10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2026

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______________ to __________________.

Commission File No. 0-13660

Seacoast Banking Corporation of Florida

(Exact Name of Registrant as Specified in its Charter)

Florida	59-2260678
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

815 Colorado Avenue,	Stuart	FL	34994
(Address of Principal Executive Offices)			(Zip Code)

	(772)	287-4000
(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.10 Par Value	SBCF	Nasdaq Global Select Market

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.                        Yes ☒ No☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).                                Yes ☒ No☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     Yes ☐ No ☒

Common Stock, $0.10 Par Value – 96,482,082 shares outstanding as of October 15, 2026

INDEX

 SEACOAST BANKING CORPORATION OF FLORIDA

	Glossary of Defined Terms	3
Part I	FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)
	Consolidated statements of income – Three and nine months ended September 30, 2026 and 2025	5
	Consolidated statements of comprehensive income (loss) – Three and nine months ended September 30, 2026 and 2025	7
	Consolidated balance sheets - September 30, 2026 and December 31, 2025	8
	Consolidated statements of cash flows – Nine months ended September 30, 2026 and 2025	9
	Consolidated statements of shareholders’ equity - Three and nine months ended September 30, 2026 and 2025	11
	Notes to Consolidated Financial Statements	13
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	40
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	60
Item 4.	Controls and Procedures	61
Part II	OTHER INFORMATION
Item 1.	Legal Proceedings	61
Item 1A.	Risk Factors	61
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	63
Item 3.	Defaults upon Senior Securities	63
Item 4.	Mine Safety Disclosures	63
Item 5.	Other Information	63
Item 6.	Exhibits	63
SIGNATURES		66

2

Glossary of Defined Terms
Term	Definition	Term	Definition
ACL	Allowance for credit losses	GAAP	Accounting principles generally accepted in the United States of America
AFS	Available-for-sale	Heartland	Heartland Bancshares, Inc.
ALCO	Asset and Liability Management Committee	HELOC	Home equity line of credit
AOCI	Accumulated other comprehensive income (loss)	HTM	Held-to-maturity
ARM	Adjustable-rate mortgage	IRLC	Interest Rate Lock Commitment
ASC	Accounting Standards Codification	LTV	Loan-to-value
ASU	Accounting Standards Update	Moody's	Moody's Analytics
BHC	Bank Holding Company	MSR	Mortgage servicing rights
BOLI	Bank owned life insurance	NAV	Net Asset Value
CDI	Core deposit intangibles	NPA	Nonperforming asset
CEO	Chief Executive Officer	OCC	Office of the Comptroller of the Currency
CET1	Common equity tier 1	OREO	Other real estate owned
CLO	Collateralized loan obligation	ROA	Return on average assets
CODM	Chief operating decision maker	ROE	Return on average equity
CRA	Community Reinvestment Act	ROTE	Return on average tangible equity
CRE	Commercial Real Estate	PCD	Purchased credit deteriorated
DTA	Deferred tax asset	REIT	Real estate investment trust
EPS	Earnings per share	ROUA	Right-of-use asset
ESG	Environmental, social and governance	SBIC	Small business investment companies
EVE	Economic value of equity	SEC	Securities and Exchange Commission
FASB	Financial Accounting Standards Board	SOFR	Secured Overnight Financing Rate
FDIC	Federal Deposit Insurance Corporation	TBA	To-Be-Announced
FHLB	Federal Home Loan Bank	TBM	Troubled borrower modification
FICO	Fair Isaac Corporation (credit score)	VBI	Villages Bancorporation, Inc.
FRB	Federal Reserve Board	XBRL	eXtensible Business Reporting Language
FTE	Fully taxable equivalent

3

Part I. FINANCIAL INFORMATION

Item 1. Financial Statements

4

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Interest and fees on loans	$	197,314	$	161,913	$	571,206	$	469,628
Interest and dividends on securities	61,729		36,019		184,394		97,946
Interest on interest-bearing deposits and other investments	3,603		4,780		13,303		12,740
Total Interest Income	262,646		202,712		768,903		580,314
Interest on deposits	45,495		43,133		134,282		127,392
Interest on time certificates	21,650		16,341		57,896		46,434
Interest on borrowed money	12,146		9,770		36,505		27,639
Total Interest Expense	79,291		69,244		228,683		201,465
Net Interest Income	183,355		133,468		540,220		378,849
Provision for credit losses	6,297		8,371		16,055		22,000
Net Interest Income after Provision for Credit Losses	177,058		125,097		524,165		356,849
Noninterest income:
Service charges on deposit accounts	7,088		6,194		21,045		16,914
Wealth management income	6,094		4,578		17,839		13,022
Mortgage banking income	4,739		517		9,649		1,606
Interchange income	2,258		2,008		6,418		5,710
Insurance agency income	1,847		1,481		4,973		4,390
BOLI income	2,647		3,875		7,873		9,723
Other	7,468		6,006		19,095		19,760
Total Noninterest Income Before Securities (Losses) Gains, Net	32,141		24,659		86,892		71,125
Securities losses, net	(539)		(841)		(40,126)		(606)
Total Noninterest Income	31,602		23,818		46,766		70,519
Noninterest expense:
Salaries and employee benefits	63,441		53,697		189,201		157,350
Outsourced data processing costs	12,465		9,337		36,702		26,366
Occupancy	9,385		7,627		28,211		22,460
Furniture and equipment	3,150		2,233		8,774		6,486
Marketing	3,515		2,509		10,507		8,215
Legal and professional fees	2,726		1,674		8,376		6,485
FDIC assessments	3,126		2,414		9,080		6,716
Amortization of intangibles	9,934		6,005		29,992		16,445
OREO expense and net loss (gain) on sale	497		(346)		645		(97)
Provision for credit losses on unfunded commitments	150		150		450		450
Merger and integration costs	15,506		10,808		32,400		14,281
Other	9,430		5,879		24,268		19,157
Total Noninterest Expense	133,325		101,987		378,606		284,314
Income Before Income Taxes	75,335		46,928		192,325		143,054
Provision for income tax expense	15,467		10,461		41,027		32,436
Net Income	59,868		36,467		151,298		110,618
Preferred dividends	2,138		—		6,414		—
Net income available to common shareholders	$	57,730	$	36,467	$	144,884	$	110,618

5

Net income per share of common stock
Diluted	$	0.55	$	0.42	$	1.39	$	1.28
Basic	0.56		0.42		1.40		1.30
Average common shares outstanding
Diluted	97,237		87,425		97,487		86,154
Basic	96,269		86,619		96,514		85,398

See notes to unaudited consolidated financial statements.

6

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited)

(In thousands)	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Net Income	$	59,868	$	36,467	$	151,298	$	110,618
Other comprehensive (loss) income:
Unrealized (losses) gains on AFS securities, net of tax benefit of $56.9 million and $69.0 million, respectively, for the three and nine months ended September 30, 2026 and net of tax expense of $8.4 million and $20.9 million, respectively, for the three and nine months ended September 30, 2025	(180,038)		26,184		(217,410)		65,738
Amortization of unrealized gains on securities transferred to HTM, net of nominal tax benefit in each period for the three and nine months ended September 30, 2026 and 2025	(11)		(11)		(32)		(32)
Reclassification adjustment for losses included in net income, net of tax benefit of $3 thousand and $10.0 million, respectively, for the three and nine months ended September 30, 2026, and net of tax benefit of $0.2 million for each of the three and nine months ended September 30, 2025	6		711		29,457		711
Unrealized gains on derivatives designated as fair value hedges, net of reclassifications to income, net of nominal tax expense for the nine months ended September 30, 2025	—		—		—		27
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications to income, net of tax expense of $1.3 million and $1.7 million, respectively, for the three and nine months ended September 30, 2026	3,946		—		5,013		—
Total other comprehensive (loss) income	$	(176,097)	$	26,884	$	(182,972)	$	66,444
Comprehensive (Loss) Income	$	(116,229)	$	63,351	$	(31,674)	$	177,062

See notes to unaudited consolidated financial statements.

7

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Unaudited)

	September 30, 2026		December 31, 2025
(In thousands, except share data)
Assets
Cash and due from banks	$	188,512	$	181,429
Interest-bearing deposits with other banks	114,733		207,116
Total cash and cash equivalents	303,245		388,545
Time deposits with other banks	498		14,424
Debt securities:
Securities AFS (at fair value)	4,634,355		5,164,567
Securities HTM (fair value $435.3 million at September 30, 2026 and $489.6 million at December 31, 2025)	552,982		586,178
Total debt securities	5,187,337		5,750,745
Loans held for sale	14,462		16,297
Loans	13,574,211		12,627,984
ACL	(191,355)		(178,803)
Loans, net of ACL	13,382,856		12,449,181
Bank premises and equipment, net	159,202		160,139
Goodwill	1,045,014		1,034,735
Other intangible assets, net	170,202		195,704
BOLI	338,431		330,563
Net DTAs	123,056		66,579
Other assets	469,063		435,419
Total Assets	$	21,193,366	$	20,842,331
Liabilities
Deposits	$	16,580,159	$	16,256,343
Securities sold under agreements to repurchase	316,766		389,003
FHLB and other borrowings	985,000		835,000
Long-term debt, net	112,985		112,761
Other liabilities	259,583		193,437
Total Liabilities	18,254,493		17,786,544
Convertible preferred stock, par value $0.10 per share, authorized 4,000,000 shares, issued 11,250 and outstanding 11,250 shares at September 30, 2026 and December 31, 2025	343,125		343,125
Shareholders’ Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 98,882,451 and outstanding 96,734,422 at September 30, 2026, and authorized 120,000,000, issued 98,728,878 and outstanding 97,927,843 shares at December 31, 2025	9,888		9,873
Additional paid-in capital	2,216,867		2,197,549
Retained earnings	692,658		603,793
Treasury stock	(63,498)		(21,358)
Total Shareholders' Equity Before Accumulated Other Comprehensive Loss, Net	2,855,915		2,789,857
Accumulated other comprehensive loss, net	(260,167)		(77,195)
Total Shareholders’ Equity	2,595,748		2,712,662
Total Liabilities, Convertible Preferred Stock and Shareholders’ Equity	$	21,193,366	$	20,842,331

See notes to unaudited consolidated financial statements.

8

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Nine Months Ended September 30,
(In thousands)	2026		2025
Cash Flows from Operating Activities
Net income	$	151,298	$	110,618
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	8,723		6,715
Accretion of discounts on securities, net	(14,018)		(3,858)
Amortization of operating lease ROUAs	7,805		6,793
Other amortization and accretion, net	13,535		2,224
Stock-based compensation	16,209		11,445
Origination of loans designated for sale	(191,183)		(75,987)
Sale of loans designated for sale	199,577		86,383
Provision for credit losses	16,055		22,000
Deferred income taxes	3,038		7,174
Losses on securities	40,126		606
Gains on sale of loans	(6,282)		(4,067)
Losses (gains) on sale and write-downs of bank premises, equipment and OREO	272		(8)
Changes in operating assets and liabilities:
Net increase in other assets	(36,987)		(37,432)
Net increase in other liabilities	63,994		942
Net cash provided by operating activities	$	272,162	$	133,548
Cash Flows from Investing Activities
Maturities and repayments of debt securities AFS	494,954		369,197
Maturities and repayments of debt securities HTM	33,072		36,460
Proceeds from sale of debt securities AFS	511,140		265,524
Purchases of debt securities AFS	(748,160)		(1,171,727)
Maturities and redemptions of time deposits with other banks	13,926		2,219
Net new loans and principal repayments	(961,369)		(528,685)
Proceeds from the sale of loans held for investment	17,486		19,110
Proceeds from sale of OREO	989		2,960
Proceeds from sale of FHLB and Federal Reserve Bank stock	80,999		31,118
Purchase of FHLB and Federal Reserve Bank stock	(89,385)		(55,185)
Proceeds from BOLI death benefit	—		2,294
Net cash from acquisitions	(3,800)		185,995
Additions to bank premises and equipment	(7,637)		(7,149)
Net cash used in investing activities	$	(657,785)	$	(847,869)

9

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Nine Months Ended September 30,
(In thousands)	2026		2025
Cash Flows from Financing Activities
Net increase in deposits	$	323,816	$	142,697
Net (decrease) increase in repurchase agreements	(72,237)		4,176
Net increase of FHLB and other borrowings with original maturities of three months or less	225,000		100,000
Repayments of FHLB and other borrowings with original maturities of more than three months	(735,000)		(105,000)
Proceeds from FHLB and other borrowings with original maturities of more than three months	660,000		450,000
Stock-based employee benefit plans	493		(1,289)
Repurchase of common stock	(39,316)		—
Dividends paid	(62,433)		(46,876)
Net cash provided by financing activities	$	300,323	$	543,708
Net decrease in cash and cash equivalents	(85,300)		(170,613)
Cash and cash equivalents at beginning of period	388,545		476,607
Cash and cash equivalents at end of period	$	303,245	$	305,994
Supplemental disclosure of cash flow information:
Cash paid for interest	$	231,455	$	205,578
Cash paid for taxes, net	32,835		10,380
Recognition of operating lease ROUAs, other than through bank acquisitions, net of terminations	5,851		9,372
Recognition of operating lease liabilities, other than through bank acquisitions, net of terminations	5,905		9,372
Supplemental disclosure of non-cash investing activities:1
Transfers from loans to OREO	176		1,116
1See "Note 11 – Business Combinations" for non-cash transactions related to business combinations.

See notes to unaudited consolidated financial statements.

10

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS’ EQUITY (Unaudited)

				Shareholders' Equity
	Convertible Preferred Stock			Common Stock			Paid-in Capital		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss
(In thousands)	Shares	Amount		Shares	Amount										Total
Balance at June 30, 2026	11	$	343,125	96,823	$	9,878	$	2,208,511	$	653,623	$	(57,137)	$	(84,070)	$	2,730,805
Comprehensive income (loss)	—	—		—	—		—		59,868		—		(176,097)		(116,229)
Stock-based compensation expense	—	—		—	—		6,209		—		—		—		6,209
Common stock transactions related to stock-based employee benefit plans	—	—		104	10		2,147		—		(16)		—		2,141
Repurchase of common stock	—	—		(193)	—		—		—		(6,345)		—		(6,345)
Dividends on common stock ($0.19 per share)	—	—		—	—		—		(18,695)		—		—		(18,695)
Dividends on preferred stock ($0.19 per 1/1000th share)	—	—		—	—		—		(2,138)		—		—		(2,138)
Three months ended September 30, 2026	—	—		(89)	10		8,356		39,035		(6,361)		(176,097)		(135,057)
Balance at September 30, 2026	11	$	343,125	96,734	$	9,888	$	2,216,867	$	692,658	$	(63,498)	$	(260,167)	$	2,595,748

				Shareholders' Equity
	Convertible Preferred Stock			Common Stock			Paid-in Capital		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss
(In thousands)	Shares	Amount		Shares	Amount										Total
Balance at December 31, 2025	11	$	343,125	97,928	$	9,873	$	2,197,549	$	603,793	$	(21,358)	$	(77,195)	$	2,712,662
Comprehensive income (loss)	—	—		—	—		—		151,298		—		(182,972)		(31,674)
Stock-based compensation expense	—	—		—	—		16,209		—		—		—		16,209
Common stock transactions related to stock-based employee benefit plans	—	—		69	15		3,109		—		(2,631)		—		493
Repurchase of common stock	—	—		(1,263)	—		—		—		(39,509)		—		(39,509)
Dividends on common stock ($0.57 per share)	—	—		—	—		—		(56,019)		—		—		(56,019)
Dividends on preferred stock ($0.57 per 1/1000th share)	—	—		—	—		—		(6,414)		—		—		(6,414)
Nine months ended September 30, 2026	—	—		(1,194)	15		19,318		88,865		(42,140)		(182,972)		(116,914)
Balance at September 30, 2026	11	$	343,125	96,734	$	9,888	$	2,216,867	$	692,658	$	(63,498)	$	(260,167)	$	2,595,748

11

				Shareholders' Equity
	Convertible Preferred Stock			Common Stock			Paid-in Capital		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss
(In thousands)	Shares	Amount		Shares	Amount										Total
Balance at June 30, 2025	—	$	—	85,948	$	8,673	$	1,832,158	$	569,833	$	(20,792)	$	(118,307)	$	2,271,565
Comprehensive income	—	—		—	—		—		36,467		—		26,884		63,351
Stock-based compensation expense	—	—		—	—		4,448		—		—		—		4,448
Common stock transactions related to stock-based employee benefit plans	—	—		46	5		144		—		(12)		—		137
Issuance of common stock, pursuant to acquisition	—	—		1,862	186		54,361		—		—		—		54,547
Dividends on common stock ($0.18 per share)	—	—		—	—		—		(15,916)		—		—		(15,916)
Three months ended September 30, 2025	—	—		1,908	191		58,953		20,551		(12)		26,884		106,567
Balance at September 30, 2025	—	$	—	87,856	$	8,864	$	1,891,111	$	590,384	$	(20,804)	$	(91,423)	$	2,378,132

				Shareholders' Equity
	Convertible Preferred Stock			Common Stock			Paid-in Capital		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss
(In thousands)	Shares	Amount		Shares	Amount										Total
Balance at December 31, 2024	—	$	—	85,568	$	8,628	$	1,824,935	$	526,642	$	(19,095)	$	(157,867)	$	2,183,243
Comprehensive income	—	—		—	—		—		110,618		—		66,444		177,062
Stock-based compensation expense	—	—		—	—		11,445		—		—		—		11,445
Common stock transactions related to stock-based employee benefit plans	—	—		426	50		370		—		(1,709)		—		(1,289)
Issuance of common stock, pursuant to acquisition	—	—		1,862	186		54,361		—		—		—		54,547
Dividends on common stock ($0.54 per share)	—	—		—	—		—		(46,876)		—		—		(46,876)
Nine months ended September 30, 2025	—	—		2,288	236		66,176		63,742		(1,709)		66,444		194,889
Balance at September 30, 2025	—	$	—	87,856	$	8,864	$	1,891,111	$	590,384	$	(20,804)	$	(91,423)	$	2,378,132

See notes to unaudited consolidated financial statements.

12

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

Note 1 – Basis of Presentation

Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, the financial statements do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.

Operating results for the three and nine months ended September 30, 2026, are not necessarily indicative of the results that may be expected for the year ending December 31, 2026, or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the ACL, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements.

Issued Accounting Standards Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, Expense Disaggregation Disclosures. ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.

In November 2025, the FASB issued ASU 2025-08, Credit Losses (Topic 326): Purchased Loans. ASU 2025-08 requires that purchased seasoned loans be accounted for using the gross-up approach. The gross-up approach requires recognition of an ACL for the estimate of credit losses at the acquisition date. The ACL is recorded with an offsetting gross-up adjustment to the purchase price of the acquired financial asset. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods within those annual reporting periods. Early adoption is permitted. The Company is evaluating the date of adoption and the impact of the changes to its consolidated financial statements and existing disclosures.

In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements. ASU 2025-09 introduces five targeted improvements to better align hedge accounting with entities’ risk management activities. The standard is effective for fiscal years beginning after December 15, 2026, and for interim periods within those annual reporting periods. Early adoption is permitted. The Company is evaluating the impact of the changes to its consolidated financial statements and existing disclosures.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements. ASU 2025-11 clarifies interim disclosure requirements and provides a comprehensive list of interim disclosures that are required by GAAP. The ASU also includes a disclosure principle that requires entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. The standard is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its consolidated financial statements and existing disclosures.

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Note 2 – Earnings per Share

The Company computes EPS using the two-class method. The two-class method of computing EPS is an earnings allocation formula that determines EPS for common stock and any participating securities according to dividends declared and participation rights in undistributed earnings. The Company's Series A Non-Voting Convertible Preferred Stock is a participating security. Basic EPS is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during each period. Diluted EPS is based on the weighted-average number of common shares outstanding during each period, plus common share equivalents, calculated for share-based awards outstanding using the treasury stock method and preferred shares using the more dilutive of either the two-class or if-converted method.

For each of the three and nine month periods ended September 30, 2026, options to purchase 1,505 shares of the Company's common stock were anti-dilutive. Options to purchase shares of the Company’s common stock totaling 144,826 and 327,859, respectively, for the three and nine months ended September 30, 2025, were anti-dilutive.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Basic EPS
Net income	$	59,868	$	36,467	$	151,298	$	110,618
Less preferred stock dividends	(2,138)		—		(6,414)		—
Net income available to common shareholders	57,730		36,467		144,884		110,618
Less allocation of earnings to preferred stock	(4,126)		—		(9,388)		—
Net income available to common shareholders after allocation of earnings to preferred stock	$	53,604	$	36,467	$	135,496	$	110,618
Average common shares outstanding	96,269		86,619		96,514		85,398
Net income per share	$	0.56	$	0.42	$	1.40	$	1.30
Diluted EPS
Net income available to common shareholders	$	57,730	$	36,467	$	144,884	$	110,618
Less allocation of earnings to preferred stock	(4,089)		—		(9,304)		—
Net income available to common shareholders after allocation of earnings to preferred stock	$	53,641	$	36,467	$	135,580	$	110,618
Average common shares outstanding	96,269		86,619		96,514		85,398
Add: Dilutive effect of employee restricted stock and stock options	968		806		973		756
Average diluted shares outstanding	97,237		87,425		97,487		86,154
Net income per share	$	0.55	$	0.42	$	1.39	$	1.28

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Note 3 – Securities

The amortized cost, gross unrealized gains and losses and fair value of debt securities AFS and HTM at September 30, 2026 and December 31, 2025 are summarized as follows:

	September 30, 2026
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	60,756	$	8	$	(2,702)	$	58,062
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,728,834		195		(297,828)		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	284,625		207		(11,177)		273,655
Private mortgage-backed securities and collateralized mortgage obligations	81,000		108		(6,590)		74,518
CLOs	317,266		508		(858)		316,916
Obligations of state and political subdivisions	333,779		—		(23,647)		310,132
Other debt securities	176,779		52		(6,960)		169,871
Totals	$	4,983,039	$	1,078	$	(349,762)	$	4,634,355
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	466,721	$	—	$	(109,805)	$	356,916
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		—		(7,866)		78,395
Totals	$	552,982	$	—	$	(117,671)	$	435,311

	December 31, 2025
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	54,831	$	365	$	(451)	$	54,745
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,681,499		41,388		(135,388)		3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	395,165		4,636		(5,928)		393,873
Private mortgage-backed securities and collateralized mortgage obligations	131,846		561		(5,010)		127,397
CLOs	423,864		636		(512)		423,988
Obligations of state and political subdivisions	336,417		651		(2,520)		334,548
Other debt securities	242,672		421		(576)		242,517
Totals	$	5,266,294	$	48,658	$	(150,385)	$	5,164,567
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	498,931	$	—	$	(90,696)	$	408,235
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	87,247		—		(5,922)		81,325
Totals	$	586,178	$	—	$	(96,618)	$	489,560

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During the three and nine months ended September 30, 2026, debt securities with fair values of $234.0 million and $511.1 million, respectively, were sold, with gross losses of $0.1 million and $39.6 million, respectively. During the three months ended September 30, 2025, debt securities with a fair value of $245.7 million assumed in the acquisition of Heartland were sold. No gain or loss was recognized on the sale. During the three and nine months ended September 30, 2025, there were $19.8 million in other sales of securities, with gross losses of $1.0 million. Included in “Securities losses, net” on the Consolidated Statements of Income are decreases of $0.5 million and $0.7 million, respectively, for the three and nine months ended September 30, 2026, and increases of $0.1 million and $0.4 million, respectively, for the three and nine months ended September 30, 2025 in the value of investments in mutual funds that invest in CRA-qualified debt securities.

At September 30, 2026, debt securities with a fair value of $2.2 billion were pledged primarily as collateral for public deposits and secured borrowings.

The amortized cost and fair value of securities HTM and AFS as of September 30, 2026, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held-to-Maturity				Available-for-Sale
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	—	$	—	$	6,265	$	6,260
Due after one year through five years	—		—		2,993		2,921
Due after five years through ten years	—		—		50,352		46,655
Due after ten years	—		—		334,925		312,358
	—		—		394,535		368,194
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	466,721		356,916		3,728,834		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		78,395		284,625		273,655
Private mortgage-backed securities and collateralized mortgage obligations	—		—		81,000		74,518
CLOs	—		—		317,266		316,916
Other debt securities	—		—		176,779		169,871
Totals	$	552,982	$	435,311	$	4,983,039	$	4,634,355

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The estimated fair value of a security is determined based on market quotations, when available, or, if not available, by using quoted market prices for similar securities, pricing models, or discounted cash flow analyses, or using observable market data. The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded. Information pertaining to our securities with gross unrealized losses at September 30, 2026 and December 31, 2025, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss positions is as follows:

	September 30, 2026
	Less Than 12 Months				12 Months or Longer				Total1
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. government agencies	$	46,460	$	(2,252)	$	8,732	$	(450)	$	55,192	$	(2,702)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	2,995,789		(182,019)		398,717		(115,809)		3,394,506		(297,828)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	150,581		(4,669)		68,196		(6,508)		218,777		(11,177)
Private mortgage-backed securities and collateralized mortgage obligations	7,924		(231)		63,609		(6,359)		71,533		(6,590)
CLOs	194,479		(627)		46,960		(231)		241,439		(858)
Obligations of state and political subdivisions	304,841		(22,133)		5,291		(1,514)		310,132		(23,647)
Other debt securities	153,813		(6,960)		—		—		153,813		(6,960)
Totals	$	3,853,887	$	(218,891)	$	591,505	$	(130,871)	$	4,445,392	$	(349,762)
1Comprised of 661 individual securities.

	December 31, 2025
	Less Than 12 Months				12 Months or Longer				Total1
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. government agencies	$	21,846	$	(31)	$	13,932	$	(420)	$	35,778	$	(451)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	378,739		(1,625)		730,551		(133,763)		1,109,290		(135,388)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	90,765		(61)		95,090		(5,867)		185,855		(5,928)
Private mortgage-backed securities and collateralized mortgage obligations	969		(1)		76,829		(5,009)		77,798		(5,010)
CLOs	211,052		(320)		38,882		(192)		249,934		(512)
Obligations of state and political subdivisions	244,168		(1,445)		5,730		(1,075)		249,898		(2,520)
Other debt securities	132,345		(576)		—		—		132,345		(576)
Totals	$	1,079,884	$	(4,059)	$	961,014	$	(146,326)	$	2,040,898	$	(150,385)
1Comprised of 383 individual securities.

At September 30, 2026, the Company had unrealized losses of $2.7 million on U.S. Treasury securities and obligations of U.S. government agencies having a fair value of $55.2 million. These securities are either explicitly or implicitly guaranteed by the full faith and credit of the U.S. government. The Company does not expect individual securities issued by the U.S. Treasury, a U.S. agency, or a sponsored U.S. agency to incur future losses of principal. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and

17

interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had unrealized losses of $309.0 million on commercial and residential mortgage-backed securities and collateralized mortgage obligations issued by government-sponsored entities having a fair value of $3.6 billion. These securities are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments and the high credit rating of the portfolio provide a sufficient basis for the current expectation that there is no risk of loss if default were to occur. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had $6.6 million of unrealized losses on private label residential mortgage-backed securities and collateralized mortgage obligations having a fair value of $71.5 million. All positions held have weighted-average credit support of 22%. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had $0.9 million of unrealized losses in floating rate CLOs having a fair value of $241.4 million. CLOs are special purpose vehicles and those in which the Company has invested are nearly all first-lien, broadly syndicated corporate loans across a diversified band of industries while providing support to senior tranche investors. As of September 30, 2026, all positions held by the Company are in AAA and AA tranches, with weighted-average credit support of 37% and 23%, respectively. The Company evaluates the securities for potential credit losses by modeling expected loan-level defaults, recoveries, and prepayments for each CLO security. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had $23.6 million of unrealized losses on municipal securities having a fair value of $310.1 million and $7.0 million of unrealized losses on other debt securities having a fair value of $153.8 million. These securities are highly rated issuances, all of which are continuing to make timely contractual payments. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. As a result, as of September 30, 2026, no allowance has been recorded.

All HTM debt securities are issued by government-sponsored entities, which are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments, and the high credit rating of the HTM portfolio provide sufficient basis for the current expectation that there is no risk of loss if a default were to occur. As a result, as of September 30, 2026, no allowance has been recorded. The Company has the intent and ability to hold these securities until maturity.

Included in Other assets at September 30, 2026 and December 31, 2025 is $143.9 million and $135.6 million, respectively, of FHLB and Federal Reserve Bank stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Accrued interest receivable on AFS and HTM debt securities of $22.5 million and $0.9 million, respectively, at September 30, 2026, and $24.5 million and $1.0 million, respectively, at December 31, 2025, is included in Other assets. Also included in Other assets are investments in CRA-qualified mutual funds carried at fair value of $13.3 million and $13.9 million at September 30, 2026 and December 31, 2025, respectively.

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Note 4 – Loans

The following tables present net loan balances by segment for portfolio loans, PCD loans and loans purchased which are not considered purchased credit deteriorated (“Non-PCD”) as of:

	September 30, 2026
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total
Construction and land development	$	890,170	$	56,285	$	533	$	946,988
CRE - owner occupied	1,748,659		408,552		19,837		2,177,048
CRE - non-owner occupied	3,303,295		1,010,223		171,761		4,485,279
Residential real estate	2,390,830		862,235		28,390		3,281,455
Commercial and financial	2,101,874		376,240		12,805		2,490,919
Consumer	150,398		41,820		304		192,522
Totals	$	10,585,226	$	2,755,355	$	233,630	$	13,574,211

	December 31, 2025
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total
Construction and land development	$	579,141	$	141,326	$	3,463	$	723,930
CRE - owner occupied	1,505,798		509,118		28,709		2,043,625
CRE - non-owner occupied	2,911,189		1,193,351		150,452		4,254,992
Residential real estate	2,101,868		963,836		33,155		3,098,859
Commercial and financial	1,828,038		476,130		16,821		2,320,989
Consumer	141,768		43,321		500		185,589
Totals	$	9,067,802	$	3,327,082	$	233,100	$	12,627,984

The amortized cost basis of loans included net deferred costs of $48.3 million at September 30, 2026 and $46.3 million at December 31, 2025. At September 30, 2026, the remaining fair value adjustments on acquired loans were $120.8 million, or 3.9% of the outstanding acquired loan balances, compared to $150.0 million, or 4.0% of the acquired loan balances at December 31, 2025. The net discount is accreted into interest income over the remaining lives of the related loans on a level yield basis.

Accrued interest receivable is included within Other assets and was $50.1 million and $45.7 million at September 30, 2026 and December 31, 2025, respectively.

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The following tables present the status of net loan balances as of September 30, 2026 and December 31, 2025.

	September 30, 2026
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
Portfolio Loans
Construction and land development	$	889,348	$	79	$	—	$	—	$	743	$	890,170
CRE - owner occupied	1,735,842		2,219		—		—		10,598		1,748,659
CRE - non-owner occupied	3,299,558		3,262		475		—		—		3,303,295
Residential real estate	2,368,819		4,682		1,046		—		16,283		2,390,830
Commercial and financial	2,082,207		5,908		57		3,533		10,169		2,101,874
Consumer	149,284		722		79		—		313		150,398
Total Portfolio Loans	$	10,525,058	$	16,872	$	1,657	$	3,533	$	38,106	$	10,585,226
Acquired Non-PCD Loans
Construction and land development	$	55,670	$	47	$	—	$	—	$	568	$	56,285
CRE - owner occupied	406,157		60		188		—		2,147		408,552
CRE - non-owner occupied	1,003,595		—		843		303		5,482		1,010,223
Residential real estate	851,390		1,054		421		—		9,370		862,235
Commercial and financial	375,499		91		478		—		172		376,240
Consumer	40,220		67		12		—		1,521		41,820
Total Acquired Non-PCD Loans	$	2,732,531	$	1,319	$	1,942	$	303	$	19,260	$	2,755,355
PCD Loans
Construction and land development	$	62	$	—	$	—	$	—	$	471	$	533
CRE - owner occupied	19,273		—		68		—		496		19,837
CRE - non-owner occupied	159,130		—		—		—		12,631		171,761
Residential real estate	25,508		345		822		—		1,715		28,390
Commercial and financial	11,707		2		501		—		595		12,805
Consumer	211		84		—		—		9		304
Total PCD Loans	$	215,891	$	431	$	1,391	$	—	$	15,917	$	233,630
Total Loans	$	13,473,480	$	18,622	$	4,990	$	3,836	$	73,283	$	13,574,211

 

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	December 31, 2025
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
Portfolio Loans
Construction and land development	$	577,467	$	60	$	—	$	—	$	1,614	$	579,141
CRE - owner occupied	1,489,257		2,313		—		—		14,228		1,505,798
CRE - non-owner occupied	2,908,789		1,735		271		—		394		2,911,189
Residential real estate	2,091,065		4,618		364		—		5,821		2,101,868
Commercial and financial	1,807,012		11,518		19		—		9,489		1,828,038
Consumer	140,679		454		28		—		607		141,768
Total Portfolio Loans	$	9,014,269	$	20,698	$	682	$	—	$	32,153	$	9,067,802
Acquired Non-PCD Loans
Construction and land development	$	140,286	$	—	$	—	$	—	$	1,040	$	141,326
CRE - owner occupied	504,275		204		39		—		4,600		509,118
CRE - non-owner occupied	1,187,231		151		—		—		5,969		1,193,351
Residential real estate	954,820		3,609		195		124		5,088		963,836
Commercial and financial	470,768		50		4,785		—		527		476,130
Consumer	41,103		37		—		—		2,181		43,321
Total Acquired Non-PCD Loans	$	3,298,483	$	4,051	$	5,019	$	124	$	19,405	$	3,327,082
PCD Loans
Construction and land development	$	98	$	—	$	—	$	—	$	3,365	$	3,463
CRE - owner occupied	26,652		—		219		—		1,838		28,709
CRE - non-owner occupied	137,051		389		—		—		13,012		150,452
Residential real estate	30,018		993		833		118		1,193		33,155
Commercial and financial	15,786		—		—		—		1,035		16,821
Consumer	468		30		2		—		—		500
Total PCD Loans	$	210,073	$	1,412	$	1,054	$	118	$	20,443	$	233,100
Total Loans	$	12,522,825	$	26,161	$	6,755	$	242	$	72,001	$	12,627,984

All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest subsequently received on such loans is accounted for under the cost-recovery method, whereby interest income is not recognized until the loan balance is paid down to zero. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, and future payments are reasonably assured. The Company recognized interest income on nonaccrual loans of $0.1 million during each of the three months ended September 30, 2026 and September 30, 2025, respectively. The Company recognized $1.9 million and $2.3 million in interest income on nonaccrual loans during the nine months ended September 30, 2026 and September 30, 2025, respectively.

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The following tables present net balances of loans on nonaccrual status as of:

	September 30, 2026
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	471	$	1,311	$	1,782
CRE - owner occupied	7,191		6,050		13,241
CRE - non-owner occupied	16,753		1,360		18,113
Residential real estate	10,287		17,081		27,368
Commercial and financial	6,655		4,281		10,936
Consumer	1,449		394		1,843
Totals	$	42,806	$	30,477	$	73,283

	December 31, 2025
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	4,207	$	1,812	$	6,019
CRE - owner occupied	15,546		5,120		20,666
CRE - non-owner occupied	18,202		1,173		19,375
Residential real estate	1,448		10,654		12,102
Commercial and financial	3,842		7,209		11,051
Consumer	—		2,788		2,788
Totals	$	43,245	$	28,756	$	72,001

The Company utilizes an internal asset classification system as a means of identifying problem and potential problem loans. The classifications of Pass, Special Mention, Substandard, and Doubtful are used to categorize loans under the internal classification system. Refer to “Note 4 – Loans” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details on classifications.

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The following tables present the risk rating of loans and year-to-date1 gross charge offs by year of origination as of:

	September 30, 2026
(In thousands)	2026		2025		2024		2023		2022		Prior		Revolving		Revolving Converted to Term		Total
Construction and land development
Risk Ratings:
Pass	$	141,590	$	338,416	$	263,669	$	29,009	$	20,956	$	39,032	$	92,012	$	—	$	924,684
Special Mention	—		—		18,911		—		—		204		1,371		—		20,486
Substandard	—		—		—		—		14		655		1,149		—		1,818
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	141,590	$	338,416	$	282,580	$	29,009	$	20,970	$	39,891	$	94,532	$	—	$	946,988
Gross Charge Offs	$	—	$	—	$	—	$	—	$	—	$	34	$	—	$	—	$	34
CRE - owner occupied
Risk Ratings:
Pass	$	385,545	$	361,825	$	178,481	$	141,989	$	209,209	$	793,244	$	34,507	$	—	$	2,104,800
Special Mention	—		—		—		862		7,066		10,269		400		—		18,597
Substandard	—		1,307		9,537		12,182		7,009		23,450		166		—		53,651
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	385,545	$	363,132	$	188,018	$	155,033	$	223,284	$	826,963	$	35,073	$	—	$	2,177,048
Gross Charge Offs	$	—	$	—	$	—	$	23	$	16	$	6	$	—	$	—	$	45
CRE - non-owner occupied
Risk Ratings:
Pass	$	650,875	$	661,495	$	453,804	$	315,929	$	784,362	$	1,438,435	$	17,550	$	—	$	4,322,450
Special Mention	—		8,798		3,717		9,111		19,044		18,154		902		—		59,726
Substandard	—		1,208		48,594		360		25,517		18,625		8,799		—		103,103
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	650,875	$	671,501	$	506,115	$	325,400	$	828,923	$	1,475,214	$	27,251	$	—	$	4,485,279
Gross Charge Offs	$	—	$	—	$	—	$	459	$	593	$	16	$	—	$	—	$	1,068
Residential real estate
Risk Ratings:
Pass	$	404,327	$	229,668	$	166,970	$	158,008	$	438,877	$	1,084,947	$	659,132	$	96,352	$	3,238,281
Special Mention	—		598		—		733		—		1,684		3,442		772		7,229
Substandard	20		280		933		4,397		3,342		13,264		11,444		2,265		35,945
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	404,347	$	230,546	$	167,903	$	163,138	$	442,219	$	1,099,895	$	674,018	$	99,389	$	3,281,455
Gross Charge Offs	$	—	$	—	$	—	$	—	$	164	$	85	$	106	$	—	$	355
Commercial and financial
Risk Ratings:
Pass	$	384,178	$	531,896	$	357,048	$	123,244	$	183,234	$	266,614	$	554,280	$	—	$	2,400,494
Special Mention	351		7,885		1,693		2,852		3,280		1,622		3,249		—		20,932
Substandard	215		12,466		3,394		3,056		3,664		24,260		22,438		—		69,493
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	384,744	$	552,247	$	362,135	$	129,152	$	190,178	$	292,496	$	579,967	$	—	$	2,490,919
Gross Charge Offs	$	—	$	2,111	$	611	$	2,106	$	786	$	3,537	$	2,477	$	—	$	11,628
Consumer
Risk Ratings:
Pass	$	13,446	$	11,605	$	10,488	$	5,393	$	14,477	$	40,411	$	93,836	$	—	$	189,656
Special Mention	11		73		411		4		97		247		59		—		902
Substandard	63		92		—		16		1,525		157		111		—		1,964
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	13,520	$	11,770	$	10,899	$	5,413	$	16,099	$	40,815	$	94,006	$	—	$	192,522
Gross Charge Offs	$	1,096	$	56	$	125	$	140	$	89	$	106	$	81	$	—	$	1,693
Consolidated
Total	$	1,980,621	$	2,167,612	$	1,517,650	$	807,145	$	1,721,673	$	3,775,274	$	1,504,847	$	99,389	$	13,574,211
Gross Charge Offs1	$	1,096	$	2,167	$	736	$	2,728	$	1,648	$	3,784	$	2,664	$	—	$	14,823

1Represents gross charge-offs for the nine months ended September 30, 2026

23

	December 31, 2025
(In thousands)	2025		2024		2023		2022		2021		Prior		Revolving		Revolving Converted to Term		Total
Construction and land development
Risk Ratings:
Pass	$	121,237	$	332,530	$	57,222	$	41,967	$	38,085	$	31,055	$	87,508	$	—	$	709,604
Special Mention	—		—		—		—		4,914		348		—		—		5,262
Substandard	999		—		3,819		2,095		—		965		1,186		—		9,064
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	122,236	$	332,530	$	61,041	$	44,062	$	42,999	$	32,368	$	88,694	$	—	$	723,930
Gross Charge Offs	$	—	$	—	$	115	$	—	$	24	$	17	$	—	$	—	$	156
CRE - owner occupied
Risk Ratings:
Pass	$	405,841	$	180,447	$	156,256	$	235,989	$	241,758	$	703,744	$	29,882	$	—	$	1,953,917
Special Mention	—		7,380		2,816		966		5,319		12,838		398		—		29,717
Substandard	—		3,464		11,342		17,878		2,194		25,038		75		—		59,991
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	405,841	$	191,291	$	170,414	$	254,833	$	249,271	$	741,620	$	30,355	$	—	$	2,043,625
Gross Charge Offs	$	—	$	—	$	—	$	238	$	—	$	490	$	—	$	—	$	728
CRE - non-owner occupied
Risk Ratings:
Pass	$	704,003	$	538,748	$	318,106	$	848,500	$	552,105	$	1,084,106	$	31,102	$	—	$	4,076,670
Special Mention	—		22		8,984		44,738		9,781		42,347		—		—		105,872
Substandard	—		—		—		39,559		9,061		23,830		—		—		72,450
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	704,003	$	538,770	$	327,090	$	932,797	$	570,947	$	1,150,283	$	31,102	$	—	$	4,254,992
Gross Charge Offs	$	—	$	—	$	—	$	—	$	—	$	420	$	—	$	—	$	420
Residential real estate
Risk Ratings:
Pass	$	272,509	$	196,766	$	185,686	$	476,581	$	610,708	$	569,549	$	662,764	$	96,123	$	3,070,686
Special Mention	—		476		78		1,527		—		663		5,068		174		7,986
Substandard	—		318		113		2,120		5,079		6,630		4,810		1,117		20,187
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	272,509	$	197,560	$	185,877	$	480,228	$	615,787	$	576,842	$	672,642	$	97,414	$	3,098,859
Gross Charge Offs	$	—	$	—	$	—	$	145	$	210	$	36	$	19	$	—	$	410
Commercial and financial
Risk Ratings:
Pass	$	582,118	$	414,134	$	151,321	$	252,087	$	215,002	$	167,651	$	495,663	$	—	$	2,277,976
Special Mention	—		1,286		110		584		2,229		6,312		3,570		—		14,091
Substandard	—		716		2,944		5,067		6,538		6,211		6,850		—		28,326
Doubtful	—		—		—		—		596		—		—		—		596
Total	$	582,118	$	416,136	$	154,375	$	257,738	$	224,365	$	180,174	$	506,083	$	—	$	2,320,989
Gross Charge Offs	$	—	$	—	$	85	$	2,075	$	1,231	$	9,637	$	2,493	$	—	$	15,521
Consumer
Risk Ratings:
Pass	$	16,392	$	13,716	$	9,603	$	19,441	$	15,123	$	36,026	$	72,246	$	—	$	182,547
Special Mention	15		33		—		2		—		12		168		—		230
Substandard	4		13		23		2,261		—		461		50		—		2,812
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	16,411	$	13,762	$	9,626	$	21,704	$	15,123	$	36,499	$	72,464	$	—	$	185,589
Gross Charge Offs	$	842	$	201	$	62	$	1,294	$	108	$	42	$	238	$	—	$	2,787
Consolidated
Total	$	2,103,118	$	1,690,049	$	908,423	$	1,991,362	$	1,718,492	$	2,717,786	$	1,401,340	$	97,414	$	12,627,984
Gross Charge Offs1	$	842	$	201	$	262	$	3,752	$	1,573	$	10,642	$	2,750	$	—	$	20,022

1Represents gross charge-offs for the year ended December 31, 2025.

