,010 | $ | 249,068 | $ | 611,896 | $ | 476,724 | |||||||||||||||
| Ratios: | |||||||||||||||||||||||
| Efficiency ratio (GAAP) | 54.26 | % | 55.93 | % | 61.33 | % | 135.12 | % | |||||||||||||||
| Operating efficiency ratio (non-GAAP) | 48.97 | % | 50.82 | % | 50.82 | % | 52.21 | % | |||||||||||||||
| As of June 30, | As of December 31, | ||||||||||
| 2026 | 2025 | ||||||||||
| (Dollars in thousands, except per share data) | |||||||||||
| Tangible shareholders’ equity: | |||||||||||
| Total shareholders’ equity (GAAP) | $ | 4,283,214 | $ | 4,340,553 | |||||||
| Less: Goodwill and other intangibles | 1,277,643 | 1,300,930 | |||||||||
| Tangible shareholders’ equity (non-GAAP) | 3,005,571 | 3,039,623 | |||||||||
| Tangible assets: | |||||||||||
| Total assets (GAAP) | 31,141,955 | 30,586,856 | |||||||||
| Less: Goodwill and other intangibles | 1,277,643 | 1,300,930 | |||||||||
| Tangible assets (non-GAAP) | $ | 29,864,312 | $ | 29,285,926 | |||||||
| Shareholders’ equity to assets ratio (GAAP) | 13.8 | % | 14.2 | % | |||||||
| Tangible shareholders’ equity to tangible assets ratio (non-GAAP) | 10.1 | % | 10.4 | % | |||||||
| Book value per share: | |||||||||||
| Common shares issued and outstanding | 228,858,364 | 235,646,558 | |||||||||
| Book value per share (GAAP) | $ | 18.72 | $ | 18.42 | |||||||
| Tangible book value per share (non-GAAP) | $ | 13.13 | $ | 12.90 | |||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Tangible net income (loss): | |||||||||||||||||||||||
| Net income (loss) (GAAP) | $ | 105,213 | $ | 100,233 | $ | 170,475 | $ | (117,433) | |||||||||||||||
| Add: Amortization of intangible assets | 11,643 | 7,807 | 23,287 | 15,615 | |||||||||||||||||||
Less: Tax effect of amortization of intangible assets (3) | 3,213 | 2,163 | 6,427 | 4,325 | |||||||||||||||||||
| Tangible net income (loss) (non-GAAP) | $ | 113,643 | $ | 105,877 | $ | 187,335 | $ | (106,143) | |||||||||||||||
Operating net income (non-GAAP) (1) | $ | 106,530 | $ | 81,725 | $ | 195,156 | $ | 149,209 | |||||||||||||||
| Add: Amortization of intangible assets | 11,643 | 7,807 | 23,287 | 15,615 | |||||||||||||||||||
Less: Tax effect of amortization of intangible assets (3) | 3,213 | 2,163 | 6,427 | 4,325 | |||||||||||||||||||
| Tangible operating net income (non-GAAP) | $ | 114,960 | $ | 87,369 | $ | 212,016 | $ | 160,499 | |||||||||||||||
| Average tangible shareholders’ equity: | |||||||||||||||||||||||
| Average total shareholders’ equity (GAAP) | $ | 4,293,362 | $ | 3,623,169 | $ | 4,327,257 | $ | 3,603,341 | |||||||||||||||
| Less: Average goodwill and other intangibles | 1,284,552 | 1,039,634 | 1,290,658 | 1,043,530 | |||||||||||||||||||
| Average tangible shareholders’ equity (non-GAAP) | $ | 3,008,810 | $ | 2,583,535 | $ | 3,036,599 | $ | 2,559,811 | |||||||||||||||
| Ratios: | |||||||||||||||||||||||
Return (loss) on average total shareholders’ equity (GAAP) (2) | 9.83 | % | 11.10 | % | 7.94 | % | (6.57) | % | |||||||||||||||
Return (loss) on average tangible shareholders’ equity (non-GAAP) (2) | 15.15 | % | 16.44 | % | 12.44 | % | (8.36) | % | |||||||||||||||
Operating return on average tangible shareholders’ equity (non-GAAP) (2) | 15.33 | % | 13.56 | % | 14.08 | % | 12.64 | % | |||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | Change | |||||||||||||||||||||
| Amount ($) | Percentage (%) | ||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Cash and cash equivalents | $ | 256,163 | $ | 316,869 | $ | (60,706) | (19.2) | % | |||||||||||||||
| Securities available for sale | 4,047,828 | 3,825,569 | 222,259 | 5.8 | % | ||||||||||||||||||
| Securities held to maturity | 764,194 | 599,557 | 164,637 | 27.5 | % | ||||||||||||||||||
| Loans, net of allowance for loan losses | 22,956,047 | 22,753,224 | 202,823 | 0.9 | % | ||||||||||||||||||
| Federal Home Loan Bank stock | 21,250 | 13,838 | 7,412 | 53.6 | % | ||||||||||||||||||
| Goodwill and other intangible assets | 1,277,643 | 1,300,930 | (23,287) | (1.8) | % | ||||||||||||||||||
| Deposits | 25,919,312 | 25,470,751 | 448,561 | 1.8 | % | ||||||||||||||||||
| Borrowed funds | 398,593 | 214,938 | 183,655 | 85.4 | % | ||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Available for sale securities, at fair value: | |||||||||||
| Government-sponsored residential mortgage-backed securities | $ | 2,794,837 | $ | 2,533,309 | |||||||
| Government-sponsored commercial mortgage-backed securities | 1,024,510 | 1,060,331 | |||||||||
| U.S. Treasury securities | 50,066 | 50,350 | |||||||||
| State and municipal bonds and obligations | 178,415 | 181,579 | |||||||||
