UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) ~~May~~July 1316, 2026

SIMMONS FIRST NATIONAL CORPORATION

(Exact name of registrant as specified in its charter)

Arkansas	0-6253	71-0407808
(State or other jurisdictionof incorporation)	(Commission File Number)	(I.R.S. EmployerIdentification No.)
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
501 Main Street, Pine Bluff, Arkansas		71601
(Address of principal executive offices)		(Zip Code)

(870) 541-1000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class		~~TradingSymbol~~Trading Symbol(s)		Name of each ~~exchangeon~~exchange on which registered
Common stock, par value $0.01 per share		SFNC		The Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). 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. ☐

Item 52.02 ~~Departure~~Results of ~~Directors~~Operations orand ~~Certain~~Financial ~~Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers~~Condition.

AsOn ~~discussed further below, on May~~July 1316, 2026, the ~~Simmons~~Registrant ~~First~~issued ~~National~~a ~~Corporation~~press ~~(“Corporation”)~~release, ~~held~~a ~~its~~copy ~~Annual Meeting~~ of ~~Shareholders (“Meeting”), at~~ which ~~five~~is ~~proposals~~attached ~~were~~hereto ~~submitted~~as toExhibit ~~the~~99.1 ~~Corporation’s~~and ~~shareholders~~is ~~for~~incorporated ~~consideration~~herein ~~and~~by ~~approval~~reference.

AtThe ~~the~~information ~~Meeting,~~provided ~~the~~pursuant ~~Corporation’s~~to ~~shareholders~~this ~~approved~~Item ~~the~~2.02, ~~Amended~~including ~~and~~Exhibit ~~Restated~~99.1, ~~Simmons~~is ~~First~~being ~~National~~furnished ~~Corporation 2023 Stock~~ and ~~Incentive~~shall ~~Plan~~not ~~(“Amended~~be ~~and~~deemed ~~Restated 2023 Plan” or the~~ “~~plan~~filed”). ~~The~~for ~~Amended~~purposes ~~and Restated 2023 Plan was adopted by the Corporation’s Board~~ of ~~Directors (the “Board”), subject to shareholder approval, on March~~Section ~~12,~~18 ~~2026, based on the recommendation~~ of the ~~Compensation~~Securities ~~Committee~~Exchange Act of ~~the~~1934 ~~Board~~ (~~the~~ “~~Committee~~Exchange Act”). ~~The~~or ~~plan~~otherwise ~~was~~subject ~~originally~~to ~~adopted as~~ the ~~Simmons~~liabilities ~~First~~under ~~National~~that ~~Corporation~~Section ~~2023~~and ~~Stock~~shall ~~and~~not ~~Incentive~~be ~~Plan,~~deemed ~~which~~to ~~was~~be ~~approved~~incorporated by ~~shareholders~~reference oninto ~~April 18,~~any ~~2023.~~filing ~~The~~of ~~Amended~~the ~~and~~Registrant ~~Restated~~under ~~2023~~the ~~Plan~~Securities ~~became~~Act ~~effective~~of ~~May 13,~~1933 ~~2026,~~(“Securities ~~upon~~Act”) ~~shareholder~~or ~~approval~~the atExchange ~~the~~Act, ~~Meeting.~~except ~~Outstanding~~as ~~awards~~shall ~~previously~~be ~~granted~~expressly ~~under~~set ~~the~~forth ~~plan~~by ~~remain~~specific ~~outstanding~~reference in ~~accordance~~such ~~with their terms~~filing.