24

TBMs

The following tables present the amortized cost of TBM loans that were modified during the three and nine months ended September 30, 2026 and September 30, 2025.

	Three Months Ended September 30, 2026
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
Residential real estate	$	—	$	506	$	506	0.02	%
Totals	$	—	$	506	$	506	—	%

	Three Months Ended September 30, 2025
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	—	$	132	$	132	0.01	%
Residential real estate	—		83		83		—
Commercial and financial	—		745		745		0.04
Consumer	—		4		4		—
Totals	$	—	$	964	$	964	0.01	%

	Nine Months Ended September 30, 2026
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	—	$	45	$	45	—	%
Residential real estate	—		698		698		0.02
Commercial and financial	—		627		627		0.03
Consumer	—		4		4		—
Totals	$	—	$	1,374	$	1,374	0.01	%

	Nine Months Ended September 30, 2025
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	69	$	132	$	201	0.01	%
Residential real estate	—		300		300		0.01
Commercial and financial	67		2,388		2,455		0.14
Consumer	—		4		4		—
Totals	$	136	$	2,824	$	2,960	0.03	%

25

There were no unfunded lending related commitments associated with TBMs as of September 30, 2026 and September 30, 2025.

The following tables present the payment status of TBM loans that were modified in the twelve months prior to September 30, 2026 and in the twelve months prior to September 30, 2025.

	September 30, 2026
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
CRE - owner occupied	$	280	$	—	$	—	$	—	$	—	$	280
Residential real estate	20		—		—		—		888		908
Commercial and financial	665		69		—		—		84		818
Consumer	4		—		—		—		—		4
Totals	$	969	$	69	$	—	$	—	$	972	$	2,010

	September 30, 2025
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
CRE - owner occupied	$	69	$	—	$	—	$	—	$	132	$	201
Residential real estate	57		—		—		—		472		529
Commercial and financial	2,290		—		—		—		165		2,455
Consumer	—		—		—		—		4		4
Totals	$	2,416	$	—	$	—	$	—	$	773	$	3,189

TBM loans that experienced a payment default and that were modified in the 12 months preceding the default were immaterial for each period presented.

26

Note 5 – Allowance for Credit Losses

Activity in the ACL is summarized as follows:

	Three Months Ended September 30, 2026
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	8,641	$	—	$	388	$	—	$	15	$	9,044
CRE - owner occupied	23,033		—		907		(23)		1		23,918
CRE - non-owner occupied	55,775		8,399		1,678		—		37		65,889
Residential real estate	50,120		—		437		—		22		50,579
Commercial and financial	37,379		—		2,768		(5,789)		636		34,994
Consumer	7,102		—		119		(480)		190		6,931
Totals	$	182,050	$	8,399	$	6,297	$	(6,292)	$	901	$	191,355

	Three Months Ended September 30, 2025
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	6,556	$	—	$	945	$	(139)	$	4	$	7,366
CRE - owner occupied	12,942		22		1,388		(197)		5		14,160
CRE - non-owner occupied	46,627		1		2,828		—		348		49,804
Residential real estate	41,687		60		686		(174)		59		42,318
Commercial and financial	27,109		18		2,411		(4,431)		1,454		26,561
Consumer	7,263		5		113		(371)		234		7,244
Totals	$	142,184	$	106	$	8,371	$	(5,312)	$	2,104	$	147,453

	Nine Months Ended September 30, 2026
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	9,740	$	—	$	(782)	$	(34)	$	120	$	9,044
CRE - owner occupied	16,528		—		7,206		(45)		229		23,918
CRE - non-owner occupied	56,143		8,399		2,254		(1,068)		161		65,889
Residential real estate	51,297		—		(419)		(355)		56		50,579
Commercial and financial	37,943		—		7,105		(11,628)		1,574		34,994
Consumer	7,152		—		691		(1,693)		781		6,931
Totals	$	178,803	$	8,399	$	16,055	$	(14,823)	$	2,921	$	191,355

27

	Nine Months Ended September 30, 2025
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	7,252	$	—	$	241	$	(139)	$	12	$	7,366
CRE - owner occupied	11,825		22		2,503		(197)		7		14,160
CRE - non-owner occupied	43,866		1		4,761		(320)		1,496		49,804
Residential real estate	39,168		60		3,390		(400)		100		42,318
Commercial and financial	27,533		18		10,748		(14,163)		2,425		26,561
Consumer	8,411		5		357		(2,296)		767		7,244
Totals	$	138,055	$	106	$	22,000	$	(17,515)	$	4,807	$	147,453

Management establishes the allowance using relevant available information from both internal and external sources, relating to past events, current economic conditions, and reasonable and supportable forecasts. Forecast data is sourced from Moody’s, a firm widely recognized for its research, analysis, and economic forecasts. The forecasts of future economic conditions are over the expected remaining life of the loan using economic forecasts that revert to long-term historical averages over time.

As of September 30, 2026 and December 31, 2025, the Company utilized a multiple scenario model comprised of a blend of Moody’s economic scenarios and considered the uncertainty associated with the assumptions in the scenarios, including continued actions taken by the Federal Reserve regarding monetary policy and changes in interest rates and the potential impact of those actions. Outcomes could differ from the scenarios utilized, and the Company incorporated qualitative considerations reflecting the risk of uncertain economic conditions, and for additional dimensions of risk that may not be captured in the quantitative model.

The following section discusses changes in the level of the ACL for the three months ended September 30, 2026.

The allowance increased $9.3 million, or 5.1%, during the third quarter of 2026 to $191.4 million, representing 1.41% of loans held for investment as of September 30, 2026.

During the third quarter of 2026, the Company recorded an $8.4 million measurement period adjustment related to an acquired loan that was determined to meet the definition of PCD as of the acquisition date. The measurement period adjustment increased the ACL on acquired PCD loans by $8.4 million based on facts and circumstances that existed at the acquisition date.

In the Construction and land development segment, the increase in allowance is driven by the increase in loan balances. In this segment, the primary source of repayment is typically from proceeds of the sale or permanent financing of the underlying property; therefore, industry and collateral type and estimated collateral values are among the relevant factors in assessing expected losses.

In the CRE - owner-occupied segment, the allowance increased due to the increase in loan balances. Risk characteristics include, but are not limited to, collateral type, note structure and loan seasoning.

In the CRE - non-owner-occupied segment, the allowance increased due to the $8.4 million measurement period adjustment on an acquired loan, and due to the increase in loan balances in this segment. Repayment is often dependent upon rental income from the successful operation of the underlying property or from the sale of the property. Loan performance may be adversely affected by general economic conditions or conditions specific to the real estate market, including property types. Collateral type, note structure, and loan seasoning are among the risk characteristics analyzed for this segment.

The Residential real estate segment includes residential mortgage, home equity loans, and HELOCs. The increase in the allowance is due to the increase in loan balances. Risk characteristics considered for this segment include, but are not limited to, borrower FICO score, lien position, LTV ratios, and loan seasoning.

In the Commercial and financial segment, borrowers are primarily small to medium sized professional firms and other businesses, and loans are generally supported by projected cash flows of the business, collateralized by business assets, and/or guaranteed by the business owners. The allowance decreased in the third quarter due to a decrease in modeled expected losses and due to charge-offs. Industry, collateral type, estimated collateral values, and loan seasoning are among the relevant factors in assessing expected losses.

28

Consumer loans include installment and revolving lines, loans for automobiles, boats, and other personal or family purposes. Risk characteristics considered for this segment include, but are not limited to, collateral type, LTV ratios, loan seasoning, and FICO scores. The decrease in allowance for consumer loans was driven by a decrease in loan balances.

Note 6 – Derivatives

Interest Rate Contracts

The Company offers interest rate swaps when requested by customers to allow them to hedge the risk of rising interest rates on their variable rate loans. Upon entering into these swaps, the Company enters into offsetting positions with counterparties in order to minimize the interest rate risk. These back-to-back swaps are freestanding financial derivatives with the fair values reported in Other assets and Other liabilities. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under the arrangements for financial statement presentation purposes. Gains and losses on these back-to-back swaps, which offset, are recorded through Noninterest income.

Cash Flow Hedges

The Company periodically enters into contracts to mitigate exposure to the variability of future cash flows due to changes in interest rates on certain assets and liabilities. During the fourth quarter of 2025, the Company entered into three interest rate caps, each with a notional amount of $100.0 million, maturing in November 2030 and December 2030. The Company has designated these instruments as cash flow hedges and considers them highly effective in offsetting changes in forecasted cash flows attributable to interest rate movements on certain liabilities. Changes in the fair value of the interest rate caps are recorded in AOCI and subsequently reclassified into earnings when the hedged cash flows affect earnings. Premiums paid for the interest rate caps are amortized into interest income over the term of the hedges.

During the third quarter of 2026, the Company entered into a $200.0 million receive-fixed interest rate swap with an embedded interest rate cap and designated the instrument as a cash flow hedge of forecasted interest receipts on variable-rate assets indexed to one-month SOFR. The hedge, which matures in August 2029, is intended to reduce the impact of declining interest rates on future earnings.

For the three and nine months ended September 30, 2026, the Company recognized gains of $5.3 million and $6.7 million, respectively, in Other comprehensive income related to its cash flow hedges. During the same periods, the Company reclassified $0.1 million and $0.4 million, respectively, from AOCI into interest income as the hedged forecasted transactions affected earnings. The Company expects to reclassify approximately $1.0 million from AOCI into interest income during the next twelve months related to these agreements, which includes the premiums paid.

Fair Value Hedges

The Company periodically enters into interest rate swap contracts to hedge the risk of changes in fair value of the AFS securities portfolio due to changes in SOFR. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in Other comprehensive income. These derivative instruments are primarily for risk management purposes. There were no securities fair value hedges during the three and nine months ended September 30, 2026. For the nine months ended September 30, 2025, the Company recognized through Other comprehensive income, net losses of $0.4 million, and reclassified net losses of $0.5 million out of AOCI into interest income.

The Company has entered into interest rate swap contracts to hedge the risk of changes in the fair value of a pool of residential mortgages due to changes in SOFR. These fair value hedges utilize the portfolio layer method. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in interest income. These derivative instruments are primarily for risk management purposes. For each of the three and nine months ended September 30, 2026, the Company recognized gains through interest income of $0.1 million. For the three and nine months ended September 30, 2025, the Company recognized losses through interest income of $0.5 million and $0.4 million, respectively.

Economic Hedges

The Company enters into IRLCs to originate mortgage loans for which the interest rate on the loan is determined prior to funding, forward loan sale commitments for the future delivery of these mortgage loans for sale on the secondary market, and forward TBA mortgage-backed securities, all of which are classified as freestanding derivatives. For the three and nine months ended September 30, 2026, the Company recognized losses of $0.2 million and gains of $0.3 million, respectively, in Mortgage banking income in the Consolidated Statements of Income related to these non-hedging derivative financial instruments.

29

(In thousands)	Notional Amount		Fair Value		Balance Sheet Category
September 30, 2026
Interest rate contracts1	$	1,390,910	$	39,850	Other assets and Other liabilities
Residential mortgage fair value hedges	250,000		580		Other assets
Interest rate cash flow hedges	500,000		9,358		Other assets
IRLCs	7,673		123		Other liabilities
Forward TBA mortgage-backed securities	7,149		149		Other assets
Forward loan sale commitments	2,019		30		Other liabilities
December 31, 2025
Interest rate contracts1	$	1,152,442	$	25,009	Other assets and Other liabilities
Residential mortgage fair value hedges	400,000		380		Other liabilities
Interest rate caps cash flow hedges	300,000		3,064		Other assets
IRLCs	5,106		495		Other assets
Forward TBA mortgage-backed securities	5,122		94		Other liabilities
Forward loan sale commitments	285		51		Other assets
1Interest rate contracts include risk participation agreements with notional amounts of $131.4 million and $65.3 million at September 30, 2026, and December 31, 2025, respectively with nominal fair value in both periods.

The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges.

	Carrying amount of the hedged items				Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
(In thousands)	September 30, 2026		December 31, 2025		September 30, 2026		December 31, 2025
Loans, net1	$	1,420,491	$	1,043,345	$	(577)	$	559
1These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2026, the portfolio layer method was $250 million, of which $250 million was designated as hedged. At December 31, 2025, the portfolio layer method was $400 million, of which $400 million was designated as hedged.

Note 7 – Securities Sold Under Agreements to Repurchase

Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is required to pledge collateral with value sufficient to fully collateralize borrowings. Company securities pledged were as follows by collateral type and maturity, as of: 

(In thousands)	September 30, 2026		December 31, 2025
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	559,024	$	512,066

Note 8 – Regulatory Capital

The Company is well-capitalized and at September 30, 2026, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the CET1 capital ratio regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well-capitalized banks under the regulatory framework for prompt corrective action.

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Note 9 – Contingent Liabilities

The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, operating results or cash flows.

Note 10 – Fair Value

Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2026 and December 31, 2025 included:

(In thousands)	Fair Value Measurements		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
At September 30, 2026
Financial Assets
Debt securities AFS1	$	4,634,355	$	100	$	4,634,255	$	—
Derivative financial instruments2	49,937		—		49,937		—
Loans held for sale2	14,462		—		14,462		—
OREO3	3,263		—		—		3,263
Equity securities4	13,255		13,255		—		—
MSR5	29,398		—		—		29,398
Financial Liabilities
Derivative financial instruments2	$	40,003	$	—	$	39,850	$	153
At December 31, 2025
Financial Assets
Debt securities AFS1	$	5,164,567	$	200	$	5,164,367	$	—
Derivative financial instruments2	28,620		—		28,125		495
Loans held for sale2	16,297		—		16,297		—
OREO3	4,250		—		—		4,250
Equity securities4	13,923		13,923		—		—
MSR5	28,061		—		—		28,061
Financial Liabilities
Derivative financial instruments2	$	25,483	$	—	$	25,389	$	94
1See “Note 3 – Securities” for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data for level 2 inputs. Level 3 inputs utilize a market approach that incorporates a pull-through rate assumption.
3Fair value is measured on a nonrecurring basis.
4Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other assets. Recurring fair value basis is determined using market quotations with fair value adjustments recognized in earnings.
5Recurring fair value basis determined using unobservable market data. Refer to “Note 8 - Goodwill and Acquired Intangible Assets” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details on assumptions utilized.

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Derivative financial instruments: The fair value of these derivatives is based on a discounted cash flow approach. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps and forward TBA mortgage-backed securities is classified as Level 2. The fair values of these instruments are based upon the estimated amount the Company would receive or pay to terminate the instruments, taking into account current interest rates and, when appropriate, the current credit worthiness of the counterparties. IRLCs and forward loan sale commitment fair values are estimated based on quoted prices for similar loans in active markets. However, the value is adjusted by a factor which considers the likelihood of a loan in a lock position will ultimately close. This closing ratio is derived from internal data and is adjusted using significant accounting judgment. As such, these derivatives are classified as Level 3 measurements and the Company values these derivatives primarily using a market approach that incorporates flow mandatory market pricing, adjusted for expected pull‑through based on historical experience. For IRLCs, the weighted-average pull-through rate was 96% and 94% at September 30, 2026 and December 31, 2025, respectively, while the weighted-average current reference price was 98.32% and 101.26%, respectively. For forward loan sale commitments, the weighted-average pull-through rate was 100% at both September 30, 2026 and December 31, 2025, while the weighted-average current reference price was 98.50% and 101.12%, respectively.

Loans and OREO: Fair values of collateral-dependent real estate loans and OREO are based on recent real estate appraisals less estimated costs of sale. Evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost, and/or income approach. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time, but none were made by management. The fair values of these loans and properties are considered Level 3 in the fair value hierarchy. There were no collateral-dependent loans measured at fair value at both September 30, 2026 and December 31, 2025.

MSRs: The fair value of these servicing rights is based on an income approach. Various unobservable inputs to assumptions including expected cash flows, market discount rates, prepayment rates, servicing costs, and other factors are utilized, therefore the valuation of MSRs is classified as Level 3.

The following table presents changes in the Company's MSRs measured at fair value for the three and nine months ended September 30, 2026. There was no MSR balance during the three and nine months ended September 30, 2025:

	Three Months Ended		Nine Months Ended
(In thousands)	September 30, 2026
Carrying value at beginning of period	$	26,784	$	28,061
Originated servicing rights capitalized upon sale of loan	517		1,448
Change in fair value:
Due to payoffs/paydowns	(689)		(2,172)
Due to change in valuation inputs or assumptions	2,786		2,061
Carrying value at end of period	$	29,398	$	29,398

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The following table presents data and key economic assumptions, as well as the valuation's sensitivity to interest rate fluctuations, related to the Company’s MSRs as of:

(In thousands)	September 30, 2026			December 31, 2025
Unpaid principal balance	$	2,365,165		$	2,540,798
Prepayment rate assumptions:
Weighted-average	9.58		%	12.74		%
Estimated impact on fair value of a 10% increase	$	(1,182)		$	(1,373)
Estimated impact on fair value of a 20% increase	(2,282)			(2,639)
Option-adjusted spread:
Weighted-average	5.50		%	5.50		%
Estimated impact on fair value of a 100 basis point increase	$	(1,201)		$	(1,163)
Estimated impact on fair value of a 200 basis point increase	(2,306)			(2,232)
Weighted-average coupon interest rate	4.78		%	4.78		%
Weighted-average servicing fee	0.25			0.25
Weighted-average remaining maturity (in months)	349			348

The sensitivity calculations above are hypothetical changes and should not be considered to be predictive of future performance. Changes in fair value based on variations in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, the effect of a variation in a particular assumption on the fair value is calculated without changing any other assumption, while in reality changes in one factor may result in changes in another, which may either magnify or counteract the effect of the change.

For recurring fair value measurements, transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarterly valuation process. During the nine months ended September 30, 2026, there were no such transfers.

For additional information on the valuation techniques and significant inputs for Level 2 and Level 3 assets and liabilities that are measured at fair value on a recurring basis, see “Note 16 - Fair Value” of the Annual Report on Form 10-K for the year ended December 31, 2025.

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The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2026 and December 31, 2025 is as follows:

(In thousands)	Carrying Amount		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2026
Financial Assets
HTM debt securities1	$	552,982	$	—	$	435,311	$	—
Loans, net	13,382,856		—		147,248		12,837,275
Financial Liabilities
Deposits	16,580,159		—		—		16,580,540
FHLB and other borrowings	985,000		—		984,948		—
Subordinated debt	95,693		—		94,099		—
December 31, 2025
Financial Assets
HTM debt securities1	$	586,178	$	—	$	489,560	$	—
Time deposits with other banks	14,424		—		13,455		—
Loans, net	12,449,181		—		—		12,263,824
Financial Liabilities
Deposits	16,256,343		—		—		16,257,291
FHLB and other borrowings	835,000		—		833,483		—
Subordinated debt	95,161		—		90,248		—
1See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories.

The short maturity of the Company’s assets and liabilities results in a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest-bearing deposits with other banks, and securities sold under agreements to repurchase.

The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at September 30, 2026 and December 31, 2025:

HTM debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of Level 3 loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. The fair value of Level 2 loans is valued using observable market-based inputs, including quoted prices obtained from third-party pricing services based on recent market transactions and dealer quotations for comparable instruments.

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Investments at NAV: The Company has equity investments in SBICs accounted for under the fair value practical expedient of NAV included in Other assets totaling $24.4 million at September 30, 2026 and $26.4 million at December 31, 2025, which are not included in the fair value hierarchy. These investments are made primarily through various SBIC funds as a strategy to provide expansion and growth opportunities to small businesses and are subject to various risks, including market, liquidity, and credit risk. SBICs are generally structured to operate for approximately 10 years and the Company’s investments are not redeemable. Distributions are received through the liquidation of the underlying assets, which is expected to occur over the next 5-10 years. Unfunded commitments related to these investments were $7.8 million at September 30, 2026 and $8.7 million at December 31, 2025.

Deposit liabilities: The fair value of demand deposits, savings accounts, and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

Note 11 – Business Combinations

Acquisition of Villages Bancorporation, Inc.

On October 1, 2025, the Company completed its acquisition of VBI, adding 19 branches in North Central Florida including The Villages® community. The Company acquired 100% of the outstanding common stock of VBI. Pursuant to the merger agreement, each share of VBI common stock was converted into the right to receive, at the shareholders' election, (i) $1,000.00 in cash, (ii) 38.5000 shares of Seacoast common stock or (iii) a 25% - 75% combination of cash and common stock, with the final election subject to a proration mechanism such that 25% of VBI shares received the cash consideration and 75% of VBI shares received the stock consideration. In the event any shareholder or shareholder group would have received more than 9.75% of cumulative outstanding Seacoast common stock, non-voting convertible preferred stock was issued in lieu of the excess amount of common shares. The final consideration totaled $829.1 million.

(In thousands, except per share data)	October 1, 2025
Number of VBI shares receiving stock	550
Per share exchange ratio for VBI shares receiving stock	38.5000
Number of shares of SBCF common stock issued	9,923
Number of shares of SBCF preferred stock issued1	11
Multiplied by SBCF price per share at October 1, 2025	$	30.50
Total Value of SBCF common and preferred stock issued	$	645,785
Number of VBI shares receiving cash	183
Per share exchange ratio for VBI shares receiving cash	$	1,000.00
Cash consideration paid to VBI shareholders, including cash paid for fractional shares	183,360
Total purchase price	$	829,145
1Preferred stock is 1/1000th share for every share of common stock.

The acquisition of VBI was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $287.5 million for this acquisition that is nondeductible for tax purposes. Determining fair values of assets and liabilities, especially the loan portfolio, CDI, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.

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The table below presents the allocation of the purchase consideration.

(In thousands)	Initially Measured October 1, 2025		Measurement Period Adjustments		As Adjusted October 1, 2025
Assets:
Cash and cash equivalents	$	166,758	$	—	$	166,758
Investment securities	2,540,434		(42)		2,540,392
Loans	1,202,389		(9,051)		1,193,338
Bank premises and equipment	45,942		—		45,942
CDI	110,548		—		110,548
Goodwill	280,087		7,419		287,506
Other assets	99,776		—		99,776
Total Assets	$	4,445,934	$	(1,674)	$	4,444,260
Liabilities:
Deposits	$	3,450,869	$	—	$	3,450,869
Securities sold under agreements to repurchase	105,064		—		105,064
Other liabilities	60,856		(1,674)		59,182
Total Liabilities	$	3,616,789	$	(1,674)	$	3,615,115

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.

	October 1, 2025
(In thousands)	Book Balance		Fair Value
Loans:
Construction and land development	$	102,067	$	90,149
CRE - owner occupied	93,284		90,147
CRE - non-owner occupied	361,699		335,761
Residential real estate	365,935		349,786
Commercial and financial	335,831		322,276
Consumer	5,332		5,219
Total acquired loans	$	1,264,148	$	1,193,338

The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination:

(In thousands)	Initially Measured October 1, 2025		Measurement Period Adjustments		As Adjusted October 1, 2025
Book balance of loans at acquisition	$	148,575	$	43,195	$	191,770
ACL at acquisition	(3,026)		(8,400)		(11,426)
Non-credit related discount	(19,198)		(300)		(19,498)
Total PCD loans acquired	$	126,351	$	34,495	$	160,846

The acquisition of VBI resulted in the addition of $34.1 million in ACL, including $11.4 million for PCD loans, and $22.7 million for non-PCD loans recorded through the provision for credit losses.

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The Company believes the deposits assumed in the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates, and age of deposit relationships. The CDI asset acquired from VBI is being amortized over 10 years using an accelerated method of amortization.

The Company assumed a financing obligation recognized within Long-term debt, net, refer to “Note 11 - Lease Commitments” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details.

Pro-forma Information

The table below presents pro-forma data as if the acquisition of VBI occurred at the beginning of 2025. The pro-forma information is presented for illustrative purposes only and is not necessarily indicative of the results of operations that would have occurred if the transactions had been effected on the assumed dates.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Net interest income	$	183,355	$	166,135	$	540,220	$	470,955
Net income available to common shareholders	57,730		48,297		144,884		122,202
EPS - diluted	0.55		0.46		1.39		1.17
EPS - basic	$	0.56	$	0.46	$	1.40	$	1.18

Acquisition of Heartland Bancshares, Inc.

On July 11, 2025, the Company completed its acquisition of Heartland, adding four branches in Central Florida. The Company acquired 100% of the outstanding common and preferred stock of Heartland. Under the terms of the definitive agreement, Heartland shareholders received a combination of cash and common stock, with the final consideration totaling $111.2 million.

(In thousands, except per share data)	July 11, 2025
Number of Heartland shares receiving stock	378
Per share exchange ratio for Heartland shares receiving stock	4.9263
Number of shares of SBCF common stock issued	1,862
Multiplied by SBCF price per share at July 11, 2025	$	29.29
Value of SBCF common stock issued	$	54,547
Number of Heartland shares receiving cash	378
Per share cash consideration for Heartland shares receiving cash	$	147.10
Cash consideration paid to Heartland shareholders, including cash paid for fractional shares	$	55,623
Cash paid to Heartland option holders	1,054
Total purchase price	$	111,224

The acquisition of Heartland was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $22.2 million for this acquisition that is nondeductible for tax purposes. Determining fair values of assets and liabilities, especially the loan portfolio, CDI, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.

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The table below presents the allocation of the purchase consideration.

(In thousands)	July 11, 2025
Assets:
Cash and cash equivalents	$	242,672
Investment securities	357,905
Loans	153,294
Bank premises and equipment	7,926
CDI	20,922
Goodwill	22,228
Other assets	18,590
Total Assets	$	823,537
Liabilities:
Deposits	$	705,195
Other liabilities	7,118
Total Liabilities	$	712,313

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.

	July 11, 2025
(In thousands)	Book Balance		Fair Value
Loans:
Construction and land development	$	7,575	$	7,496
CRE - owner occupied	31,504		30,790
CRE - non-owner occupied	40,239		38,992
Residential real estate	52,960		51,434
Commercial and financial	21,104		21,029
Consumer	3,614		3,553
Total acquired loans	$	156,996	$	153,294

The book value and fair value amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination was $7.2 million and $6.4 million, respectively.

The acquisition of Heartland resulted in the addition of $2.0 million in ACL, including $0.1 million for PCD loans, and $1.9 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition.

The Company believes the deposits assumed in the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates, and age of deposit relationships. The CDI asset acquired from Heartland is being amortized over 10 years using an accelerated method of amortization.

Acquisition of W.L. Hunter Insurance Agency, LLC

On July 1, 2026, the Company, through its wholly-owned Nature Coast Insurance subsidiary, completed its acquisition of the W.L. Hunter Insurance Agency, LLC for total consideration of $5.8 million. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill and a customer relationship intangible asset of $2.9 million each. The goodwill is not deductible for tax purposes. The customer relationship intangible asset is being amortized on a straight-line basis over 10 years.

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Note 12 – Business Segment

The Company's one reportable segment provides integrated financial services including commercial and consumer banking, wealth management, and mortgage and insurance services to customers. Segment revenues are driven primarily by interest and fees on loans, interest on cash and cash equivalents and on investment securities, and fees on depository products and services.

The Company manages business activities, allocates resources and evaluates financial performance on an organization-wide basis. The CODM is the CEO. The financial results of the segment are presented using the same policies described in “Note 1 - Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

The CODM evaluates the performance of the segment and allocates resources based on net income that is also reported on the Consolidated Statements of Income as consolidated net income and segment assets that are reported on the Consolidated Balance Sheets as total consolidated assets. Net income is used to monitor budget versus actual results. The significant segment expenses that are regularly provided to the CODM are interest expense, provision for credit losses, salaries and employee benefits, outsourced data processing costs, and occupancy, which are all reflected in the Consolidated Statements of Income. Certain noncash expenses, such as depreciation and amortization expense, are disclosed in the Consolidated Statement of Cash Flows.

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS 

The purpose of this discussion and analysis is to aid in understanding significant changes in the financial condition of Seacoast Banking Corporation of Florida and its subsidiaries (“Seacoast” or the “Company”) and their results of operations. Nearly all of the Company’s operations are contained in its banking subsidiary, Seacoast National Bank (“Seacoast Bank” or the “Bank”). Such discussion and analysis should be read in conjunction with the Company’s Consolidated Financial Statements and the related notes included in this report.

For the consolidated statements of income, the emphasis of this discussion will be on the three months ended September 30, 2026, compared to the three months ended June 30, 2026, and September 30, 2025, as well as the nine months ended September 30, 2026, compared to the nine months ended September 30, 2025. For the consolidated balance sheets, the emphasis of this discussion will be the balances as of September 30, 2026, compared to December 31, 2025.

This discussion and analysis contain statements that may be considered “forward-looking statements” as defined in, and subject to the protections of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. See the following section for additional information regarding forward-looking statements.

For purposes of the following discussion, the words “Seacoast” or the “Company” refer to the combined entities of Seacoast Banking Corporation of Florida and its direct and indirect wholly owned subsidiaries.

Special Cautionary Notice

Regarding Forward-Looking Statements

Certain statements made or incorporated by reference herein which are not statements of historical fact, including those under “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere herein, are “forward-looking statements” within the meaning, and protections, of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements include statements with respect to the Company’s beliefs, plans, objectives, goals, expectations, anticipations, assumptions, estimates, and intentions regarding future events, performance, financial condition, results of operations and business strategies, and involve known and unknown risks, uncertainties and other factors, which may be beyond the Company’s control, and which may cause the actual results, performance or achievements of the Company or its wholly-owned banking subsidiary, Seacoast Bank, to be materially different from those set forth in the forward-looking statements. The Company undertakes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

All statements other than statements of historical fact could be forward-looking statements. You can identify these forward-looking statements through the use of words such as “may,” “will,” “anticipate,” “assume,” “should,” “support,” “indicate,” “would,” “believe,” “contemplate,” “expect,” “estimate,” “continue,” “further,” “plan,” “point to,” “project,” “could,” “intend,” “target” or other similar words and expressions of the future. These forward-looking statements may not be realized due to a variety of factors, including, without limitation:

•The impact of current and future economic and market conditions generally (including seasonality) and in the financial services industry, nationally and within Seacoast’s primary market areas, including the effects of continued inflationary pressures, changes in interest rates, tariffs or trade wars (including reduced consumer spending, supply chain issues, and adverse impacts to credit quality), a sustained increase in commodity prices, slowdowns in economic growth or recession, and the potential for high unemployment rates, as well as the financial stress on borrowers and changes to customer and client behavior and credit risk as a result of the foregoing;

•Potential impacts of adverse developments in the banking industry, or as encountered by other financial institutions that adversely affect Seacoast, and including impacts on customer confidence, deposit outflows, liquidity and the regulatory response thereto (including increases in the cost of our deposit insurance assessments), the Company’s ability to effectively manage its liquidity risk and any growth plans, and the availability of capital and funding;

•Governmental monetary and fiscal policies, including interest rate policies of the FRB, as well as risks related to legislative, tax and regulatory changes, including those that impact the money supply and inflation;

•The risks of changes in interest rates on the level and composition of deposits (as well as the cost of, and competition for, deposits), loan demand, liquidity and the values of loan collateral, securities, and interest rate sensitive assets and liabilities;

•Interest rate risks (including the impact of interest rates on macroeconomic conditions, customer and client behavior, and on our net interest income), sensitivities, and the shape of the yield curve;

•The risks relating to bank acquisitions, which include, without limitation: the diversion of management's time on issues related to the integration; unexpected transaction costs, including the costs of integrating operations; the risks that the

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businesses will not be integrated successfully or that such integration may be more difficult, time-consuming or costly than expected; the potential failure to fully or timely realize expected revenues and revenue synergies, including as the result of revenues following acquisitions being lower than expected; the risk related to the accounting and regulatory capital treatment of the Series A Non-Voting Convertible Preferred Stock and the impact on the Company's financial statements; the risk of deposit and customer attrition; regulatory enforcement and litigation risk; any changes in deposit mix; unexpected operating and other costs, which may differ or change from expectations; the risks of customer and employee loss and business disruptions, including, without limitation, as the result of difficulties in maintaining relationships with employees; increased competitive pressures and solicitations of customers by competitors; as well as the difficulties and risks inherent with entering new markets;

•Risks related to our implementation of new lines of business, new products and services, new technologies, and expansion of our existing business opportunities, including entering and/or expanding markets through de novo branching;

•Changes in accounting policies, rules, and practices;

•Changes in retail distribution strategies, customer preferences and behavior generally and as a result of economic factors, including heightened or persistent inflation;

•Changes in borrower credit risks and payment behaviors, and changes in the availability and cost of credit and capital in the financial markets;

•Changes in the prices, values and sales volumes of residential and CRE properties, especially as they relate to the value of collateral supporting the Company’s loans;

•The Company’s concentration in CRE loans and in real estate collateral in Florida;

•Seacoast’s ability to comply with any regulatory requirements and the risk that the regulatory environment may not be conducive to or may prohibit or delay the consummation of future mergers and/or business combinations, may increase the length of time and amount of resources required to consummate such transactions, and may reduce the anticipated benefit;

•Inaccuracies or other failures from the use of models, including the failure of assumptions and estimates (including with respect to our financial statements), as well as differences in, and changes to, economic, market and credit conditions;

•The impact on the valuation of Seacoast’s investments due to market volatility or counterparty payment risk, as well as the effect of a decline in stock market prices on our fee income from our wealth management business;

•Statutory and regulatory dividend restrictions;

•Increases in regulatory capital requirements for banking organizations generally;

•Changes in technology or products that may be more difficult, costly, or less effective than anticipated;

•The timely development and acceptance of new products and services as well as risks (including reputational and litigation) attendant thereto, and perceived overall value of these products and services by users;

•Risks and costs associated with the development, implementation and use of artificial intelligence and other emerging technologies, including risks relating to data privacy, cybersecurity, model accuracy, regulatory compliance, intellectual property rights and operational effectiveness;

•The Company’s ability to identify and address increased cybersecurity risks, including those impacting vendors and other third parties which may be exacerbated by developments in generative artificial intelligence;

•Fraud or misconduct by internal or external parties, which Seacoast may not be able to prevent, detect or mitigate;

•Inability of Seacoast’s risk management framework to manage risks associated with the Company’s business;

•Dependence on key suppliers or vendors to obtain equipment or services for the business on acceptable terms, including risks associated with reliance on third-party service providers, cloud-based platforms, fintech partners and other technology providers, and disruptions, outages, cybersecurity incidents or failures affecting such third parties;

•Reduction in or the termination of Seacoast’s ability to use the online- or mobile-based platform that is critical to the Company’s business growth strategy;

•The effects of war, regime change, civil unrest, or other conflicts, acts of terrorism, natural disasters, including hurricanes in the Company’s footprint, health emergencies, epidemics or pandemics, or other catastrophic events that may affect general economic conditions and/or increase costs, including, but not limited to, property and casualty and other insurance costs;

•Seacoast’s ability to maintain adequate internal controls over financial reporting;

•Potential or actual claims, damages, penalties, fines, costs, unexpected outcomes and reputational damage resulting from new, existing, pending or future litigation, regulatory proceedings and enforcement actions;

41

•Negative publicity and the impact on Seacoast’s reputation, including the speed and scale at which information can spread through social media or digital channels, which could amplify adverse market or customer reactions;

•The risks that DTAs could be reduced if estimates of future taxable income from the Company’s operations and tax planning strategies are less than currently estimated, the results of tax audit findings, challenges to our tax positions, or adverse changes or interpretations of tax laws;

•The effects of competition (including the inability to grow, or attrition of, deposits, customers and employees) from other commercial banks, thrifts, mortgage banking firms, consumer finance companies, credit unions, non-bank financial technology providers, securities brokerage firms, insurance companies, private credit funds, money market and other mutual funds and other financial institutions;

•The failure of assumptions underlying the establishment of reserves for expected credit losses;

•Impairment of our goodwill or other intangible assets;

•Risks related to, and the costs associated with ESG and anti-ESG matters, including the scope and pace of related rulemaking activity, disclosure requirements and potential litigation and enforcement;

•Action or inaction by the federal government, including as a result of any prolonged government shutdown (including a partial shutdown) or government intervention in the U.S. financial system;

•Legislative, regulatory or supervisory actions related to so‑called “de‑banking,” including any new prohibitions, requirements or enforcement priorities that could affect customer relationships, compliance obligations, or operational practices;

•A deterioration of the credit rating for U.S. long-term sovereign debt, actions that the U.S. government may take to avoid exceeding the debt ceiling, and uncertainties surrounding the federal budget and economic policy, including the impact of tariffs and trade policies;

•The risk that balance sheet, revenue growth, and loan growth expectations may differ from actual results; and

•Other factors and risks described under “Risk Factors” herein and in any of the Company’s subsequent reports filed with the SEC and available on its website at www.sec.gov.