| Total available for sale securities, at fair value | 4,047,828 | 3,825,569 | |||||||||
| Held to maturity securities, at amortized cost: | |||||||||||
| Government-sponsored residential mortgage-backed securities | 199,766 | 210,142 | |||||||||
| Government-sponsored commercial mortgage-backed securities | 181,682 | 185,185 | |||||||||
| State and municipal bonds and obligations | 329,860 | 167,346 | |||||||||
| Corporate bonds | 52,886 | 36,884 | |||||||||
| Total held to maturity securities, at amortized cost | 764,194 | 599,557 | |||||||||
| Total | $ | 4,812,022 | $ | 4,425,126 | |||||||
Securities Maturing as of June 30, 2026 (1) | |||||||||||||||||||||||||||||
| Within One Year | After One Year But Within Five Years | After Five Years But Within Ten Years | After Ten Years | Total | |||||||||||||||||||||||||
| Available for sale securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | 2.36 | % | 2.46 | % | 2.22 | % | 3.12 | % | 3.11 | % | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 3.05 | 3.97 | 1.96 | 2.05 | 3.03 | ||||||||||||||||||||||||
| U.S. Treasury securities | 4.19 | — | — | — | 4.19 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 2.64 | 3.08 | 3.79 | 4.17 | 3.80 | ||||||||||||||||||||||||
| Total available for sale securities | 3.40 | % | 3.90 | % | 2.91 | % | 3.01 | % | 3.13 | % | |||||||||||||||||||
| Held to maturity securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | — | % | — | % | — | % | 2.85 | % | 2.85 | % | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | — | 2.15 | 2.35 | — | 2.21 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | — | — | 5.18 | 5.59 | 5.59 | ||||||||||||||||||||||||
| Corporate bonds | 7.35 | — | 6.86 | 6.25 | 6.81 | ||||||||||||||||||||||||
| Total held to maturity securities | 7.35 | % | 2.15 | % | 4.47 | % | 4.57 | % | 4.16 | % | |||||||||||||||||||
| Total | 3.42 | % | 3.57 | % | 3.66 | % | 3.21 | % | 3.28 | % | |||||||||||||||||||
Securities Maturing as of December 31, 2025 (1) | |||||||||||||||||||||||||||||
| Within One Year | After One Year But Within Five Years | After Five Years But Within Ten Years | After Ten Years | Total | |||||||||||||||||||||||||
| Available for sale securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | 2.54 | % | 2.43 | % | 2.21 | % | 2.92 | % | 2.91 | % | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | 2.10 | 3.94 | 1.98 | 2.02 | 3.02 | ||||||||||||||||||||||||
| U.S. Treasury securities | 4.19 | — | — | — | 4.19 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | 2.52 | 2.93 | 3.74 | 4.15 | 3.75 | ||||||||||||||||||||||||
| Total available for sale securities | 3.68 | % | 3.86 | % | 2.78 | % | 2.83 | % | 3.00 | % | |||||||||||||||||||
| Held to maturity securities: | |||||||||||||||||||||||||||||
| Government-sponsored residential mortgage-backed securities | — | % | — | % | — | % | 2.87 | % | 2.87 | % | |||||||||||||||||||
| Government-sponsored commercial mortgage-backed securities | — | 2.16 | 2.35 | — | 2.21 | ||||||||||||||||||||||||
| State and municipal bonds and obligations | — | % | — | % | — | % | 5.54 | % | 5.54 | % | |||||||||||||||||||
| Corporate bonds | — | 7.35 | 7.10 | — | 7.11 | ||||||||||||||||||||||||
| Total held to maturity securities | — | % | 2.20 | % | 4.23 | % | 4.05 | % | 3.67 | % | |||||||||||||||||||
| Total | 3.68 | % | 3.58 | % | 3.39 | % | 2.95 | % | 3.08 | % | |||||||||||||||||||
| Change | |||||||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | Amount ($) | Percentage (%) | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Commercial and industrial | $ | 4,690,914 | $ | 4,324,615 | $ | 366,299 | 8.5 | % | |||||||||||||||
| Commercial real estate | 9,390,773 | 9,529,071 | (138,298) | (1.5) | % | ||||||||||||||||||
| Commercial construction | 544,546 | 567,597 | (23,051) | (4.1) | % | ||||||||||||||||||
| Business banking | 1,561,530 | 1,603,489 | (41,959) | (2.6) | % | ||||||||||||||||||
| Residential real estate | 5,442,043 | 5,516,114 | (74,071) | (1.3) | % | ||||||||||||||||||
| Consumer home equity | 1,824,835 | 1,758,099 | 66,736 | 3.8 | % | ||||||||||||||||||
| Other consumer | 258,458 | 275,511 | (17,053) | (6.2) | % | ||||||||||||||||||
| Total gross loans | $ | 23,713,099 | $ | 23,574,496 | $ | 138,603 | 0.6 | % | |||||||||||||||
| Delinquency Rate as of | |||||||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| Portfolio | |||||||||||
| Commercial and industrial | 0.16 | % | 0.17 | % | |||||||
| Commercial real estate | 0.23 | % | 0.22 | % | |||||||
| Commercial construction | — | % | 0.18 | % | |||||||
| Business banking | 1.43 | % | 1.83 | % | |||||||
| Residential real estate | 0.92 | % | 1.02 | % | |||||||