~~The~~Item ~~Amended and Restated 2023 Plan increases the maximum number of shares of the Corporation’s common stock that may be issued under the plan (since inception on April 18, 2023) to~~ 7~~,350,000 shares, an increase of 3,550,000 shares~~.01 InRegulation ~~addition,~~FD the Amended and Restated 2023 Plan adds an annual $750,000 limit on combined cash and equity compensation for the Corporation’s non-employee directors, subject to exceptions in extraordinary circumstances, and makes additional non-substantive updates to certain terms and provisions of the planDisclosure. ~~Finally, the Amended and Restated 2023 Plan extends the plan’s term for granting awards to May 12, 2036, from the current expiration date of April 17, 2033.~~

~~The~~On ~~principal purposes of the Amended and Restated 2023 Plan are to promote the long-term growth and profitability of the Corporation and its subsidiaries~~July 16, ~~to provide employees~~2026, the ~~non-employee~~Registrant ~~directors,~~issued ~~and consultants with~~ an ~~incentive~~investor ~~to achieve corporate objectives~~presentation, toa ~~attract~~copy ~~and retain individuals~~ of ~~outstanding~~which ~~competence,~~is ~~and~~attached tohereto ~~provide~~as ~~participants~~Exhibit ~~with~~99.2 ~~incentives~~and ~~that~~is ~~are~~incorporated ~~closely~~herein ~~linked~~by ~~to the interests of all shareholders of the Corporation~~reference.

The ~~Amended~~information ~~and~~provided ~~Restated~~pursuant ~~2023~~to ~~Plan~~this ~~provides~~Item ~~for the grant of stock options~~7.01, ~~stock~~including ~~appreciation~~Exhibit ~~rights~~99.2, ~~restricted~~is ~~stock~~being ~~awards,~~furnished ~~restricted~~and ~~stock~~shall ~~units,~~not ~~performance~~be ~~share~~deemed ~~units,~~“filed” ~~stock~~for ~~awards,~~purposes ~~other~~of ~~stock-based~~Section 18 ~~awards, and performance cash awards. Any~~ of the ~~award~~Exchange ~~types~~Act ~~may~~or beotherwise ~~granted~~subject asto ~~performance-based~~the ~~compensation~~liabilities ~~awards~~under that ~~vest~~Section ~~based~~and onshall ~~the~~not ~~satisfaction~~be ofdeemed ~~performance~~to ~~goals~~be ~~established~~incorporated by ~~the~~reference ~~Committee,~~into ~~which~~any ~~has~~filing ~~been~~of ~~appointed to administer~~ the ~~Amended~~Registrant ~~and Restated 2023 Plan. Awards~~ under the ~~Amended~~Securities ~~and~~Act ~~Restated~~or ~~2023~~the ~~Plan~~Exchange ~~may be granted to employees~~Act, ~~non-employee~~except ~~directors,~~as ~~and~~shall ~~consultants~~be ofexpressly ~~the~~set ~~Corporation~~forth ~~and~~by ~~certain~~specific ofreference ~~its~~in ~~subsidiaries,~~such ~~as determined by the Committee~~filing.

Unless the Amended and Restated 2023 Plan is terminated sooner by the Board, no award will be granted under the Amended and Restated 2023 Plan after May 12, 2036. Any awards granted under the Amended and Restated 2023 Plan that are outstanding on May 12, 2036 will remain outstanding in accordance with their terms.

Subject to adjustment in the event of certain changes in the Corporation’s capital structure, the maximum number of shares of the Corporation’s common stock that may be issued under the Amended and Restated 2023 Plan (since inception on April 18, 2023) is 7,350,000 shares, which includes awards granted since inception and represents an increase of 3,550,000 shares since the plan originally became effective. In the event of any change in the outstanding shares of the Corporation’s common stock by reason of any stock dividend, stock split, reverse stock split, recapitalization, merger, consolidation, reorganization, reclassification, combination, exchange of shares or similar event or change in the Corporation’s capital stock, the aggregate number and kind or class of shares reserved under the Amended and Restated 2023 Plan and subject to outstanding awards under the plan, the exercise price of stock options and stock appreciation rights, and other relevant provisions will be proportionately, equitably and appropriately adjusted by the Committee to retain the economic value or opportunity.