All written or oral forward-looking statements attributable to Seacoast are expressly qualified in their entirety by this cautionary notice. The Company assumes no obligation to update, revise or correct any forward-looking statements that are made from time to time, either as a result of future developments, new information or otherwise, except as may be required by law. Additional factors that could cause actual results to differ materially can be found in Part I, Item 1A. “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2025, or in other periodic reports that we file with the SEC.

Business Developments

Seacoast’s balanced growth strategy includes both acquisitions and organic growth initiatives. In the second half of 2025, Seacoast acquired both Heartland and VBI. These transformative transactions together added 23 branch locations, $5.3 billion in assets, and $4.2 billion in deposits, bringing leading market share and significant liquidity, further strengthening the Company’s competitive position and enhancing our capacity for sustained profitable growth. Full integration and system conversion activities for Heartland were completed in the third quarter of 2025, and for VBI in the third quarter of 2026. Complementing acquisitions with organic growth, in recent years Seacoast has added experienced bankers in dynamic and growing markets, leading to significant growth in new relationships. These efforts have supported core deposit generation, loan production, and expansion of client relationships across multiple product lines.

Results of Operations

Seacoast provides integrated financial services including commercial and consumer banking, wealth management, mortgage and insurance services to customers at 105 full-service branches across Florida and Georgia, and through advanced mobile and online banking solutions. The Company’s financial results in the third quarter of 2026 included strong growth in loans supporting improved net interest income. Seacoast continues to prudently manage expenses while strategically investing to support continued growth. Highlights for the third quarter of 2026 included:

•Net income of $59.9 million, or $0.55 per diluted share, increased 1% from the second quarter of 2026 and 64% from the third quarter of 2025. Adjusted net income1 of $71.8 million, or $0.66 per diluted share, increased 9% from the second quarter of 2026 and 59% from the third quarter of 2025.

•Adjusted pre-tax pre-provision earnings1 increased 5% compared to the second quarter of 2026 and 49% compared to the third quarter of 2025.

•Net interest income grew 2% compared to the second quarter of 2026 and 37% compared to the third quarter of 2025.

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•The net interest margin was stable at 3.83% compared to the second quarter of 2026, and excluding accretion on acquired loans, expanded one basis point to 3.66% from the second quarter of 2026.

•13% annualized organic loan growth in the third quarter of 2026 and 10% annualized growth year to date.

•Average noninterest-bearing deposits grew 4% annualized from the second quarter of 2026 and noninterest-bearing demand deposits have grown 10% annualized year to date.

•Continued share repurchases, with over 1.2 million shares of common stock repurchased year to date.

•Successfully completed the integration of VBI, solidifying a long-term growth partnership.

•Continued improvement in profitability metrics. Key metrics include:

	Third		Second		Third		Nine Months Ended September 30,
	Quarter		Quarter		Quarter
	2026		2026		2025		2026		2025
ROA	1.11	%	1.13	%	0.88	%	0.96	%	0.93	%
ROTE	14.34		14.44		10.70		12.44		11.23
Efficiency ratio	61.00		58.52		64.44		59.68		62.94
Adjusted ROA1	1.34	%	1.25	%	1.09	%	1.30	%	1.02	%
Adjusted ROTE1	16.89		15.79		12.98		16.32		12.25
Adjusted efficiency ratio1	53.87		54.54		57.63		54.56		59.77
1Non-GAAP measure - see “Explanation of Certain Unaudited Non-GAAP Financial Measures” for more information and a reconciliation to GAAP.

Net Interest Income and Margin

Net interest income for the third quarter of 2026 totaled $183.4 million, an increase of $3.0 million, or 2%, compared to the second quarter of 2026, and an increase of $49.9 million, or 37%, compared to the third quarter of 2025. The year-over-year increase was primarily driven by higher loan and securities balances resulting from the acquisitions completed in 2025. Interest income on loans in the third quarter of 2026 increased by $9.2 million, or 5%, compared to the second quarter of 2026, reflecting higher average loan balances and higher core loan yields. Securities income decreased $0.8 million, or 1%, compared to the second quarter of 2026, as improved securities portfolio yields were more than offset by lower average securities balances. Accretion on acquired loans was $8.5 million in the third quarter of 2026, $8.9 million in the second quarter of 2026, and $9.5 million in the third quarter of 2025. Interest expense on deposits increased $4.3 million, or 7%, compared to the second quarter of 2026, and increased $7.7 million, or 13%, compared to the third quarter of 2025, primarily due to higher average balances and higher rates.

For the nine months ended September 30, 2026, net interest income totaled $540.2 million, an increase of $161.4 million, or 43%, compared to the nine months ended September 30, 2025. Interest income on loans for the nine months ended September 30, 2026 increased by $101.6 million, or 22%, compared to the nine months ended September 30, 2025, reflecting higher average loan balances from organic growth and the acquisitions completed in 2025. Securities income increased $86.4 million, or 88%, compared to the nine months ended September 30, 2025, reflecting higher average securities balances and improved portfolio yields following the securities repositioning executed in the first quarter of 2026. Accretion on acquired loans totaled $29.5 million for the nine months ended September 30, 2026, compared to $28.3 million for the nine months ended September 30, 2025. For the nine months ended September 30, 2026, interest expense on deposits increased $18.4 million, or 11%, compared to the nine months ended September 30, 2025, primarily due to higher average balances resulting from bank acquisitions in 2025, partially offset by lower deposit costs.

Net interest margin (on an FTE basis) was stable at 3.83% in the third quarter of 2026 compared to the second quarter of 2026, and expanded 26 basis points from 3.57% in the third quarter of 2025. Excluding the effects of accretion on acquired loans, net interest margin expanded one basis point to 3.66% in the third quarter of 2026 compared to 3.65% in the second quarter of 2026, and increased 34 basis points compared to 3.32% in the third quarter of 2025. The expansion in net interest margin, excluding accretion on acquired loans, was driven by higher securities portfolio yields and improved loan yields, which more than offset higher funding costs. The yield on loans increased to 5.89% for the third quarter of 2026, an increase of one basis point from the second quarter of 2026 and decreased seven basis points from the third quarter of 2025. Yield on loans, excluding accretion on acquired loans, was 5.64%, an increase of three basis points from both the second quarter of 2026 and the third quarter of 2025. The effect on net interest margin of accretion of purchase discounts on acquired loans was an increase of 17 basis points for the third quarter of 2026, 18 basis points in the second quarter of 2026, and 25 basis points in the third

43

quarter of 2025. The cost of deposits was 1.60% in the third quarter of 2026, compared to 1.53% in the second quarter of 2026, and 1.81% in the third quarter of 2025. The cost of funds was 1.74% in the third quarter of 2026, compared to 1.69% in the second quarter of 2026, and 1.96% in the third quarter of 2025. Compared to the second quarter of 2026, securities yields increased five basis points in the third quarter of 2026 to 4.52% and increased 60 basis points from the third quarter of 2025.

For the nine months ended September 30, 2026, net interest margin (on an FTE basis) increased 28 basis points to 3.83% compared to the nine months ended September 30, 2025, largely driven by higher securities yields and lower funding costs, including lower deposit costs. The yield on securities was 4.45% for the nine months ended September 30, 2026, compared to 3.89% for the nine months ended September 30, 2025. The yield on total loans decreased from 5.95% for the nine months ended September 30, 2025 to 5.91% for the nine months ended September 30, 2026. The effect on net interest margin of accretion of purchase discounts on acquired loans was an increase of 21 basis points for the nine months ended September 30, 2026, compared to 27 basis points for the nine months ended September 30, 2025. The cost of deposits was 1.56% for the nine months ended September 30, 2026, a decrease of 29 basis points compared to the nine months ended September 30, 2025. The cost of funds was 1.71% for the nine months ended September 30, 2026, a decrease of 29 basis points compared to the nine months ended September 30, 2025.

Average loans increased $479.7 million, or 4%, for the third quarter of 2026 compared to the second quarter of 2026, and increased $2.5 billion, or 23%, from the third quarter of 2025. For the nine months ended September 30, 2026, average loans increased $2.4 billion, or 22%, from the nine months ended September 30, 2025.

Average loans as a percentage of average earning assets totaled 70% for the third quarter of 2026, 67% for the second quarter of 2026, and 73% for the third quarter of 2025. For the nine months ended September 30, 2026, average loans as a percentage of average earning assets totaled 68%, compared to 74% for the nine months ended September 30, 2025.

During the third quarter of 2026, average investment securities decreased $204.6 million, or 4%, compared to the second quarter of 2026, and increased $1.9 billion, or 51%, compared to the third quarter of 2025. The Company sold $234.0 million in securities during the third quarter of 2026 to fund strong loan growth. Securities yields increased five basis points to 4.52% during the third quarter of 2026 from 4.47% in the second quarter of 2026, and increased 60 basis points from 3.92% in the third quarter of 2025. For the nine months ended September 30, 2026, average investment securities were $5.6 billion, an increase of $2.3 billion, or 68%, compared to the nine months ended September 30, 2025.

The cost of average interest-bearing liabilities increased eight basis points in the third quarter of 2026 to 2.27% from 2.19% in the second quarter of 2026 and decreased 36 basis points from 2.63% in the third quarter of 2025. The cost of average total deposits (including noninterest-bearing demand deposits) was 1.60% in the third quarter of 2026, 1.53% in the second quarter of 2026, and 1.81% in the third quarter of 2025. For the nine months ended September 30, 2026, the cost of average total deposits (including noninterest-bearing demand deposits) was 1.56% compared to 1.85% for the nine months ended September 30, 2025.

During the third quarter of 2026, average total deposits increased $185.9 million, or 1%, compared to the second quarter of 2026, and increased $3.7 billion, or 28%, compared to the third quarter of 2025. Average noninterest-bearing deposits grew 4% annualized from the second quarter of 2026. For the nine months ended September 30, 2026, average total deposits increased $3.9 billion, or 31%, compared to the nine months ended September 30, 2025. The Company’s deposit mix remained favorable, with 86% of average deposit balances comprised of savings, money market, and demand deposits for the nine months ended September 30, 2026.

Average balances of sweep repurchase agreements with customers increased $8.5 million, or 2%, from the second quarter of 2026, and increased $128.7 million, or 57%, compared to the third quarter of 2025. The average rate on customer sweep repurchase accounts was 2.24% for the third quarter of 2026, compared to 2.20% for the second quarter of 2026, and 2.40% for the third quarter of 2025. For the nine months ended September 30, 2026, the average balance was $348.8 million, compared to an average balance of $203.9 million for the nine months ended September 30, 2025 with average rates of 2.20% and 2.58%, respectively.

The Company had an average balance of $862.1 million in FHLB and other borrowings outstanding for the third quarter of 2026, with an average interest rate of 3.83%, compared to $915.0 million for the second quarter of 2026, with an average interest rate of 3.77%, and $637.8 million for the third quarter of 2025, with an average interest rate of 4.17%. The Company had an average balance of $874.8 million in FHLB and other borrowings outstanding for the nine months ended September 30, 2026, with an average interest rate of 3.88%, compared to $582.6 million for the nine months ended September 30, 2025, with an average interest rate of 4.27%.

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Long-term debt balances averaged $112.9 million in both the third and second quarters of 2026, and $107.4 million in the third quarter of 2025. The average rate on long-term debt for the third quarter of 2026 was 6.40%, an increase of two basis points compared to the second quarter of 2026 and an increase of seven basis points compared to the third quarter of 2025. For the nine months ended September 30, 2026, long-term debt averaged $112.9 million, compared to $107.2 million for the nine months ended September 30, 2025. The average rate on long-term debt for the nine months ended September 30, 2026 was 6.40%, an increase of one basis point compared to the nine months ended September 30, 2025.

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The following tables detail the Company’s average balance sheets, interest income and expenses, and yields and rates1, for the periods presented:

		2026												2025
		Third Quarter						Second Quarter						Third Quarter
		Average				Yield/		Average				Yield/		Average				Yield/
(In thousands, except ratios)		Balance		Interest		Rate		Balance		Interest		Rate		Balance		Interest		Rate
Assets
Earning assets:
Securities:
Taxable	`	$	5,190,690	$	58,212	4.45	%	$	5,392,894	$	59,051	4.39	%	$	3,644,261	$	35,975	3.92	%
Nontaxable		327,915		4,719		5.71		330,322		4,727		5.74		6,752		54		3.17
Total Securities		5,518,605		62,931		4.52		5,723,216		63,778		4.47		3,651,013		36,029		3.92
Federal funds sold		168,287		1,577		3.72		292,952		2,622		3.59		258,779		2,896		4.44
Interest-bearing deposits with other banks and other investments		165,698		2,026		4.85		178,126		2,194		4.94		166,683		1,884		4.48
Total Loans, net		13,341,725		198,111		5.89		12,862,053		188,712		5.88		10,805,143		162,341		5.96
Total Earning Assets		19,194,315		264,645		5.47	%	19,056,347		257,306		5.42	%	14,881,618		203,150		5.42	%
ACL		(183,480)						(177,763)						(144,051)
Cash and due from banks		194,192						187,161						166,884
Premises and equipment, net		161,111						160,756						114,719
Intangible assets		1,208,953						1,214,829						827,294
BOLI		336,807						334,159						321,754
Other assets including DTAs		395,196						350,290						317,799
Total Assets		$	21,307,094					$	21,125,779					$	16,486,017
Liabilities, Convertible Preferred Stock & Shareholders' Equity
Interest-bearing liabilities:
Interest-bearing demand		$	3,807,997	$	10,059	1.05	%	$	3,976,446	$	11,108	1.12	%	$	2,671,750	$	10,623	1.58	%
Savings		977,608		1,536		0.62		976,058		1,300		0.53		617,479		1,111		0.71
Money market		5,220,359		33,900		2.58		5,124,668		31,793		2.49		4,362,662		31,393		2.85
Time deposits		2,541,031		21,650		3.38		2,324,117		18,663		3.22		1,826,068		16,341		3.55
Securities sold under agreements to repurchase		353,074		1,994		2.24		344,612		1,889		2.20		224,328		1,359		2.40
FHLB and other borrowings		862,109		8,331		3.83		915,000		8,608		3.77		637,826		6,703		4.17
Long-term debt, net and other		112,941		1,821		6.40		112,867		1,795		6.38		107,372		1,714		6.33
Total Interest-Bearing Liabilities		13,875,119		79,291		2.27	%	13,773,768		75,156		2.19	%	10,447,485		69,244		2.63	%
Noninterest demand		4,152,498						4,112,281						3,541,749
Other liabilities		208,520						164,252						151,550
Total Liabilities		18,236,137						18,050,301						14,140,784
Convertible preferred stock		343,125						343,125						—
Shareholders’ equity		2,727,832						2,732,353						2,345,233
Total Liabilities, Convertible Preferred Stock & Equity		$	21,307,094					$	21,125,779					$	16,486,017
Cost of deposits						1.60	%					1.53	%					1.81	%
Cost of funds2						1.74						1.69						1.96
Interest expense as a % of earning assets						1.64						1.58						1.85
Net interest income as a % of earning assets				$	185,354	3.83%				$	182,150	3.83%				$	133,906	3.57%
1On an FTE basis, a non-GAAP measure - see “Explanation of Certain Unaudited Non-GAAP Financial Measures” for more information and a reconciliation to GAAP. All yields and rates have been computed on an annual basis using amortized cost. Fees on loans have been included in interest on loans. Nonaccrual loans are included in loan balances.
2Total interest expense as a percentage of total interest-bearing liabilities and noninterest demand deposits.

	2026						2025
	Nine Months Ended September 30,						Nine Months Ended September 30,
	Average				Yield/		Average				Yield/
(In thousands, except ratios)	Balance		Interest		Rate		Balance		Interest		Rate
Assets
Earning assets:
Securities:
Taxable	$	5,313,350	$	173,842	4.37	%	$	3,362,823	$	97,835	3.89	%
Nontaxable	330,520		14,147		5.72		5,841		136		3.11
Total Securities	5,643,870		187,989		4.45		3,368,664		97,971		3.89
Federal funds sold	257,199		6,939		3.61		235,825		7,882		4.47
Interest-bearing deposits with other banks and other investments	177,487		6,364		4.79		136,760		4,858		4.75
Total Loans, net	12,960,775		573,049		5.91		10,584,090		470,812		5.95
Total Earning Assets	19,039,331		774,341		5.44	%	14,325,339		581,523		5.43	%
ACL	(180,248)						(141,285)
Cash and due from banks	187,380						159,428
Premises and equipment, net	161,789						110,548
Intangible assets	1,216,400						808,564
BOLI	334,184						314,700
Other assets including DTAs	361,829						320,985
Total Assets	$	21,120,665					$	15,898,279
Liabilities, Convertible Preferred Stock & Shareholders' Equity
Interest-bearing liabilities:
Interest-bearing demand	$	3,923,032	$	32,696	1.11	%	$	2,666,794	$	31,941	1.60	%
Savings	975,415		4,096		0.56		564,624		2,690		0.64
Money market	5,174,167		97,490		2.52		4,212,205		92,760		2.94
Time deposits	2,350,192		57,896		3.29		1,725,364		46,434		3.60
Securities sold under agreements to repurchase	348,772		5,736		2.20		203,943		3,930		2.58
FHLB and other borrowings	874,832		25,368		3.88		582,565		18,584		4.27
Long-term debt, net and other	112,876		5,401		6.40		107,207		5,126		6.39
Total Interest-Bearing Liabilities	13,759,286		228,683		2.22	%	10,062,702		201,465		2.68	%
Noninterest demand	4,093,867						3,413,252
Other liabilities	184,227						151,036
Total Liabilities	18,037,380						13,626,990
Convertible preferred stock	343,125						—
Shareholders' equity	2,740,160						2,271,289
Total Liabilities, Convertible Preferred Stock & Equity	$	21,120,665					$	15,898,279
Cost of deposits					1.56	%					1.85	%
Cost of funds2					1.71						2.00
Interest expense as a % of earning assets					1.61						1.88
Net interest income as a % of earning assets			$	545,658	3.83%				$	380,058	3.55%
1On an FTE basis, a non-GAAP measure - see "Explanation of Certain Unaudited Non-GAAP Financial Measures" for more information and a reconciliation to GAAP. All yields and rates have been computed on an annual basis using amortized cost. Fees on loans have been included in interest on loans. Nonaccrual loans are included in loan balances.
2Total interest expense as a percentage of total interest-bearing liabilities and noninterest demand deposits.

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Noninterest Income

Noninterest income totaled $31.6 million for the third quarter of 2026, an increase of $3.8 million, or 14%, compared to the second quarter of 2026, and an increase of $7.8 million, or 33%, compared to the third quarter of 2025. Noninterest income totaled $46.8 million for the nine months ended September 30, 2026, a decrease of $23.8 million, or 34%, compared to the nine months ended September 30, 2025.

Noninterest income is detailed as follows:

	Third		Second		Third		Nine Months Ended September 30,
	Quarter		Quarter		Quarter
(In thousands)	2026		2026		2025		2026		2025
Service charges on deposit accounts	$	7,088	$	7,045	$	6,194	$	21,045	$	16,914
Wealth management income	6,094		5,968		4,578		17,839		13,022
Mortgage banking income	4,739		2,744		517		9,649		1,606
Interchange income	2,258		2,093		2,008		6,418		5,710
Insurance agency income	1,847		1,336		1,481		4,973		4,390
BOLI income	2,647		2,609		3,875		7,873		9,723
Other	7,468		6,042		6,006		19,095		19,760
Total Noninterest Income Before Securities Losses, Net	32,141		27,837		24,659		86,892		71,125
Securities losses, net	(539)		(59)		(841)		(40,126)		(606)
Total	$	31,602	$	27,778	$	23,818	$	46,766	$	70,519

Service charges on deposits totaled $7.1 million in the third quarter of 2026, a nominal increase compared to the second quarter of 2026, and an increase of $0.9 million, or 14%, compared to the third quarter of 2025. For the nine months ended September 30, 2026, service charges on deposits totaled $21.0 million, an increase of $4.1 million, or 24%, compared to the nine months ended September 30, 2025. Year-over-year growth is primarily attributable to bank acquisitions in 2025 and growth in customer relationships.

Wealth management income, including trust fees and brokerage commissions and fees, was $6.1 million in the third quarter of 2026, an increase of $0.1 million, or 2%, from the second quarter of 2026 and an increase of $1.5 million, or 33%, compared to the third quarter of 2025. For the nine months ended September 30, 2026, wealth management income totaled $17.8 million, an increase of $4.8 million, or 37%, compared to the nine months ended September 30, 2025. The wealth management division has continued to deliver significant growth, driven by robust organic business development and continued asset inflows from existing relationships, with assets under management increasing $375.7 million, or 13%, from December 31, 2025, to $3.2 billion at September 30, 2026.

Mortgage banking income totaled $4.7 million, an increase of $2.0 million, or 73%, compared to the second quarter of 2026, with higher interest rates driving higher values on MSR, offsetting valuation declines from the first half of 2026. Comparisons to year-over-year periods are impacted by the October 2025 acquisition of VBI resulting in the addition of mortgage origination activity in The Villages communities.

Interchange income totaled $2.3 million, an increase of $0.2 million, or 8%, compared to the second quarter of 2026 and an increase of $0.3 million, or 12%, compared to the third quarter of 2025. For the nine months ended September 30, 2026, interchange income totaled $6.4 million, an increase of $0.7 million, or 12%, compared to the nine months ended September 30, 2025.

Insurance agency income totaled $1.8 million, an increase of $0.5 million, or 38%, compared to the second quarter of 2026 and an increase of $0.4 million, or 25%, compared to the third quarter of 2025. For the nine months ended September 30, 2026, insurance agency income totaled $5.0 million, an increase of $0.6 million, or 13%, compared to the nine months ended September 30, 2025. The increases reflect continued growth in the business, including a small agency acquisition completed in the third quarter of 2026.

BOLI income remained flat at $2.6 million for the third quarter of 2026 compared to the second quarter of 2026, and decreased $1.2 million, or 32%, compared to the third quarter of 2025. The third quarter of 2025 included death benefit payouts of $1.3 million. For the nine months ended September 30, 2026, BOLI income totaled $7.9 million, a decrease of $1.9 million, or 19%, compared to the nine months ended September 30, 2025.

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Other income was $7.5 million in the third quarter of 2026, an increase of $1.4 million, or 24%, compared to the second quarter of 2026 and an increase of $1.5 million, or 24%, compared to the third quarter of 2025. The third quarter of 2026 included higher swap and syndication fees, higher gains on SBA loan sales and higher unrealized gains on SBIC investments compared to the second quarter of 2026. For the nine months ended September 30, 2026, other income totaled $19.1 million, a decrease of $0.7 million, or 3%, compared to the nine months ended September 30, 2025.

Net securities activity resulted in losses of $0.5 million during the third quarter of 2026, compared to $0.1 million in the second quarter of 2026, and $0.8 million in the third quarter of 2025. For the nine months ended September 30, 2026 and 2025, net securities activity resulted in losses of $40.1 million and $0.6 million, respectively. The first quarter of 2026 included the strategic repositioning of a portion of the AFS securities portfolio.

Noninterest Expenses

Noninterest expense for the third quarter of 2026 totaled $133.3 million, an increase of $10.2 million, or 8%, compared to the second quarter of 2026, and an increase of $31.3 million, or 31%, from the third quarter of 2025. For the nine months ended September 30, 2026, noninterest expense totaled $378.6 million, an increase of $94.3 million, or 33%, compared to the nine months ended September 30, 2025. Seacoast continues to prudently manage expenses while strategically investing to support continued growth. Year-over-year increases reflect continued expansion of the footprint and growth in customers, including through bank acquisitions. Noninterest expenses are detailed as follows:

	Third		Second		Third		Nine Months Ended September 30,
	Quarter		Quarter		Quarter
(In thousands)	2026		2026		2025		2026		2025
Salaries and employee benefits	$	63,441	$	63,115	$	53,697	$	189,201	$	157,350
Outsourced data processing costs	12,465		12,242		9,337		36,702		26,366
Occupancy	9,385		9,591		7,627		28,211		22,460
Furniture and equipment	3,150		2,803		2,233		8,774		6,486
Marketing	3,515		3,525		2,509		10,507		8,215
Legal and professional fees	2,726		2,480		1,674		8,376		6,485
FDIC assessments	3,126		2,759		2,414		9,080		6,716
Amortization of intangibles	9,934		9,960		6,005		29,992		16,445
OREO expense and net loss (gain) on sale	497		85		(346)		645		(97)
Provision for credit losses on unfunded commitments	150		150		150		450		450
Merger and integration costs	15,506		8,358		10,808		32,400		14,281
Other	9,430		8,042		5,879		24,268		19,157
Total	$	133,325	$	123,110	$	101,987	$	378,606	$	284,314

Salaries and employee benefits totaled $63.4 million, an increase of $0.3 million, or 1%, from the second quarter of 2026, and an increase of $9.7 million, or 18%, from the third quarter of 2025. For the nine months ended September 30, 2026, salaries and employee benefits totaled $189.2 million, an increase of $31.9 million, or 20%, compared to the nine months ended September 30, 2025.

The Company utilizes third parties for its core data processing systems. Ongoing data processing costs are directly related to the number of transactions processed and the negotiated rates associated with those transactions. Outsourced data processing costs totaled $12.5 million, an increase of $0.2 million, or 2%, from the second quarter of 2026, and an increase of $3.1 million, or 34%, from the third quarter of 2025. For the nine months ended September 30, 2026, outsourced data processing costs totaled $36.7 million, an increase of $10.3 million, or 39%, compared to the nine months ended September 30, 2025.

Total occupancy and furniture and equipment expenses were $12.5 million, an increase of $0.1 million, or 1%, from the second quarter of 2026, and an increase of $2.7 million, or 27%, from the third quarter of 2025. For the nine months ended September 30, 2026, occupancy and furniture and equipment expenses totaled $37.0 million, an increase of $8.0 million, or 28%, compared to the nine months ended September 30, 2025.

Marketing expenses totaled $3.5 million, remaining flat from the second quarter of 2026, and increasing $1.0 million, or 40%, from the third quarter of 2025. For the nine months ended September 30, 2026, marketing expenses totaled $10.5 million, an increase of $2.3 million, or 28%, compared to the nine months ended September 30, 2025.

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Legal and professional fees for the third quarter of 2026 were $2.7 million, an increase of $0.2 million, or 10%, compared to the second quarter of 2026, and an increase of $1.1 million, or 63%, compared to the third quarter of 2025. For the nine months ended September 30, 2026, legal and professional fees totaled $8.4 million, an increase of $1.9 million, or 29%, compared to the nine months ended September 30, 2025.

Merger and integration costs were $15.5 million in the third quarter of 2026, $8.4 million in the second quarter of 2026, and $10.8 million in the third quarter of 2025. Having completed system integration activities in the third quarter of 2026 related to the VBI acquisition, the Company does not expect to incur significant additional merger and integration costs related to either the VBI or Heartland acquisitions. For the nine months ended September 30, 2026, merger and integration costs totaled $32.4 million compared to $14.3 million for the nine months ended September 30, 2025.

Provision for Credit Losses

The provision for credit losses was $6.3 million in the third quarter of 2026, $9.0 million in the second quarter of 2026, and $8.4 million in the third quarter of 2025. The acquisition of Heartland resulted in a day-one provision of $1.9 million in the third quarter of 2025. For the nine months ended September 30, 2026, the provision for credit losses was $16.1 million, compared to $22.0 million for the nine months ended September 30, 2025. See additional information in "ACL on Loans" in this report.

Income Taxes

For the third quarter of 2026, the Company recorded tax expense of $15.5 million, a decrease of $1.1 million, or 6%, compared to the second quarter of 2026 and an increase of $5.0 million, or 48%, compared to the third quarter of 2025. The effective tax rate for the third quarter of 2026 was 20.5%, compared to 21.7% in the second quarter of 2026 and 22.3% in the third quarter of 2025. For the nine months ended September 30, 2026, tax expense totaled $41.0 million, an increase of $8.6 million, or 26%, compared to the nine months ended September 30, 2025, with an effective tax rate of 21.3% for the nine months ended September 30, 2026, compared to 22.7% for the nine months ended September 30, 2025.

Explanation of Certain Unaudited Non-GAAP Financial Measures

This report contains financial information determined by methods other than GAAP. The financial highlights provide reconciliations between GAAP and adjusted financial measures including net income, FTE net interest income, noninterest income, noninterest expense, tax adjustments, net interest margin and other financial ratios. Management uses these non-GAAP financial measures in its analysis of the Company’s performance and believes these presentations provide useful supplemental information, and a clearer understanding of the Company’s performance. The Company believes the non-GAAP measures enhance investors’ understanding of the Company’s business and performance and if not provided would be requested by the investor community. These measures are also useful in understanding performance trends and facilitate comparisons with the performance of other financial institutions. The limitations associated with operating measures are the risk that persons might disagree as to the appropriateness of items comprising these measures and that different companies might define or calculate these measures differently. The Company provides reconciliations between GAAP and these non-GAAP measures. These disclosures should not be considered an alternative to GAAP.

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Reconciliation of Non-GAAP Measures

	Third			Second			Third			Nine Months Ended September 30,
	Quarter			Quarter			Quarter
(Amounts in thousands, except per share data)	2026			2026			2025			2026			2025
Net income	$	59,868		$	59,535		$	36,467		$	151,298		$	110,618
Total noninterest income	31,602			27,778			23,818			46,766			70,519
Securities losses, net	539			59			841			40,126			606
Total adjusted noninterest income	32,141			27,837			24,659			86,892			71,125
Total noninterest expense	133,325			123,110			101,987			378,606			284,314
Merger and integration costs	(15,506)			(8,358)			(10,808)			(32,400)			(14,281)
Adjusted noninterest expense	117,819			114,752			91,179			346,206			270,033
Income taxes	15,467			16,531			10,461			41,027			32,436
Tax effect of adjustments	4,067			2,133			2,952			18,382			3,773
Adjusted income taxes	19,534			18,664			13,413			59,409			36,209
Adjusted net income	71,846			65,819			45,164			205,442			121,732
Earnings per common share-diluted, as reported	0.55			0.55			0.42			1.39			1.28
Adjusted earnings per common share-diluted	$	0.66		$	0.61		$	0.52		$	1.89		$	1.41
Average common shares-diluted	97,237			97,250			87,425			97,487			86,154
Average preferred shares, treating all convertible preferred shares as common	11,250			11,250			—			11,250			—
Average common shares-diluted, treating all convertible preferred shares as common	108,487			108,500			87,425			108,737			86,154
Adjusted noninterest expense	$	117,819		$	114,752		$	91,179		$	346,206		$	270,033
Provision for credit losses on unfunded commitments	(150)			(150)			(150)			(450)			(450)
OREO expense and net (loss) gain on sale	(497)			(85)			346			(645)			97
Amortization of intangibles	(9,934)			(9,960)			(6,005)			(29,992)			(16,445)
Net adjusted noninterest expense	107,238			104,557			85,370			315,119			253,235
Average tangible assets	$	20,098,141		$	19,910,950		$	15,658,723		$	19,904,265		$	15,089,715
Net adjusted noninterest expense to average tangible assets	2.12		%	2.11		%	2.16		%	2.12		%	2.24		%
Net revenue	$	214,957		$	208,173		$	157,286		$	586,986		$	449,368
Total adjustments to net revenue	539			59			841			40,126			606
Impact of FTE adjustment	1,999			1,755			438			5,438			1,209
Adjusted net revenue on an FTE basis	$	217,495		$	209,987		$	158,565		$	632,550		$	451,183
Adjusted efficiency ratio	53.87		%	54.54		%	57.63		%	54.56		%	59.77		%

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	Third			Second			Third			Nine Months Ended September 30,
	Quarter			Quarter			Quarter
(Amounts in thousands, except per share data)	2026			2026			2025			2026			2025
Net interest income	$	183,355		$	180,395		$	133,468		$	540,220		$	378,849
Impact of FTE adjustment	1,999			1,755			438			5,438			1,209
Net interest income including FTE adjustment	185,354			182,150			133,906			545,658			380,058
Total noninterest income	31,602			27,778			23,818			46,766			70,519
Total noninterest expense less provision for credit losses on unfunded commitments	133,175			122,960			101,837			378,156			283,864
Pre-tax pre-provision earnings	83,781			86,968			55,887			214,268			166,713
Total adjustments to noninterest income	539			59			841			40,126			606
Total adjustments to noninterest expense including OREO expense and net (loss) gain on sale	16,003			8,443			10,462			33,045			14,184
Adjusted pre-tax pre-provision earnings	$	100,323		$	95,470		$	67,190		$	287,439		$	181,503
Average assets	21,307,094			21,125,779			16,486,017			21,120,665			15,898,279
Less average goodwill and intangible assets	(1,208,953)			(1,214,829)			(827,294)			(1,216,400)			(808,564)
Average tangible assets	$	20,098,141		$	19,910,950		$	15,658,723		$	19,904,265		$	15,089,715
ROA	1.11		%	1.13		%	0.88		%	0.96		%	0.93		%
Impact of other adjustments for adjusted net income	0.23			0.12			0.21			0.34			0.09
Adjusted ROA	1.34			1.25			1.09			1.30			1.02
ROE	8.71			8.74			6.17			7.38			6.51
Impact of other adjustments for adjusted net income	1.74			0.92			1.47			2.64			0.65
Adjusted ROE	10.45		%	9.66		%	7.64		%	10.02		%	7.17		%
Average shareholders’ equity	$	2,727,832		$	2,732,353		$	2,345,233		$	2,740,160		$	2,271,289
Average convertible preferred stock	343,125			343,125			—			343,125			—
Less average goodwill and intangible assets	(1,208,953)			(1,214,829)			(827,294)			(1,216,400)			(808,564)
Average tangible equity	$	1,862,004		$	1,860,649		$	1,517,939		$	1,866,885		$	1,462,725
ROE	8.71		%	8.74		%	6.17		%	7.38		%	6.51		%
Impact of adding convertible preferred stock and removing average intangible assets and related amortization	5.63			5.70			4.53			5.06			4.72
ROTE	14.34			14.44			10.70			12.44			11.23
Impact of other adjustments for adjusted net income	2.55			1.35			2.28			3.88			1.02
Adjusted ROTE	16.89		%	15.79		%	12.98		%	16.32		%	12.25		%
Loan interest income1	$	198,111		$	188,712		$	162,341		$	573,049		$	470,812
Accretion on acquired loans	(8,493)			(8,901)			(9,543)			(29,488)			(28,347)
Loan interest income excluding accretion on acquired loans1	$	189,618		$	179,811		$	152,798		$	543,561		$	442,465
Yield on loans1	5.89		%	5.88		%	5.96		%	5.91		%	5.95		%
Impact of accretion on acquired loans	(0.25)			(0.27)			(0.35)			(0.30)			(0.36)
Yield on loans excluding accretion on acquired loans1	5.64		%	5.61		%	5.61		%	5.61		%	5.59		%
Net interest income1	$	185,354		$	182,150		$	133,906		$	545,658		$	380,058
Accretion on acquired loans	(8,493)			(8,901)			(9,543)			(29,488)			(28,347)
Net interest income excluding accretion on acquired loans1	$	176,861		$	173,249		$	124,363		$	516,170		$	351,711

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	Third			Second			Third			Nine Months Ended September 30,
	Quarter			Quarter			Quarter
(Amounts in thousands, except per share data)	2026			2026			2025			2026			2025
Net interest margin1	3.83		%	3.83		%	3.57		%	3.83		%	3.55		%
Impact of accretion on acquired loans	(0.17)			(0.18)			(0.25)			(0.21)			(0.27)
Net interest margin excluding accretion on acquired loans1	3.66		%	3.65		%	3.32		%	3.62		%	3.28		%
Securities interest income1	$	62,931		$	63,778		$	36,029		$	187,989		$	97,971
FTE adjustment to securities	(1,202)			(1,204)			(10)			(3,595)			(25)
Securities interest income excluding FTE adjustment	61,729			62,574			36,019			184,394			97,946
Loan interest income1	198,111			188,712			162,341			573,049			470,812
FTE adjustment to loans	(797)			(551)			(428)			(1,843)			(1,184)
Loan interest income excluding FTE adjustment	197,314			188,161			161,913			571,206			469,628
Net interest income1	185,354			182,150			133,906			545,658			380,058
FTE adjustments to securities	(1,202)			(1,204)			(10)			(3,595)			(25)
FTE adjustments to loans	(797)			(551)			(428)			(1,843)			(1,184)
Net interest income excluding FTE adjustments	$	183,355		$	180,395		$	133,468		$	540,220		$	378,849
1On an FTE basis. All yields and rates have been computed using amortized cost.

Financial Condition

Total assets as of September 30, 2026 were $21.2 billion, an increase of $0.4 billion, or 2%, from December 31, 2025.

Securities

Information related to yields, maturities, carrying values, and fair value of the Company’s securities is set forth in “Note 3 – Securities” in this report.

At September 30, 2026, the Company had $4.6 billion in AFS securities and $553.0 million in HTM securities. The Company’s total debt securities portfolio decreased $563.4 million from December 31, 2025. During the first quarter of 2026, the Company repositioned a portion of its AFS securities portfolio. Securities with an average book yield of 1.9% were sold, resulting in a pre-tax loss of approximately $39.5 million. The proceeds of approximately $277.0 million were reinvested in primarily agency mortgage-backed securities with an average taxable equivalent book yield of 4.8%. During the third quarter of 2026, the Company sold $234.0 million of securities, recognizing nominal losses.

At September 30, 2026, AFS securities had gross unrealized losses of $349.8 million and gross unrealized gains of $1.1 million, compared to gross unrealized losses of $150.4 million and gross unrealized gains of $48.7 million at December 31, 2025. Seacoast’s AFS portfolio has an effective duration of approximately five years, and longer duration holdings saw a greater decline in value from higher market rates and wider spreads at September 30, 2026.

The credit quality of the Company’s securities holdings is strong. U.S. Treasury securities, obligations of U.S. government agencies, and obligations of U.S. government sponsored entities totaled $4.3 billion, or 83%, of the total portfolio at September 30, 2026, compared to 80% of the total portfolio at December 31, 2025. The AFS portfolio also includes $317.3 million in floating rate CLOs. CLOs are special purpose vehicles that purchase first lien broadly syndicated corporate loans while providing support to senior tranche investors. As of September 30, 2026, all of the Company’s CLOs were in AAA/AA tranches with weighted-average credit support of 28%. The Company utilizes credit models with assumptions of loan level defaults, recoveries, and prepayments to evaluate each security for potential credit losses. The result of this analysis did not indicate expected credit losses.

At September 30, 2026, the AFS portfolio also includes $591.6 million in investment grade bonds with a fair value of $554.5 million. At September 30, 2026, the Company has determined that all debt securities in an unrealized loss position are the result of both broad investment type spreads and the current interest rate environment. Management believes that each investment will recover any price depreciation over its holding period as the debt securities move to maturity, and management has the intent

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and ability to hold these investments to maturity if necessary. Therefore, at September 30, 2026, no allowance has been recorded.

HTM securities consist solely of mortgage-backed securities and collateralized mortgage obligations guaranteed by U.S. government-sponsored entities, each of which is expected to recover any price depreciation over its holding period as the debt securities move to maturity. The Company has significant liquidity and available borrowing capacity through other sources if needed and has the intent and ability to hold these investments to maturity.