| Consumer home equity | 1.11 | % | 0.99 | % | |||||||
| Other consumer | 0.38 | % | 0.35 | % | |||||||
| Total | 0.51 | % | 0.56 | % | |||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Commercial real estate | |||||||||||
| Pass | $ | 986,378 | $ | 1,065,028 | |||||||
| Special mention | 24,625 | 38,503 | |||||||||
| Substandard | 124,740 | 105,824 | |||||||||
| Doubtful | 7,235 | 36,772 | |||||||||
| Total commercial real estate | $ | 1,142,978 | $ | 1,246,127 | |||||||
| Commercial construction | |||||||||||
| Pass | $ | 12,501 | $ | 25,021 | |||||||
| Special mention | — | — | |||||||||
| Substandard | — | — | |||||||||
| Doubtful | — | — | |||||||||
| Total commercial construction | $ | 12,501 | $ | 25,021 | |||||||
| Total | $ | 1,155,479 | $ | 1,271,148 | |||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Commercial real estate | |||||||||||
| Office | $ | 552,545 | $ | 562,157 | |||||||
| Medical office | 100,142 | 135,003 | |||||||||
| Mixed-use | 388,615 | 425,529 | |||||||||
| Laboratory/life science | 101,676 | 123,438 | |||||||||
| Total commercial real estate | $ | 1,142,978 | $ | 1,246,127 | |||||||
| Commercial construction | |||||||||||
| Office | $ | — | $ | 489 | |||||||
| Medical office | 12,501 | 5,324 | |||||||||
| Mixed-use | — | 19,208 | |||||||||
| Laboratory/life science | — | — | |||||||||
| Total commercial construction | $ | 12,501 | $ | 25,021 | |||||||
| Total | $ | 1,155,479 | $ | 1,271,148 | |||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Net loan (recoveries) charge-offs: | |||||||||||||||||||||||
| Commercial and industrial | $ | 22 | $ | 75 | $ | 5,728 | $ | 64 | |||||||||||||||
| Commercial real estate | 8,256 | (578) | 11,844 | 10,315 | |||||||||||||||||||
| Commercial construction | — | — | — | — | |||||||||||||||||||
| Business banking | 827 | 57 | 911 | 77 | |||||||||||||||||||
| Residential real estate | 28 | (36) | (4) | (75) | |||||||||||||||||||
| Consumer home equity | 2 | (5) | (57) | (5) | |||||||||||||||||||
| Other consumer | 645 | 284 | 1,063 | 663 | |||||||||||||||||||
| Total net loan charge-offs (recoveries) | $ | 9,780 | $ | (203) | $ | 19,485 | $ | 11,039 | |||||||||||||||
| Average loans: | |||||||||||||||||||||||
| Commercial and industrial | $ | 4,454,865 | $ | 3,525,189 | $ | 4,388,766 | $ | 3,433,109 | |||||||||||||||
| Commercial real estate | 9,363,853 | 7,255,875 | 9,423,315 | 7,240,123 | |||||||||||||||||||
| Commercial construction | 519,980 | 468,953 | 513,724 | 460,614 | |||||||||||||||||||
| Business banking | 1,517,501 | 1,283,430 | 1,525,410 | 1,285,984 | |||||||||||||||||||
| Residential real estate | 5,163,289 | 3,887,402 | 5,183,567 | 3,899,823 | |||||||||||||||||||
| Consumer home equity | 1,792,051 | 1,437,043 | 1,774,249 | 1,415,780 | |||||||||||||||||||
| Other consumer | 219,389 | 217,281 | 221,877 | 219,675 | |||||||||||||||||||
Average total loans (1) | $ | 23,030,928 | $ | 18,075,173 | $ | 23,030,908 | $ | 17,955,108 | |||||||||||||||
| Net charge-offs (recoveries) to average loans outstanding during the period: | |||||||||||||||||||||||
| Commercial and industrial | 0.00 | % | 0.00 | % | 0.13 | % | 0.00 | % | |||||||||||||||
| Commercial real estate | 0.09 | (0.01) | 0.13 | 0.14 | |||||||||||||||||||
| Commercial construction | — | — | — | — | |||||||||||||||||||
| Business banking | 0.05 | 0.00 | 0.06 | 0.01 | |||||||||||||||||||
| Residential real estate | 0.00 | (0.00) | (0.00) | (0.00) | |||||||||||||||||||
| Consumer home equity | 0.00 | (0.00) | (0.00) | (0.00) | |||||||||||||||||||
| Other consumer | 0.29 | 0.13 | 0.48 | 0.30 | |||||||||||||||||||
| Total net charge-offs (recoveries) to average loans outstanding during the period: | 0.04 | % | 0.00 | % | 0.08 | % | 0.06 | % | |||||||||||||||
| Total loans | $ | 23,281,401 | $ | 18,315,123 | $ | 23,281,401 | $ | 18,315,123 | |||||||||||||||
| Total non-accrual loans | $ | 109,381 | $ | 54,712 | $ | 109,381 | $ | 54,712 | |||||||||||||||
| Allowance for loan losses | $ | 325,354 | $ | 232,113 | $ | 325,354 | $ | 232,113 | |||||||||||||||
| Allowance for loan losses as a percent of total loans | 1.40 | % | 1.27 | % | 1.40 | % | 1.27 | % | |||||||||||||||
| Non-accrual loans as a percent of total loans | 0.47 | % | 0.30 | % | 0.47 | % | 0.30 | % | |||||||||||||||
| Allowance for loan losses as a percent of non-accrual loans | 297.45 | % | 424.25 | % | 297.45 | % | 424.25 | % | |||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||||||||||||||||||||||||||
| Allowance for Loan Losses | Percent of Allowance in Category to Total Allocated Allowance | Percent of Loans in Category to Total Loans | Allowance for Loan Losses | Percent of Allowance in Category to Total Allocated Allowance | Percent of Loans in Category to Total Loans | ||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||
| Commercial and industrial | $ | 63,209 | 19.43 | % | 20.07 | % | $ | 65,768 | 19.82 | % | 18.34 | % | |||||||||||||||||||||||
| Commercial real estate | 172,339 | 52.97 | % | 39.95 | % | 164,376 | 49.53 | % | 40.42 | % | |||||||||||||||||||||||||
| Commercial construction | 12,251 | 3.77 | % | 2.33 | % | 21,058 | 6.35 | % | 2.41 | % | |||||||||||||||||||||||||
| Business banking | 23,171 | 7.12 | % | 6.67 | % | 22,921 | 6.91 | % | 6.80 | % | |||||||||||||||||||||||||
| Residential real estate | 40,585 | 12.47 | % | 22.21 | % | 44,177 | 13.31 | % | 23.40 | % | |||||||||||||||||||||||||
| Consumer home equity | 10,320 | 3.17 | % | 7.83 | % | 9,171 | 2.76 | % | 7.46 | % | |||||||||||||||||||||||||
| Other consumer | 3,479 | 1.07 | % | 0.94 | % | 4,370 | 1.32 | % | 1.17 | % | |||||||||||||||||||||||||
| Total | $ | 325,354 | 100.00 | % | 100.00 | % | $ | 331,841 | 100.00 | % | 100.00 | % | |||||||||||||||||||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| (In thousands) | |||||||||||
| Balances not subject to amortization | |||||||||||
| Goodwill | $ | 1,117,148 | $ | 1,117,148 | |||||||
| Balances subject to amortization | |||||||||||
| Core deposit intangibles | 142,863 | 164,280 | |||||||||
| Customer list intangible | 16,966 | 18,711 | |||||||||
| Trade name intangible | 666 | 791 | |||||||||
| Total balances subject to amortization | 160,495 | 183,782 | |||||||||
| Total goodwill and other intangible assets | $ | 1,277,643 | $ | 1,300,930 | |||||||
| Change | |||||||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | Amount ($) | Percentage (%) | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Demand | $ | 6,540,568 | $ | 6,341,205 | $ | 199,363 | 3.1 | % | |||||||||||||||
| Interest checking | 4,706,543 | 4,727,219 | (20,676) | (0.4) | % | ||||||||||||||||||
| Savings | 2,151,300 | 2,010,028 | 141,272 | 7.0 | % | ||||||||||||||||||
| Money market investments | 8,207,130 | 7,885,707 | 321,423 | 4.1 | % | ||||||||||||||||||
| Certificate of deposits | 4,313,771 | 4,506,592 | (192,821) | (4.3) | % | ||||||||||||||||||
| Total deposits | $ | 25,919,312 | $ | 25,470,751 | $ | 448,561 | 1.8 | % | |||||||||||||||
| For the Six Months Ended June 30, 2026 | For the Year Ended December 31, 2025 | ||||||||||||||||||||||
| Average Amount | Average Rate | Average Amount | Average Rate | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Demand | $ | 6,382,893 | — | % | $ | 5,803,876 | — | % | |||||||||||||||
| Interest checking | 4,673,276 | 0.85 | % | 4,482,914 | 0.94 | % | |||||||||||||||||
| Savings | 2,090,384 | 0.37 | % | 1,683,451 | 0.30 | % | |||||||||||||||||
| Money market investments | 7,950,445 | 2.20 | % | 6,309,936 | 2.35 | % | |||||||||||||||||
| Certificate of deposits | 4,231,066 | 3.50 | % | 3,487,640 | 3.93 | % | |||||||||||||||||
| Total deposits | $ | 25,328,064 | 1.46 | % | $ | 21,767,817 | 1.53 | % | |||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | |||||||||||||
| Maturing in | (In thousands) | |||||||||||||
| Three months or less | $ | 885,184 | $ | 734,723 | ||||||||||
| Over three months through six months | 380,869 | 467,873 | ||||||||||||
| Over six months through 12 months | 66,284 | 202,541 | ||||||||||||
| Over 12 months | 15,089 | 8,465 | ||||||||||||
| Total | $ | 1,347,426 | $ | 1,413,602 | ||||||||||
| Change | |||||||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | Amount ($) | Percentage (%) | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Interest rate swap collateral funds | $ | 34,181 | $ | 15,321 | $ | 18,860 | 123.1 | % | |||||||||||||||
| FHLB advances | 364,412 | 199,617 | 164,795 | 82.6 | % | ||||||||||||||||||
| Total | $ | 398,593 | $ | 214,938 | $ | 183,655 | 85.4 | % | |||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||||||||||||||||||||||||||
| Change | Change | ||||||||||||||||||||||||||||||||||||||||||||||
| 2026 | 2025 | Amount ($) | Percentage | 2026 | 2025 | Amount ($) | Percentage | ||||||||||||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||||||||||||||
| Interest and dividend income | $ | 349,909 | $ | 279,339 | $ | 70,570 | 25.3 | % | $ | 689,455 | $ | 545,044 | $ | 144,411 | 26.5 | % | |||||||||||||||||||||||||||||||
| Interest expense | 97,977 | 77,309 | 20,668 | 26.7 | % | 192,867 | 154,115 | 38,752 | 25.1 | % | |||||||||||||||||||||||||||||||||||||
| Net interest income | 251,932 | 202,030 | 49,902 | 24.7 | % | 496,588 | 390,929 | 105,659 | 27.0 | % | |||||||||||||||||||||||||||||||||||||