Loan Portfolio

Loans, net of unearned income and excluding the ACL, were $13.6 billion at September 30, 2026, an increase of $946.2 million, or 7.5%, from December 31, 2025.

The Company remains committed to sound risk management practices. Portfolio diversification in terms of asset mix, industry, and loan type has been and continues to be an important element of the Company’s lending strategy. The average loan size is $478 thousand, and the average commercial loan size is $1.1 million at September 30, 2026, compared to $435 thousand and $942 thousand, respectively, at December 31, 2025, reflecting the Company’s longtime focus on granularity and on creating valuable customer relationships. Lending policies contain guardrails that pertain to lending by type of collateral and purpose, along with limits regarding loan concentrations and the principal amount of loans. The Company’s exposure to CRE lending remains well below regulatory limits (see “Loan Concentrations”).

The following tables detail loan portfolio composition at September 30, 2026 and December 31, 2025 for portfolio loans, PCD loans, and loans purchased which are not considered credit deteriorated (“Non-PCD”) as defined in “Note 4 - Loans”.

	September 30, 2026
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total		% to Total Loans
Construction and land development	$	890,170	$	56,285	$	533	$	946,988	7	%
CRE - owner occupied	1,748,659		408,552		19,837		2,177,048		16
CRE - non-owner occupied	3,303,295		1,010,223		171,761		4,485,279		34
Residential real estate	2,390,830		862,235		28,390		3,281,455		24
Commercial and financial	2,101,874		376,240		12,805		2,490,919		18
Consumer	150,398		41,820		304		192,522		1
Totals	$	10,585,226	$	2,755,355	$	233,630	$	13,574,211	100	%

	December 31, 2025
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total		% to Total Loans
Construction and land development	$	579,141	$	141,326	$	3,463	$	723,930	6	%
CRE - owner occupied	1,505,798		509,118		28,709		2,043,625		16
CRE - non-owner occupied	2,911,189		1,193,351		150,452		4,254,992		34
Residential real estate	2,101,868		963,836		33,155		3,098,859		25
Commercial and financial	1,828,038		476,130		16,821		2,320,989		18
Consumer	141,768		43,321		500		185,589		1
Totals	$	9,067,802	$	3,327,082	$	233,100	$	12,627,984	100	%

The amortized cost basis of loans included net deferred costs of $48.3 million at September 30, 2026 and $46.3 million at December 31, 2025. At September 30, 2026, the remaining fair value adjustments on acquired loans were $120.8 million, or 3.9% of the outstanding acquired loan balances, compared to $150.0 million, or 4.0% of the acquired loan balances at December 31, 2025. The net discount is accreted into interest income over the remaining lives of the related loans on a level yield basis.

Construction and land development loans increased $223.1 million, or 31%, totaling $947.0 million at September 30, 2026, compared to December 31, 2025. These loans, extended to both commercial and consumer customers, are collateralized by and for the purpose of funding land development and construction projects. Repayment is from the proceeds of the sale, refinancing,

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or permanent financing of the property. The increase reflects a combination of new originations, largely associated with commercial retail and industrial projects, and additional fundings on existing commercial projects.

CRE owner occupied loans totaled $2.2 billion at September 30, 2026, an increase of $133.4 million, or 7% compared to December 31, 2025. CRE owner occupied loans are extended to commercial customers for the purpose of acquiring or refinancing real estate to be occupied by the borrower's business. These loans are collateralized by the subject property and the repayment of these loans is largely dependent on the performance of the company occupying the property.

CRE non-owner occupied loans increased $230.3 million, or 5%, to $4.5 billion at September 30, 2026, from $4.3 billion at December 31, 2025. Non-owner occupied CRE loans are collateralized by properties where the source of repayment is typically from the sale or lease of the property. Within the non-owner occupied CRE portfolio, the largest segment is retail properties, which totaled approximately $1.5 billion at September 30, 2026, with an average loan size of $2.9 million. This segment targets grocery or credit tenant-anchored shopping plazas, single credit tenant retail buildings, smaller outparcels, and other small retail units. The second-largest segment in the non-owner occupied CRE portfolio is industrial or warehouse properties, which totaled $963.9 million at September 30, 2026, with an average loan size of $3.5 million, reflecting continued demand for logistics, distribution, and manufacturing space. Non-owner occupied CRE portfolio loans collateralized by office properties totaled $570.0 million at September 30, 2026, with an average loan size of $1.8 million. This segment targets low to mid-rise suburban offices and is broadly diversified across many types of professional services, with limited exposure to central business districts. Other non-owner occupied CRE loans include $519.9 million collateralized by multi-family residential properties, $230.0 million collateralized by hotels or motels, and $673.0 million collateralized by other property types, including restaurants, schools and recreation centers.

Residential real estate loans increased $182.6 million, or 6%, to $3.3 billion during the nine months ended September 30, 2026. Included in the balance as of September 30, 2026, were $1.4 billion of fixed rate mortgages, $1.1 billion of ARMs, and $763.5 million in home equity loans and HELOCs, compared to $1.3 billion, $1.1 billion, and $743.2 million, respectively, at December 31, 2025. Substantially all residential mortgage originations have been underwritten to conventional loan agency standards, including loan balances that exceed agency value limitations. The average LTV of our HELOC portfolio is 60%, with 34% of the loans being in first lien position at September 30, 2026, compared to an average LTV of 58%, with 35% of the portfolio being in the first lien position at December 31, 2025.

Commercial and financial loans increased $169.9 million, or 7%, from December 31, 2025, totaling $2.5 billion at September 30, 2026. The purpose of these loans may be to provide working capital, asset acquisition or for other business purposes, and are generally supported by projected cash flows of the business, collateralized by business assets, and/or guaranteed by the business owners. The Company continues to exercise a disciplined approach to lending and is benefiting from the investments made in recent years to attract talent from large regional banks across its markets. This talent is onboarding significant new relationships, resulting in increased loan production.

The Company also provides consumer loans, which include installment loans, auto loans, marine loans, and other consumer loans, which increased $6.9 million, or 4%, to total $192.5 million at September 30, 2026, compared to $185.6 million at December 31, 2025.

Loan Concentrations

The Company has developed guardrails to manage loan types that are most impacted by stressed market conditions to minimize credit risk concentration to capital. Outstanding balances for commercial and CRE loan relationships greater than $10 million totaled $4.8 billion, representing 35% of the total portfolio at September 30, 2026, compared to $3.5 billion, or 28%, at December 31, 2025. The Company’s ten largest commercial and CRE funded and unfunded relationships at September 30, 2026 aggregated to $646.1 million, of which $518.9 million was funded, compared to $607.4 million at December 31, 2025, of which $518.4 million was funded.

Concentrations in construction and land development loans and CRE loans are maintained well below regulatory guidelines. Construction and land development and CRE loan concentrations as a percentage of subsidiary bank total risk-based capital were 45% and 250%, respectively, at September 30, 2026, compared to 35% and 224%, respectively, at December 31, 2025. Regulatory guidance suggests limits of 100% and 300%, respectively. On a consolidated basis, construction and land development and CRE loans represent 41% and 227%, respectively, of total consolidated risk-based capital as of September 30, 2026, compared to 33% and 211%, respectively, at December 31, 2025. To determine these ratios, the Company defines CRE in accordance with the guidance on “Concentrations in Commercial Real Estate Lending” (the “Guidance”) issued by the federal bank regulatory agencies in 2006 (and reinforced in 2015), which defines CRE loans as exposures secured by land development and construction, including 1-4 family residential construction, multi-family property, and non-farm nonresidential property where the primary or a significant source of repayment is derived from rental income associated with

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the property (i.e., loans for which 50 percent or more of the source of repayment comes from third party, non-affiliated, rental income) or the proceeds of the sale, refinancing, or permanent financing of the property. Loans to REITs and unsecured loans to developers that closely correlate to the inherent risks in CRE markets would also be considered CRE loans under the Guidance. Loans on owner-occupied CRE are generally excluded. In addition, the Company is subject to a geographic concentration of credit because it primarily operates in Florida.

Nonperforming Loans, TBMs, OREO and Credit Quality

NPAs at September 30, 2026 totaled $76.5 million, and were comprised of $73.3 million of nonaccrual loans and $3.3 million of OREO. Overall, NPAs increased $0.3 million, from $76.3 million as of December 31, 2025. NPAs to total assets at September 30, 2026 decreased to 0.36% from 0.37% at December 31, 2025.

Compared to December 31, 2025, nonaccrual loans increased $1.3 million to $73.3 million, and remain low as a percentage of total loans, at 0.54% at September 30, 2026. Approximately 83% of nonaccrual loans at September 30, 2026 were secured with real estate. A significant portion of nonaccrual loans have collateral values well in excess of balances outstanding, and therefore, no loss is expected.

The tables below set forth details related to nonaccrual loans.

	September 30, 2026
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	471	$	1,311	$	1,782
CRE - owner occupied	7,191		6,050		13,241
CRE - non-owner occupied	16,753		1,360		18,113
Residential real estate	10,287		17,081		27,368
Commercial and financial	6,655		4,281		10,936
Consumer	1,449		394		1,843
Totals	$	42,806	$	30,477	$	73,283

	December 31, 2025
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	4,207	$	1,812	$	6,019
CRE - owner occupied	15,546		5,120		20,666
CRE - non-owner occupied	18,202		1,173		19,375
Residential real estate	1,448		10,654		12,102
Commercial and financial	3,842		7,209		11,051
Consumer	—		2,788		2,788
Totals	$	43,245	$	28,756	$	72,001

In accordance with regulatory reporting requirements, loans are placed on nonaccrual following the Retail Classification of Loan interagency guidance. The accrual of interest is generally discontinued on loans that become 90 days past due as to principal or interest unless collection of both principal and interest is assured by way of collateralization, guarantees or other security. Consumer loans that become 120 days past due are generally charged off. The loan carrying value is analyzed and any changes are appropriately made quarterly, as described above.

In certain circumstances, the Company provides modifications of loans to borrowers experiencing financial difficulty, which the Company refers to as TBMs. Loans that were modified as TBMs during the three and nine months ended September 30, 2026 are described in “Note 4 - Loans”.

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ACL on Loans

Management establishes the allowance using relevant available information from both internal and external sources, relating to past events, current economic conditions, and reasonable and supportable forecasts. The forecasts of future economic conditions are over a period that has been deemed reasonable and supportable, and in segments where it can no longer develop reasonable and supportable forecasts, the Company reverts to longer-term historical loss experience to estimate losses over the remaining life of the loans. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments.

The Company recorded provision expense of $6.3 million and $16.1 million, respectively, for the three and nine months ended September 30, 2026, compared to $8.4 million and $22.0 million, respectively, for the three and nine months ended September 30, 2025. The Company recorded net charge-offs of $5.4 million and $11.9 million, respectively, in the three and nine months ended September 30, 2026, compared to $3.2 million and $12.7 million, respectively, for the three and nine months ended September 30, 2025.

During the third quarter of 2026, the Company recorded an $8.4 million measurement period adjustment related to an acquired loan that was determined to meet the definition of PCD as of the acquisition date. The measurement period adjustment increased the ACL on acquired PCD loans by $8.4 million based on facts and circumstances that existed at the acquisition date.

The ratio of ACL to total loans was 1.41% at September 30, 2026, 1.42% at December 31, 2025, and 1.34% at September 30, 2025.

Cash and Cash Equivalents and Liquidity Risk Management

Liquidity risk involves the risk of being unable to fund assets with the appropriate duration and rate-based liability, as well as the risk of not being able to meet unexpected cash needs. Liquidity planning and management are necessary to ensure the ability to fund operations cost effectively and to meet current and future potential obligations such as loan commitments and unexpected deposit outflows.

Funding sources primarily include customer-based deposits, collateral-backed borrowings, brokered deposits, cash flows from operations, cash flows from the loan and investment portfolios and asset sales, primarily secondary marketing for residential real estate mortgages. Cash flows from operations are a significant component of liquidity risk management and the Company considers both deposit maturities and the scheduled cash flows from loan and investment maturities and payments when managing risk.

Cash and cash equivalents, including interest-bearing deposits, totaled $303.2 million at September 30, 2026, compared to $388.5 million at December 31, 2025.

Deposits are a primary source of liquidity. The stability of this funding source is affected by numerous factors, including returns available to customers on alternative investments, the quality of customer service levels, perception of safety and competitive forces. Uninsured deposits represented approximately 36% of total deposits at September 30, 2026 compared to 37% at December 31, 2025. This includes public funds under the Florida Qualified Public Depository program, which provides loss protection to depositors beyond FDIC insurance limits. Excluding such balances, the uninsured and uncollateralized deposits were 32% of total deposits at September 30, 2026. The Company has liquidity sources as discussed below, including cash and lines of credit with the FRB and FHLB, that represent 148% of uninsured deposits, and 165% of uninsured and uncollateralized deposits.

In addition to $303.2 million in cash and cash equivalents at September 30, 2026, the Company had $8.5 billion in available borrowing capacity, including $5.3 billion in available collateralized lines of credit, $2.8 billion of unpledged debt securities available as collateral for potential additional borrowings, and available unsecured lines of credit of $348.0 million. The Company may also access funding by acquiring brokered deposits. Brokered deposits at September 30, 2026 totaled $452.6 million, compared to $120.9 million at December 31, 2025.

Contractual maturities for assets and liabilities are reviewed to meet current and expected future liquidity requirements. Sources of liquidity are maintained through a portfolio of high-quality marketable assets, such as residential mortgage loans, debt securities AFS, and interest-bearing deposits. The Company is also able to provide short-term financing of its activities by selling, under an agreement to repurchase, United States Treasury and Government agency debt securities not pledged to secure public deposits or trust funds.

The Company has traditionally relied upon dividends from Seacoast Bank and securities offerings to provide funds to pay the Company’s expenses and to service the Company’s debt. During the third quarter of 2026, Seacoast Bank distributed $110.4

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million to the Company. At September 30, 2026, the Company had cash and cash equivalents at the parent of approximately $186.8 million, compared to $98.1 million at December 31, 2025.

Deposits and Borrowings

Customer relationship funding is detailed in the following table for the periods specified:

(In thousands)	September 30, 2026		December 31, 2025
Noninterest demand	$	4,191,935	$	3,897,985
Interest-bearing demand	3,719,536		3,993,225
Money market	5,210,770		5,141,519
Savings	978,269		974,694
Time deposits	2,027,039		2,128,055
Brokered time certificates	452,610		120,865
Total deposits	$	16,580,159	$	16,256,343
Securities sold under agreements to repurchase	316,766		389,003
Total customer funding1	$	16,444,315	$	16,524,481
1Total deposits and securities sold under agreements to repurchase, excluding brokered deposits. Securities sold under agreements to repurchase consists of customer sweep accounts.

The Company benefits from a diverse and granular deposit base that serves as a significant source of strength. Total deposits increased $323.8 million, or 3% annualized, to $16.6 billion at September 30, 2026, when compared to December 31, 2025.

Customer repurchase agreements totaled $316.8 million at September 30, 2026, decreasing $72.2 million, or 19%, from December 31, 2025. Repurchase agreements are offered by Seacoast to select customers who wish to sweep excess balances on a daily basis for investment purposes.

At September 30, 2026 and December 31, 2025, long-term debt included $73.0 million and $72.8 million, respectively, related to trust preferred securities issued by trusts organized or acquired by the Company. At September 30, 2026, the average interest rate in effect on our outstanding subordinated debt related to trust preferred securities was 5.96%, compared to 5.77% at December 31, 2025. All trust preferred securities are guaranteed by the Company on a junior subordinated basis. Other long-term debt at September 30, 2026 totaled $40.0 million and included financing obligations associated with branch properties and subordinated debt acquired through a bank acquisition.

FHLB advances and other borrowings totaled $985.0 million at September 30, 2026 with a weighted-average interest rate of 3.99%, compared to advances outstanding of $835.0 million at December 31, 2025 with a weighted-average interest rate of 3.82%.

Off-Balance Sheet Transactions

In the normal course of business, the Company may engage in a variety of financial transactions that, under GAAP, either are not recorded on the balance sheet or are recorded on the balance sheet in amounts that differ from the full contract or notional amounts. These transactions involve varying elements of market, credit and liquidity risk.

Lending commitments include unfunded loan commitments and standby and commercial letters of credit. For loan commitments, the contractual amount of a commitment represents the maximum potential credit risk that could result if the entire commitment had been funded, the borrower had not performed according to the terms of the contract, and no collateral had been provided. A large majority of loan commitments and standby letters of credit expire without being funded, and accordingly, total contractual amounts are not representative of actual future credit exposure or liquidity requirements. Loan commitments and letters of credit expose the Company to credit risk in the event that the customer draws on the commitment and subsequently fails to perform under the terms of the lending agreement.

For commercial customers, loan commitments generally take the form of revolving credit arrangements. For retail customers, loan commitments generally are lines of credit secured by residential property. These instruments are not recorded on the balance sheet until funds are advanced under the commitment. Unfunded commitments to extend credit were $3.8 billion at September 30, 2026 and $3.5 billion at December 31, 2025.

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In the normal course of business, the Company and Seacoast Bank enter into agreements, or are subject to regulatory agreements that result in cash, debt and dividend restrictions. A summary of the most restrictive items follows:

Seacoast Bank may be required to maintain reserve balances with the FRB. There was no reserve requirement at September 30, 2026 or December 31, 2025.

Under FRB regulation, Seacoast Bank is limited as to the amount it may loan to its affiliates, including the Company, unless such loans are collateralized by specified obligations. At September 30, 2026, the maximum amount available for transfer from Seacoast Bank to the Company in the form of loans approximated $268.4 million, if the Company has sufficient acceptable collateral. There were no loans made to affiliates during the nine months ended September 30, 2026.

Capital Resources

The Company’s equity capital at September 30, 2026 decreased $116.9 million, or 4%, from December 31, 2025 to $2.6 billion. Changes in equity included decreases in AOCI, the issuance of cash dividends on common and preferred stock, and the repurchase of common stock, partially offset by increases from net income.

In conjunction with the acquisition of VBI on October 1, 2025, the Company issued non-voting convertible preferred stock, and each 1/1000th of a share of preferred stock is convertible into one share of Seacoast common stock, subject to certain restrictions. Holders of preferred stock are entitled to receive ratable dividends when dividends are concurrently declared and payable on the shares of Seacoast common stock. See "Note 11 – Business Combinations," for further detail. The convertible preferred stock at September 30, 2026 totaled $343.1 million.

Activity in shareholders’ equity for the nine months ended September 30, 2026 and 2025 follows:

(In thousands)	Nine Months Ended September 30, 2026		Nine Months Ended September 30, 2025
Balance at beginning of period	$	2,712,662	$	2,183,243
Net income	151,298		110,618
Stock-based compensation expense	16,209		11,445
Common stock transactions related to stock-based employee benefit plans	493		(1,289)
Issuance of common stock and conversion of options pursuant to acquisition	—		54,547
Repurchase of common stock	(39,509)		—
Dividends on common stock ($0.57 per share and $0.54 per share, respectively)	(56,019)		(46,876)
Dividends on preferred stock ($0.57 per 1/1000th share)	(6,414)		—
Change in AOCI	(182,972)		66,444
Balance at end of period	$	2,595,748	$	2,378,132

Capital ratios are well above regulatory requirements for well-capitalized institutions. Management’s use of risk-based capital ratios in its analysis of the Company’s capital adequacy are not GAAP financial measures. Seacoast’s management uses these measures to assess the quality of capital and believes that investors may find it useful in their analysis of the Company. The capital measures are not necessarily comparable to similar capital measures that may be presented by other companies and Seacoast does not nor should investors consider such non-GAAP financial measures in isolation from, or as a substitute for GAAP financial information (see “Note 8 – Regulatory Capital”).

September 30, 2026	Seacoast (Consolidated)	Seacoast Bank	Minimum to be Well- Capitalized1
Total Risk-Based Capital Ratio	15.47%	14.05%	10.00%
Tier 1 Capital Ratio	14.08	12.82	8.00
CET1 Ratio	11.33	12.82	6.50
Leverage Ratio	10.46	9.51	5.00
1For subsidiary bank only.

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The Company and Seacoast Bank are subject to various general regulatory policies and requirements relating to the payment of dividends, including requirements to maintain adequate capital above regulatory minimums. The appropriate federal bank regulatory authority may prohibit the payment of dividends where it has determined that the payment of dividends would be an unsafe or unsound practice. The Company is a legal entity separate and distinct from Seacoast Bank and its other subsidiaries, and the Company’s primary source of cash and liquidity, other than securities offerings and borrowings, is dividends from its bank subsidiary. Without OCC approval, Seacoast Bank can pay $40.1 million of dividends to the Company.

The OCC and the Federal Reserve have policies that encourage banks and BHCs to pay dividends from current earnings, and have the general authority to limit the dividends paid by national banks and BHCs, respectively, if such payment may be deemed to constitute an unsafe or unsound practice. If, in the particular circumstances, either of these federal regulators determined that the payment of dividends would constitute an unsafe or unsound banking practice, either the OCC or the Federal Reserve may, among other things, issue a cease and desist order prohibiting the payment of dividends by Seacoast Bank or us, respectively. The board of directors of a BHC must consider different factors to ensure that its dividend level, if any, is prudent relative to the organization’s financial position and is not based on overly optimistic earnings scenarios such as any potential events that may occur before the payment date that could affect its ability to pay, while still maintaining a strong financial position. As a general matter, the FRB has indicated that the board of directors of a BHC, such as Seacoast, should consult with the FRB and eliminate, defer, or significantly reduce the BHC’s dividends if: (i) its net income available to shareholders for the past four quarters, net of dividends previously paid during that period, is not sufficient to fully fund the dividends; (ii) its prospective rate of earnings retention is not consistent with its capital needs and overall current and prospective financial condition; or (iii) it will not meet, or is in danger of not meeting, its minimum regulatory capital adequacy ratios.

The Company has paid quarterly dividends to the holders of its common stock since the second quarter of 2021. Whether the Company continues to pay quarterly dividends and the amount of any such dividends will be at the discretion of the Company’s Board of Directors and will depend on the Company’s earnings, financial condition, results of operations, business prospects, capital requirements, regulatory restrictions, and other factors that the Board of Directors may deem relevant.

The Company has seven wholly owned trust subsidiaries that have issued trust preferred stock. Trust preferred securities from acquisitions were recorded at fair value when acquired. All trust preferred securities are guaranteed by the Company on a junior subordinated basis. The Company believes its trust preferred securities qualify as Tier 1 capital under FRB’s regulatory capital rules. A phase out period begins in June 2027, at which time the trust preferred securities will transition to Tier 2 capital over a three year period.

On March 19, 2026, U.S. banking regulators requested comments on three proposals to modernize the regulatory capital framework for banks of all sizes. The proposals are intended to streamline capital requirements and better align regulatory capital with risk while maintaining the safety and soundness of the banking system. The comment period for all three proposals ended on June 18, 2026. The Company continues to evaluate the potential impact of the proposals and monitor regulatory developments, including any final rulemaking and implementation timelines.

Critical Accounting Policies and Estimates

The Company’s critical accounting policies are discussed in the Management’s Discussion and Analysis of Financial Condition and Results of Operations in Seacoast’s Annual Report on Form 10-K for the year ended December 31, 2025. Significant accounting policies are discussed in “Note 1 – Significant Accounting Policies” in Form 10-K for the year ended December 31, 2025. Disclosures regarding the effects of new accounting pronouncements are included in “Note 1 – Basis of Presentation” in this report. There have been no changes to the Company’s critical accounting policies during 2026.

Interest Rate Sensitivity

Fluctuations in interest rates may result in changes in the fair value of the Company’s financial instruments, cash flows and net interest income. This risk is managed using simulation modeling to calculate the most likely interest rate risk. The objective is to optimize the Company’s financial position, liquidity, and net interest income while limiting volatility.

Senior management regularly reviews the overall interest rate risk position and evaluates strategies to manage the risk. The Company uses simulation analysis to monitor changes in net interest income due to changes in market interest rates. The simulation of rising, declining and flat interest rate scenarios allows management to monitor and adjust balance sheet exposures to assess the impact of market interest rate swings. The analysis of the impact on net interest income is subjected to instantaneous changes in market rates and is monitored at least quarterly.

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The following table presents the ALCO simulation model’s projected impact of a change in interest rates on the net interest income for the 12 and 24 month periods beginning October 1, 2026, holding all balances on the balance sheet static. It is important to note that the results in the table below assume parallel shifts in the yield curve and do not take into account changes in the yield curve slope nor changes in balance sheet size or mix.

	% Change in Projected Baseline
	Net Interest Income
	September 30, 2026
Change in Interest Rates	1-12 months	13-24 months
+3.00%	(3.5)%	2.5%
+2.00%	(1.4)%	2.6%
+1.00%	(0.3)%	1.6%
Current	—%	—%
-1.00%	1.9%	0.1%
-2.00%	4.2%	0.2%
-3.00%	5.7%	(1.1%)

The computations of interest rate risk do not necessarily include certain actions management may undertake to manage this risk in response to changes in interest rates. Management may adjust asset or liability pricing or structure in order to manage interest rate risk through an economic cycle. This may include the use of investment portfolio purchases or sales or the use of derivative financial instruments, such as interest rate swaps, options, caps, floors, futures or forward contracts.

Effects of Inflation and Changing Prices

The consolidated statements and related financial data presented herein have been prepared in accordance with U.S. GAAP, which require the measurement of financial position and operating results in terms of historical dollars, without considering changes in the relative purchasing power of money, over time, due to inflation.

Unlike most industrial companies, virtually all of the assets and liabilities of a financial institution are monetary in nature. As a result, interest rates have a more significant impact on a financial institution’s performance than the general level of inflation. However, inflation affects financial institutions by increasing their cost of goods and services purchased, as well as the cost of salaries and benefits, occupancy expense, and similar items. Inflation and related increases in interest rates generally decrease the market value of investments and loans held and may adversely affect liquidity, earnings, and shareholders’ equity. Mortgage origination and refinancing tends to slow as interest rates increase, and higher interest rates likely will reduce the Company’s earnings from such activities and the income from the sale of residential mortgage loans in the secondary market. A decline in interest rates would generally have the opposite impact.

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See also Management’s discussion and analysis “Interest Rate Sensitivity.”

Market risk refers to potential losses arising from changes in interest rates, and other relevant market rates or prices.

Interest rate risk, defined as the exposure of net interest income and EVE to adverse movements in interest rates, is the Company’s primary market risk, and mainly arises from the structure of the balance sheet (non-trading activities). The Company is also exposed to market risk in its investing activities. The ALCO meets regularly and is responsible for reviewing the interest rate sensitivity position of the Company and establishing policies to monitor and limit exposure to interest rate risk. The policies established by the ALCO are reviewed and approved by the Company’s board of directors. The primary goal of interest rate risk management is to control exposure to interest rate risk, within policy limits approved by the board of directors. These limits reflect the Company’s tolerance for interest rate risk over short-term and long-term horizons.

The Company also performs valuation analyses, which are used for evaluating levels of risk present in the balance sheet that might not be taken into account in the net interest income simulation analyses. Whereas net interest income simulation highlights exposures over a relatively short time horizon, valuation analysis incorporates all cash flows over the estimated remaining life of all balance sheet positions. The valuation of the balance sheet, at a point in time, is defined as the discounted present value of asset cash flows minus the discounted value of liability cash flows, the net result of which is the EVE. The

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sensitivity of EVE to changes in the level of interest rates is a measure of the longer-term re-pricing risks and options risks embedded in the balance sheet. Similar to net interest income simulation, EVE uses instantaneous changes in rates. Results of both net interest income simulation and EVE analyses are sensitive to changes in key modeling assumptions.

EVE values only the current balance sheet and does not incorporate the reinvestment assumptions that are used in the net interest income simulation model. As with the net interest income simulation model, assumptions about the timing and variability of balance sheet cash flows are critical in the EVE analysis. Particularly important are the assumptions driving prepayments and the expected changes in balances and pricing of the indeterminate maturity deposit portfolios. Stable deposits are a more significant funding source for the Company, making the estimated lives attached to stable deposits more important to the accuracy of our EVE modeling. The Company periodically reassesses its assumptions regarding the indeterminate lives of core deposits utilizing an independent third-party resource to assist.

The following table presents the projected impact of a change in interest rates on the balance sheet. This change in interest rates assumes parallel shifts in the yield curve and does not take into account changes in the slope of the yield curve.

Change in Interest Rates	% Change in
	Economic Value of
	Equity
+3.00%	(18.8)%
+2.00%	(11.7)%
+1.00%	(5.3)%
Current	—%
-1.00%	4.6%
-2.00%	9.3%
-3.00%	12.5%

While an instantaneous and severe shift in interest rates is used in this analysis, a gradual shift in interest rates would have a much more modest impact. Since EVE measures the discounted present value of cash flows over the estimated lives of instruments, the change in EVE does not directly correlate to the degree that earnings would be impacted over a shorter time horizon, i.e., the next fiscal year. Further, EVE does not consider factors such as future balance sheet growth, changes in product mix, change in yield curve relationships, and changing product spreads that could mitigate the adverse impact of changes in interest rates.

Item 4. CONTROLS AND PROCEDURES

The Company’s management, with the participation of its chief executive officer and chief financial officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) and Rule 15d-15(e) under the Exchange Act) as of September 30, 2026 and concluded that those disclosure controls and procedures are effective.

During the quarter ended September 30, 2026, there have been no changes in internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, internal control over financial reporting.

Part II. OTHER INFORMATION

Item 1. Legal Proceedings

The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial position, or operating results or cash flows.

Item 1A. Risk Factors

In addition to the other information set forth in this report, you should consider the factors discussed in “Part I, Item 1A. Risk Factors” in our report on Form 10-K for the year ended December 31, 2025, which could materially affect our business,

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financial condition and prospective results. The risks described in this report, in our Form 10-K or our other SEC filings are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or future results. There have been no material changes with respect to the risk factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2025.

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Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

During the three months ended September 30, 2026, the Company repurchased shares of its common stock as indicated in the following table:

Period	Total Number of Shares Purchased1	Average Price Paid Per Share		Total Number of Shares Purchased as part of Public Announced Plan	Maximum Value of Shares that May Yet be Purchased Under the Plan (in thousands)
7/1/26 to 7/31/26	7,525	$	33.77	—	$	117,000
8/1/26 to 8/31/26	—	34.54		37,771	115,696
9/1/26 to 9/30/26	—	32.48		154,299	110,684
Total - 3rd Quarter	7,525	32.92		192,070	$	110,684
1Includes shares that were repurchased to pay for the exercise of stock options or for income taxes owed on vesting shares of restricted stock. These shares were not purchased under the Company’s stock repurchase plan to repurchase shares.

On December 19, 2025, the Company’s Board of Directors authorized the renewal of the Company’s share repurchase program, under which the Company may, from time to time, purchase up to $150 million of its shares of outstanding common stock. Under the share repurchase program, which will expire on December 31, 2026, repurchases will be made, if at all, in accordance with applicable securities laws and may be made from time to time in the open market, by block purchase or by negotiated transactions. The amount and timing of repurchases, if any, will be based on a variety of factors, including share acquisition price, regulatory limitations, market conditions and other factors. The program does not obligate the Company to purchase any of its shares, and may be terminated or amended by the Board of Directors at any time prior to its expiration date.

192,070 shares and 1,261,378 shares, respectively, of the Company’s common stock were repurchased under the program during the three and nine months ended September 30, 2026.

Item 3. Defaults upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

Trading arrangements

There were no Rule 10b5-1 or non-Rule 10b5-1 trading arrangements adopted, modified or terminated by any director or officer of the Company during the three months ended September 30, 2026.

Item 6. Exhibits

Exhibit 2.1. Agreement and Plan of Merger dated February 27, 2025 by and among the Company, Seacoast National Bank, Heartland Bancshares, Inc. and Heartland National Bank incorporated herein by reference from Exhibit 2.1 to the Company’s Form 8-K, filed March 5, 2025.

Exhibit 2.2. Agreement and Plan of Merger dated May 29, 2025 by and among the Company, Seacoast National Bank, Villages Bancorporation, Inc. and Citizens First Bank incorporated herein by reference from Exhibit 2.1 to the Company’s Form 8-K, filed May 29, 2025.

Exhibit 3.1.1 Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q, filed May 10, 2006.

Exhibit 3.1.2 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed December 23, 2008.

63

Exhibit 3.1.3 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.4 to the Company’s Form S-1, filed June 22, 2009.

Exhibit 3.1.4 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed July 20, 2009.

Exhibit 3.1.5 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed December 3, 2009.

Exhibit 3.1.6 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K/A, filed July 14, 2010.

Exhibit 3.1.7 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed June 25, 2010.

Exhibit 3.1.8 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed June 1, 2011.

Exhibit 3.1.9 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed December 13, 2013.

Exhibit 3.1.10 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed May 30, 2018.

Exhibit 3.1.11 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed May 23, 2023.

Exhibit 3.1.12 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed May 22, 2025.

Exhibit 3.1.13 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K filed May 20, 2026

Exhibit 3.1.14 Certificate of Designations of the Series A Non-Voting Preferred Stock of Seacoast Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed October 6, 2025.

Exhibit 3.2 Amended and Restated By-laws of the Company Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed October 26, 2020.

Exhibit 31.1 Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.2 Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 32.1 Statement of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

64

Exhibit 32.2 Statement of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Exhibit 101

The following materials from Seacoast Banking Corporation of Florida’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2026 formatted in Inline XBRL: (i) the Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash Flows, (v) the Consolidated Statements of Shareholders’ Equity and (vi) the Notes to the Consolidated Financial Statements, tagged as blocks of text and including detailed tags.

Exhibit 104

The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2026, formatted in Inline XBRL.

65

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

SEACOAST BANKING CORPORATION OF FLORIDA

November 4, 2026	/s/ Charles M. Shaffer
	Charles M. Shaffer
	Chairman and Chief Executive Officer

November 4, 2026	/s/ Tracey L. Dexter
	Tracey L. Dexter
	Executive Vice President and Chief Financial Officer

66

EX-31.1

EXHIBIT 31.1

Certification Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Charles M. Shaffer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Seacoast Banking Corporation of Florida;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 4, 2026	/s/ Charles M. Shaffer
	Charles M. Shaffer
	Chairman and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

Certification Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Tracey L. Dexter, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Seacoast Banking Corporation of Florida;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 4, 2026	/s/ Tracey L. Dexter
	Tracey L. Dexter
	Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

STATEMENT OF CHIEF EXECUTIVE OFFICER OF

SEACOAST BANKING CORPORATION OF FLORIDA

PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Seacoast Banking Corporation of Florida (“Company”) for the period ended September 30, 2026 (“Report”), I, Charles M. Shaffer, Chairman and Chief Executive Officer of the Company, do hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of The Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 4, 2026	/s/ Charles M. Shaffer
	Charles M. Shaffer
	Chairman and Chief Executive Officer

EX-32.2

EXHIBIT 32.2

STATEMENT OF CHIEF FINANCIAL OFFICER OF

SEACOAST BANKING CORPORATION OF FLORIDA

PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Seacoast Banking Corporation of Florida (“Company”) for the period ended September 30, 2026 (“Report”), I, Tracey L. Dexter, Executive Vice President and Chief Financial Officer of the Company, do hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of The Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 4, 2026	/s/ Tracey L. Dexter
	Tracey L. Dexter
	Executive Vice President and Chief Financial Officer

XML

Cover Page - shares	9 Months Ended
	Sep. 30, 2026	Oct. 15, 2026
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2026
Document Transition Report	false
Entity File Number	0-13660
Entity Registrant Name	Seacoast Banking Corporation of Florida
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-2260678
Entity Address, Address Line One	815 Colorado Avenue,
Entity Address, City or Town	Stuart
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	34994
City Area Code	(772)
Local Phone Number	287-4000
Title of 12(b) Security	Common Stock, $0.10 Par Value
Trading Symbol	SBCF
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		96,482,082
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000730708
Current Fiscal Year End Date	--12-31

XML

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Income Statement [Abstract]
Interest and fees on loans	$ 197,314	$ 161,913	$ 571,206	$ 469,628
Interest and dividends on securities	61,729	36,019	184,394	97,946
Interest on interest-bearing deposits and other investments	3,603	4,780	13,303	12,740
Total Interest Income	262,646	202,712	768,903	580,314
Interest on deposits	45,495	43,133	134,282	127,392
Interest on time certificates	21,650	16,341	57,896	46,434
Interest on borrowed money	12,146	9,770	36,505	27,639
Total Interest Expense	79,291	69,244	228,683	201,465
Net Interest Income	183,355	133,468	540,220	378,849
Provision for credit losses	6,297	8,371	16,055	22,000
Net Interest Income after Provision for Credit Losses	177,058	125,097	524,165	356,849
Noninterest income:
Service charges on deposit accounts	7,088	6,194	21,045	16,914
Wealth management income	6,094	4,578	17,839	13,022
Mortgage banking income	4,739	517	9,649	1,606
Interchange income	2,258	2,008	6,418	5,710
Insurance agency income	1,847	1,481	4,973	4,390
BOLI income	2,647	3,875	7,873	9,723
Other	7,468	6,006	19,095	19,760
Total Noninterest Income Before Securities (Losses) Gains, Net	32,141	24,659	86,892	71,125
Securities losses, net	(539)	(841)	(40,126)	(606)
Total Noninterest Income	31,602	23,818	46,766	70,519
Noninterest expense:
Salaries and employee benefits	63,441	53,697	189,201	157,350
Outsourced data processing costs	12,465	9,337	36,702	26,366
Occupancy	9,385	7,627	28,211	22,460
Furniture and equipment	3,150	2,233	8,774	6,486
Marketing	3,515	2,509	10,507	8,215
Legal and professional fees	2,726	1,674	8,376	6,485
FDIC assessments	3,126	2,414	9,080	6,716
Amortization of intangibles	9,934	6,005	29,992	16,445
OREO expense and net loss (gain) on sale	497	(346)	645	(97)
Provision for credit losses on unfunded commitments	150	150	450	450
Merger and integration costs	15,506	10,808	32,400	14,281
Other	9,430	5,879	24,268	19,157
Total Noninterest Expense	133,325	101,987	378,606	284,314
Income Before Income Taxes	75,335	46,928	192,325	143,054
Provision for income tax expense	15,467	10,461	41,027	32,436
Net Income	59,868	36,467	151,298	110,618
Preferred dividends	2,138	0	6,414	0
Net income available to common shareholders	$ 57,730	$ 36,467	$ 144,884	$ 110,618
Net income per share of common stock
Diluted (in dollars per share)	$ 0.55	$ 0.42	$ 1.39	$ 1.28
Basic (in dollars per share)	$ 0.56	$ 0.42	$ 1.40	$ 1.30
Average common shares outstanding
Diluted (in shares)	97,237	87,425	97,487	86,154
Basic (in shares)	96,269	86,619	96,514	85,398

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net Income	$ 59,868	$ 36,467	$ 151,298	$ 110,618
Other comprehensive (loss) income:
Unrealized (losses) gains on AFS securities, net of tax benefit of $56.9 million and $69.0 million, respectively, for the three and nine months ended September 30, 2026 and net of tax expense of $8.4 million and $20.9 million, respectively, for the three and nine months ended September 30, 2025	(180,038)	26,184	(217,410)	65,738
Amortization of unrealized gains on securities transferred to HTM, net of nominal tax benefit in each period for the three and nine months ended September 30, 2026 and 2025	(11)	(11)	(32)	(32)
Reclassification adjustment for losses included in net income, net of tax benefit of $3 thousand and $10.0 million, respectively, for the three and nine months ended September 30, 2026, and net of tax benefit of $0.2 million for each of the three and nine months ended September 30, 2025	6	711	29,457	711
Unrealized gains on derivatives designated as fair value hedges, net of reclassifications to income, net of nominal tax expense for the nine months ended September 30, 2025	0	0	0	27
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications to income, net of tax expense of $1.3 million and $1.7 million, respectively, for the three and nine months ended September 30, 2026	3,946	0	5,013	0
Total other comprehensive (loss) income	(176,097)	26,884	(182,972)	66,444
Comprehensive (Loss) Income	$ (116,229)	$ 63,351	$ (31,674)	$ 177,062