| Provision for allowance for loan losses | 6,755 | 7,600 | (845) | (11.1) | % | 12,511 | 14,200 | (1,689) | (11.9) | % | |||||||||||||||||||||||||||||||||||||
| Noninterest income (loss) | 57,588 | 42,851 | 14,737 | 34.4 | % | 101,145 | (193,267) | 294,412 | 152.3 | % | |||||||||||||||||||||||||||||||||||||
| Noninterest expense | 167,948 | 136,961 | 30,987 | 22.6 | % | 366,578 | 267,081 | 99,497 | 37.3 | % | |||||||||||||||||||||||||||||||||||||
| Income tax expense | 29,604 | 87 | 29,517 | 33,927.6 | % | 48,169 | 33,814 | 14,355 | 42.5 | % | |||||||||||||||||||||||||||||||||||||
| Net income (loss) | 105,213 | 100,233 | 4,980 | 5.0 | % | 170,475 | (117,433) | 287,908 | (245.2) | % | |||||||||||||||||||||||||||||||||||||

| As of and for the three months ended June 30, | |||||||||||||||||||||||||||||||||||
| 2026 | 2025 | ||||||||||||||||||||||||||||||||||
| Average Outstanding Balance | Interest | Average Yield/Cost (5) | Average Outstanding Balance | Interest | Average Yield /Cost (5) | ||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||
| Interest-earning assets: | |||||||||||||||||||||||||||||||||||
Loans (1) | |||||||||||||||||||||||||||||||||||
| Commercial | $ | 15,856,199 | $ | 216,722 | 5.48 | % | $ | 12,533,447 | $ | 174,639 | 5.59 | % | |||||||||||||||||||||||
| Residential | 5,189,232 | 63,779 | 4.93 | % | 3,888,885 | 43,235 | 4.46 | % | |||||||||||||||||||||||||||
| Consumer | 2,011,440 | 32,973 | 6.58 | % | 1,654,324 | 27,542 | 6.68 | % | |||||||||||||||||||||||||||
| Total loans | 23,056,871 | 313,474 | 5.45 | % | 18,076,656 | 245,416 | 5.45 | % | |||||||||||||||||||||||||||
| Non-taxable investment securities | 486,926 | 5,848 | 4.82 | % | 234,708 | 2,256 | 3.86 | % | |||||||||||||||||||||||||||
| Taxable investment securities | 4,556,244 | 35,035 | 3.08 | % | 4,597,007 | 34,113 | 2.98 | % | |||||||||||||||||||||||||||
| Other short-term investments | 200,359 | 1,774 | 3.55 | % | 228,803 | 2,359 | 4.14 | % | |||||||||||||||||||||||||||
| Total interest-earning assets | $ | 28,300,400 | $ | 356,131 | 5.05 | % | $ | 23,137,174 | $ | 284,144 | 4.93 | % | |||||||||||||||||||||||
| Non-interest-earning assets | 2,531,564 | 1,921,592 | |||||||||||||||||||||||||||||||||
| Total assets | $ | 30,831,964 | $ | 25,058,766 | |||||||||||||||||||||||||||||||
| Interest-bearing liabilities: | |||||||||||||||||||||||||||||||||||
| Deposits: | |||||||||||||||||||||||||||||||||||
| Savings account | $ | 2,123,940 | $ | 2,066 | 0.39 | % | $ | 1,632,098 | $ | 1,212 | 0.30 | % | |||||||||||||||||||||||
| Interest checking account | 4,677,313 | 9,987 | 0.86 | % | 4,410,100 | 10,169 | 0.92 | % | |||||||||||||||||||||||||||
| Money market investment | 8,039,037 | 44,835 | 2.24 | % | 5,893,593 | 33,651 | 2.29 | % | |||||||||||||||||||||||||||
| Time account | 4,184,757 | 36,151 | 3.46 | % | 3,228,372 | 31,674 | 3.94 | % | |||||||||||||||||||||||||||
| Total interest-bearing deposits | 19,025,047 | 93,039 | 1.96 | % | 15,164,163 | 76,706 | 2.03 | % | |||||||||||||||||||||||||||
| Borrowings | 534,791 | 4,938 | 3.70 | % | 65,821 | 603 | 3.67 | % | |||||||||||||||||||||||||||
| Total interest-bearing liabilities | $ | 19,559,838 | $ | 97,977 | 2.01 | % | $ | 15,229,984 | $ | 77,309 | 2.04 | % | |||||||||||||||||||||||
| Demand accounts | 6,435,385 | 5,662,108 | |||||||||||||||||||||||||||||||||
| Other noninterest-bearing liabilities | 543,379 | 543,505 | |||||||||||||||||||||||||||||||||
| Total liabilities | 26,538,602 | 21,435,597 | |||||||||||||||||||||||||||||||||
| Shareholders’ equity | 4,293,362 | 3,623,169 | |||||||||||||||||||||||||||||||||
| Total liabilities and shareholders’ equity | $ | 30,831,964 | $ | 25,058,766 | |||||||||||||||||||||||||||||||
Net interest income – FTE | $ | 258,154 | $ | 206,835 | |||||||||||||||||||||||||||||||
Net interest rate spread (2) | 3.04 | % | 2.89 | % | |||||||||||||||||||||||||||||||
Net interest-earning assets (3) | $ | 8,740,562 | $ | 7,907,190 | |||||||||||||||||||||||||||||||
Net interest margin – FTE (4) | 3.66 | % | 3.59 | % | |||||||||||||||||||||||||||||||
| Average interest-earning assets to interest-bearing liabilities | 144.69 | % | 151.92 | % | |||||||||||||||||||||||||||||||
Return on average assets (5)(6) | 1.37 | % | 1.60 | % | |||||||||||||||||||||||||||||||
Return on average equity (5)(7) | 9.83 | % | 11.10 | % | |||||||||||||||||||||||||||||||
| Noninterest expense to average assets | 2.18 | % | 2.19 | % | |||||||||||||||||||||||||||||||
| As of and for the six months ended June 30, | |||||||||||||||||||||||||||||||||||
| 2026 | 2025 | ||||||||||||||||||||||||||||||||||
| Average Outstanding Balance | Interest | Average Yield /Cost (5) | Average Outstanding Balance | Interest | Average Yield/Cost (5) | ||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||
| Interest-earning assets: | |||||||||||||||||||||||||||||||||||
Loans (1) | |||||||||||||||||||||||||||||||||||
| Commercial | $ | 15,851,215 | $ | 430,931 | 5.48 | % | $ | 12,419,830 | $ | 338,476 | 5.50 | % | |||||||||||||||||||||||
| Residential | 5,208,445 | 124,481 | 4.82 | % | 3,901,270 | 85,904 | 4.44 | % | |||||||||||||||||||||||||||
| Consumer | 1,996,126 | 64,967 | 6.56 | % | 1,635,456 | 53,716 | 6.62 | % | |||||||||||||||||||||||||||
| Total loans | 23,055,786 | 620,379 | 5.43 | % | 17,956,556 | 478,096 | 5.37 | % | |||||||||||||||||||||||||||
| Non-taxable investment securities | 440,305 | 10,445 | 4.78 | % | 216,302 | 4,092 | 3.81 | % | |||||||||||||||||||||||||||
| Taxable investment securities | 4,495,295 | 68,238 | 3.06 | % | 4,682,692 | 65,273 | 2.81 | % | |||||||||||||||||||||||||||
| Other short-term investments | 163,390 | 2,784 | 3.44 | % | 333,038 | 6,995 | 4.24 | % | |||||||||||||||||||||||||||
| Total interest-earning assets | $ | 28,154,776 | $ | 701,846 | 5.03 | % | $ | 23,188,588 | $ | 554,456 | 4.82 | % | |||||||||||||||||||||||
| Non-interest-earning assets | 2,568,390 | 1,874,913 | |||||||||||||||||||||||||||||||||
| Total assets | $ | 30,723,166 | $ | 25,063,501 | |||||||||||||||||||||||||||||||
| Interest-bearing liabilities: | |||||||||||||||||||||||||||||||||||
| Deposits: | |||||||||||||||||||||||||||||||||||
| Savings account | $ | 2,090,384 | $ | 3,852 | 0.37 | % | $ | 1,640,121 | $ | 2,403 | 0.30 | % | |||||||||||||||||||||||
| Interest checking account | 4,673,276 | 19,640 | 0.85 | % | 4,451,261 | 20,219 | 0.92 | % | |||||||||||||||||||||||||||
| Money market investment | 7,950,445 | 86,554 | 2.20 | % | 5,814,024 | 65,358 | 2.27 | % | |||||||||||||||||||||||||||
| Time account | 4,231,066 | 73,428 | 3.50 | % | 3,219,873 | 64,724 | 4.05 | % | |||||||||||||||||||||||||||
| Total interest-bearing deposits | 18,945,171 | 183,474 | 1.95 | % | 15,125,279 | 152,704 | 2.04 | % | |||||||||||||||||||||||||||
| Borrowings | 511,282 | 9,393 | 3.70 | % | 75,745 | 1,411 | 3.76 | % | |||||||||||||||||||||||||||
| Total interest-bearing liabilities | $ | 19,456,453 | $ | 192,867 | 2.00 | % | $ | 15,201,024 | $ | 154,115 | 2.04 | % | |||||||||||||||||||||||
| Demand accounts | 6,382,893 | 5,701,899 | |||||||||||||||||||||||||||||||||
| Other noninterest-bearing liabilities | 556,563 | 557,237 | |||||||||||||||||||||||||||||||||
| Total liabilities | 26,395,909 | 21,460,160 | |||||||||||||||||||||||||||||||||
| Shareholders’ equity | 4,327,257 | 3,603,341 | |||||||||||||||||||||||||||||||||
| Total liabilities and shareholders’ equity | $ | 30,723,166 | $ | 25,063,501 | |||||||||||||||||||||||||||||||
Net interest income – FTE | $ | 508,979 | $ | 400,341 | |||||||||||||||||||||||||||||||
Net interest rate spread (2) | 3.03 | % | 2.78 | % | |||||||||||||||||||||||||||||||
Net interest-earning assets (3) | $ | 8,698,323 | $ | 7,987,564 | |||||||||||||||||||||||||||||||
Net interest margin – FTE (4) | 3.65 | % | 3.48 | % | |||||||||||||||||||||||||||||||
| Average interest-earning assets to interest-bearing liabilities | 144.71 | % | 152.55 | % | |||||||||||||||||||||||||||||||
Return (loss) on average assets (5)(6) | 1.12 | % | (0.94) | % | |||||||||||||||||||||||||||||||
Return (loss) on average equity (5)(7) | 7.94 | % | (6.57) | % | |||||||||||||||||||||||||||||||
| Noninterest expense to average assets | 2.41 | % | 2.15 | % | |||||||||||||||||||||||||||||||

| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||||||||||||||||||||||||||
| Change | Change | ||||||||||||||||||||||||||||||||||||||||||||||
| 2026 | 2025 | Amount | % | 2026 | 2025 | Amount | % | ||||||||||||||||||||||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||||||||||||||||||||||||||
| Investment advisory fees | $ | 19,693 | $ | 17,282 | $ | 2,411 | 14.0 | % | $ | 38,007 | $ | 33,719 | $ | 4,288 | 12.7 | % | |||||||||||||||||||||||||||||||
| Service charges on deposit accounts | 10,044 | 8,244 | 1,800 | 21.8 | % | 19,971 | 16,559 | 3,412 | 20.6 | % | |||||||||||||||||||||||||||||||||||||
| Card income | 6,038 | 4,230 | 1,808 | 42.7 | % | 11,835 | 8,150 | 3,685 | 45.2 | % | |||||||||||||||||||||||||||||||||||||
| Interest rate swap income | 1,996 | 978 | 1,018 | 104.1 | % | 2,979 | 1,466 | 1,513 | 103.2 | % | |||||||||||||||||||||||||||||||||||||