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Unrealized (losses) gains on AFS securities, tax expense (benefit)	$ (56,900)	$ 8,400	$ (69,000)	$ 20,900
Reclassification adjustment for losses included in net income, tax benefit	3	$ 200	10,000	$ 200
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications to income, tax expense	$ 1,300		$ 1,700

XML

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Assets
Cash and due from banks	$ 188,512	$ 181,429
Interest-bearing deposits with other banks	114,733	207,116
Total cash and cash equivalents	303,245	388,545
Time deposits with other banks	498	14,424
Debt securities:
Securities AFS (at fair value)	4,634,355	5,164,567
Securities HTM (fair value $435.3 million at September 30, 2026 and $489.6 million at December 31, 2025)	552,982	586,178
Total debt securities	5,187,337	5,750,745
Loans held for sale	14,462	16,297
Loans	13,574,211	12,627,984
ACL	(191,355)	(178,803)
Loans, net of ACL	13,382,856	12,449,181
Bank premises and equipment, net	159,202	160,139
Goodwill	1,045,014	1,034,735
Other intangible assets, net	170,202	195,704
BOLI	338,431	330,563
Net DTAs	123,056	66,579
Other assets	469,063	435,419
Total Assets	21,193,366	20,842,331
Liabilities
Deposits	16,580,159	16,256,343
Securities sold under agreements to repurchase	316,766	389,003
FHLB and other borrowings	985,000	835,000
Long-term debt, net	112,985	112,761
Other liabilities	259,583	193,437
Total Liabilities	18,254,493	17,786,544
Convertible preferred stock, par value $0.10 per share, authorized 4,000,000 shares, issued 11,250 and outstanding 11,250 shares at September 30, 2026 and December 31, 2025	343,125	343,125
Shareholders’ Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 98,882,451 and outstanding 96,734,422 at September 30, 2026, and authorized 120,000,000, issued 98,728,878 and outstanding 97,927,843 shares at December 31, 2025	9,888	9,873
Additional paid-in capital	2,216,867	2,197,549
Retained earnings	692,658	603,793
Treasury stock	(63,498)	(21,358)
Total Shareholders' Equity Before Accumulated Other Comprehensive Loss, Net	2,855,915	2,789,857
Accumulated other comprehensive loss, net	(260,167)	(77,195)
Total Shareholders’ Equity	2,595,748	2,712,662
Total Liabilities, Convertible Preferred Stock and Shareholders’ Equity	$ 21,193,366	$ 20,842,331

XML

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Held to maturity, fair value	$ 435,311	$ 489,560
Temporary equity, par value (in dollars per share)	$ 0.10	$ 0.10
Temporary equity, shares authorized (in shares)	4,000,000	4,000,000
Temporary equity, shares issued (in shares)	11,250	11,250
Temporary equity, shares outstanding (in shares)	11,250	11,250
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	98,882,451	98,728,878
Common stock, shares outstanding (in shares)	96,734,422	97,927,843

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2026	Sep. 30, 2025
Cash Flows from Operating Activities
Net income		$ 151,298	$ 110,618
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		8,723	6,715
Accretion of discounts on securities, net		(14,018)	(3,858)
Amortization of operating lease ROUAs		7,805	6,793
Other amortization and accretion, net		13,535	2,224
Stock-based compensation		16,209	11,445
Origination of loans designated for sale		(191,183)	(75,987)
Sale of loans designated for sale		199,577	86,383
Provision for credit losses		16,055	22,000
Deferred income taxes		3,038	7,174
Losses on securities		40,126	606
Gains on sale of loans		(6,282)	(4,067)
Losses (gains) on sale and write-downs of bank premises, equipment and OREO		272	(8)
Changes in operating assets and liabilities:
Net increase in other assets		(36,987)	(37,432)
Net increase in other liabilities		63,994	942
Net cash provided by operating activities		272,162	133,548
Cash Flows from Investing Activities
Maturities and repayments of debt securities AFS		494,954	369,197
Maturities and repayments of debt securities HTM		33,072	36,460
Proceeds from sale of debt securities AFS		511,140	265,524
Purchases of debt securities AFS		(748,160)	(1,171,727)
Maturities and redemptions of time deposits with other banks		13,926	2,219
Net new loans and principal repayments		(961,369)	(528,685)
Proceeds from the sale of loans held for investment		17,486	19,110
Proceeds from sale of OREO		989	2,960
Proceeds from sale of FHLB and Federal Reserve Bank stock		80,999	31,118
Purchase of FHLB and Federal Reserve Bank stock		(89,385)	(55,185)
Proceeds from BOLI death benefit		0	2,294
Net cash from acquisitions		(3,800)	185,995
Additions to bank premises and equipment		(7,637)	(7,149)
Net cash used in investing activities		(657,785)	(847,869)
Cash Flows from Financing Activities
Net increase in deposits		323,816	142,697
Net (decrease) increase in repurchase agreements		(72,237)	4,176
Net increase of FHLB and other borrowings with original maturities of three months or less		225,000	100,000
Repayments of FHLB and other borrowings with original maturities of more than three months		(735,000)	(105,000)
Proceeds from FHLB and other borrowings with original maturities of more than three months		660,000	450,000
Stock-based employee benefit plans		493	(1,289)
Repurchase of common stock		(39,316)	0
Dividends paid		(62,433)	(46,876)
Net cash provided by financing activities		300,323	543,708
Net decrease in cash and cash equivalents		(85,300)	(170,613)
Cash and cash equivalents at beginning of period		388,545	476,607
Cash and cash equivalents at end of period		303,245	305,994
Supplemental disclosure of cash flow information:
Cash paid for interest		231,455	205,578
Cash paid for taxes, net		32,835	10,380
Recognition of operating lease ROUAs, other than through bank acquisitions, net of terminations		5,851	9,372
Recognition of operating lease liabilities, other than through bank acquisitions, net of terminations		5,905	9,372
Supplemental disclosure of non-cash investing activities:
Transfers from loans to OREO	[1]	$ 176	$ 1,116

[1] 1See "Note 11 – Business Combinations" for non-cash transactions related to business combinations.

XML

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS’ EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2024	0
Beginning balance at Dec. 31, 2024	$ 0
Ending balance (in shares) at Sep. 30, 2025	0
Ending balance at Sep. 30, 2025	$ 0
Beginning balance (in shares) at Dec. 31, 2024		85,568,000
Beginning balance at Dec. 31, 2024	2,183,243	$ 8,628	$ 1,824,935	$ 526,642	$ (19,095)	$ (157,867)
Shareholders' Equity
Comprehensive income (loss)	177,062			110,618		66,444
Stock-based compensation expense	11,445		11,445
Common stock transactions related to stock-based employee benefit plans (in shares)		426,000
Common stock transactions related to stock-based employee benefit plans	(1,289)	$ 50	370		(1,709)
Dividends on common stock	(46,876)			(46,876)
Issuance of common stock, pursuant to acquisition (in shares)		1,862,000
Issuance of common stock, pursuant to acquisition	54,547	$ 186	54,361
Increase (decrease) in shares during period (in shares)		2,288,000
Increase (decrease) in stockholders' equity during period	194,889	$ 236	66,176	63,742	(1,709)	66,444
Ending balance (in shares) at Sep. 30, 2025		87,856,000
Ending balance at Sep. 30, 2025	$ 2,378,132	$ 8,864	1,891,111	590,384	(20,804)	(91,423)
Beginning balance (in shares) at Jun. 30, 2025	0
Beginning balance at Jun. 30, 2025	$ 0
Ending balance (in shares) at Sep. 30, 2025	0
Ending balance at Sep. 30, 2025	$ 0
Beginning balance (in shares) at Jun. 30, 2025		85,948,000
Beginning balance at Jun. 30, 2025	2,271,565	$ 8,673	1,832,158	569,833	(20,792)	(118,307)
Shareholders' Equity
Comprehensive income (loss)	63,351			36,467		26,884
Stock-based compensation expense	4,448		4,448
Common stock transactions related to stock-based employee benefit plans (in shares)		46,000
Common stock transactions related to stock-based employee benefit plans	137	$ 5	144		(12)
Dividends on common stock	(15,916)			(15,916)
Issuance of common stock, pursuant to acquisition (in shares)		1,862,000
Issuance of common stock, pursuant to acquisition	54,547	$ 186	54,361
Increase (decrease) in shares during period (in shares)		1,908,000
Increase (decrease) in stockholders' equity during period	106,567	$ 191	58,953	20,551	(12)	26,884
Ending balance (in shares) at Sep. 30, 2025		87,856,000
Ending balance at Sep. 30, 2025	$ 2,378,132	$ 8,864	1,891,111	590,384	(20,804)	(91,423)
Beginning balance (in shares) at Dec. 31, 2025	11,250
Beginning balance at Dec. 31, 2025	$ 343,125
Ending balance (in shares) at Sep. 30, 2026	11,250
Ending balance at Sep. 30, 2026	$ 343,125
Beginning balance (in shares) at Dec. 31, 2025	97,927,843	97,928,000
Beginning balance at Dec. 31, 2025	$ 2,712,662	$ 9,873	2,197,549	603,793	(21,358)	(77,195)
Shareholders' Equity
Comprehensive income (loss)	(31,674)			151,298		(182,972)
Stock-based compensation expense	16,209		16,209
Common stock transactions related to stock-based employee benefit plans (in shares)		69,000
Common stock transactions related to stock-based employee benefit plans	493	$ 15	3,109		(2,631)
Repurchase of common stock (in shares)		(1,263,000)
Repurchase of common stock	(39,509)				(39,509)
Dividends on common stock	(56,019)			(56,019)
Dividends on preferred stock	(6,414)			(6,414)
Increase (decrease) in shares during period (in shares)		(1,194,000)
Increase (decrease) in stockholders' equity during period	$ (116,914)	$ 15	19,318	88,865	(42,140)	(182,972)
Ending balance (in shares) at Sep. 30, 2026	96,734,422	96,734,000
Ending balance at Sep. 30, 2026	$ 2,595,748	$ 9,888	2,216,867	692,658	(63,498)	(260,167)
Beginning balance (in shares) at Jun. 30, 2026	11,000
Beginning balance at Jun. 30, 2026	$ 343,125
Ending balance (in shares) at Sep. 30, 2026	11,250
Ending balance at Sep. 30, 2026	$ 343,125
Beginning balance (in shares) at Jun. 30, 2026		96,823,000
Beginning balance at Jun. 30, 2026	2,730,805	$ 9,878	2,208,511	653,623	(57,137)	(84,070)
Shareholders' Equity
Comprehensive income (loss)	(116,229)			59,868		(176,097)
Stock-based compensation expense	6,209		6,209
Common stock transactions related to stock-based employee benefit plans (in shares)		104,000
Common stock transactions related to stock-based employee benefit plans	2,141	$ 10	2,147		(16)
Repurchase of common stock (in shares)		(193,000)
Repurchase of common stock	(6,345)				(6,345)
Dividends on common stock	(18,695)			(18,695)
Dividends on preferred stock	(2,138)			(2,138)
Increase (decrease) in shares during period (in shares)		(89,000)
Increase (decrease) in stockholders' equity during period	$ (135,057)	$ 10	8,356	39,035	(6,361)	(176,097)
Ending balance (in shares) at Sep. 30, 2026	96,734,422	96,734,000
Ending balance at Sep. 30, 2026	$ 2,595,748	$ 9,888	$ 2,216,867	$ 692,658	$ (63,498)	$ (260,167)

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CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS’ EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 0.19	$ 0.18	$ 0.57	$ 0.54
Dividends on preferred stock (in dollars per 1000th share)	$ 0.19		$ 0.57

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Basis of Presentation

9 Months Ended

Sep. 30, 2026

Accounting Policies [Abstract]

Basis of Presentation

Note 1 – Basis of Presentation

Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, the financial statements do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.

Operating results for the three and nine months ended September 30, 2026, are not necessarily indicative of the results that may be expected for the year ending December 31, 2026, or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the ACL, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements.

Issued Accounting Standards Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, Expense Disaggregation Disclosures. ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.

In November 2025, the FASB issued ASU 2025-08, Credit Losses (Topic 326): Purchased Loans. ASU 2025-08 requires that purchased seasoned loans be accounted for using the gross-up approach. The gross-up approach requires recognition of an ACL for the estimate of credit losses at the acquisition date. The ACL is recorded with an offsetting gross-up adjustment to the purchase price of the acquired financial asset. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods within those annual reporting periods. Early adoption is permitted. The Company is evaluating the date of adoption and the impact of the changes to its consolidated financial statements and existing disclosures.

In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements. ASU 2025-09 introduces five targeted improvements to better align hedge accounting with entities’ risk management activities. The standard is effective for fiscal years beginning after December 15, 2026, and for interim periods within those annual reporting periods. Early adoption is permitted. The Company is evaluating the impact of the changes to its consolidated financial statements and existing disclosures.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements. ASU 2025-11 clarifies interim disclosure requirements and provides a comprehensive list of interim disclosures that are required by GAAP. The ASU also includes a disclosure principle that requires entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. The standard is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its consolidated financial statements and existing disclosures.

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Earnings per Share

9 Months Ended

Sep. 30, 2026

Earnings Per Share [Abstract]

Earnings per Share

Note 2 – Earnings per Share

The Company computes EPS using the two-class method. The two-class method of computing EPS is an earnings allocation formula that determines EPS for common stock and any participating securities according to dividends declared and participation rights in undistributed earnings. The Company's Series A Non-Voting Convertible Preferred Stock is a participating security. Basic EPS is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during each period. Diluted EPS is based on the weighted-average number of common shares outstanding during each period, plus common share equivalents, calculated for share-based awards outstanding using the treasury stock method and preferred shares using the more dilutive of either the two-class or if-converted method.

For each of the three and nine month periods ended September 30, 2026, options to purchase 1,505 shares of the Company's common stock were anti-dilutive. Options to purchase shares of the Company’s common stock totaling 144,826 and 327,859, respectively, for the three and nine months ended September 30, 2025, were anti-dilutive.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Basic EPS
Net income	$	59,868	$	36,467	$	151,298	$	110,618
Less preferred stock dividends	(2,138)		—		(6,414)		—
Net income available to common shareholders	57,730		36,467		144,884		110,618
Less allocation of earnings to preferred stock	(4,126)		—		(9,388)		—
Net income available to common shareholders after allocation of earnings to preferred stock	$	53,604	$	36,467	$	135,496	$	110,618
Average common shares outstanding	96,269		86,619		96,514		85,398
Net income per share	$	0.56	$	0.42	$	1.40	$	1.30
Diluted EPS
Net income available to common shareholders	$	57,730	$	36,467	$	144,884	$	110,618
Less allocation of earnings to preferred stock	(4,089)		—		(9,304)		—
Net income available to common shareholders after allocation of earnings to preferred stock	$	53,641	$	36,467	$	135,580	$	110,618
Average common shares outstanding	96,269		86,619		96,514		85,398
Add: Dilutive effect of employee restricted stock and stock options	968		806		973		756
Average diluted shares outstanding	97,237		87,425		97,487		86,154
Net income per share	$	0.55	$	0.42	$	1.39	$	1.28

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Securities

9 Months Ended

Sep. 30, 2026

Investments, Debt and Equity Securities [Abstract]

Securities

Note 3 – Securities

The amortized cost, gross unrealized gains and losses and fair value of debt securities AFS and HTM at September 30, 2026 and December 31, 2025 are summarized as follows:

	September 30, 2026
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	60,756	$	8	$	(2,702)	$	58,062
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,728,834		195		(297,828)		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	284,625		207		(11,177)		273,655
Private mortgage-backed securities and collateralized mortgage obligations	81,000		108		(6,590)		74,518
CLOs	317,266		508		(858)		316,916
Obligations of state and political subdivisions	333,779		—		(23,647)		310,132
Other debt securities	176,779		52		(6,960)		169,871
Totals	$	4,983,039	$	1,078	$	(349,762)	$	4,634,355
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	466,721	$	—	$	(109,805)	$	356,916
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		—		(7,866)		78,395
Totals	$	552,982	$	—	$	(117,671)	$	435,311

	December 31, 2025
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	54,831	$	365	$	(451)	$	54,745
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,681,499		41,388		(135,388)		3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	395,165		4,636		(5,928)		393,873
Private mortgage-backed securities and collateralized mortgage obligations	131,846		561		(5,010)		127,397
CLOs	423,864		636		(512)		423,988
Obligations of state and political subdivisions	336,417		651		(2,520)		334,548
Other debt securities	242,672		421		(576)		242,517
Totals	$	5,266,294	$	48,658	$	(150,385)	$	5,164,567
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	498,931	$	—	$	(90,696)	$	408,235
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	87,247		—		(5,922)		81,325
Totals	$	586,178	$	—	$	(96,618)	$	489,560

During the three and nine months ended September 30, 2026, debt securities with fair values of $234.0 million and $511.1 million, respectively, were sold, with gross losses of $0.1 million and $39.6 million, respectively. During the three months ended September 30, 2025, debt securities with a fair value of $245.7 million assumed in the acquisition of Heartland were sold. No gain or loss was recognized on the sale. During the three and nine months ended September 30, 2025, there were $19.8 million in other sales of securities, with gross losses of $1.0 million. Included in “Securities losses, net” on the Consolidated Statements of Income are decreases of $0.5 million and $0.7 million, respectively, for the three and nine months ended September 30, 2026, and increases of $0.1 million and $0.4 million, respectively, for the three and nine months ended September 30, 2025 in the value of investments in mutual funds that invest in CRA-qualified debt securities.

At September 30, 2026, debt securities with a fair value of $2.2 billion were pledged primarily as collateral for public deposits and secured borrowings.

The amortized cost and fair value of securities HTM and AFS as of September 30, 2026, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held-to-Maturity				Available-for-Sale
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	—	$	—	$	6,265	$	6,260
Due after one year through five years	—		—		2,993		2,921
Due after five years through ten years	—		—		50,352		46,655
Due after ten years	—		—		334,925		312,358
	—		—		394,535		368,194
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	466,721		356,916		3,728,834		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		78,395		284,625		273,655
Private mortgage-backed securities and collateralized mortgage obligations	—		—		81,000		74,518
CLOs	—		—		317,266		316,916
Other debt securities	—		—		176,779		169,871
Totals	$	552,982	$	435,311	$	4,983,039	$	4,634,355

The estimated fair value of a security is determined based on market quotations, when available, or, if not available, by using quoted market prices for similar securities, pricing models, or discounted cash flow analyses, or using observable market data. The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded. Information pertaining to our securities with gross unrealized losses at September 30, 2026 and December 31, 2025, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss positions is as follows:

	September 30, 2026
	Less Than 12 Months				12 Months or Longer				Total1
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. government agencies	$	46,460	$	(2,252)	$	8,732	$	(450)	$	55,192	$	(2,702)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	2,995,789		(182,019)		398,717		(115,809)		3,394,506		(297,828)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	150,581		(4,669)		68,196		(6,508)		218,777		(11,177)
Private mortgage-backed securities and collateralized mortgage obligations	7,924		(231)		63,609		(6,359)		71,533		(6,590)
CLOs	194,479		(627)		46,960		(231)		241,439		(858)
Obligations of state and political subdivisions	304,841		(22,133)		5,291		(1,514)		310,132		(23,647)
Other debt securities	153,813		(6,960)		—		—		153,813		(6,960)
Totals	$	3,853,887	$	(218,891)	$	591,505	$	(130,871)	$	4,445,392	$	(349,762)
1Comprised of 661 individual securities.

	December 31, 2025
	Less Than 12 Months				12 Months or Longer				Total1
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. government agencies	$	21,846	$	(31)	$	13,932	$	(420)	$	35,778	$	(451)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	378,739		(1,625)		730,551		(133,763)		1,109,290		(135,388)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	90,765		(61)		95,090		(5,867)		185,855		(5,928)
Private mortgage-backed securities and collateralized mortgage obligations	969		(1)		76,829		(5,009)		77,798		(5,010)
CLOs	211,052		(320)		38,882		(192)		249,934		(512)
Obligations of state and political subdivisions	244,168		(1,445)		5,730		(1,075)		249,898		(2,520)
Other debt securities	132,345		(576)		—		—		132,345		(576)
Totals	$	1,079,884	$	(4,059)	$	961,014	$	(146,326)	$	2,040,898	$	(150,385)
1Comprised of 383 individual securities.

At September 30, 2026, the Company had unrealized losses of $2.7 million on U.S. Treasury securities and obligations of U.S. government agencies having a fair value of $55.2 million. These securities are either explicitly or implicitly guaranteed by the full faith and credit of the U.S. government. The Company does not expect individual securities issued by the U.S. Treasury, a U.S. agency, or a sponsored U.S. agency to incur future losses of principal. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and

interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had unrealized losses of $309.0 million on commercial and residential mortgage-backed securities and collateralized mortgage obligations issued by government-sponsored entities having a fair value of $3.6 billion. These securities are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments and the high credit rating of the portfolio provide a sufficient basis for the current expectation that there is no risk of loss if default were to occur. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had $6.6 million of unrealized losses on private label residential mortgage-backed securities and collateralized mortgage obligations having a fair value of $71.5 million. All positions held have weighted-average credit support of 22%. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had $0.9 million of unrealized losses in floating rate CLOs having a fair value of $241.4 million. CLOs are special purpose vehicles and those in which the Company has invested are nearly all first-lien, broadly syndicated corporate loans across a diversified band of industries while providing support to senior tranche investors. As of September 30, 2026, all positions held by the Company are in AAA and AA tranches, with weighted-average credit support of 37% and 23%, respectively. The Company evaluates the securities for potential credit losses by modeling expected loan-level defaults, recoveries, and prepayments for each CLO security. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2026, no allowance has been recorded.

At September 30, 2026, the Company had $23.6 million of unrealized losses on municipal securities having a fair value of $310.1 million and $7.0 million of unrealized losses on other debt securities having a fair value of $153.8 million. These securities are highly rated issuances, all of which are continuing to make timely contractual payments. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality and expects to recover the entire amortized cost basis of these securities. As a result, as of September 30, 2026, no allowance has been recorded.

All HTM debt securities are issued by government-sponsored entities, which are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments, and the high credit rating of the HTM portfolio provide sufficient basis for the current expectation that there is no risk of loss if a default were to occur. As a result, as of September 30, 2026, no allowance has been recorded. The Company has the intent and ability to hold these securities until maturity.

Included in Other assets at September 30, 2026 and December 31, 2025 is $143.9 million and $135.6 million, respectively, of FHLB and Federal Reserve Bank stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Accrued interest receivable on AFS and HTM debt securities of $22.5 million and $0.9 million, respectively, at September 30, 2026, and $24.5 million and $1.0 million, respectively, at December 31, 2025, is included in Other assets. Also included in Other assets are investments in CRA-qualified mutual funds carried at fair value of $13.3 million and $13.9 million at September 30, 2026 and December 31, 2025, respectively.

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Loans

9 Months Ended

Sep. 30, 2026

Receivables [Abstract]

Loans

Note 4 – Loans

The following tables present net loan balances by segment for portfolio loans, PCD loans and loans purchased which are not considered purchased credit deteriorated (“Non-PCD”) as of:

	September 30, 2026
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total
Construction and land development	$	890,170	$	56,285	$	533	$	946,988
CRE - owner occupied	1,748,659		408,552		19,837		2,177,048
CRE - non-owner occupied	3,303,295		1,010,223		171,761		4,485,279
Residential real estate	2,390,830		862,235		28,390		3,281,455
Commercial and financial	2,101,874		376,240		12,805		2,490,919
Consumer	150,398		41,820		304		192,522
Totals	$	10,585,226	$	2,755,355	$	233,630	$	13,574,211

	December 31, 2025
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total
Construction and land development	$	579,141	$	141,326	$	3,463	$	723,930
CRE - owner occupied	1,505,798		509,118		28,709		2,043,625
CRE - non-owner occupied	2,911,189		1,193,351		150,452		4,254,992
Residential real estate	2,101,868		963,836		33,155		3,098,859
Commercial and financial	1,828,038		476,130		16,821		2,320,989
Consumer	141,768		43,321		500		185,589
Totals	$	9,067,802	$	3,327,082	$	233,100	$	12,627,984

The amortized cost basis of loans included net deferred costs of $48.3 million at September 30, 2026 and $46.3 million at December 31, 2025. At September 30, 2026, the remaining fair value adjustments on acquired loans were $120.8 million, or 3.9% of the outstanding acquired loan balances, compared to $150.0 million, or 4.0% of the acquired loan balances at December 31, 2025. The net discount is accreted into interest income over the remaining lives of the related loans on a level yield basis.

Accrued interest receivable is included within Other assets and was $50.1 million and $45.7 million at September 30, 2026 and December 31, 2025, respectively.

The following tables present the status of net loan balances as of September 30, 2026 and December 31, 2025.

	September 30, 2026
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
Portfolio Loans
Construction and land development	$	889,348	$	79	$	—	$	—	$	743	$	890,170
CRE - owner occupied	1,735,842		2,219		—		—		10,598		1,748,659
CRE - non-owner occupied	3,299,558		3,262		475		—		—		3,303,295
Residential real estate	2,368,819		4,682		1,046		—		16,283		2,390,830
Commercial and financial	2,082,207		5,908		57		3,533		10,169		2,101,874
Consumer	149,284		722		79		—		313		150,398
Total Portfolio Loans	$	10,525,058	$	16,872	$	1,657	$	3,533	$	38,106	$	10,585,226
Acquired Non-PCD Loans
Construction and land development	$	55,670	$	47	$	—	$	—	$	568	$	56,285
CRE - owner occupied	406,157		60		188		—		2,147		408,552
CRE - non-owner occupied	1,003,595		—		843		303		5,482		1,010,223
Residential real estate	851,390		1,054		421		—		9,370		862,235
Commercial and financial	375,499		91		478		—		172		376,240
Consumer	40,220		67		12		—		1,521		41,820
Total Acquired Non-PCD Loans	$	2,732,531	$	1,319	$	1,942	$	303	$	19,260	$	2,755,355
PCD Loans
Construction and land development	$	62	$	—	$	—	$	—	$	471	$	533
CRE - owner occupied	19,273		—		68		—		496		19,837
CRE - non-owner occupied	159,130		—		—		—		12,631		171,761
Residential real estate	25,508		345		822		—		1,715		28,390
Commercial and financial	11,707		2		501		—		595		12,805
Consumer	211		84		—		—		9		304
Total PCD Loans	$	215,891	$	431	$	1,391	$	—	$	15,917	$	233,630
Total Loans	$	13,473,480	$	18,622	$	4,990	$	3,836	$	73,283	$	13,574,211

 

	December 31, 2025
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
Portfolio Loans
Construction and land development	$	577,467	$	60	$	—	$	—	$	1,614	$	579,141
CRE - owner occupied	1,489,257		2,313		—		—		14,228		1,505,798
CRE - non-owner occupied	2,908,789		1,735		271		—		394		2,911,189
Residential real estate	2,091,065		4,618		364		—		5,821		2,101,868
Commercial and financial	1,807,012		11,518		19		—		9,489		1,828,038
Consumer	140,679		454		28		—		607		141,768
Total Portfolio Loans	$	9,014,269	$	20,698	$	682	$	—	$	32,153	$	9,067,802
Acquired Non-PCD Loans
Construction and land development	$	140,286	$	—	$	—	$	—	$	1,040	$	141,326
CRE - owner occupied	504,275		204		39		—		4,600		509,118
CRE - non-owner occupied	1,187,231		151		—		—		5,969		1,193,351
Residential real estate	954,820		3,609		195		124		5,088		963,836
Commercial and financial	470,768		50		4,785		—		527		476,130
Consumer	41,103		37		—		—		2,181		43,321
Total Acquired Non-PCD Loans	$	3,298,483	$	4,051	$	5,019	$	124	$	19,405	$	3,327,082
PCD Loans
Construction and land development	$	98	$	—	$	—	$	—	$	3,365	$	3,463
CRE - owner occupied	26,652		—		219		—		1,838		28,709
CRE - non-owner occupied	137,051		389		—		—		13,012		150,452
Residential real estate	30,018		993		833		118		1,193		33,155
Commercial and financial	15,786		—		—		—		1,035		16,821
Consumer	468		30		2		—		—		500
Total PCD Loans	$	210,073	$	1,412	$	1,054	$	118	$	20,443	$	233,100
Total Loans	$	12,522,825	$	26,161	$	6,755	$	242	$	72,001	$	12,627,984

All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest subsequently received on such loans is accounted for under the cost-recovery method, whereby interest income is not recognized until the loan balance is paid down to zero. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, and future payments are reasonably assured. The Company recognized interest income on nonaccrual loans of $0.1 million during each of the three months ended September 30, 2026 and September 30, 2025, respectively. The Company recognized $1.9 million and $2.3 million in interest income on nonaccrual loans during the nine months ended September 30, 2026 and September 30, 2025, respectively.

The following tables present net balances of loans on nonaccrual status as of:

	September 30, 2026
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	471	$	1,311	$	1,782
CRE - owner occupied	7,191		6,050		13,241
CRE - non-owner occupied	16,753		1,360		18,113
Residential real estate	10,287		17,081		27,368
Commercial and financial	6,655		4,281		10,936
Consumer	1,449		394		1,843
Totals	$	42,806	$	30,477	$	73,283

	December 31, 2025
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	4,207	$	1,812	$	6,019
CRE - owner occupied	15,546		5,120		20,666
CRE - non-owner occupied	18,202		1,173		19,375
Residential real estate	1,448		10,654		12,102
Commercial and financial	3,842		7,209		11,051
Consumer	—		2,788		2,788
Totals	$	43,245	$	28,756	$	72,001

The Company utilizes an internal asset classification system as a means of identifying problem and potential problem loans. The classifications of Pass, Special Mention, Substandard, and Doubtful are used to categorize loans under the internal classification system. Refer to “Note 4 – Loans” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details on classifications.

The following tables present the risk rating of loans and year-to-date1 gross charge offs by year of origination as of:

	September 30, 2026
(In thousands)	2026		2025		2024		2023		2022		Prior		Revolving		Revolving Converted to Term		Total
Construction and land development
Risk Ratings:
Pass	$	141,590	$	338,416	$	263,669	$	29,009	$	20,956	$	39,032	$	92,012	$	—	$	924,684
Special Mention	—		—		18,911		—		—		204		1,371		—		20,486
Substandard	—		—		—		—		14		655		1,149		—		1,818
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	141,590	$	338,416	$	282,580	$	29,009	$	20,970	$	39,891	$	94,532	$	—	$	946,988
Gross Charge Offs	$	—	$	—	$	—	$	—	$	—	$	34	$	—	$	—	$	34
CRE - owner occupied
Risk Ratings:
Pass	$	385,545	$	361,825	$	178,481	$	141,989	$	209,209	$	793,244	$	34,507	$	—	$	2,104,800
Special Mention	—		—		—		862		7,066		10,269		400		—		18,597
Substandard	—		1,307		9,537		12,182		7,009		23,450		166		—		53,651
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	385,545	$	363,132	$	188,018	$	155,033	$	223,284	$	826,963	$	35,073	$	—	$	2,177,048
Gross Charge Offs	$	—	$	—	$	—	$	23	$	16	$	6	$	—	$	—	$	45
CRE - non-owner occupied
Risk Ratings:
Pass	$	650,875	$	661,495	$	453,804	$	315,929	$	784,362	$	1,438,435	$	17,550	$	—	$	4,322,450
Special Mention	—		8,798		3,717		9,111		19,044		18,154		902		—		59,726
Substandard	—		1,208		48,594		360		25,517		18,625		8,799		—		103,103
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	650,875	$	671,501	$	506,115	$	325,400	$	828,923	$	1,475,214	$	27,251	$	—	$	4,485,279
Gross Charge Offs	$	—	$	—	$	—	$	459	$	593	$	16	$	—	$	—	$	1,068
Residential real estate
Risk Ratings:
Pass	$	404,327	$	229,668	$	166,970	$	158,008	$	438,877	$	1,084,947	$	659,132	$	96,352	$	3,238,281
Special Mention	—		598		—		733		—		1,684		3,442		772		7,229
Substandard	20		280		933		4,397		3,342		13,264		11,444		2,265		35,945
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	404,347	$	230,546	$	167,903	$	163,138	$	442,219	$	1,099,895	$	674,018	$	99,389	$	3,281,455
Gross Charge Offs	$	—	$	—	$	—	$	—	$	164	$	85	$	106	$	—	$	355
Commercial and financial
Risk Ratings:
Pass	$	384,178	$	531,896	$	357,048	$	123,244	$	183,234	$	266,614	$	554,280	$	—	$	2,400,494
Special Mention	351		7,885		1,693		2,852		3,280		1,622		3,249		—		20,932
Substandard	215		12,466		3,394		3,056		3,664		24,260		22,438		—		69,493
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	384,744	$	552,247	$	362,135	$	129,152	$	190,178	$	292,496	$	579,967	$	—	$	2,490,919
Gross Charge Offs	$	—	$	2,111	$	611	$	2,106	$	786	$	3,537	$	2,477	$	—	$	11,628
Consumer
Risk Ratings:
Pass	$	13,446	$	11,605	$	10,488	$	5,393	$	14,477	$	40,411	$	93,836	$	—	$	189,656
Special Mention	11		73		411		4		97		247		59		—		902
Substandard	63		92		—		16		1,525		157		111		—		1,964
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	13,520	$	11,770	$	10,899	$	5,413	$	16,099	$	40,815	$	94,006	$	—	$	192,522
Gross Charge Offs	$	1,096	$	56	$	125	$	140	$	89	$	106	$	81	$	—	$	1,693
Consolidated
Total	$	1,980,621	$	2,167,612	$	1,517,650	$	807,145	$	1,721,673	$	3,775,274	$	1,504,847	$	99,389	$	13,574,211
Gross Charge Offs1	$	1,096	$	2,167	$	736	$	2,728	$	1,648	$	3,784	$	2,664	$	—	$	14,823

1Represents gross charge-offs for the nine months ended September 30, 2026

	December 31, 2025
(In thousands)	2025		2024		2023		2022		2021		Prior		Revolving		Revolving Converted to Term		Total
Construction and land development
Risk Ratings:
Pass	$	121,237	$	332,530	$	57,222	$	41,967	$	38,085	$	31,055	$	87,508	$	—	$	709,604
Special Mention	—		—		—		—		4,914		348		—		—		5,262
Substandard	999		—		3,819		2,095		—		965		1,186		—		9,064
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	122,236	$	332,530	$	61,041	$	44,062	$	42,999	$	32,368	$	88,694	$	—	$	723,930
Gross Charge Offs	$	—	$	—	$	115	$	—	$	24	$	17	$	—	$	—	$	156
CRE - owner occupied
Risk Ratings:
Pass	$	405,841	$	180,447	$	156,256	$	235,989	$	241,758	$	703,744	$	29,882	$	—	$	1,953,917
Special Mention	—		7,380		2,816		966		5,319		12,838		398		—		29,717
Substandard	—		3,464		11,342		17,878		2,194		25,038		75		—		59,991
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	405,841	$	191,291	$	170,414	$	254,833	$	249,271	$	741,620	$	30,355	$	—	$	2,043,625
Gross Charge Offs	$	—	$	—	$	—	$	238	$	—	$	490	$	—	$	—	$	728
CRE - non-owner occupied
Risk Ratings:
Pass	$	704,003	$	538,748	$	318,106	$	848,500	$	552,105	$	1,084,106	$	31,102	$	—	$	4,076,670
Special Mention	—		22		8,984		44,738		9,781		42,347		—		—		105,872
Substandard	—		—		—		39,559		9,061		23,830		—		—		72,450
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	704,003	$	538,770	$	327,090	$	932,797	$	570,947	$	1,150,283	$	31,102	$	—	$	4,254,992
Gross Charge Offs	$	—	$	—	$	—	$	—	$	—	$	420	$	—	$	—	$	420
Residential real estate
Risk Ratings:
Pass	$	272,509	$	196,766	$	185,686	$	476,581	$	610,708	$	569,549	$	662,764	$	96,123	$	3,070,686
Special Mention	—		476		78		1,527		—		663		5,068		174		7,986
Substandard	—		318		113		2,120		5,079		6,630		4,810		1,117		20,187
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	272,509	$	197,560	$	185,877	$	480,228	$	615,787	$	576,842	$	672,642	$	97,414	$	3,098,859
Gross Charge Offs	$	—	$	—	$	—	$	145	$	210	$	36	$	19	$	—	$	410
Commercial and financial
Risk Ratings:
Pass	$	582,118	$	414,134	$	151,321	$	252,087	$	215,002	$	167,651	$	495,663	$	—	$	2,277,976
Special Mention	—		1,286		110		584		2,229		6,312		3,570		—		14,091
Substandard	—		716		2,944		5,067		6,538		6,211		6,850		—		28,326
Doubtful	—		—		—		—		596		—		—		—		596
Total	$	582,118	$	416,136	$	154,375	$	257,738	$	224,365	$	180,174	$	506,083	$	—	$	2,320,989
Gross Charge Offs	$	—	$	—	$	85	$	2,075	$	1,231	$	9,637	$	2,493	$	—	$	15,521
Consumer
Risk Ratings:
Pass	$	16,392	$	13,716	$	9,603	$	19,441	$	15,123	$	36,026	$	72,246	$	—	$	182,547
Special Mention	15		33		—		2		—		12		168		—		230
Substandard	4		13		23		2,261		—		461		50		—		2,812
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	16,411	$	13,762	$	9,626	$	21,704	$	15,123	$	36,499	$	72,464	$	—	$	185,589
Gross Charge Offs	$	842	$	201	$	62	$	1,294	$	108	$	42	$	238	$	—	$	2,787
Consolidated
Total	$	2,103,118	$	1,690,049	$	908,423	$	1,991,362	$	1,718,492	$	2,717,786	$	1,401,340	$	97,414	$	12,627,984
Gross Charge Offs1	$	842	$	201	$	262	$	3,752	$	1,573	$	10,642	$	2,750	$	—	$	20,022

1Represents gross charge-offs for the year ended December 31, 2025.

TBMs

The following tables present the amortized cost of TBM loans that were modified during the three and nine months ended September 30, 2026 and September 30, 2025.

	Three Months Ended September 30, 2026
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
Residential real estate	$	—	$	506	$	506	0.02	%
Totals	$	—	$	506	$	506	—	%

	Three Months Ended September 30, 2025
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	—	$	132	$	132	0.01	%
Residential real estate	—		83		83		—
Commercial and financial	—		745		745		0.04
Consumer	—		4		4		—
Totals	$	—	$	964	$	964	0.01	%

	Nine Months Ended September 30, 2026
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	—	$	45	$	45	—	%
Residential real estate	—		698		698		0.02
Commercial and financial	—		627		627		0.03
Consumer	—		4		4		—
Totals	$	—	$	1,374	$	1,374	0.01	%

	Nine Months Ended September 30, 2025
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	69	$	132	$	201	0.01	%
Residential real estate	—		300		300		0.01
Commercial and financial	67		2,388		2,455		0.14
Consumer	—		4		4		—
Totals	$	136	$	2,824	$	2,960	0.03	%

There were no unfunded lending related commitments associated with TBMs as of September 30, 2026 and September 30, 2025.

The following tables present the payment status of TBM loans that were modified in the twelve months prior to September 30, 2026 and in the twelve months prior to September 30, 2025.

	September 30, 2026
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
CRE - owner occupied	$	280	$	—	$	—	$	—	$	—	$	280
Residential real estate	20		—		—		—		888		908
Commercial and financial	665		69		—		—		84		818
Consumer	4		—		—		—		—		4
Totals	$	969	$	69	$	—	$	—	$	972	$	2,010

	September 30, 2025
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
CRE - owner occupied	$	69	$	—	$	—	$	—	$	132	$	201
Residential real estate	57		—		—		—		472		529
Commercial and financial	2,290		—		—		—		165		2,455
Consumer	—		—		—		—		4		4
Totals	$	2,416	$	—	$	—	$	—	$	773	$	3,189

TBM loans that experienced a payment default and that were modified in the 12 months preceding the default were immaterial for each period presented.

XML

Allowance for Credit Losses

9 Months Ended

Sep. 30, 2026

Receivables [Abstract]

Allowance for Credit Losses

Note 5 – Allowance for Credit Losses

Activity in the ACL is summarized as follows:

	Three Months Ended September 30, 2026
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	8,641	$	—	$	388	$	—	$	15	$	9,044
CRE - owner occupied	23,033		—		907		(23)		1		23,918
CRE - non-owner occupied	55,775		8,399		1,678		—		37		65,889
Residential real estate	50,120		—		437		—		22		50,579
Commercial and financial	37,379		—		2,768		(5,789)		636		34,994
Consumer	7,102		—		119		(480)		190		6,931
Totals	$	182,050	$	8,399	$	6,297	$	(6,292)	$	901	$	191,355

	Three Months Ended September 30, 2025
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	6,556	$	—	$	945	$	(139)	$	4	$	7,366
CRE - owner occupied	12,942		22		1,388		(197)		5		14,160
CRE - non-owner occupied	46,627		1		2,828		—		348		49,804
Residential real estate	41,687		60		686		(174)		59		42,318
Commercial and financial	27,109		18		2,411		(4,431)		1,454		26,561
Consumer	7,263		5		113		(371)		234		7,244
Totals	$	142,184	$	106	$	8,371	$	(5,312)	$	2,104	$	147,453

	Nine Months Ended September 30, 2026
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	9,740	$	—	$	(782)	$	(34)	$	120	$	9,044
CRE - owner occupied	16,528		—		7,206		(45)		229		23,918
CRE - non-owner occupied	56,143		8,399		2,254		(1,068)		161		65,889
Residential real estate	51,297		—		(419)		(355)		56		50,579
Commercial and financial	37,943		—		7,105		(11,628)		1,574		34,994
Consumer	7,152		—		691		(1,693)		781		6,931
Totals	$	178,803	$	8,399	$	16,055	$	(14,823)	$	2,921	$	191,355

	Nine Months Ended September 30, 2025
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	7,252	$	—	$	241	$	(139)	$	12	$	7,366
CRE - owner occupied	11,825		22		2,503		(197)		7		14,160
CRE - non-owner occupied	43,866		1		4,761		(320)		1,496		49,804
Residential real estate	39,168		60		3,390		(400)		100		42,318
Commercial and financial	27,533		18		10,748		(14,163)		2,425		26,561
Consumer	8,411		5		357		(2,296)		767		7,244
Totals	$	138,055	$	106	$	22,000	$	(17,515)	$	4,807	$	147,453

Management establishes the allowance using relevant available information from both internal and external sources, relating to past events, current economic conditions, and reasonable and supportable forecasts. Forecast data is sourced from Moody’s, a firm widely recognized for its research, analysis, and economic forecasts. The forecasts of future economic conditions are over the expected remaining life of the loan using economic forecasts that revert to long-term historical averages over time.

As of September 30, 2026 and December 31, 2025, the Company utilized a multiple scenario model comprised of a blend of Moody’s economic scenarios and considered the uncertainty associated with the assumptions in the scenarios, including continued actions taken by the Federal Reserve regarding monetary policy and changes in interest rates and the potential impact of those actions. Outcomes could differ from the scenarios utilized, and the Company incorporated qualitative considerations reflecting the risk of uncertain economic conditions, and for additional dimensions of risk that may not be captured in the quantitative model.

The following section discusses changes in the level of the ACL for the three months ended September 30, 2026.

The allowance increased $9.3 million, or 5.1%, during the third quarter of 2026 to $191.4 million, representing 1.41% of loans held for investment as of September 30, 2026.

During the third quarter of 2026, the Company recorded an $8.4 million measurement period adjustment related to an acquired loan that was determined to meet the definition of PCD as of the acquisition date. The measurement period adjustment increased the ACL on acquired PCD loans by $8.4 million based on facts and circumstances that existed at the acquisition date.

In the Construction and land development segment, the increase in allowance is driven by the increase in loan balances. In this segment, the primary source of repayment is typically from proceeds of the sale or permanent financing of the underlying property; therefore, industry and collateral type and estimated collateral values are among the relevant factors in assessing expected losses.

In the CRE - owner-occupied segment, the allowance increased due to the increase in loan balances. Risk characteristics include, but are not limited to, collateral type, note structure and loan seasoning.

In the CRE - non-owner-occupied segment, the allowance increased due to the $8.4 million measurement period adjustment on an acquired loan, and due to the increase in loan balances in this segment. Repayment is often dependent upon rental income from the successful operation of the underlying property or from the sale of the property. Loan performance may be adversely affected by general economic conditions or conditions specific to the real estate market, including property types. Collateral type, note structure, and loan seasoning are among the risk characteristics analyzed for this segment.

The Residential real estate segment includes residential mortgage, home equity loans, and HELOCs. The increase in the allowance is due to the increase in loan balances. Risk characteristics considered for this segment include, but are not limited to, borrower FICO score, lien position, LTV ratios, and loan seasoning.

In the Commercial and financial segment, borrowers are primarily small to medium sized professional firms and other businesses, and loans are generally supported by projected cash flows of the business, collateralized by business assets, and/or guaranteed by the business owners. The allowance decreased in the third quarter due to a decrease in modeled expected losses and due to charge-offs. Industry, collateral type, estimated collateral values, and loan seasoning are among the relevant factors in assessing expected losses.

Consumer loans include installment and revolving lines, loans for automobiles, boats, and other personal or family purposes. Risk characteristics considered for this segment include, but are not limited to, collateral type, LTV ratios, loan seasoning, and FICO scores. The decrease in allowance for consumer loans was driven by a decrease in loan balances.

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Derivatives

9 Months Ended

Sep. 30, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Note 6 – Derivatives

Interest Rate Contracts

The Company offers interest rate swaps when requested by customers to allow them to hedge the risk of rising interest rates on their variable rate loans. Upon entering into these swaps, the Company enters into offsetting positions with counterparties in order to minimize the interest rate risk. These back-to-back swaps are freestanding financial derivatives with the fair values reported in Other assets and Other liabilities. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under the arrangements for financial statement presentation purposes. Gains and losses on these back-to-back swaps, which offset, are recorded through Noninterest income.

Cash Flow Hedges

The Company periodically enters into contracts to mitigate exposure to the variability of future cash flows due to changes in interest rates on certain assets and liabilities. During the fourth quarter of 2025, the Company entered into three interest rate caps, each with a notional amount of $100.0 million, maturing in November 2030 and December 2030. The Company has designated these instruments as cash flow hedges and considers them highly effective in offsetting changes in forecasted cash flows attributable to interest rate movements on certain liabilities. Changes in the fair value of the interest rate caps are recorded in AOCI and subsequently reclassified into earnings when the hedged cash flows affect earnings. Premiums paid for the interest rate caps are amortized into interest income over the term of the hedges.

During the third quarter of 2026, the Company entered into a $200.0 million receive-fixed interest rate swap with an embedded interest rate cap and designated the instrument as a cash flow hedge of forecasted interest receipts on variable-rate assets indexed to one-month SOFR. The hedge, which matures in August 2029, is intended to reduce the impact of declining interest rates on future earnings.

For the three and nine months ended September 30, 2026, the Company recognized gains of $5.3 million and $6.7 million, respectively, in Other comprehensive income related to its cash flow hedges. During the same periods, the Company reclassified $0.1 million and $0.4 million, respectively, from AOCI into interest income as the hedged forecasted transactions affected earnings. The Company expects to reclassify approximately $1.0 million from AOCI into interest income during the next twelve months related to these agreements, which includes the premiums paid.

Fair Value Hedges

The Company periodically enters into interest rate swap contracts to hedge the risk of changes in fair value of the AFS securities portfolio due to changes in SOFR. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in Other comprehensive income. These derivative instruments are primarily for risk management purposes. There were no securities fair value hedges during the three and nine months ended September 30, 2026. For the nine months ended September 30, 2025, the Company recognized through Other comprehensive income, net losses of $0.4 million, and reclassified net losses of $0.5 million out of AOCI into interest income.

The Company has entered into interest rate swap contracts to hedge the risk of changes in the fair value of a pool of residential mortgages due to changes in SOFR. These fair value hedges utilize the portfolio layer method. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in interest income. These derivative instruments are primarily for risk management purposes. For each of the three and nine months ended September 30, 2026, the Company recognized gains through interest income of $0.1 million. For the three and nine months ended September 30, 2025, the Company recognized losses through interest income of $0.5 million and $0.4 million, respectively.

Economic Hedges

The Company enters into IRLCs to originate mortgage loans for which the interest rate on the loan is determined prior to funding, forward loan sale commitments for the future delivery of these mortgage loans for sale on the secondary market, and forward TBA mortgage-backed securities, all of which are classified as freestanding derivatives. For the three and nine months ended September 30, 2026, the Company recognized losses of $0.2 million and gains of $0.3 million, respectively, in Mortgage banking income in the Consolidated Statements of Income related to these non-hedging derivative financial instruments.

(In thousands)	Notional Amount		Fair Value		Balance Sheet Category
September 30, 2026
Interest rate contracts1	$	1,390,910	$	39,850	Other assets and Other liabilities
Residential mortgage fair value hedges	250,000		580		Other assets
Interest rate cash flow hedges	500,000		9,358		Other assets
IRLCs	7,673		123		Other liabilities
Forward TBA mortgage-backed securities	7,149		149		Other assets
Forward loan sale commitments	2,019		30		Other liabilities
December 31, 2025
Interest rate contracts1	$	1,152,442	$	25,009	Other assets and Other liabilities
Residential mortgage fair value hedges	400,000		380		Other liabilities
Interest rate caps cash flow hedges	300,000		3,064		Other assets
IRLCs	5,106		495		Other assets
Forward TBA mortgage-backed securities	5,122		94		Other liabilities
Forward loan sale commitments	285		51		Other assets
1Interest rate contracts include risk participation agreements with notional amounts of $131.4 million and $65.3 million at September 30, 2026, and December 31, 2025, respectively with nominal fair value in both periods.

The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges.

	Carrying amount of the hedged items				Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
(In thousands)	September 30, 2026		December 31, 2025		September 30, 2026		December 31, 2025
Loans, net1	$	1,420,491	$	1,043,345	$	(577)	$	559
1These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2026, the portfolio layer method was $250 million, of which $250 million was designated as hedged. At December 31, 2025, the portfolio layer method was $400 million, of which $400 million was designated as hedged.

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Securities Sold Under Agreements to Repurchase

9 Months Ended

Sep. 30, 2026

Broker-Dealer [Abstract]

Securities Sold Under Agreements to Repurchase

Note 7 – Securities Sold Under Agreements to Repurchase

Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is required to pledge collateral with value sufficient to fully collateralize borrowings. Company securities pledged were as follows by collateral type and maturity, as of: 

(In thousands)	September 30, 2026		December 31, 2025
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	559,024	$	512,066

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Regulatory Capital

9 Months Ended

Sep. 30, 2026

Banking And Thrift Disclosure [Abstract]

Regulatory Capital

Note 8 – Regulatory Capital

The Company is well-capitalized and at September 30, 2026, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the CET1 capital ratio regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well-capitalized banks under the regulatory framework for prompt corrective action.

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Contingent Liabilities

9 Months Ended

Sep. 30, 2026

Commitments and Contingencies Disclosure [Abstract]

Contingent Liabilities

Note 9 – Contingent Liabilities

The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, operating results or cash flows.

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Fair Value

9 Months Ended

Sep. 30, 2026

Fair Value Disclosures [Abstract]

Fair Value

Note 10 – Fair Value

Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2026 and December 31, 2025 included:

(In thousands)	Fair Value Measurements		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
At September 30, 2026
Financial Assets
Debt securities AFS1	$	4,634,355	$	100	$	4,634,255	$	—
Derivative financial instruments2	49,937		—		49,937		—
Loans held for sale2	14,462		—		14,462		—
OREO3	3,263		—		—		3,263
Equity securities4	13,255		13,255		—		—
MSR5	29,398		—		—		29,398
Financial Liabilities
Derivative financial instruments2	$	40,003	$	—	$	39,850	$	153
At December 31, 2025
Financial Assets
Debt securities AFS1	$	5,164,567	$	200	$	5,164,367	$	—
Derivative financial instruments2	28,620		—		28,125		495
Loans held for sale2	16,297		—		16,297		—
OREO3	4,250		—		—		4,250
Equity securities4	13,923		13,923		—		—
MSR5	28,061		—		—		28,061
Financial Liabilities
Derivative financial instruments2	$	25,483	$	—	$	25,389	$	94
1See “Note 3 – Securities” for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data for level 2 inputs. Level 3 inputs utilize a market approach that incorporates a pull-through rate assumption.
3Fair value is measured on a nonrecurring basis.
4Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other assets. Recurring fair value basis is determined using market quotations with fair value adjustments recognized in earnings.
5Recurring fair value basis determined using unobservable market data. Refer to “Note 8 - Goodwill and Acquired Intangible Assets” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details on assumptions utilized.

Derivative financial instruments: The fair value of these derivatives is based on a discounted cash flow approach. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps and forward TBA mortgage-backed securities is classified as Level 2. The fair values of these instruments are based upon the estimated amount the Company would receive or pay to terminate the instruments, taking into account current interest rates and, when appropriate, the current credit worthiness of the counterparties. IRLCs and forward loan sale commitment fair values are estimated based on quoted prices for similar loans in active markets. However, the value is adjusted by a factor which considers the likelihood of a loan in a lock position will ultimately close. This closing ratio is derived from internal data and is adjusted using significant accounting judgment. As such, these derivatives are classified as Level 3 measurements and the Company values these derivatives primarily using a market approach that incorporates flow mandatory market pricing, adjusted for expected pull‑through based on historical experience. For IRLCs, the weighted-average pull-through rate was 96% and 94% at September 30, 2026 and December 31, 2025, respectively, while the weighted-average current reference price was 98.32% and 101.26%, respectively. For forward loan sale commitments, the weighted-average pull-through rate was 100% at both September 30, 2026 and December 31, 2025, while the weighted-average current reference price was 98.50% and 101.12%, respectively.

Loans and OREO: Fair values of collateral-dependent real estate loans and OREO are based on recent real estate appraisals less estimated costs of sale. Evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost, and/or income approach. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time, but none were made by management. The fair values of these loans and properties are considered Level 3 in the fair value hierarchy. There were no collateral-dependent loans measured at fair value at both September 30, 2026 and December 31, 2025.

MSRs: The fair value of these servicing rights is based on an income approach. Various unobservable inputs to assumptions including expected cash flows, market discount rates, prepayment rates, servicing costs, and other factors are utilized, therefore the valuation of MSRs is classified as Level 3.

The following table presents changes in the Company's MSRs measured at fair value for the three and nine months ended September 30, 2026. There was no MSR balance during the three and nine months ended September 30, 2025:

	Three Months Ended		Nine Months Ended
(In thousands)	September 30, 2026
Carrying value at beginning of period	$	26,784	$	28,061
Originated servicing rights capitalized upon sale of loan	517		1,448
Change in fair value:
Due to payoffs/paydowns	(689)		(2,172)
Due to change in valuation inputs or assumptions	2,786		2,061
Carrying value at end of period	$	29,398	$	29,398

The following table presents data and key economic assumptions, as well as the valuation's sensitivity to interest rate fluctuations, related to the Company’s MSRs as of:

(In thousands)	September 30, 2026			December 31, 2025
Unpaid principal balance	$	2,365,165		$	2,540,798
Prepayment rate assumptions:
Weighted-average	9.58		%	12.74		%
Estimated impact on fair value of a 10% increase	$	(1,182)		$	(1,373)
Estimated impact on fair value of a 20% increase	(2,282)			(2,639)
Option-adjusted spread:
Weighted-average	5.50		%	5.50		%
Estimated impact on fair value of a 100 basis point increase	$	(1,201)		$	(1,163)
Estimated impact on fair value of a 200 basis point increase	(2,306)			(2,232)
Weighted-average coupon interest rate	4.78		%	4.78		%
Weighted-average servicing fee	0.25			0.25
Weighted-average remaining maturity (in months)	349			348

The sensitivity calculations above are hypothetical changes and should not be considered to be predictive of future performance. Changes in fair value based on variations in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, the effect of a variation in a particular assumption on the fair value is calculated without changing any other assumption, while in reality changes in one factor may result in changes in another, which may either magnify or counteract the effect of the change.

For recurring fair value measurements, transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarterly valuation process. During the nine months ended September 30, 2026, there were no such transfers.

For additional information on the valuation techniques and significant inputs for Level 2 and Level 3 assets and liabilities that are measured at fair value on a recurring basis, see “Note 16 - Fair Value” of the Annual Report on Form 10-K for the year ended December 31, 2025.

The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2026 and December 31, 2025 is as follows:

(In thousands)	Carrying Amount		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2026
Financial Assets
HTM debt securities1	$	552,982	$	—	$	435,311	$	—
Loans, net	13,382,856		—		147,248		12,837,275
Financial Liabilities
Deposits	16,580,159		—		—		16,580,540
FHLB and other borrowings	985,000		—		984,948		—
Subordinated debt	95,693		—		94,099		—
December 31, 2025
Financial Assets
HTM debt securities1	$	586,178	$	—	$	489,560	$	—
Time deposits with other banks	14,424		—		13,455		—
Loans, net	12,449,181		—		—		12,263,824
Financial Liabilities
Deposits	16,256,343		—		—		16,257,291
FHLB and other borrowings	835,000		—		833,483		—
Subordinated debt	95,161		—		90,248		—
1See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories.

The short maturity of the Company’s assets and liabilities results in a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest-bearing deposits with other banks, and securities sold under agreements to repurchase.

The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at September 30, 2026 and December 31, 2025:

HTM debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of Level 3 loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. The fair value of Level 2 loans is valued using observable market-based inputs, including quoted prices obtained from third-party pricing services based on recent market transactions and dealer quotations for comparable instruments.

Investments at NAV: The Company has equity investments in SBICs accounted for under the fair value practical expedient of NAV included in Other assets totaling $24.4 million at September 30, 2026 and $26.4 million at December 31, 2025, which are not included in the fair value hierarchy. These investments are made primarily through various SBIC funds as a strategy to provide expansion and growth opportunities to small businesses and are subject to various risks, including market, liquidity, and credit risk. SBICs are generally structured to operate for approximately 10 years and the Company’s investments are not redeemable. Distributions are received through the liquidation of the underlying assets, which is expected to occur over the next 5-10 years. Unfunded commitments related to these investments were $7.8 million at September 30, 2026 and $8.7 million at December 31, 2025.

Deposit liabilities: The fair value of demand deposits, savings accounts, and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

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Business Combinations

9 Months Ended

Sep. 30, 2026

Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]

Business Combinations

Note 11 – Business Combinations

Acquisition of Villages Bancorporation, Inc.

On October 1, 2025, the Company completed its acquisition of VBI, adding 19 branches in North Central Florida including The Villages® community. The Company acquired 100% of the outstanding common stock of VBI. Pursuant to the merger agreement, each share of VBI common stock was converted into the right to receive, at the shareholders' election, (i) $1,000.00 in cash, (ii) 38.5000 shares of Seacoast common stock or (iii) a 25% - 75% combination of cash and common stock, with the final election subject to a proration mechanism such that 25% of VBI shares received the cash consideration and 75% of VBI shares received the stock consideration. In the event any shareholder or shareholder group would have received more than 9.75% of cumulative outstanding Seacoast common stock, non-voting convertible preferred stock was issued in lieu of the excess amount of common shares. The final consideration totaled $829.1 million.

(In thousands, except per share data)	October 1, 2025
Number of VBI shares receiving stock	550
Per share exchange ratio for VBI shares receiving stock	38.5000
Number of shares of SBCF common stock issued	9,923
Number of shares of SBCF preferred stock issued1	11
Multiplied by SBCF price per share at October 1, 2025	$	30.50
Total Value of SBCF common and preferred stock issued	$	645,785
Number of VBI shares receiving cash	183
Per share exchange ratio for VBI shares receiving cash	$	1,000.00
Cash consideration paid to VBI shareholders, including cash paid for fractional shares	183,360
Total purchase price	$	829,145
1Preferred stock is 1/1000th share for every share of common stock.

The acquisition of VBI was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $287.5 million for this acquisition that is nondeductible for tax purposes. Determining fair values of assets and liabilities, especially the loan portfolio, CDI, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.

The table below presents the allocation of the purchase consideration.

(In thousands)	Initially Measured October 1, 2025		Measurement Period Adjustments		As Adjusted October 1, 2025
Assets:
Cash and cash equivalents	$	166,758	$	—	$	166,758
Investment securities	2,540,434		(42)		2,540,392
Loans	1,202,389		(9,051)		1,193,338
Bank premises and equipment	45,942		—		45,942
CDI	110,548		—		110,548
Goodwill	280,087		7,419		287,506
Other assets	99,776		—		99,776
Total Assets	$	4,445,934	$	(1,674)	$	4,444,260
Liabilities:
Deposits	$	3,450,869	$	—	$	3,450,869
Securities sold under agreements to repurchase	105,064		—		105,064
Other liabilities	60,856		(1,674)		59,182
Total Liabilities	$	3,616,789	$	(1,674)	$	3,615,115

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.

	October 1, 2025
(In thousands)	Book Balance		Fair Value
Loans:
Construction and land development	$	102,067	$	90,149
CRE - owner occupied	93,284		90,147
CRE - non-owner occupied	361,699		335,761
Residential real estate	365,935		349,786
Commercial and financial	335,831		322,276
Consumer	5,332		5,219
Total acquired loans	$	1,264,148	$	1,193,338

The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination:

(In thousands)	Initially Measured October 1, 2025		Measurement Period Adjustments		As Adjusted October 1, 2025
Book balance of loans at acquisition	$	148,575	$	43,195	$	191,770
ACL at acquisition	(3,026)		(8,400)		(11,426)
Non-credit related discount	(19,198)		(300)		(19,498)
Total PCD loans acquired	$	126,351	$	34,495	$	160,846

The acquisition of VBI resulted in the addition of $34.1 million in ACL, including $11.4 million for PCD loans, and $22.7 million for non-PCD loans recorded through the provision for credit losses.

The Company believes the deposits assumed in the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates, and age of deposit relationships. The CDI asset acquired from VBI is being amortized over 10 years using an accelerated method of amortization.

The Company assumed a financing obligation recognized within Long-term debt, net, refer to “Note 11 - Lease Commitments” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details.

Pro-forma Information

The table below presents pro-forma data as if the acquisition of VBI occurred at the beginning of 2025. The pro-forma information is presented for illustrative purposes only and is not necessarily indicative of the results of operations that would have occurred if the transactions had been effected on the assumed dates.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Net interest income	$	183,355	$	166,135	$	540,220	$	470,955
Net income available to common shareholders	57,730		48,297		144,884		122,202
EPS - diluted	0.55		0.46		1.39		1.17
EPS - basic	$	0.56	$	0.46	$	1.40	$	1.18

Acquisition of Heartland Bancshares, Inc.

On July 11, 2025, the Company completed its acquisition of Heartland, adding four branches in Central Florida. The Company acquired 100% of the outstanding common and preferred stock of Heartland. Under the terms of the definitive agreement, Heartland shareholders received a combination of cash and common stock, with the final consideration totaling $111.2 million.

(In thousands, except per share data)	July 11, 2025
Number of Heartland shares receiving stock	378
Per share exchange ratio for Heartland shares receiving stock	4.9263
Number of shares of SBCF common stock issued	1,862
Multiplied by SBCF price per share at July 11, 2025	$	29.29
Value of SBCF common stock issued	$	54,547
Number of Heartland shares receiving cash	378
Per share cash consideration for Heartland shares receiving cash	$	147.10
Cash consideration paid to Heartland shareholders, including cash paid for fractional shares	$	55,623
Cash paid to Heartland option holders	1,054
Total purchase price	$	111,224

The acquisition of Heartland was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $22.2 million for this acquisition that is nondeductible for tax purposes. Determining fair values of assets and liabilities, especially the loan portfolio, CDI, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.

The table below presents the allocation of the purchase consideration.

(In thousands)	July 11, 2025
Assets:
Cash and cash equivalents	$	242,672
Investment securities	357,905
Loans	153,294
Bank premises and equipment	7,926
CDI	20,922
Goodwill	22,228
Other assets	18,590
Total Assets	$	823,537
Liabilities:
Deposits	$	705,195
Other liabilities	7,118
Total Liabilities	$	712,313

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.

	July 11, 2025
(In thousands)	Book Balance		Fair Value
Loans:
Construction and land development	$	7,575	$	7,496
CRE - owner occupied	31,504		30,790
CRE - non-owner occupied	40,239		38,992
Residential real estate	52,960		51,434
Commercial and financial	21,104		21,029
Consumer	3,614		3,553
Total acquired loans	$	156,996	$	153,294

The book value and fair value amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination was $7.2 million and $6.4 million, respectively.

The acquisition of Heartland resulted in the addition of $2.0 million in ACL, including $0.1 million for PCD loans, and $1.9 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition.

The Company believes the deposits assumed in the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates, and age of deposit relationships. The CDI asset acquired from Heartland is being amortized over 10 years using an accelerated method of amortization.

Acquisition of W.L. Hunter Insurance Agency, LLC

On July 1, 2026, the Company, through its wholly-owned Nature Coast Insurance subsidiary, completed its acquisition of the W.L. Hunter Insurance Agency, LLC for total consideration of $5.8 million. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill and a customer relationship intangible asset of $2.9 million each. The goodwill is not deductible for tax purposes. The customer relationship intangible asset is being amortized on a straight-line basis over 10 years.

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Business Segment

9 Months Ended

Sep. 30, 2026

Segment Reporting [Abstract]

Business Segment

Note 12 – Business Segment

The Company's one reportable segment provides integrated financial services including commercial and consumer banking, wealth management, and mortgage and insurance services to customers. Segment revenues are driven primarily by interest and fees on loans, interest on cash and cash equivalents and on investment securities, and fees on depository products and services.

The Company manages business activities, allocates resources and evaluates financial performance on an organization-wide basis. The CODM is the CEO. The financial results of the segment are presented using the same policies described in “Note 1 - Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

The CODM evaluates the performance of the segment and allocates resources based on net income that is also reported on the Consolidated Statements of Income as consolidated net income and segment assets that are reported on the Consolidated Balance Sheets as total consolidated assets. Net income is used to monitor budget versus actual results. The significant segment expenses that are regularly provided to the CODM are interest expense, provision for credit losses, salaries and employee benefits, outsourced data processing costs, and occupancy, which are all reflected in the Consolidated Statements of Income. Certain noncash expenses, such as depreciation and amortization expense, are disclosed in the Consolidated Statement of Cash Flows.

XML

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

XML

Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2026

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, the financial statements do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.

Operating results for the three and nine months ended September 30, 2026, are not necessarily indicative of the results that may be expected for the year ending December 31, 2026, or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

Use of Estimates

Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the ACL, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements.

Issued Accounting Standards Not Yet Adopted

Issued Accounting Standards Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, Expense Disaggregation Disclosures. ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.

In November 2025, the FASB issued ASU 2025-08, Credit Losses (Topic 326): Purchased Loans. ASU 2025-08 requires that purchased seasoned loans be accounted for using the gross-up approach. The gross-up approach requires recognition of an ACL for the estimate of credit losses at the acquisition date. The ACL is recorded with an offsetting gross-up adjustment to the purchase price of the acquired financial asset. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods within those annual reporting periods. Early adoption is permitted. The Company is evaluating the date of adoption and the impact of the changes to its consolidated financial statements and existing disclosures.

In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements. ASU 2025-09 introduces five targeted improvements to better align hedge accounting with entities’ risk management activities. The standard is effective for fiscal years beginning after December 15, 2026, and for interim periods within those annual reporting periods. Early adoption is permitted. The Company is evaluating the impact of the changes to its consolidated financial statements and existing disclosures.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements. ASU 2025-11 clarifies interim disclosure requirements and provides a comprehensive list of interim disclosures that are required by GAAP. The ASU also includes a disclosure principle that requires entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. The standard is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its consolidated financial statements and existing disclosures.

Fair Value Measurement

HTM debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of Level 3 loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. The fair value of Level 2 loans is valued using observable market-based inputs, including quoted prices obtained from third-party pricing services based on recent market transactions and dealer quotations for comparable instruments.

Investments at NAV: The Company has equity investments in SBICs accounted for under the fair value practical expedient of NAV included in Other assets totaling $24.4 million at September 30, 2026 and $26.4 million at December 31, 2025, which are not included in the fair value hierarchy. These investments are made primarily through various SBIC funds as a strategy to provide expansion and growth opportunities to small businesses and are subject to various risks, including market, liquidity, and credit risk. SBICs are generally structured to operate for approximately 10 years and the Company’s investments are not redeemable. Distributions are received through the liquidation of the underlying assets, which is expected to occur over the next 5-10 years. Unfunded commitments related to these investments were $7.8 million at September 30, 2026 and $8.7 million at December 31, 2025.

Deposit liabilities: The fair value of demand deposits, savings accounts, and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

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Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2026

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Basic EPS
Net income	$	59,868	$	36,467	$	151,298	$	110,618
Less preferred stock dividends	(2,138)		—		(6,414)		—
Net income available to common shareholders	57,730		36,467		144,884		110,618
Less allocation of earnings to preferred stock	(4,126)		—		(9,388)		—
Net income available to common shareholders after allocation of earnings to preferred stock	$	53,604	$	36,467	$	135,496	$	110,618
Average common shares outstanding	96,269		86,619		96,514		85,398
Net income per share	$	0.56	$	0.42	$	1.40	$	1.30
Diluted EPS
Net income available to common shareholders	$	57,730	$	36,467	$	144,884	$	110,618
Less allocation of earnings to preferred stock	(4,089)		—		(9,304)		—
Net income available to common shareholders after allocation of earnings to preferred stock	$	53,641	$	36,467	$	135,580	$	110,618
Average common shares outstanding	96,269		86,619		96,514		85,398
Add: Dilutive effect of employee restricted stock and stock options	968		806		973		756
Average diluted shares outstanding	97,237		87,425		97,487		86,154
Net income per share	$	0.55	$	0.42	$	1.39	$	1.28

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Securities (Tables)

9 Months Ended

Sep. 30, 2026

Investments, Debt and Equity Securities [Abstract]

Schedule of Amortized Cost and Fair Value of AFS and HTM Securities

The amortized cost, gross unrealized gains and losses and fair value of debt securities AFS and HTM at September 30, 2026 and December 31, 2025 are summarized as follows:

	September 30, 2026
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	60,756	$	8	$	(2,702)	$	58,062
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,728,834		195		(297,828)		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	284,625		207		(11,177)		273,655
Private mortgage-backed securities and collateralized mortgage obligations	81,000		108		(6,590)		74,518
CLOs	317,266		508		(858)		316,916
Obligations of state and political subdivisions	333,779		—		(23,647)		310,132
Other debt securities	176,779		52		(6,960)		169,871
Totals	$	4,983,039	$	1,078	$	(349,762)	$	4,634,355
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	466,721	$	—	$	(109,805)	$	356,916
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		—		(7,866)		78,395
Totals	$	552,982	$	—	$	(117,671)	$	435,311

	December 31, 2025
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	54,831	$	365	$	(451)	$	54,745
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,681,499		41,388		(135,388)		3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	395,165		4,636		(5,928)		393,873
Private mortgage-backed securities and collateralized mortgage obligations	131,846		561		(5,010)		127,397
CLOs	423,864		636		(512)		423,988
Obligations of state and political subdivisions	336,417		651		(2,520)		334,548
Other debt securities	242,672		421		(576)		242,517
Totals	$	5,266,294	$	48,658	$	(150,385)	$	5,164,567
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	498,931	$	—	$	(90,696)	$	408,235
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	87,247		—		(5,922)		81,325
Totals	$	586,178	$	—	$	(96,618)	$	489,560

Schedule of Amortized Cost and Fair Value of Held-to-Maturity Securities

The amortized cost, gross unrealized gains and losses and fair value of debt securities AFS and HTM at September 30, 2026 and December 31, 2025 are summarized as follows:

	September 30, 2026
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	60,756	$	8	$	(2,702)	$	58,062
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,728,834		195		(297,828)		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	284,625		207		(11,177)		273,655
Private mortgage-backed securities and collateralized mortgage obligations	81,000		108		(6,590)		74,518
CLOs	317,266		508		(858)		316,916
Obligations of state and political subdivisions	333,779		—		(23,647)		310,132
Other debt securities	176,779		52		(6,960)		169,871
Totals	$	4,983,039	$	1,078	$	(349,762)	$	4,634,355
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	466,721	$	—	$	(109,805)	$	356,916
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		—		(7,866)		78,395
Totals	$	552,982	$	—	$	(117,671)	$	435,311

	December 31, 2025
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
AFS Debt Securities
U.S. Treasury securities and obligations of U.S. government agencies	$	54,831	$	365	$	(451)	$	54,745
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	3,681,499		41,388		(135,388)		3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	395,165		4,636		(5,928)		393,873
Private mortgage-backed securities and collateralized mortgage obligations	131,846		561		(5,010)		127,397
CLOs	423,864		636		(512)		423,988
Obligations of state and political subdivisions	336,417		651		(2,520)		334,548
Other debt securities	242,672		421		(576)		242,517
Totals	$	5,266,294	$	48,658	$	(150,385)	$	5,164,567
HTM Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	498,931	$	—	$	(90,696)	$	408,235
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	87,247		—		(5,922)		81,325
Totals	$	586,178	$	—	$	(96,618)	$	489,560

Schedule of Investments Classified by Contractual Maturity

The amortized cost and fair value of securities HTM and AFS as of September 30, 2026, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held-to-Maturity				Available-for-Sale
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	—	$	—	$	6,265	$	6,260
Due after one year through five years	—		—		2,993		2,921
Due after five years through ten years	—		—		50,352		46,655
Due after ten years	—		—		334,925		312,358
	—		—		394,535		368,194
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	466,721		356,916		3,728,834		3,431,201
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	86,261		78,395		284,625		273,655
Private mortgage-backed securities and collateralized mortgage obligations	—		—		81,000		74,518
CLOs	—		—		317,266		316,916
Other debt securities	—		—		176,779		169,871
Totals	$	552,982	$	435,311	$	4,983,039	$	4,634,355

Schedule of Debt Securities in Unrealized Loss Position

The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded. Information pertaining to our securities with gross unrealized losses at September 30, 2026 and December 31, 2025, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss positions is as follows:

	September 30, 2026
	Less Than 12 Months				12 Months or Longer				Total1
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. government agencies	$	46,460	$	(2,252)	$	8,732	$	(450)	$	55,192	$	(2,702)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	2,995,789		(182,019)		398,717		(115,809)		3,394,506		(297,828)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	150,581		(4,669)		68,196		(6,508)		218,777		(11,177)
Private mortgage-backed securities and collateralized mortgage obligations	7,924		(231)		63,609		(6,359)		71,533		(6,590)
CLOs	194,479		(627)		46,960		(231)		241,439		(858)
Obligations of state and political subdivisions	304,841		(22,133)		5,291		(1,514)		310,132		(23,647)
Other debt securities	153,813		(6,960)		—		—		153,813		(6,960)
Totals	$	3,853,887	$	(218,891)	$	591,505	$	(130,871)	$	4,445,392	$	(349,762)
1Comprised of 661 individual securities.

	December 31, 2025
	Less Than 12 Months				12 Months or Longer				Total1
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. government agencies	$	21,846	$	(31)	$	13,932	$	(420)	$	35,778	$	(451)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	378,739		(1,625)		730,551		(133,763)		1,109,290		(135,388)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	90,765		(61)		95,090		(5,867)		185,855		(5,928)
Private mortgage-backed securities and collateralized mortgage obligations	969		(1)		76,829		(5,009)		77,798		(5,010)
CLOs	211,052		(320)		38,882		(192)		249,934		(512)
Obligations of state and political subdivisions	244,168		(1,445)		5,730		(1,075)		249,898		(2,520)
Other debt securities	132,345		(576)		—		—		132,345		(576)
Totals	$	1,079,884	$	(4,059)	$	961,014	$	(146,326)	$	2,040,898	$	(150,385)
1Comprised of 383 individual securities.

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Loans (Tables)

9 Months Ended

Sep. 30, 2026

Receivables [Abstract]

Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans

The following tables present net loan balances by segment for portfolio loans, PCD loans and loans purchased which are not considered purchased credit deteriorated (“Non-PCD”) as of:

	September 30, 2026
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total
Construction and land development	$	890,170	$	56,285	$	533	$	946,988
CRE - owner occupied	1,748,659		408,552		19,837		2,177,048
CRE - non-owner occupied	3,303,295		1,010,223		171,761		4,485,279
Residential real estate	2,390,830		862,235		28,390		3,281,455
Commercial and financial	2,101,874		376,240		12,805		2,490,919
Consumer	150,398		41,820		304		192,522
Totals	$	10,585,226	$	2,755,355	$	233,630	$	13,574,211

	December 31, 2025
(In thousands)	Portfolio Loans		Acquired Non-PCD Loans		PCD Loans		Total
Construction and land development	$	579,141	$	141,326	$	3,463	$	723,930
CRE - owner occupied	1,505,798		509,118		28,709		2,043,625
CRE - non-owner occupied	2,911,189		1,193,351		150,452		4,254,992
Residential real estate	2,101,868		963,836		33,155		3,098,859
Commercial and financial	1,828,038		476,130		16,821		2,320,989
Consumer	141,768		43,321		500		185,589
Totals	$	9,067,802	$	3,327,082	$	233,100	$	12,627,984

Schedule of Past Due Financing Receivables

The following tables present the status of net loan balances as of September 30, 2026 and December 31, 2025.