| Income from investments for employee retirement benefits | 6,958 | 5,727 | 1,231 | 21.5 | % | 5,098 | 4,470 | 628 | 14.0 | % | |||||||||||||||||||||||||||||||||||||
| Mortgage banking income (loss) | 3,343 | (95) | 3,438 | (3,618.9) | % | 6,208 | (187) | 6,395 | (3,419.8) | % | |||||||||||||||||||||||||||||||||||||
| Losses on sales of securities available for sale, net | — | — | — | — | % | — | (269,638) | 269,638 | (100.0) | % | |||||||||||||||||||||||||||||||||||||
| Miscellaneous income and fees | 9,784 | 5,867 | 3,917 | 66.8 | % | 18,819 | 12,206 | 6,613 | 54.2 | % | |||||||||||||||||||||||||||||||||||||
| Other non-operating (loss) income | (268) | 618 | (886) | (143.4) | % | (1,772) | (12) | (1,760) | 14,666.7 | % | |||||||||||||||||||||||||||||||||||||
| Total noninterest income (loss) | $ | 57,588 | $ | 42,851 | $ | 14,737 | 34.4 | % | $ | 101,145 | $ | (193,267) | $ | 294,412 | (152.3) | % | |||||||||||||||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||||||||||||||||||||||||||
| Change | Change | ||||||||||||||||||||||||||||||||||||||||||||||
| 2026 | 2025 | Amount | % | 2026 | 2025 | Amount | % | ||||||||||||||||||||||||||||||||||||||||
| (Dollars in thousands) | (Dollars in thousands) | ||||||||||||||||||||||||||||||||||||||||||||||
| Salaries and employee benefits | $ | 97,030 | $ | 80,696 | $ | 16,334 | 20.2 | % | $ | 199,181 | $ | 160,555 | $ | 38,626 | 24.1 | % | |||||||||||||||||||||||||||||||
| Occupancy and equipment | 13,246 | 11,230 | 2,016 | 18.0 | % | 27,357 | 21,847 | 5,510 | 25.2 | % | |||||||||||||||||||||||||||||||||||||
| Technology and data processing | 23,740 | 18,395 | 5,345 | 29.1 | % | 47,583 | 36,410 | 11,173 | 30.7 | % | |||||||||||||||||||||||||||||||||||||
| Professional services | 5,681 | 3,037 | 2,644 | 87.1 | % | 9,095 | 5,961 | 3,134 | 52.6 | % | |||||||||||||||||||||||||||||||||||||
| Marketing expenses | 3,098 | 2,432 | 666 | 27.4 | % | 5,794 | 4,164 | 1,630 | 39.1 | % | |||||||||||||||||||||||||||||||||||||
| FDIC insurance | 3,747 | 3,780 | (33) | (0.9) | % | 7,115 | 7,068 | 47 | 0.7 | % | |||||||||||||||||||||||||||||||||||||
| Amortization of intangible assets | 11,643 | 7,807 | 3,836 | 49.1 | % | 23,287 | 15,615 | 7,672 | 49.1 | % | |||||||||||||||||||||||||||||||||||||
| Other operating expenses | 8,213 | 7,002 | 1,211 | 17.3 | % | 14,849 | 12,879 | 1,970 | 15.3 | % | |||||||||||||||||||||||||||||||||||||
| Non-operating expenses | 1,550 | 2,582 | (1,032) | (40.0) | % | 32,317 | 2,582 | 29,735 | 1,151.6 | % | |||||||||||||||||||||||||||||||||||||
| Total noninterest expense | $ | 167,948 | $ | 136,961 | $ | 30,987 | 22.6 | % | $ | 366,578 | $ | 267,081 | $ | 99,497 | 37.3 | % | |||||||||||||||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (Dollars in thousands) | |||||||||||||||||||||||
| Combined federal and state income tax provision | $ | 29,604 | $ | 87 | $ | 48,169 | $ | 33,814 | |||||||||||||||
| Effective income tax rate | 22.0 | % | 0.1 | % | 22.0 | % | (40.4) | % | |||||||||||||||
| Blended statutory tax rate | 27.6 | % | 27.7 | % | 27.6 | % | 27.7 | % | |||||||||||||||
| As of June 30, 2026 | ||||||||||||||
Change in Interest Rates (basis points) (1) | Year 1 Change from Level | Policy Limit | ||||||||||||
| 400 | 2.8 | % | (20.0) | % | ||||||||||
| 200 | 1.6 | % | (12.0) | % | ||||||||||
| 100 | 0.8 | % | (10.0) | % | ||||||||||
| Flat | — | % | — | % | ||||||||||
| (100) | (1.0) | % | (10.0) | % | ||||||||||
| (200) | (1.8) | % | (12.0) | % | ||||||||||
| (400) | 2.0 | % | (20.0) | % | ||||||||||
| As of December 31, 2025 | ||||||||||||||
Change in Interest Rates (basis points) (1) | Year 1 Change from Level | Policy Limit | ||||||||||||
| 400 | (1.7) | % | (20.0) | % | ||||||||||
| 200 | (0.6) | % | (12.0) | % | ||||||||||
| 100 | (0.2) | % | (10.0) | % | ||||||||||
| Flat | — | % | — | % | ||||||||||
| (100) | (0.1) | % | (10.0) | % | ||||||||||
| (200) | 0.0 | % | (12.0) | % | ||||||||||
| (400) | 1.4 | % | (20.0) | % | ||||||||||
Change in Interest Rates (basis points) (1) | As of June 30, 2026 | ||||||||||||||||
Estimated Increase (Decrease) in EVE from Level (2) | EVE as a Percentage of Total Assets (3) | ||||||||||||||||
| Percent | Policy Limit | ||||||||||||||||
| 400 | (3.7) | % | (40.0) | % | 22.49 | % | |||||||||||
| 200 | (1.4) | % | (20.0) | % | 22.13 | % | |||||||||||
| 100 | (0.4) | % | N/A | 21.86 | % | ||||||||||||
| Flat | — | — | % | 21.48 | % | ||||||||||||
| (100) | (0.7) | % | N/A | 20.87 | % | ||||||||||||
| (200) | (3.5) | % | (20.0) | % | 19.91 | % | |||||||||||
| (400) | (15.7) | % | (40.0) | % | 16.73 | % | |||||||||||
Change in Interest Rates (basis points) (1) | As of December 31, 2025 | ||||||||||||||||