	September 30, 2026
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
Portfolio Loans
Construction and land development	$	889,348	$	79	$	—	$	—	$	743	$	890,170
CRE - owner occupied	1,735,842		2,219		—		—		10,598		1,748,659
CRE - non-owner occupied	3,299,558		3,262		475		—		—		3,303,295
Residential real estate	2,368,819		4,682		1,046		—		16,283		2,390,830
Commercial and financial	2,082,207		5,908		57		3,533		10,169		2,101,874
Consumer	149,284		722		79		—		313		150,398
Total Portfolio Loans	$	10,525,058	$	16,872	$	1,657	$	3,533	$	38,106	$	10,585,226
Acquired Non-PCD Loans
Construction and land development	$	55,670	$	47	$	—	$	—	$	568	$	56,285
CRE - owner occupied	406,157		60		188		—		2,147		408,552
CRE - non-owner occupied	1,003,595		—		843		303		5,482		1,010,223
Residential real estate	851,390		1,054		421		—		9,370		862,235
Commercial and financial	375,499		91		478		—		172		376,240
Consumer	40,220		67		12		—		1,521		41,820
Total Acquired Non-PCD Loans	$	2,732,531	$	1,319	$	1,942	$	303	$	19,260	$	2,755,355
PCD Loans
Construction and land development	$	62	$	—	$	—	$	—	$	471	$	533
CRE - owner occupied	19,273		—		68		—		496		19,837
CRE - non-owner occupied	159,130		—		—		—		12,631		171,761
Residential real estate	25,508		345		822		—		1,715		28,390
Commercial and financial	11,707		2		501		—		595		12,805
Consumer	211		84		—		—		9		304
Total PCD Loans	$	215,891	$	431	$	1,391	$	—	$	15,917	$	233,630
Total Loans	$	13,473,480	$	18,622	$	4,990	$	3,836	$	73,283	$	13,574,211

 

	December 31, 2025
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
Portfolio Loans
Construction and land development	$	577,467	$	60	$	—	$	—	$	1,614	$	579,141
CRE - owner occupied	1,489,257		2,313		—		—		14,228		1,505,798
CRE - non-owner occupied	2,908,789		1,735		271		—		394		2,911,189
Residential real estate	2,091,065		4,618		364		—		5,821		2,101,868
Commercial and financial	1,807,012		11,518		19		—		9,489		1,828,038
Consumer	140,679		454		28		—		607		141,768
Total Portfolio Loans	$	9,014,269	$	20,698	$	682	$	—	$	32,153	$	9,067,802
Acquired Non-PCD Loans
Construction and land development	$	140,286	$	—	$	—	$	—	$	1,040	$	141,326
CRE - owner occupied	504,275		204		39		—		4,600		509,118
CRE - non-owner occupied	1,187,231		151		—		—		5,969		1,193,351
Residential real estate	954,820		3,609		195		124		5,088		963,836
Commercial and financial	470,768		50		4,785		—		527		476,130
Consumer	41,103		37		—		—		2,181		43,321
Total Acquired Non-PCD Loans	$	3,298,483	$	4,051	$	5,019	$	124	$	19,405	$	3,327,082
PCD Loans
Construction and land development	$	98	$	—	$	—	$	—	$	3,365	$	3,463
CRE - owner occupied	26,652		—		219		—		1,838		28,709
CRE - non-owner occupied	137,051		389		—		—		13,012		150,452
Residential real estate	30,018		993		833		118		1,193		33,155
Commercial and financial	15,786		—		—		—		1,035		16,821
Consumer	468		30		2		—		—		500
Total PCD Loans	$	210,073	$	1,412	$	1,054	$	118	$	20,443	$	233,100
Total Loans	$	12,522,825	$	26,161	$	6,755	$	242	$	72,001	$	12,627,984

Schedule of Nonaccrual Loans by Loan Category

The following tables present net balances of loans on nonaccrual status as of:

	September 30, 2026
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	471	$	1,311	$	1,782
CRE - owner occupied	7,191		6,050		13,241
CRE - non-owner occupied	16,753		1,360		18,113
Residential real estate	10,287		17,081		27,368
Commercial and financial	6,655		4,281		10,936
Consumer	1,449		394		1,843
Totals	$	42,806	$	30,477	$	73,283

	December 31, 2025
(In thousands)	Nonaccrual Loans With No Related Allowance		Nonaccrual Loans With an Allowance		Total Nonaccrual Loans
Construction and land development	$	4,207	$	1,812	$	6,019
CRE - owner occupied	15,546		5,120		20,666
CRE - non-owner occupied	18,202		1,173		19,375
Residential real estate	1,448		10,654		12,102
Commercial and financial	3,842		7,209		11,051
Consumer	—		2,788		2,788
Totals	$	43,245	$	28,756	$	72,001

Schedule of Risk Categories of Loans by Class of Loans

The following tables present the risk rating of loans and year-to-date1 gross charge offs by year of origination as of:

	September 30, 2026
(In thousands)	2026		2025		2024		2023		2022		Prior		Revolving		Revolving Converted to Term		Total
Construction and land development
Risk Ratings:
Pass	$	141,590	$	338,416	$	263,669	$	29,009	$	20,956	$	39,032	$	92,012	$	—	$	924,684
Special Mention	—		—		18,911		—		—		204		1,371		—		20,486
Substandard	—		—		—		—		14		655		1,149		—		1,818
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	141,590	$	338,416	$	282,580	$	29,009	$	20,970	$	39,891	$	94,532	$	—	$	946,988
Gross Charge Offs	$	—	$	—	$	—	$	—	$	—	$	34	$	—	$	—	$	34
CRE - owner occupied
Risk Ratings:
Pass	$	385,545	$	361,825	$	178,481	$	141,989	$	209,209	$	793,244	$	34,507	$	—	$	2,104,800
Special Mention	—		—		—		862		7,066		10,269		400		—		18,597
Substandard	—		1,307		9,537		12,182		7,009		23,450		166		—		53,651
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	385,545	$	363,132	$	188,018	$	155,033	$	223,284	$	826,963	$	35,073	$	—	$	2,177,048
Gross Charge Offs	$	—	$	—	$	—	$	23	$	16	$	6	$	—	$	—	$	45
CRE - non-owner occupied
Risk Ratings:
Pass	$	650,875	$	661,495	$	453,804	$	315,929	$	784,362	$	1,438,435	$	17,550	$	—	$	4,322,450
Special Mention	—		8,798		3,717		9,111		19,044		18,154		902		—		59,726
Substandard	—		1,208		48,594		360		25,517		18,625		8,799		—		103,103
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	650,875	$	671,501	$	506,115	$	325,400	$	828,923	$	1,475,214	$	27,251	$	—	$	4,485,279
Gross Charge Offs	$	—	$	—	$	—	$	459	$	593	$	16	$	—	$	—	$	1,068
Residential real estate
Risk Ratings:
Pass	$	404,327	$	229,668	$	166,970	$	158,008	$	438,877	$	1,084,947	$	659,132	$	96,352	$	3,238,281
Special Mention	—		598		—		733		—		1,684		3,442		772		7,229
Substandard	20		280		933		4,397		3,342		13,264		11,444		2,265		35,945
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	404,347	$	230,546	$	167,903	$	163,138	$	442,219	$	1,099,895	$	674,018	$	99,389	$	3,281,455
Gross Charge Offs	$	—	$	—	$	—	$	—	$	164	$	85	$	106	$	—	$	355
Commercial and financial
Risk Ratings:
Pass	$	384,178	$	531,896	$	357,048	$	123,244	$	183,234	$	266,614	$	554,280	$	—	$	2,400,494
Special Mention	351		7,885		1,693		2,852		3,280		1,622		3,249		—		20,932
Substandard	215		12,466		3,394		3,056		3,664		24,260		22,438		—		69,493
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	384,744	$	552,247	$	362,135	$	129,152	$	190,178	$	292,496	$	579,967	$	—	$	2,490,919
Gross Charge Offs	$	—	$	2,111	$	611	$	2,106	$	786	$	3,537	$	2,477	$	—	$	11,628
Consumer
Risk Ratings:
Pass	$	13,446	$	11,605	$	10,488	$	5,393	$	14,477	$	40,411	$	93,836	$	—	$	189,656
Special Mention	11		73		411		4		97		247		59		—		902
Substandard	63		92		—		16		1,525		157		111		—		1,964
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	13,520	$	11,770	$	10,899	$	5,413	$	16,099	$	40,815	$	94,006	$	—	$	192,522
Gross Charge Offs	$	1,096	$	56	$	125	$	140	$	89	$	106	$	81	$	—	$	1,693
Consolidated
Total	$	1,980,621	$	2,167,612	$	1,517,650	$	807,145	$	1,721,673	$	3,775,274	$	1,504,847	$	99,389	$	13,574,211
Gross Charge Offs1	$	1,096	$	2,167	$	736	$	2,728	$	1,648	$	3,784	$	2,664	$	—	$	14,823

1Represents gross charge-offs for the nine months ended September 30, 2026

	December 31, 2025
(In thousands)	2025		2024		2023		2022		2021		Prior		Revolving		Revolving Converted to Term		Total
Construction and land development
Risk Ratings:
Pass	$	121,237	$	332,530	$	57,222	$	41,967	$	38,085	$	31,055	$	87,508	$	—	$	709,604
Special Mention	—		—		—		—		4,914		348		—		—		5,262
Substandard	999		—		3,819		2,095		—		965		1,186		—		9,064
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	122,236	$	332,530	$	61,041	$	44,062	$	42,999	$	32,368	$	88,694	$	—	$	723,930
Gross Charge Offs	$	—	$	—	$	115	$	—	$	24	$	17	$	—	$	—	$	156
CRE - owner occupied
Risk Ratings:
Pass	$	405,841	$	180,447	$	156,256	$	235,989	$	241,758	$	703,744	$	29,882	$	—	$	1,953,917
Special Mention	—		7,380		2,816		966		5,319		12,838		398		—		29,717
Substandard	—		3,464		11,342		17,878		2,194		25,038		75		—		59,991
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	405,841	$	191,291	$	170,414	$	254,833	$	249,271	$	741,620	$	30,355	$	—	$	2,043,625
Gross Charge Offs	$	—	$	—	$	—	$	238	$	—	$	490	$	—	$	—	$	728
CRE - non-owner occupied
Risk Ratings:
Pass	$	704,003	$	538,748	$	318,106	$	848,500	$	552,105	$	1,084,106	$	31,102	$	—	$	4,076,670
Special Mention	—		22		8,984		44,738		9,781		42,347		—		—		105,872
Substandard	—		—		—		39,559		9,061		23,830		—		—		72,450
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	704,003	$	538,770	$	327,090	$	932,797	$	570,947	$	1,150,283	$	31,102	$	—	$	4,254,992
Gross Charge Offs	$	—	$	—	$	—	$	—	$	—	$	420	$	—	$	—	$	420
Residential real estate
Risk Ratings:
Pass	$	272,509	$	196,766	$	185,686	$	476,581	$	610,708	$	569,549	$	662,764	$	96,123	$	3,070,686
Special Mention	—		476		78		1,527		—		663		5,068		174		7,986
Substandard	—		318		113		2,120		5,079		6,630		4,810		1,117		20,187
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	272,509	$	197,560	$	185,877	$	480,228	$	615,787	$	576,842	$	672,642	$	97,414	$	3,098,859
Gross Charge Offs	$	—	$	—	$	—	$	145	$	210	$	36	$	19	$	—	$	410
Commercial and financial
Risk Ratings:
Pass	$	582,118	$	414,134	$	151,321	$	252,087	$	215,002	$	167,651	$	495,663	$	—	$	2,277,976
Special Mention	—		1,286		110		584		2,229		6,312		3,570		—		14,091
Substandard	—		716		2,944		5,067		6,538		6,211		6,850		—		28,326
Doubtful	—		—		—		—		596		—		—		—		596
Total	$	582,118	$	416,136	$	154,375	$	257,738	$	224,365	$	180,174	$	506,083	$	—	$	2,320,989
Gross Charge Offs	$	—	$	—	$	85	$	2,075	$	1,231	$	9,637	$	2,493	$	—	$	15,521
Consumer
Risk Ratings:
Pass	$	16,392	$	13,716	$	9,603	$	19,441	$	15,123	$	36,026	$	72,246	$	—	$	182,547
Special Mention	15		33		—		2		—		12		168		—		230
Substandard	4		13		23		2,261		—		461		50		—		2,812
Doubtful	—		—		—		—		—		—		—		—		—
Total	$	16,411	$	13,762	$	9,626	$	21,704	$	15,123	$	36,499	$	72,464	$	—	$	185,589
Gross Charge Offs	$	842	$	201	$	62	$	1,294	$	108	$	42	$	238	$	—	$	2,787
Consolidated
Total	$	2,103,118	$	1,690,049	$	908,423	$	1,991,362	$	1,718,492	$	2,717,786	$	1,401,340	$	97,414	$	12,627,984
Gross Charge Offs1	$	842	$	201	$	262	$	3,752	$	1,573	$	10,642	$	2,750	$	—	$	20,022

1Represents gross charge-offs for the year ended December 31, 2025.

Schedule of Troubled Borrower Modifications

The following tables present the amortized cost of TBM loans that were modified during the three and nine months ended September 30, 2026 and September 30, 2025.

	Three Months Ended September 30, 2026
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
Residential real estate	$	—	$	506	$	506	0.02	%
Totals	$	—	$	506	$	506	—	%

	Three Months Ended September 30, 2025
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	—	$	132	$	132	0.01	%
Residential real estate	—		83		83		—
Commercial and financial	—		745		745		0.04
Consumer	—		4		4		—
Totals	$	—	$	964	$	964	0.01	%

	Nine Months Ended September 30, 2026
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	—	$	45	$	45	—	%
Residential real estate	—		698		698		0.02
Commercial and financial	—		627		627		0.03
Consumer	—		4		4		—
Totals	$	—	$	1,374	$	1,374	0.01	%

	Nine Months Ended September 30, 2025
(In thousands)	Rate Reduction or Rate Reduction with Term Extension		Term Extension and/or Payment Delay		Total		% of Total Class of Loans
CRE - owner occupied	$	69	$	132	$	201	0.01	%
Residential real estate	—		300		300		0.01
Commercial and financial	67		2,388		2,455		0.14
Consumer	—		4		4		—
Totals	$	136	$	2,824	$	2,960	0.03	%

There were no unfunded lending related commitments associated with TBMs as of September 30, 2026 and September 30, 2025.

The following tables present the payment status of TBM loans that were modified in the twelve months prior to September 30, 2026 and in the twelve months prior to September 30, 2025.

	September 30, 2026
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
CRE - owner occupied	$	280	$	—	$	—	$	—	$	—	$	280
Residential real estate	20		—		—		—		888		908
Commercial and financial	665		69		—		—		84		818
Consumer	4		—		—		—		—		4
Totals	$	969	$	69	$	—	$	—	$	972	$	2,010

	September 30, 2025
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total
CRE - owner occupied	$	69	$	—	$	—	$	—	$	132	$	201
Residential real estate	57		—		—		—		472		529
Commercial and financial	2,290		—		—		—		165		2,455
Consumer	—		—		—		—		4		4
Totals	$	2,416	$	—	$	—	$	—	$	773	$	3,189

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Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2026

Receivables [Abstract]

Schedule of Allowance for Credit Losses

Activity in the ACL is summarized as follows:

	Three Months Ended September 30, 2026
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	8,641	$	—	$	388	$	—	$	15	$	9,044
CRE - owner occupied	23,033		—		907		(23)		1		23,918
CRE - non-owner occupied	55,775		8,399		1,678		—		37		65,889
Residential real estate	50,120		—		437		—		22		50,579
Commercial and financial	37,379		—		2,768		(5,789)		636		34,994
Consumer	7,102		—		119		(480)		190		6,931
Totals	$	182,050	$	8,399	$	6,297	$	(6,292)	$	901	$	191,355

	Three Months Ended September 30, 2025
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	6,556	$	—	$	945	$	(139)	$	4	$	7,366
CRE - owner occupied	12,942		22		1,388		(197)		5		14,160
CRE - non-owner occupied	46,627		1		2,828		—		348		49,804
Residential real estate	41,687		60		686		(174)		59		42,318
Commercial and financial	27,109		18		2,411		(4,431)		1,454		26,561
Consumer	7,263		5		113		(371)		234		7,244
Totals	$	142,184	$	106	$	8,371	$	(5,312)	$	2,104	$	147,453

	Nine Months Ended September 30, 2026
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	9,740	$	—	$	(782)	$	(34)	$	120	$	9,044
CRE - owner occupied	16,528		—		7,206		(45)		229		23,918
CRE - non-owner occupied	56,143		8,399		2,254		(1,068)		161		65,889
Residential real estate	51,297		—		(419)		(355)		56		50,579
Commercial and financial	37,943		—		7,105		(11,628)		1,574		34,994
Consumer	7,152		—		691		(1,693)		781		6,931
Totals	$	178,803	$	8,399	$	16,055	$	(14,823)	$	2,921	$	191,355

	Nine Months Ended September 30, 2025
(In thousands)	Beginning Balance		Allowance on  PCD Loans Acquired		Provision for Credit Losses		Charge- Offs		Recoveries		Ending Balance
Construction and land development	$	7,252	$	—	$	241	$	(139)	$	12	$	7,366
CRE - owner occupied	11,825		22		2,503		(197)		7		14,160
CRE - non-owner occupied	43,866		1		4,761		(320)		1,496		49,804
Residential real estate	39,168		60		3,390		(400)		100		42,318
Commercial and financial	27,533		18		10,748		(14,163)		2,425		26,561
Consumer	8,411		5		357		(2,296)		767		7,244
Totals	$	138,055	$	106	$	22,000	$	(17,515)	$	4,807	$	147,453

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Derivatives (Tables)

9 Months Ended

Sep. 30, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

(In thousands)	Notional Amount		Fair Value		Balance Sheet Category
September 30, 2026
Interest rate contracts1	$	1,390,910	$	39,850	Other assets and Other liabilities
Residential mortgage fair value hedges	250,000		580		Other assets
Interest rate cash flow hedges	500,000		9,358		Other assets
IRLCs	7,673		123		Other liabilities
Forward TBA mortgage-backed securities	7,149		149		Other assets
Forward loan sale commitments	2,019		30		Other liabilities
December 31, 2025
Interest rate contracts1	$	1,152,442	$	25,009	Other assets and Other liabilities
Residential mortgage fair value hedges	400,000		380		Other liabilities
Interest rate caps cash flow hedges	300,000		3,064		Other assets
IRLCs	5,106		495		Other assets
Forward TBA mortgage-backed securities	5,122		94		Other liabilities
Forward loan sale commitments	285		51		Other assets
1Interest rate contracts include risk participation agreements with notional amounts of $131.4 million and $65.3 million at September 30, 2026, and December 31, 2025, respectively with nominal fair value in both periods.

The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges.

	Carrying amount of the hedged items				Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
(In thousands)	September 30, 2026		December 31, 2025		September 30, 2026		December 31, 2025
Loans, net1	$	1,420,491	$	1,043,345	$	(577)	$	559
1These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2026, the portfolio layer method was $250 million, of which $250 million was designated as hedged. At December 31, 2025, the portfolio layer method was $400 million, of which $400 million was designated as hedged.

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Securities Sold Under Agreements to Repurchase (Tables)

9 Months Ended

Sep. 30, 2026

Broker-Dealer [Abstract]

Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged

Company securities pledged were as follows by collateral type and maturity, as of: 

(In thousands)	September 30, 2026		December 31, 2025
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities	$	559,024	$	512,066

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Fair Value (Tables)

9 Months Ended

Sep. 30, 2026

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis

Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2026 and December 31, 2025 included:

(In thousands)	Fair Value Measurements		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
At September 30, 2026
Financial Assets
Debt securities AFS1	$	4,634,355	$	100	$	4,634,255	$	—
Derivative financial instruments2	49,937		—		49,937		—
Loans held for sale2	14,462		—		14,462		—
OREO3	3,263		—		—		3,263
Equity securities4	13,255		13,255		—		—
MSR5	29,398		—		—		29,398
Financial Liabilities
Derivative financial instruments2	$	40,003	$	—	$	39,850	$	153
At December 31, 2025
Financial Assets
Debt securities AFS1	$	5,164,567	$	200	$	5,164,367	$	—
Derivative financial instruments2	28,620		—		28,125		495
Loans held for sale2	16,297		—		16,297		—
OREO3	4,250		—		—		4,250
Equity securities4	13,923		13,923		—		—
MSR5	28,061		—		—		28,061
Financial Liabilities
Derivative financial instruments2	$	25,483	$	—	$	25,389	$	94
1See “Note 3 – Securities” for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data for level 2 inputs. Level 3 inputs utilize a market approach that incorporates a pull-through rate assumption.
3Fair value is measured on a nonrecurring basis.
4Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other assets. Recurring fair value basis is determined using market quotations with fair value adjustments recognized in earnings.
5Recurring fair value basis determined using unobservable market data. Refer to “Note 8 - Goodwill and Acquired Intangible Assets” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 for additional details on assumptions utilized.

Schedule of Changes in Mortgage Servicing Rights

The following table presents changes in the Company's MSRs measured at fair value for the three and nine months ended September 30, 2026. There was no MSR balance during the three and nine months ended September 30, 2025:

	Three Months Ended		Nine Months Ended
(In thousands)	September 30, 2026
Carrying value at beginning of period	$	26,784	$	28,061
Originated servicing rights capitalized upon sale of loan	517		1,448
Change in fair value:
Due to payoffs/paydowns	(689)		(2,172)
Due to change in valuation inputs or assumptions	2,786		2,061
Carrying value at end of period	$	29,398	$	29,398

Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets

The following table presents data and key economic assumptions, as well as the valuation's sensitivity to interest rate fluctuations, related to the Company’s MSRs as of:

(In thousands)	September 30, 2026			December 31, 2025
Unpaid principal balance	$	2,365,165		$	2,540,798
Prepayment rate assumptions:
Weighted-average	9.58		%	12.74		%
Estimated impact on fair value of a 10% increase	$	(1,182)		$	(1,373)
Estimated impact on fair value of a 20% increase	(2,282)			(2,639)
Option-adjusted spread:
Weighted-average	5.50		%	5.50		%
Estimated impact on fair value of a 100 basis point increase	$	(1,201)		$	(1,163)
Estimated impact on fair value of a 200 basis point increase	(2,306)			(2,232)
Weighted-average coupon interest rate	4.78		%	4.78		%
Weighted-average servicing fee	0.25			0.25
Weighted-average remaining maturity (in months)	349			348

Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis

The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2026 and December 31, 2025 is as follows:

(In thousands)	Carrying Amount		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
September 30, 2026
Financial Assets
HTM debt securities1	$	552,982	$	—	$	435,311	$	—
Loans, net	13,382,856		—		147,248		12,837,275
Financial Liabilities
Deposits	16,580,159		—		—		16,580,540
FHLB and other borrowings	985,000		—		984,948		—
Subordinated debt	95,693		—		94,099		—
December 31, 2025
Financial Assets
HTM debt securities1	$	586,178	$	—	$	489,560	$	—
Time deposits with other banks	14,424		—		13,455		—
Loans, net	12,449,181		—		—		12,263,824
Financial Liabilities
Deposits	16,256,343		—		—		16,257,291
FHLB and other borrowings	835,000		—		833,483		—
Subordinated debt	95,161		—		90,248		—
1See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories.

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Business Combinations (Tables)

9 Months Ended

Sep. 30, 2026

Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]

Schedule of Business Acquisitions

(In thousands, except per share data)	October 1, 2025
Number of VBI shares receiving stock	550
Per share exchange ratio for VBI shares receiving stock	38.5000
Number of shares of SBCF common stock issued	9,923
Number of shares of SBCF preferred stock issued1	11
Multiplied by SBCF price per share at October 1, 2025	$	30.50
Total Value of SBCF common and preferred stock issued	$	645,785
Number of VBI shares receiving cash	183
Per share exchange ratio for VBI shares receiving cash	$	1,000.00
Cash consideration paid to VBI shareholders, including cash paid for fractional shares	183,360
Total purchase price	$	829,145
1Preferred stock is 1/1000th share for every share of common stock.

(In thousands, except per share data)	July 11, 2025
Number of Heartland shares receiving stock	378
Per share exchange ratio for Heartland shares receiving stock	4.9263
Number of shares of SBCF common stock issued	1,862
Multiplied by SBCF price per share at July 11, 2025	$	29.29
Value of SBCF common stock issued	$	54,547
Number of Heartland shares receiving cash	378
Per share cash consideration for Heartland shares receiving cash	$	147.10
Cash consideration paid to Heartland shareholders, including cash paid for fractional shares	$	55,623
Cash paid to Heartland option holders	1,054
Total purchase price	$	111,224

Schedule of Fair Value of Assets Acquired and Liabilities Assumed

The table below presents the allocation of the purchase consideration.

(In thousands)	Initially Measured October 1, 2025		Measurement Period Adjustments		As Adjusted October 1, 2025
Assets:
Cash and cash equivalents	$	166,758	$	—	$	166,758
Investment securities	2,540,434		(42)		2,540,392
Loans	1,202,389		(9,051)		1,193,338
Bank premises and equipment	45,942		—		45,942
CDI	110,548		—		110,548
Goodwill	280,087		7,419		287,506
Other assets	99,776		—		99,776
Total Assets	$	4,445,934	$	(1,674)	$	4,444,260
Liabilities:
Deposits	$	3,450,869	$	—	$	3,450,869
Securities sold under agreements to repurchase	105,064		—		105,064
Other liabilities	60,856		(1,674)		59,182
Total Liabilities	$	3,616,789	$	(1,674)	$	3,615,115

The table below presents the allocation of the purchase consideration.

(In thousands)	July 11, 2025
Assets:
Cash and cash equivalents	$	242,672
Investment securities	357,905
Loans	153,294
Bank premises and equipment	7,926
CDI	20,922
Goodwill	22,228
Other assets	18,590
Total Assets	$	823,537
Liabilities:
Deposits	$	705,195
Other liabilities	7,118
Total Liabilities	$	712,313

Schedule of Fair Value of Acquired Loans and Unpaid Principal Balance

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.

	October 1, 2025
(In thousands)	Book Balance		Fair Value
Loans:
Construction and land development	$	102,067	$	90,149
CRE - owner occupied	93,284		90,147
CRE - non-owner occupied	361,699		335,761
Residential real estate	365,935		349,786
Commercial and financial	335,831		322,276
Consumer	5,332		5,219
Total acquired loans	$	1,264,148	$	1,193,338

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.

	July 11, 2025
(In thousands)	Book Balance		Fair Value
Loans:
Construction and land development	$	7,575	$	7,496
CRE - owner occupied	31,504		30,790
CRE - non-owner occupied	40,239		38,992
Residential real estate	52,960		51,434
Commercial and financial	21,104		21,029
Consumer	3,614		3,553
Total acquired loans	$	156,996	$	153,294

Schedule of Financing Receivable, Purchased with Credit Deterioration

The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination:

(In thousands)	Initially Measured October 1, 2025		Measurement Period Adjustments		As Adjusted October 1, 2025
Book balance of loans at acquisition	$	148,575	$	43,195	$	191,770
ACL at acquisition	(3,026)		(8,400)		(11,426)
Non-credit related discount	(19,198)		(300)		(19,498)
Total PCD loans acquired	$	126,351	$	34,495	$	160,846

Schedule of Pro-Forma Information

The table below presents pro-forma data as if the acquisition of VBI occurred at the beginning of 2025. The pro-forma information is presented for illustrative purposes only and is not necessarily indicative of the results of operations that would have occurred if the transactions had been effected on the assumed dates.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2026		2025		2026		2025
Net interest income	$	183,355	$	166,135	$	540,220	$	470,955
Net income available to common shareholders	57,730		48,297		144,884		122,202
EPS - diluted	0.55		0.46		1.39		1.17
EPS - basic	$	0.56	$	0.46	$	1.40	$	1.18

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Earnings per Share - Narrative (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Earnings Per Share [Abstract]
Antidilutive securities excluded from diluted earnings per share calculation (in shares)	1,505	144,826	1,505	327,859

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Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Basic EPS
Net income	$ 59,868	$ 36,467	$ 151,298	$ 110,618
Less preferred stock dividends	(2,138)	0	(6,414)	0
Net income available to common shareholders	57,730	36,467	144,884	110,618
Less allocation of earnings to preferred stock	(4,126)	0	(9,388)	0
Net income available to common shareholders after allocation of earnings to preferred stock	$ 53,604	$ 36,467	$ 135,496	$ 110,618
Average common shares outstanding (in shares)	96,269	86,619	96,514	85,398
Net income per share (in dollars per share)	$ 0.56	$ 0.42	$ 1.40	$ 1.30
Diluted EPS
Net income available to common shareholders	$ 57,730	$ 36,467	$ 144,884	$ 110,618
Less allocation of earnings to preferred stock	(4,089)	0	(9,304)	0
Net income available to common shareholders after allocation of earnings to preferred stock	$ 53,641	$ 36,467	$ 135,580	$ 110,618
Average common shares outstanding (in shares)	96,269	86,619	96,514	85,398
Add: Dilutive effect of employee restricted stock and stock options (in shares)	968	806	973	756
Average diluted shares outstanding (in shares)	97,237	87,425	97,487	86,154
Net income per share (in dollars per share)	$ 0.55	$ 0.42	$ 1.39	$ 1.28

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Securities - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
AFS Debt Securities
Available for sale, amortized cost, total	$ 4,983,039	$ 5,266,294
Available for sale, gross unrealized gains	1,078	48,658
Available for sale, gross unrealized losses	(349,762)	(150,385)
Available for sale, fair value	4,634,355	5,164,567
HTM Debt Securities
Held to maturity, amortized cost, total	552,982	586,178
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	(117,671)	(96,618)
Held to maturity, fair value	435,311	489,560
U.S. Treasury securities and obligations of U.S. government agencies
AFS Debt Securities
Available for sale, amortized cost, total	60,756	54,831
Available for sale, gross unrealized gains	8	365
Available for sale, gross unrealized losses	(2,702)	(451)
Available for sale, fair value	58,062	54,745
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
AFS Debt Securities
Available for sale, amortized cost, total	3,728,834	3,681,499
Available for sale, gross unrealized gains	195	41,388
Available for sale, gross unrealized losses	(297,828)	(135,388)
Available for sale, fair value	3,431,201	3,587,499
HTM Debt Securities
Held to maturity, amortized cost, total	466,721	498,931
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	(109,805)	(90,696)
Held to maturity, fair value	356,916	408,235
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
AFS Debt Securities
Available for sale, amortized cost, total	284,625	395,165
Available for sale, gross unrealized gains	207	4,636
Available for sale, gross unrealized losses	(11,177)	(5,928)
Available for sale, fair value	273,655	393,873
HTM Debt Securities
Held to maturity, amortized cost, total	86,261	87,247
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	(7,866)	(5,922)
Held to maturity, fair value	78,395	81,325
Private mortgage-backed securities and collateralized mortgage obligations
AFS Debt Securities
Available for sale, amortized cost, total	81,000	131,846
Available for sale, gross unrealized gains	108	561
Available for sale, gross unrealized losses	(6,590)	(5,010)
Available for sale, fair value	74,518	127,397
CLOs
AFS Debt Securities
Available for sale, amortized cost, total	317,266	423,864
Available for sale, gross unrealized gains	508	636
Available for sale, gross unrealized losses	(858)	(512)
Available for sale, fair value	316,916	423,988
Obligations of state and political subdivisions
AFS Debt Securities
Available for sale, amortized cost, total	333,779	336,417
Available for sale, gross unrealized gains	0	651
Available for sale, gross unrealized losses	(23,647)	(2,520)
Available for sale, fair value	310,132	334,548
Other debt securities
AFS Debt Securities
Available for sale, amortized cost, total	176,779	242,672
Available for sale, gross unrealized gains	52	421
Available for sale, gross unrealized losses	(6,960)	(576)
Available for sale, fair value	$ 169,871	$ 242,517

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Securities - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities	$ 234,000,000.0		$ 511,100,000
Gross losses from sale of securities	100,000		39,600,000
Unrealized losses on mortgage backed securities of government sponsored entities	349,762,000		349,762,000		$ 150,385,000
Fair value of securities in unrealized loss position	4,445,392,000		4,445,392,000		2,040,898,000
Held-to-maturity securities, allowance for credit loss	0		0
Federal home loan bank and federal reserve stock recorded in other assets	143,900,000		143,900,000		135,600,000
Accrued interest receivable on AFS debt securities	22,500,000		22,500,000		24,500,000
Accrued interest receivable on HTM debt securities	900,000		900,000		1,000,000.0
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Fair value of debt securities pledged as collateral	2,200,000,000		2,200,000,000
Other debt securities
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities		$ 19,800,000		$ 19,800,000
Gross losses from sale of securities		1,000,000.0		1,000,000.0
Unrealized losses on mortgage backed securities of government sponsored entities	6,960,000		6,960,000		576,000
Fair value of securities in unrealized loss position	153,813,000		153,813,000		132,345,000
CRA - Qualified Mutual Fund
Debt Securities, Available-for-sale [Line Items]
Gross losses from sale of securities	500,000		700,000
Gross gains from sale of securities		100,000		$ 400,000
Investment in mutual fund carried at fair value	13,300,000		13,300,000		13,900,000
U.S. Treasury securities and obligations of U.S. government agencies
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	2,702,000		2,702,000		451,000
Fair value of securities in unrealized loss position	55,192,000		55,192,000		35,778,000
Allowance for credit losses on AFS debt securities	0		0
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	309,000,000.0		309,000,000.0
Fair value of securities in unrealized loss position	3,600,000,000		3,600,000,000
Allowance for credit losses on AFS debt securities	0		0
Private mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	6,590,000		6,590,000		5,010,000
Fair value of securities in unrealized loss position	71,533,000		71,533,000		77,798,000
Allowance for credit losses on AFS debt securities	$ 0		$ 0
Average credit support percentage	22.00%		22.00%
CLOs
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	$ 858,000		$ 858,000		512,000
Fair value of securities in unrealized loss position	241,439,000		241,439,000		249,934,000
Allowance for credit losses on AFS debt securities	$ 0		$ 0
CLOs | Standard & Poor's, AAA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total	37.00%		37.00%
CLOs | Standard & Poor's, AA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total	23.00%		23.00%
Obligations of state and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	$ 23,647,000		$ 23,647,000		2,520,000
Fair value of securities in unrealized loss position	310,132,000		310,132,000		$ 249,898,000
Allowance for credit losses on AFS debt securities	$ 0		$ 0
Heartland Bancshares, Inc
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities		$ 245,700,000

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Securities - Schedule of Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Amortized Cost
Due in less than one year	$ 0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	0
Held to maturity loans with maturity date, amortized cost, total	0
Held to maturity, amortized cost, total	552,982	$ 586,178
Fair Value
Due in less than one year	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	0
Held to maturity loans with maturity date, fair value, total	0
Held to maturity, fair value, total	435,311	489,560
Amortized Cost
Due in less than one year	6,265
Due after one year through five years	2,993
Due after five years through ten years	50,352
Due after ten years	334,925
Available for sale loans with maturity date, amortized cost, total	394,535
Available for sale, amortized cost, total	4,983,039	5,266,294
Fair Value
Due in less than one year	6,260
Due after one year through five years	2,921
Due after five years through ten years	46,655
Due after ten years	312,358
Available for sale loans with maturity date, fair value, total	368,194
Available for sale, fair value, total	4,634,355	5,164,567
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	466,721
Held to maturity, amortized cost, total	466,721	498,931
Fair Value
Loans without single maturity date	356,916
Held to maturity, fair value, total	356,916	408,235
Amortized Cost
Loans without single maturity date	3,728,834
Available for sale, amortized cost, total	3,728,834	3,681,499
Fair Value
Loans without single maturity date	3,431,201
Available for sale, fair value, total	3,431,201	3,587,499
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	86,261
Held to maturity, amortized cost, total	86,261	87,247
Fair Value
Loans without single maturity date	78,395
Held to maturity, fair value, total	78,395	81,325
Amortized Cost
Loans without single maturity date	284,625
Available for sale, amortized cost, total	284,625	395,165
Fair Value
Loans without single maturity date	273,655
Available for sale, fair value, total	273,655	393,873
Private mortgage-backed securities and collateralized mortgage obligations
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	81,000
Available for sale, amortized cost, total	81,000	131,846
Fair Value
Loans without single maturity date	74,518
Available for sale, fair value, total	74,518	127,397
CLOs
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	317,266
Available for sale, amortized cost, total	317,266	423,864
Fair Value
Loans without single maturity date	316,916
Available for sale, fair value, total	316,916	423,988
Other debt securities
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	176,779
Available for sale, amortized cost, total	176,779	242,672
Fair Value
Loans without single maturity date	169,871
Available for sale, fair value, total	$ 169,871	$ 242,517

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Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) $ in Thousands	Sep. 30, 2026 USD ($)	Dec. 31, 2025 USD ($) security
Fair Value
Less Than 12 Months	$ 3,853,887	$ 1,079,884
12 Months or Longer	591,505	961,014
Total	4,445,392	2,040,898
Unrealized Losses
Less Than 12 Months	(218,891)	(4,059)
12 Months or Longer	(130,871)	(146,326)
Total	(349,762)	$ (150,385)
Number of individual securities | security		383
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	46,460	$ 21,846
12 Months or Longer	8,732	13,932
Total	55,192	35,778
Unrealized Losses
Less Than 12 Months	(2,252)	(31)
12 Months or Longer	(450)	(420)
Total	(2,702)	(451)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	2,995,789	378,739
12 Months or Longer	398,717	730,551
Total	3,394,506	1,109,290
Unrealized Losses
Less Than 12 Months	(182,019)	(1,625)
12 Months or Longer	(115,809)	(133,763)
Total	(297,828)	(135,388)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	150,581	90,765
12 Months or Longer	68,196	95,090
Total	218,777	185,855
Unrealized Losses
Less Than 12 Months	(4,669)	(61)
12 Months or Longer	(6,508)	(5,867)
Total	(11,177)	(5,928)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	7,924	969
12 Months or Longer	63,609	76,829
Total	71,533	77,798
Unrealized Losses
Less Than 12 Months	(231)	(1)
12 Months or Longer	(6,359)	(5,009)
Total	(6,590)	(5,010)
CLOs
Fair Value
Less Than 12 Months	194,479	211,052
12 Months or Longer	46,960	38,882
Total	241,439	249,934
Unrealized Losses
Less Than 12 Months	(627)	(320)
12 Months or Longer	(231)	(192)
Total	(858)	(512)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	304,841	244,168
12 Months or Longer	5,291	5,730
Total	310,132	249,898
Unrealized Losses
Less Than 12 Months	(22,133)	(1,445)
12 Months or Longer	(1,514)	(1,075)
Total	(23,647)	(2,520)
Other debt securities
Fair Value
Less Than 12 Months	153,813	132,345
12 Months or Longer	0	0
Total	153,813	132,345
Unrealized Losses
Less Than 12 Months	(6,960)	(576)
12 Months or Longer	0	0
Total	$ (6,960)	$ (576)

XML

Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 13,574,211	$ 12,627,984
Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,755,355	3,327,082
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	233,630	233,100
Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,585,226	9,067,802
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	946,988	723,930
Construction and land development | Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	56,285	141,326
Construction and land development | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	533	3,463
Construction and land development | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	890,170	579,141
CRE - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,177,048	2,043,625
CRE - owner occupied | Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	408,552	509,118
CRE - owner occupied | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	19,837	28,709
CRE - owner occupied | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,748,659	1,505,798
CRE - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,485,279	4,254,992
CRE - non-owner occupied | Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,010,223	1,193,351
CRE - non-owner occupied | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	171,761	150,452
CRE - non-owner occupied | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,303,295	2,911,189
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,281,455	3,098,859
Residential real estate | Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	862,235	963,836
Residential real estate | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	28,390	33,155
Residential real estate | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,390,830	2,101,868
Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,490,919	2,320,989
Commercial and financial | Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	376,240	476,130
Commercial and financial | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	12,805	16,821
Commercial and financial | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,101,874	1,828,038
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	192,522	185,589
Consumer | Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	41,820	43,321
Consumer | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	304	500
Consumer | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 150,398	$ 141,768

XML

Loans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items]
Net deferred costs	$ 48.3		$ 48.3		$ 46.3
Accrued interest receivable	50.1		50.1		45.7
Interest income on nonaccrual loans	$ 0.1	$ 0.1	1.9	$ 2.3
Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Remaining fair value adjustment for loans acquired			$ (120.8)		$ (150.0)
Percentage of fair value adjustment for loans acquired	(3.90%)		(3.90%)		(4.00%)