Estimated Increase (Decrease) in EVE from Level (2) | EVE as a Percentage of Total Assets (3) | ||||||||||||||||
| Percent | Policy Limit | ||||||||||||||||
| 400 | (3.0) | % | (30.0) | % | 22.17 | % | |||||||||||
| 200 | (0.6) | % | (20.0) | % | 21.81 | % | |||||||||||
| 100 | (0.3) | % | N/A | 21.43 | % | ||||||||||||
| Flat | — | — | % | 21.02 | % | ||||||||||||
| (100) | (0.9) | % | N/A | 20.38 | % | ||||||||||||
| (200) | (3.4) | % | (20.0) | % | 19.46 | % | |||||||||||
| (400) | (15.1) | % | (30.0) | % | 16.45 | % | |||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||||||||||||||
| Outstanding | Additional Capacity | Outstanding | Additional Capacity | ||||||||||||||||||||
| (In thousands) | |||||||||||||||||||||||
Brokered deposits (1) | $ | 113,025 | $ | — | $ | 84,703 | $ | — | |||||||||||||||
| Reciprocal deposits | 2,297,168 | — | 2,267,539 | — | |||||||||||||||||||
Federal Home Loan Bank (2) | 363,349 | 5,157,042 | 198,058 | 3,049,296 | |||||||||||||||||||
Federal Reserve Bank of Boston- Discount Window (3) | — | 4,095,483 | — | 3,902,128 | |||||||||||||||||||
| Total | $ | 2,773,542 | $ | 9,252,525 | $ | 2,550,300 | $ | 6,951,424 | |||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||
| Capital Ratios: | |||||||||||
Average equity to average assets (1) | 13.93 | % | 14.43 | % | |||||||
| Total regulatory capital (to risk-weighted assets) | 14.00 | % | 14.32 | % | |||||||
| Common equity Tier 1 capital (to risk-weighted assets) | 13.00 | % | 13.19 | % | |||||||
| Tier 1 capital (to risk-weighted assets) | 13.00 | % | 13.19 | % | |||||||
| Tier 1 capital (to average assets) leverage | 10.94 | % | 11.65 | % | |||||||
| Period | Total Number of Shares | Average Price Paid per Share | Total Number of Shares Purchased as Part of the Publicly Announced Share Repurchase Programs | Maximum Number of Shares That May Yet Be Purchased Under the Share Repurchase Programs (1) | |||||||||||||||||||
| January 1, 2026 – January 31, 2026 | 926,218 | $ | 19.62 | 4,039,419 | 7,860,581 | ||||||||||||||||||
| February 1, 2026 – February 28, 2026 | 395,502 | 20.42 | 4,434,921 | 7,465,079 | |||||||||||||||||||
| March 1, 2026 – March 31, 2026 | 2,561,746 | 19.06 | 6,996,667 | 4,903,333 | |||||||||||||||||||
| April 1, 2026 – April 30, 2026 | 1,284,974 | 20.19 | 8,281,641 | 3,618,359 | |||||||||||||||||||
| May 1, 2026 – May 31, 2026 | 1,166,739 | 19.69 | 9,448,380 | 2,451,620 | |||||||||||||||||||
| June 1, 2026 – June 30, 2026 | 1,177,441 | 20.22 | 10,625,821 | 1,274,179 | |||||||||||||||||||
| Total | 7,512,620 | $ | 19.67 | ||||||||||||||||||||
Exhibit No. | Description | |||||||
| 31.1* | ||||||||
| 31.2* | ||||||||
| 32.1+ | ||||||||
| 32.2+ | ||||||||
| 101* | Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Unaudited Consolidated Balance Sheets as of June 30, 2026 and December 31, 2025, (ii) the Unaudited Consolidated Statements of Income for the three and six months ended June 30, 2026 and 2025 (iii) the Unaudited Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2026 and 2025, (iv) the Unaudited Consolidated Statements of Changes in Equity for the three and six months ended June 30, 2026 and 2025, (v) the Unaudited Consolidated Statements of Cash Flows for the six months ended June 30, 2026 and 2025, and (vi) the Notes to the Unaudited Consolidated Financial Statements. | |||||||
| 104 | Cover page interactive data file (formatted as inline XBRL with applicable taxonomy extension information) contained in Exhibit 101 to this report+ | |||||||
| EASTERN BANKSHARES, INC. | |||||||||||
| Date: August 7, 2026 | /s/ Robert F. Rivers | ||||||||||
| By: | Robert F. Rivers | ||||||||||
| Executive Chair and Chair of the Board | |||||||||||
| (Principal Executive Officer) | |||||||||||
| Date: August 7, 2026 | /s/ R. David Rosato | ||||||||||
| By: | R. David Rosato | ||||||||||
| Chief Financial Officer | |||||||||||
| (Principal Financial Officer) | |||||||||||
| Date: August 7, 2026 | |||||
| /s/ Robert F. Rivers | |||||
| Robert F. Rivers Executive Chair (Principal Executive Officer) | |||||
| Date: August 7, 2026 | |||||
| /s/ R. David Rosato | |||||
| R. David Rosato Chief Financial Officer (Principal Financial Officer) | |||||
| Date: August 7, 2026 | |||||
| Eastern Bankshares, Inc. | |||||
| (“Company”) | |||||
| /s/ Robert F. Rivers | |||||
| Robert F. Rivers Executive Chair (Principal Executive Officer) | |||||
| Date: August 7, 2026 | |||||
| Eastern Bankshares, Inc. | |||||
| (“Company”) | |||||
| /s/ R. David Rosato | |||||
| R. David Rosato Chief Financial Officer (Principal Financial Officer) | |||||