XML

Loans - Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financing Receivable, Past Due [Line Items]
Loans	$ 13,574,211	$ 12,627,984
Nonaccrual	73,283	72,001
Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,755,355	3,327,082
Nonaccrual	19,260	19,405
PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	233,630	233,100
Nonaccrual	15,917	20,443
Current
Financing Receivable, Past Due [Line Items]
Loans	13,473,480	12,522,825
Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,732,531	3,298,483
Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	215,891	210,073
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	18,622	26,161
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,319	4,051
Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	431	1,412
Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,990	6,755
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,942	5,019
Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,391	1,054
Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	3,836	242
Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	303	124
Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	118
Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	10,585,226	9,067,802
Nonaccrual	38,106	32,153
Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	10,525,058	9,014,269
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	16,872	20,698
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,657	682
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	3,533	0
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	946,988	723,930
Nonaccrual	1,782	6,019
Construction and land development | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	56,285	141,326
Nonaccrual	568	1,040
Construction and land development | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	533	3,463
Nonaccrual	471	3,365
Construction and land development | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	55,670	140,286
Construction and land development | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	62	98
Construction and land development | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	47	0
Construction and land development | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	890,170	579,141
Nonaccrual	743	1,614
Construction and land development | Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	889,348	577,467
Construction and land development | Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	79	60
Construction and land development | Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,177,048	2,043,625
Nonaccrual	13,241	20,666
CRE - owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	408,552	509,118
Nonaccrual	2,147	4,600
CRE - owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	19,837	28,709
Nonaccrual	496	1,838
CRE - owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	406,157	504,275
CRE - owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	19,273	26,652
CRE - owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	60	204
CRE - owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	188	39
CRE - owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	68	219
CRE - owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - owner occupied | Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	1,748,659	1,505,798
Nonaccrual	10,598	14,228
CRE - owner occupied | Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	1,735,842	1,489,257
CRE - owner occupied | Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,219	2,313
CRE - owner occupied | Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - owner occupied | Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	4,485,279	4,254,992
Nonaccrual	18,113	19,375
CRE - non-owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,010,223	1,193,351
Nonaccrual	5,482	5,969
CRE - non-owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	171,761	150,452
Nonaccrual	12,631	13,012
CRE - non-owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,003,595	1,187,231
CRE - non-owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	159,130	137,051
CRE - non-owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	151
CRE - non-owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	389
CRE - non-owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	843	0
CRE - non-owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - non-owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	303	0
CRE - non-owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
CRE - non-owner occupied | Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	3,303,295	2,911,189
Nonaccrual	0	394
CRE - non-owner occupied | Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	3,299,558	2,908,789
CRE - non-owner occupied | Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,262	1,735
CRE - non-owner occupied | Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	475	271
CRE - non-owner occupied | Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	3,281,455	3,098,859
Nonaccrual	27,368	12,102
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	862,235	963,836
Nonaccrual	9,370	5,088
Residential real estate | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	28,390	33,155
Nonaccrual	1,715	1,193
Residential real estate | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	851,390	954,820
Residential real estate | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	25,508	30,018
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,054	3,609
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	345	993
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	421	195
Residential real estate | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	822	833
Residential real estate | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	124
Residential real estate | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	118
Residential real estate | Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	2,390,830	2,101,868
Nonaccrual	16,283	5,821
Residential real estate | Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	2,368,819	2,091,065
Residential real estate | Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,682	4,618
Residential real estate | Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,046	364
Residential real estate | Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	2,490,919	2,320,989
Nonaccrual	10,936	11,051
Commercial and financial | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	376,240	476,130
Nonaccrual	172	527
Commercial and financial | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	12,805	16,821
Nonaccrual	595	1,035
Commercial and financial | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	375,499	470,768
Commercial and financial | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	11,707	15,786
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	91	50
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2	0
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	478	4,785
Commercial and financial | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	501	0
Commercial and financial | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial | Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	2,101,874	1,828,038
Nonaccrual	10,169	9,489
Commercial and financial | Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	2,082,207	1,807,012
Commercial and financial | Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,908	11,518
Commercial and financial | Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	57	19
Commercial and financial | Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	3,533	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans	192,522	185,589
Nonaccrual	1,843	2,788
Consumer | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	41,820	43,321
Nonaccrual	1,521	2,181
Consumer | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	304	500
Nonaccrual	9	0
Consumer | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	40,220	41,103
Consumer | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	211	468
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	67	37
Consumer | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	84	30
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	12	0
Consumer | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	2
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	150,398	141,768
Nonaccrual	313	607
Consumer | Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	149,284	140,679
Consumer | Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	722	454
Consumer | Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	79	28
Consumer | Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	$ 0	$ 0

XML

Loans - Schedule of Nonaccrual Loans by Loan Category (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	$ 42,806	$ 43,245
Nonaccrual Loans With an Allowance	30,477	28,756
Total Nonaccrual Loans	73,283	72,001
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	471	4,207
Nonaccrual Loans With an Allowance	1,311	1,812
Total Nonaccrual Loans	1,782	6,019
CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	7,191	15,546
Nonaccrual Loans With an Allowance	6,050	5,120
Total Nonaccrual Loans	13,241	20,666
CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	16,753	18,202
Nonaccrual Loans With an Allowance	1,360	1,173
Total Nonaccrual Loans	18,113	19,375
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	10,287	1,448
Nonaccrual Loans With an Allowance	17,081	10,654
Total Nonaccrual Loans	27,368	12,102
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	6,655	3,842
Nonaccrual Loans With an Allowance	4,281	7,209
Total Nonaccrual Loans	10,936	11,051
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	1,449	0
Nonaccrual Loans With an Allowance	394	2,788
Total Nonaccrual Loans	$ 1,843	$ 2,788

XML

Loans - Schedule of Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 1,980,621		$ 1,980,621		$ 2,103,118
One year prior to current fiscal year	2,167,612		2,167,612		1,690,049
Two years prior to current fiscal year	1,517,650		1,517,650		908,423
Three years prior to current fiscal year	807,145		807,145		1,991,362
Four years prior to current fiscal year	1,721,673		1,721,673		1,718,492
Prior	3,775,274		3,775,274		2,717,786
Revolving	1,504,847		1,504,847		1,401,340
Revolving Converted to Term	99,389		99,389		97,414
Total	13,574,211		13,574,211		12,627,984
Current fiscal year, Charge Offs			1,096		842
One year prior to current fiscal year, Charge Offs			2,167		201
Two years prior to current fiscal year, Charge Offs			736		262
Three years prior to current fiscal year, Charge Offs			2,728		3,752
Four years prior to current fiscal year, Charge Offs			1,648		1,573
Prior, Charge Offs			3,784		10,642
Revolving, Charge Offs			2,664		2,750
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	6,292	$ 5,312	14,823	$ 17,515	20,022
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	141,590		141,590		122,236
One year prior to current fiscal year	338,416		338,416		332,530
Two years prior to current fiscal year	282,580		282,580		61,041
Three years prior to current fiscal year	29,009		29,009		44,062
Four years prior to current fiscal year	20,970		20,970		42,999
Prior	39,891		39,891		32,368
Revolving	94,532		94,532		88,694
Revolving Converted to Term	0		0		0
Total	946,988		946,988		723,930
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		115
Three years prior to current fiscal year, Charge Offs			0		0
Four years prior to current fiscal year, Charge Offs			0		24
Prior, Charge Offs			34		17
Revolving, Charge Offs			0		0
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	0	139	34	139	156
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	141,590		141,590		121,237
One year prior to current fiscal year	338,416		338,416		332,530
Two years prior to current fiscal year	263,669		263,669		57,222
Three years prior to current fiscal year	29,009		29,009		41,967
Four years prior to current fiscal year	20,956		20,956		38,085
Prior	39,032		39,032		31,055
Revolving	92,012		92,012		87,508
Revolving Converted to Term	0		0		0
Total	924,684		924,684		709,604
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	18,911		18,911		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		4,914
Prior	204		204		348
Revolving	1,371		1,371		0
Revolving Converted to Term	0		0		0
Total	20,486		20,486		5,262
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		999
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		3,819
Three years prior to current fiscal year	0		0		2,095
Four years prior to current fiscal year	14		14		0
Prior	655		655		965
Revolving	1,149		1,149		1,186
Revolving Converted to Term	0		0		0
Total	1,818		1,818		9,064
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Revolving Converted to Term	0		0		0
Total	0		0		0
CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	385,545		385,545		405,841
One year prior to current fiscal year	363,132		363,132		191,291
Two years prior to current fiscal year	188,018		188,018		170,414
Three years prior to current fiscal year	155,033		155,033		254,833
Four years prior to current fiscal year	223,284		223,284		249,271
Prior	826,963		826,963		741,620
Revolving	35,073		35,073		30,355
Revolving Converted to Term	0		0		0
Total	2,177,048		2,177,048		2,043,625
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		0
Three years prior to current fiscal year, Charge Offs			23		238
Four years prior to current fiscal year, Charge Offs			16		0
Prior, Charge Offs			6		490
Revolving, Charge Offs			0		0
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	23	197	45	197	728
CRE - owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	385,545		385,545		405,841
One year prior to current fiscal year	361,825		361,825		180,447
Two years prior to current fiscal year	178,481		178,481		156,256
Three years prior to current fiscal year	141,989		141,989		235,989
Four years prior to current fiscal year	209,209		209,209		241,758
Prior	793,244		793,244		703,744
Revolving	34,507		34,507		29,882
Revolving Converted to Term	0		0		0
Total	2,104,800		2,104,800		1,953,917
CRE - owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		7,380
Two years prior to current fiscal year	0		0		2,816
Three years prior to current fiscal year	862		862		966
Four years prior to current fiscal year	7,066		7,066		5,319
Prior	10,269		10,269		12,838
Revolving	400		400		398
Revolving Converted to Term	0		0		0
Total	18,597		18,597		29,717
CRE - owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,307		1,307		3,464
Two years prior to current fiscal year	9,537		9,537		11,342
Three years prior to current fiscal year	12,182		12,182		17,878
Four years prior to current fiscal year	7,009		7,009		2,194
Prior	23,450		23,450		25,038
Revolving	166		166		75
Revolving Converted to Term	0		0		0
Total	53,651		53,651		59,991
CRE - owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Revolving Converted to Term	0		0		0
Total	0		0		0
CRE - non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	650,875		650,875		704,003
One year prior to current fiscal year	671,501		671,501		538,770
Two years prior to current fiscal year	506,115		506,115		327,090
Three years prior to current fiscal year	325,400		325,400		932,797
Four years prior to current fiscal year	828,923		828,923		570,947
Prior	1,475,214		1,475,214		1,150,283
Revolving	27,251		27,251		31,102
Revolving Converted to Term	0		0		0
Total	4,485,279		4,485,279		4,254,992
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		0
Three years prior to current fiscal year, Charge Offs			459		0
Four years prior to current fiscal year, Charge Offs			593		0
Prior, Charge Offs			16		420
Revolving, Charge Offs			0		0
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	0	0	1,068	320	420
CRE - non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	650,875		650,875		704,003
One year prior to current fiscal year	661,495		661,495		538,748
Two years prior to current fiscal year	453,804		453,804		318,106
Three years prior to current fiscal year	315,929		315,929		848,500
Four years prior to current fiscal year	784,362		784,362		552,105
Prior	1,438,435		1,438,435		1,084,106
Revolving	17,550		17,550		31,102
Revolving Converted to Term	0		0		0
Total	4,322,450		4,322,450		4,076,670
CRE - non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	8,798		8,798		22
Two years prior to current fiscal year	3,717		3,717		8,984
Three years prior to current fiscal year	9,111		9,111		44,738
Four years prior to current fiscal year	19,044		19,044		9,781
Prior	18,154		18,154		42,347
Revolving	902		902		0
Revolving Converted to Term	0		0		0
Total	59,726		59,726		105,872
CRE - non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,208		1,208		0
Two years prior to current fiscal year	48,594		48,594		0
Three years prior to current fiscal year	360		360		39,559
Four years prior to current fiscal year	25,517		25,517		9,061
Prior	18,625		18,625		23,830
Revolving	8,799		8,799		0
Revolving Converted to Term	0		0		0
Total	103,103		103,103		72,450
CRE - non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Revolving Converted to Term	0		0		0
Total	0		0		0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	404,347		404,347		272,509
One year prior to current fiscal year	230,546		230,546		197,560
Two years prior to current fiscal year	167,903		167,903		185,877
Three years prior to current fiscal year	163,138		163,138		480,228
Four years prior to current fiscal year	442,219		442,219		615,787
Prior	1,099,895		1,099,895		576,842
Revolving	674,018		674,018		672,642
Revolving Converted to Term	99,389		99,389		97,414
Total	3,281,455		3,281,455		3,098,859
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		0
Three years prior to current fiscal year, Charge Offs			0		145
Four years prior to current fiscal year, Charge Offs			164		210
Prior, Charge Offs			85		36
Revolving, Charge Offs			106		19
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	0	174	355	400	410
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	404,327		404,327		272,509
One year prior to current fiscal year	229,668		229,668		196,766
Two years prior to current fiscal year	166,970		166,970		185,686
Three years prior to current fiscal year	158,008		158,008		476,581
Four years prior to current fiscal year	438,877		438,877		610,708
Prior	1,084,947		1,084,947		569,549
Revolving	659,132		659,132		662,764
Revolving Converted to Term	96,352		96,352		96,123
Total	3,238,281		3,238,281		3,070,686
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	598		598		476
Two years prior to current fiscal year	0		0		78
Three years prior to current fiscal year	733		733		1,527
Four years prior to current fiscal year	0		0		0
Prior	1,684		1,684		663
Revolving	3,442		3,442		5,068
Revolving Converted to Term	772		772		174
Total	7,229		7,229		7,986
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	20		20		0
One year prior to current fiscal year	280		280		318
Two years prior to current fiscal year	933		933		113
Three years prior to current fiscal year	4,397		4,397		2,120
Four years prior to current fiscal year	3,342		3,342		5,079
Prior	13,264		13,264		6,630
Revolving	11,444		11,444		4,810
Revolving Converted to Term	2,265		2,265		1,117
Total	35,945		35,945		20,187
Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Revolving Converted to Term	0		0		0
Total	0		0		0
Commercial and financial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	384,744		384,744		582,118
One year prior to current fiscal year	552,247		552,247		416,136
Two years prior to current fiscal year	362,135		362,135		154,375
Three years prior to current fiscal year	129,152		129,152		257,738
Four years prior to current fiscal year	190,178		190,178		224,365
Prior	292,496		292,496		180,174
Revolving	579,967		579,967		506,083
Revolving Converted to Term	0		0		0
Total	2,490,919		2,490,919		2,320,989
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			2,111		0
Two years prior to current fiscal year, Charge Offs			611		85
Three years prior to current fiscal year, Charge Offs			2,106		2,075
Four years prior to current fiscal year, Charge Offs			786		1,231
Prior, Charge Offs			3,537		9,637
Revolving, Charge Offs			2,477		2,493
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	5,789	4,431	11,628	14,163	15,521
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	384,178		384,178		582,118
One year prior to current fiscal year	531,896		531,896		414,134
Two years prior to current fiscal year	357,048		357,048		151,321
Three years prior to current fiscal year	123,244		123,244		252,087
Four years prior to current fiscal year	183,234		183,234		215,002
Prior	266,614		266,614		167,651
Revolving	554,280		554,280		495,663
Revolving Converted to Term	0		0		0
Total	2,400,494		2,400,494		2,277,976
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	351		351		0
One year prior to current fiscal year	7,885		7,885		1,286
Two years prior to current fiscal year	1,693		1,693		110
Three years prior to current fiscal year	2,852		2,852		584
Four years prior to current fiscal year	3,280		3,280		2,229
Prior	1,622		1,622		6,312
Revolving	3,249		3,249		3,570
Revolving Converted to Term	0		0		0
Total	20,932		20,932		14,091
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	215		215		0
One year prior to current fiscal year	12,466		12,466		716
Two years prior to current fiscal year	3,394		3,394		2,944
Three years prior to current fiscal year	3,056		3,056		5,067
Four years prior to current fiscal year	3,664		3,664		6,538
Prior	24,260		24,260		6,211
Revolving	22,438		22,438		6,850
Revolving Converted to Term	0		0		0
Total	69,493		69,493		28,326
Commercial and financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		596
Prior	0		0		0
Revolving	0		0		0
Revolving Converted to Term	0		0		0
Total	0		0		596
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	13,520		13,520		16,411
One year prior to current fiscal year	11,770		11,770		13,762
Two years prior to current fiscal year	10,899		10,899		9,626
Three years prior to current fiscal year	5,413		5,413		21,704
Four years prior to current fiscal year	16,099		16,099		15,123
Prior	40,815		40,815		36,499
Revolving	94,006		94,006		72,464
Revolving Converted to Term	0		0		0
Total	192,522		192,522		185,589
Current fiscal year, Charge Offs			1,096		842
One year prior to current fiscal year, Charge Offs			56		201
Two years prior to current fiscal year, Charge Offs			125		62
Three years prior to current fiscal year, Charge Offs			140		1,294
Four years prior to current fiscal year, Charge Offs			89		108
Prior, Charge Offs			106		42
Revolving, Charge Offs			81		238
Revolving Converted to Term, Charge Offs			0		0
Total, Charge Offs	480	$ 371	1,693	$ 2,296	2,787
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	13,446		13,446		16,392
One year prior to current fiscal year	11,605		11,605		13,716
Two years prior to current fiscal year	10,488		10,488		9,603
Three years prior to current fiscal year	5,393		5,393		19,441
Four years prior to current fiscal year	14,477		14,477		15,123
Prior	40,411		40,411		36,026
Revolving	93,836		93,836		72,246
Revolving Converted to Term	0		0		0
Total	189,656		189,656		182,547
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	11		11		15
One year prior to current fiscal year	73		73		33
Two years prior to current fiscal year	411		411		0
Three years prior to current fiscal year	4		4		2
Four years prior to current fiscal year	97		97		0
Prior	247		247		12
Revolving	59		59		168
Revolving Converted to Term	0		0		0
Total	902		902		230
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	63		63		4
One year prior to current fiscal year	92		92		13
Two years prior to current fiscal year	0		0		23
Three years prior to current fiscal year	16		16		2,261
Four years prior to current fiscal year	1,525		1,525		0
Prior	157		157		461
Revolving	111		111		50
Revolving Converted to Term	0		0		0
Total	1,964		1,964		2,812
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Revolving Converted to Term	0		0		0
Total	$ 0		$ 0		$ 0

XML

Loans - Schedule of Troubled Borrower Modifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 506	$ 964	$ 1,374	$ 2,960
% of Total Class of Loans	0.00%	0.01%	0.01%	0.03%
Nonaccrual loans modified	$ 972	$ 773	$ 972	$ 773
Loans modified	2,010	3,189	2,010	3,189
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	969	2,416	969	2,416
Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	69	0	69	0
Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0	0	136
Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	506	964	1,374	2,824
CRE - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		$ 132	$ 45	$ 201
% of Total Class of Loans		0.01%	0.00%	0.01%
Nonaccrual loans modified	0	$ 132	$ 0	$ 132
Loans modified	280	201	280	201
CRE - owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	280	69	280	69
CRE - owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
CRE - owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
CRE - owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
CRE - owner occupied | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		0	0	69
CRE - owner occupied | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		132	45	132
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 506	$ 83	$ 698	$ 300
% of Total Class of Loans	0.02%	0.00%	0.02%	0.01%
Nonaccrual loans modified	$ 888	$ 472	$ 888	$ 472
Loans modified	908	529	908	529
Residential real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	20	57	20	57
Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Residential real estate | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0	0	0
Residential real estate | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	506	83	698	300
Commercial and financial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		$ 745	$ 627	$ 2,455
% of Total Class of Loans		0.04%	0.03%	0.14%
Nonaccrual loans modified	84	$ 165	$ 84	$ 165
Loans modified	818	2,455	818	2,455
Commercial and financial | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	665	2,290	665	2,290
Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	69	0	69	0
Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Commercial and financial | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		0	0	67
Commercial and financial | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		745	627	2,388
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		$ 4	$ 4	$ 4
% of Total Class of Loans		0.00%	0.00%	0.00%
Nonaccrual loans modified	0	$ 4	$ 0	$ 4
Loans modified	4	4	4	4
Consumer | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	4	0	4	0
Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0	0	0
Consumer | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	$ 0	0	0	0
Consumer | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		0	0	0
Consumer | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		$ 4	$ 4	$ 4

XML

Allowance for Credit Losses - Schedule of Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 182,050	$ 142,184	$ 178,803	$ 138,055	$ 138,055
Allowance on PCD Loans Acquired	8,399	106	8,399	106
Provision for Credit Losses	6,297	8,371	16,055	22,000
Charge- Offs	(6,292)	(5,312)	(14,823)	(17,515)	(20,022)
Recoveries	901	2,104	2,921	4,807
Ending Balance	191,355	147,453	191,355	147,453	178,803
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,641	6,556	9,740	7,252	7,252
Allowance on PCD Loans Acquired	0	0	0	0
Provision for Credit Losses	388	945	(782)	241
Charge- Offs	0	(139)	(34)	(139)	(156)
Recoveries	15	4	120	12
Ending Balance	9,044	7,366	9,044	7,366	9,740
CRE - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	23,033	12,942	16,528	11,825	11,825
Allowance on PCD Loans Acquired	0	22	0	22
Provision for Credit Losses	907	1,388	7,206	2,503
Charge- Offs	(23)	(197)	(45)	(197)	(728)
Recoveries	1	5	229	7
Ending Balance	23,918	14,160	23,918	14,160	16,528
CRE - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	55,775	46,627	56,143	43,866	43,866
Allowance on PCD Loans Acquired	8,399	1	8,399	1
Provision for Credit Losses	1,678	2,828	2,254	4,761
Charge- Offs	0	0	(1,068)	(320)	(420)
Recoveries	37	348	161	1,496
Ending Balance	65,889	49,804	65,889	49,804	56,143
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	50,120	41,687	51,297	39,168	39,168
Allowance on PCD Loans Acquired	0	60	0	60
Provision for Credit Losses	437	686	(419)	3,390
Charge- Offs	0	(174)	(355)	(400)	(410)
Recoveries	22	59	56	100
Ending Balance	50,579	42,318	50,579	42,318	51,297
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	37,379	27,109	37,943	27,533	27,533
Allowance on PCD Loans Acquired	0	18	0	18
Provision for Credit Losses	2,768	2,411	7,105	10,748
Charge- Offs	(5,789)	(4,431)	(11,628)	(14,163)	(15,521)
Recoveries	636	1,454	1,574	2,425
Ending Balance	34,994	26,561	34,994	26,561	37,943
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	7,102	7,263	7,152	8,411	8,411
Allowance on PCD Loans Acquired	0	5	0	5
Provision for Credit Losses	119	113	691	357
Charge- Offs	(480)	(371)	(1,693)	(2,296)	(2,787)
Recoveries	190	234	781	767
Ending Balance	$ 6,931	$ 7,244	$ 6,931	$ 7,244	$ 7,152

XML

Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
	Oct. 01, 2025	Sep. 30, 2026
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase of allowance for credit loss		$ 9,300
Percentage change in allowance for credit loss		5.10%
Loan held for investment		$ 191,400
Percentage of allowance for credit loss to outstanding		1.41%
Villages Bancorporation, Inc.
Financing Receivable, Allowance for Credit Loss [Line Items]
Measurement period adjustment, allowance for credit losses at acquisition	$ 8,400	$ 8,400

XML

Derivatives - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) derivativeInstrument
Interest rate cash flow hedges | Cash Flow Hedging
Derivative [Line Items]
Number of derivative instruments held | derivativeInstrument					3
Other comprehensive income	$ 5.3		$ 6.7
Other comprehensive income reclassified	0.1		0.4
Cash flow hedge gain (loss) to be reclassified within 12 months	1.0		1.0
Interest Rate Cap One | Cash Flow Hedging
Derivative [Line Items]
Notional amount					$ 100.0
Interest Rate Cap Two | Cash Flow Hedging
Derivative [Line Items]
Notional amount					100.0
Interest Rate Cap Three | Cash Flow Hedging
Derivative [Line Items]
Notional amount					$ 100.0
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Notional amount	200.0		200.0
Securities Interest Rate Swap
Derivative [Line Items]
Reclassification of fair value hedge losses from AOCI into income				$ 0.4
Fair value hedge gain (loss) reclassified				(0.5)
Residential mortgage fair value hedges
Derivative [Line Items]
Gain (loss) on derivative instruments	0.1	$ (0.5)	0.1	$ (0.4)
IRLCs
Derivative [Line Items]
Gain (loss) on derivative instruments	$ 0.3		$ (0.2)

XML

Derivatives - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Interest rate contracts | Balance Sheet Location [Axis]: us-gaap:OtherAssets
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 1,390,910	$ 1,152,442
Fair value of derivative assets and liabilities	39,850	25,009
Interest rate contracts | Balance Sheet Location [Axis]: us-gaap:OtherLiabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	1,390,910	1,152,442
Fair value of derivative assets and liabilities	(39,850)	(25,009)
Residential mortgage fair value hedges | Balance Sheet Location [Axis]: us-gaap:OtherAssets | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	250,000
Fair value of derivative assets and liabilities	580
Residential mortgage fair value hedges | Balance Sheet Location [Axis]: us-gaap:OtherLiabilities | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount		400,000
Fair value of derivative assets and liabilities		(380)
Interest rate cash flow hedges | Balance Sheet Location [Axis]: us-gaap:OtherAssets | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	500,000	300,000
Fair value of derivative assets and liabilities	9,358	3,064
IRLCs | Balance Sheet Location [Axis]: us-gaap:OtherAssets
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount		5,106
Fair value of derivative assets and liabilities		495
IRLCs | Balance Sheet Location [Axis]: us-gaap:OtherLiabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	7,673
Fair value of derivative assets and liabilities	(123)
Forward TBA mortgage-backed securities | Balance Sheet Location [Axis]: us-gaap:OtherAssets
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	7,149
Fair value of derivative assets and liabilities	149
Forward TBA mortgage-backed securities | Balance Sheet Location [Axis]: us-gaap:OtherLiabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount		5,122
Fair value of derivative assets and liabilities		(94)
Forward loan sale commitments | Balance Sheet Location [Axis]: us-gaap:OtherAssets
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount		285
Fair value of derivative assets and liabilities		51
Forward loan sale commitments | Balance Sheet Location [Axis]: us-gaap:OtherLiabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	2,019
Fair value of derivative assets and liabilities	(30)
Interest Rate Contract, Risk Participation Agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 131,400	$ 65,300

XML

Derivatives - Schedule of Fair Value Hedges (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Derivative [Line Items]
Portfolio layer method amount designated as hedged	$ 250,000	$ 400,000
Loans, net
Derivative [Line Items]
Carrying amount of the hedged items	1,420,491	1,043,345
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items	(577)	559
Amortized cost basis and unallocated basis adjustments used in hedging relationships	$ 250,000	$ 400,000

XML

Securities Sold Under Agreements to Repurchase (Details) - Asset Pledged as Collateral - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Fair value of pledged securities - overnight and continuous:
Fair value of debt securities pledged as collateral	$ 2,200,000
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities | Fair Value
Fair value of pledged securities - overnight and continuous:
Fair value of debt securities pledged as collateral	$ 559,024	$ 512,066

XML

Regulatory Capital (Details)	Sep. 30, 2026
Banking And Thrift Disclosure [Abstract]
Regulatory threshold percentage for well-capitalized institutions	0.065

XML

Fair Value - Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025
Financial Assets
Debt securities AFS	$ 4,634,355		$ 5,164,567
MSR	29,398	$ 26,784	28,061
Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	49,937		28,620
Loans held for sale	14,462		16,297
Equity securities	13,255		13,923
MSR	29,398		28,061
Financial Liabilities
Derivative financial instruments	40,003		25,483
Fair Value, Measurements, Nonrecurring
Financial Assets
OREO	3,263		4,250
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities AFS	100		200
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	0		0
Loans held for sale	0		0
Equity securities	13,255		13,923
MSR	0		0
Financial Liabilities
Derivative financial instruments	0		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring
Financial Assets
OREO	0		0
Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities AFS	4,634,255		5,164,367
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	49,937		28,125
Loans held for sale	14,462		16,297
Equity securities	0		0
MSR	0		0
Financial Liabilities
Derivative financial instruments	39,850		25,389
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring
Financial Assets
OREO	0		0
Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities AFS	0		0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	0		495
Loans held for sale	0		0
Equity securities	0		0
MSR	29,398		28,061
Financial Liabilities
Derivative financial instruments	153		94
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Financial Assets
OREO	$ 3,263		$ 4,250

XML

Fair Value - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unfunded commitments	$ 7.8	$ 8.7
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liquidation investment period	5 years
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liquidation investment period	10 years
Fair Value Measured at Net Asset Value Per Share
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Alternative investment	$ 24.4	26.4
Collateral-Dependent Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	$ 0.0	$ 0.0
IRLCs | Measurement Input, Weighted Average Pull Through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	0.96	0.94
IRLCs | Measurement Input, Weighted Average Current Reference Price
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	0.9832	1.0126
Forward loan sale commitments | Measurement Input, Weighted Average Pull Through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	1	1
Forward loan sale commitments | Measurement Input, Weighted Average Current Reference Price
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	0.9850	1.0112

XML

Fair Value - Schedule of Changes in Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2026
Servicing Asset at Fair Value, Amount [Roll Forward]
Carrying value at beginning of period	$ 26,784	$ 28,061
Originated servicing rights capitalized upon sale of loan	517	1,448
Change in fair value:
Due to payoffs/paydowns	(689)	(2,172)
Due to change in valuation inputs or assumptions	2,786	2,061
Carrying value at end of period	$ 29,398	$ 29,398

XML

Fair Value - Schedule of Data and Key Economic Assumptions Related to Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2026	Dec. 31, 2025
Fair Value Disclosures [Abstract]
Unpaid principal balance	$ 2,365,165	$ 2,540,798
Prepayment rate assumptions:
Weighted-average	9.58%	12.74%
Estimated impact on fair value of a 10% increase	$ (1,182)	$ (1,373)
Estimated impact on fair value of a 20% increase	$ (2,282)	$ (2,639)
Option-adjusted spread:
Weighted-average	5.50%	5.50%
Estimated impact on fair value of a 100 basis point increase	$ (1,201)	$ (1,163)
Estimated impact on fair value of a 200 basis point increase	$ (2,306)	$ (2,232)
Weighted-average coupon interest rate	4.78%	4.78%
Weighted-average servicing fee	0.25%	0.25%
Weighted-average remaining maturity (in months)	349 months	348 months

XML

Fair Value - Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financial Assets
HTM debt securities	$ 552,982	$ 586,178
Time deposits with other banks	498	14,424
Loans, net	13,382,856	12,449,181
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
HTM debt securities	0	0
Time deposits with other banks		0
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB and other borrowings	0	0
Subordinated debt	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
HTM debt securities	435,311	489,560
Time deposits with other banks		13,455
Loans, net	147,248	0
Financial Liabilities
Deposits	0	0
FHLB and other borrowings	984,948	833,483
Subordinated debt	94,099	90,248
Significant Unobservable Inputs (Level 3)
Financial Assets
HTM debt securities	0	0
Time deposits with other banks		0
Loans, net	12,837,275	12,263,824
Financial Liabilities
Deposits	16,580,540	16,257,291
FHLB and other borrowings	0	0
Subordinated debt	0	0
Carrying Value
Financial Assets
HTM debt securities	552,982	586,178
Time deposits with other banks		14,424
Loans, net	13,382,856	12,449,181
Financial Liabilities
Deposits	16,580,159	16,256,343
FHLB and other borrowings	985,000	835,000
Subordinated debt	$ 95,693	$ 95,161

XML

Business Combinations - Narrative (Details) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended
	Jul. 01, 2026 USD ($)	Oct. 01, 2025 USD ($) branch $ / shares	Jul. 11, 2025 USD ($) branch $ / shares	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Business Combination [Line Items]
Goodwill				$ 1,045,014		$ 1,045,014			$ 1,034,735
Allowance for credit losses				191,355	$ 147,453	191,355	$ 147,453	$ 182,050	$ 178,803	$ 142,184	$ 138,055
Allowance on PCD Loans Acquired				$ 8,399	$ 106	$ 8,399	$ 106
Villages Bancorporation, Inc.
Business Combination [Line Items]
Number of branches operated | branch		19
Percentage of common stock acquired		100.00%
Per share cash consideration for shares receiving cash (in dollars per share) | $ / shares		$ 1,000
Per share exchange ratio for shares receiving stock		38.5000
Acquiree shares receiving cash consideration		25.00%
Acquiree shares receiving stock consideration		75.00%
Common stock threshold of outstanding stock that will receive preferred stock		9.75%
Total consideration		$ 829,145
Goodwill		287,506
Allowance for credit losses		34,100
Allowance on PCD Loans Acquired		$ 11,400
Intangible assets weighted average useful life		10 years
Book value of loans with deterioration of credit quality		$ 160,846
Book balance of loans at acquisition		191,770
Customer relationship intangible asset		110,548
Villages Bancorporation, Inc. | Acquired Non-PCD Loans
Business Combination [Line Items]
Allowance for credit losses		$ 22,700
Heartland Bancshares, Inc
Business Combination [Line Items]
Number of branches operated | branch			4
Percentage of common stock acquired			100.00%
Per share cash consideration for shares receiving cash (in dollars per share) | $ / shares			$ 147.10
Per share exchange ratio for shares receiving stock			4.9263
Total consideration			$ 111,224
Goodwill			22,228
Allowance for credit losses			2,000
Allowance on PCD Loans Acquired			$ 100
Intangible assets weighted average useful life			10 years
Book value of loans with deterioration of credit quality			$ 7,200
Book balance of loans at acquisition			6,400
Customer relationship intangible asset			20,922
Heartland Bancshares, Inc | Acquired Non-PCD Loans
Business Combination [Line Items]
Allowance for credit losses			$ 1,900
W. L. Hunter Insurance Agency, LLC
Business Combination [Line Items]
Total consideration	$ 5,800
Goodwill	2,900
Goodwill deductible for tax purposes	0
W. L. Hunter Insurance Agency, LLC | Customer Relationships
Business Combination [Line Items]
Customer relationship intangible asset	$ 2,900
Intangible assets average useful life (in years)	10 years

XML

Business Combinations - Schedule of Purchase Price (Details) $ / shares in Units, shares in Thousands, $ in Thousands	Oct. 01, 2025 USD ($) $ / shares shares	Jul. 11, 2025 USD ($) $ / shares shares
Villages Bancorporation, Inc.
Business Combination [Line Items]
Number of shares receiving stock (in shares) | shares	550
Per share exchange ratio for shares receiving stock	38.5000
Multiplied by price per share (in dollars per share) | $ / shares	$ 30.50
Total Value of SBCF common and preferred stock issued | $	$ 645,785
Number of shares receiving cash (in shares) | shares	183
Per share cash consideration for shares receiving cash (in dollars per share) | $ / shares	$ 1,000
Cash consideration paid to shareholders, including cash paid for fractional shares | $	$ 183,360
Total purchase price | $	$ 829,145
Preferred stock to common stock ratio	0.001
Villages Bancorporation, Inc. | Common Stock
Business Combination [Line Items]
Number of shares of SBCF stock issued (in shares) | shares	9,923
Villages Bancorporation, Inc. | Preferred Stock
Business Combination [Line Items]
Number of shares of SBCF stock issued (in shares) | shares	11
Heartland Bancshares, Inc
Business Combination [Line Items]
Number of shares receiving stock (in shares) | shares		378
Per share exchange ratio for shares receiving stock		4.9263
Number of shares of SBCF stock issued (in shares) | shares		1,862
Multiplied by price per share (in dollars per share) | $ / shares		$ 29.29
Total Value of SBCF common and preferred stock issued | $		$ 54,547
Number of shares receiving cash (in shares) | shares		378
Per share cash consideration for shares receiving cash (in dollars per share) | $ / shares		$ 147.10
Cash consideration paid to shareholders, including cash paid for fractional shares | $		$ 55,623
Cash paid to option holders | $		1,054
Total purchase price | $		$ 111,224

XML

Business Combinations - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Oct. 01, 2025	Sep. 30, 2026	Dec. 31, 2025	Jul. 11, 2025
Assets:
Goodwill		$ 1,045,014	$ 1,034,735
Villages Bancorporation, Inc.
Assets:
Cash and cash equivalents	$ 166,758
Investment securities	2,540,392
Measurement Period Adjustments, , Investment securities	(42)
Loans	1,193,338
Measurement Period Adjustments, Loans	(9,051)
Bank premises and equipment	45,942
CDI	110,548
Goodwill	287,506
Measurement Period Adjustments, Goodwill	7,419
Other assets	99,776
Total Assets	4,444,260
Measurement Period Adjustments, Total Assets	(1,674)
Liabilities:
Deposits	3,450,869
Securities sold under agreements to repurchase	105,064
Other liabilities	59,182
Measurement Period Adjustments, Other Liabilities	(1,674)
Total Liabilities	3,615,115
Measurement Period Adjustments, Total Liabilities	(1,674)
Villages Bancorporation, Inc. | Initially Measured
Assets:
Cash and cash equivalents	166,758
Investment securities	2,540,434
Loans	1,202,389
Bank premises and equipment	45,942
CDI	110,548
Goodwill	280,087
Other assets	99,776
Total Assets	4,445,934
Liabilities:
Deposits	3,450,869
Securities sold under agreements to repurchase	105,064
Other liabilities	60,856
Total Liabilities	$ 3,616,789
Heartland Bancshares, Inc
Assets:
Cash and cash equivalents				$ 242,672
Investment securities				357,905
Loans				153,294
Bank premises and equipment				7,926
CDI				20,922
Goodwill				22,228
Other assets				18,590
Total Assets				823,537
Liabilities:
Deposits				705,195
Other liabilities				7,118
Total Liabilities				$ 712,313

XML

Business Combinations - Schedule of Fair Value of Acquired Loans (Details) - USD ($) $ in Thousands	Oct. 01, 2025	Jul. 11, 2025
Villages Bancorporation, Inc.
Business Combination [Line Items]
Book Balance	$ 1,264,148
Fair Value	1,193,338
Villages Bancorporation, Inc. | Construction and land development
Business Combination [Line Items]
Book Balance	102,067
Fair Value	90,149
Villages Bancorporation, Inc. | CRE - owner occupied
Business Combination [Line Items]
Book Balance	93,284
Fair Value	90,147
Villages Bancorporation, Inc. | CRE - non-owner occupied
Business Combination [Line Items]
Book Balance	361,699
Fair Value	335,761
Villages Bancorporation, Inc. | Residential real estate
Business Combination [Line Items]
Book Balance	365,935
Fair Value	349,786
Villages Bancorporation, Inc. | Commercial and financial
Business Combination [Line Items]
Book Balance	335,831
Fair Value	322,276
Villages Bancorporation, Inc. | Consumer
Business Combination [Line Items]
Book Balance	5,332
Fair Value	$ 5,219
Heartland Bancshares, Inc
Business Combination [Line Items]
Book Balance		$ 156,996
Fair Value		153,294
Heartland Bancshares, Inc | Construction and land development
Business Combination [Line Items]
Book Balance		7,575
Fair Value		7,496
Heartland Bancshares, Inc | CRE - owner occupied
Business Combination [Line Items]
Book Balance		31,504
Fair Value		30,790
Heartland Bancshares, Inc | CRE - non-owner occupied
Business Combination [Line Items]
Book Balance		40,239
Fair Value		38,992
Heartland Bancshares, Inc | Residential real estate
Business Combination [Line Items]
Book Balance		52,960
Fair Value		51,434
Heartland Bancshares, Inc | Commercial and financial
Business Combination [Line Items]
Book Balance		21,104
Fair Value		21,029
Heartland Bancshares, Inc | Consumer
Business Combination [Line Items]
Book Balance		3,614
Fair Value		$ 3,553

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Business Combinations - Schedule of Loans with Deterioration of Credit Quality (Details) - Villages Bancorporation, Inc. - USD ($) $ in Thousands		3 Months Ended
	Oct. 01, 2025	Sep. 30, 2026
Business Combination [Line Items]
Book balance of loans at acquisition	$ 191,770
Measurement Period Adjustments, Book balance of loans at acquisition	43,195
ACL at acquisition	(11,426)
Measurement Period Adjustments, ACL at acquisition	(8,400)	$ (8,400)
Non-credit related discount	(19,498)
Measurement Period Adjustments, Non-credit related discount	(300)
Total PCD loans acquired	160,846
Measurement Period Adjustments, Total PCD loans acquired	34,495
Initially Measured
Business Combination [Line Items]
Book balance of loans at acquisition	148,575
ACL at acquisition	(3,026)
Non-credit related discount	(19,198)
Total PCD loans acquired	$ 126,351

XML

Business Combinations - Schedule of Pro-Forma Information (Details) - Villages Bancorporation, Inc. - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Business Combination [Line Items]
Net interest income	$ 183,355	$ 166,135	$ 540,220	$ 470,955
Net income available to common shareholders	$ 57,730	$ 48,297	$ 144,884	$ 122,202
EPS - diluted (in dollars per share)	$ 0.55	$ 0.46	$ 1.39	$ 1.17
EPS - basic (in dollars per share)	$ 0.56	$ 0.46	$ 1.40	$ 1.18

XML

Business Segment (Details)	9 Months Ended
	Sep. 30, 2026 segment
Segment Reporting [Abstract]
Number of reportable segments	1