The Committee has the authority under the Amended and Restated 2023 Plan to select plan participants, to grant awards and to determine the terms and conditions of awards and the extent to which performance goals are satisfied, as the Committee considers appropriate. In addition, subject to the terms of the Amended and Restated 2023 Plan, the Committee has the authority, among other things, to construe and interpret the plan and the award

agreements, to implement rules for the plan’s administration, to accelerate the exercisability or vesting of any award, and to make all other determinations for administration of the Amended and Restated 2023 Plan. The Committee may delegate authority under the Amended and Restated 2023 Plan to certain members of the Corporation’s management, except in the case of awards to the Corporation’s officers or directors subject to Section 16 of the Exchange Act.

All awards granted under the Amended and Restated 2023 Plan, whether vested or unvested, are subject to clawback as may be required under the Corporation’s current Compensation Clawback Policy or any future clawback or similar policy of the Corporation that is applicable and in effect from time to time. In addition, awards are also subject to clawback as may be required under any applicable law, government regulation or stock exchange listing requirement.

The foregoing description of the Amended and Restated 2023 Plan is only a summary and is qualified in its entirety by reference to the full text of the Amended and Restated 2023 Plan, which is attached as Exhibit 10.1 to this Current Report on Form 8-K and incorporated by reference herein.

Item 5.07 Submission of Matters to a Vote of Security Holders.

On May 13, 2026, Simmons First National Corporation (“Corporation”) held its Annual Meeting of Shareholders (“Meeting”) at the Corporation’s corporate offices in Little Rock, Arkansas. At the Meeting, the following matters were submitted to the Corporation’s security holders for consideration: (1) ratification of the action of the Corporation’s board of directors fixing the number of directors at fourteen; (2) election of fourteen directors; (3) adoption of a non-binding resolution approving the compensation of the named executive officers of the Corporation; (4) ratification of the Audit Committee’s selection of the accounting firm Forvis Mazars, LLP as independent auditors of the Corporation and its subsidiaries for the year ending December 31, 2026; and (5) approval of the Amended and Restated Simmons First National Corporation 2023 Stock and Incentive Plan.

At the Meeting, all fourteen directors were elected by proxies solicited pursuant to Section 14 of the Securities Exchange Act of 1934, without any solicitation in opposition thereto. The following table summarizes the required analysis of the voting by security holders at the Meeting:

Voting of Shares

Action	For	Against	Abstain	BrokerNon-Votes
Fix the number of directors at fourteen	125,857,676	650,879	305,285	0
Election of Directors	For	Against	Abstain	BrokerNon-Votes
James Brogdon	109,385,272	1,423,678	225,485	15,779,406
Marty D. Casteel	101,312,531	9,498,689	221,450	15,779,406
William E. Clark, II	109,073,609	1,736,850	222,211	15,779,406
Steven A. Cosse	106,290,366	4,486,870	257,198	15,779,406
Mark C. Doramus	108,971,492	1,837,497	225,445	15,779,406
Edward Drilling	106,902,068	3,899,048	233,318	15,779,406
Eugene Hunt	108,857,965	1,919,247	257,222	15,779,406
Jerry Hunter	107,173,830	3,132,139	728,466	15,779,406
Susan Lanigan	107,915,673	2,413,734	705,027	15,779,406
Tom E. Purvis	107,121,362	3,682,898	230,174	15,779,406
Robert L. Shoptaw	106,614,471	4,196,478	223,485	15,779,406
Julie Stackhouse	109,766,699	1,044,312	223,423	15,779,406
Russell Teubner	107,007,491	3,800,504	226,439	15,779,406
Mindy West	108,263,605	2,555,423	215,407	15,779,406

Action	For	Against	Abstain	BrokerNon-Votes
Adoption of a non-binding resolution approving the compensation of the named executive officers	99,152,664	11,387,331	494,439	15,779,406
Action	For	Against	Abstain	BrokerNon-Votes
Ratification of the Audit Committee’s selection of Forvis Mazars, LLP as independent auditors of the Corporation and its subsidiaries for the year ending December 31, 2026	121,341,116	5,308,580	164,144	0
Action	For	Against	Abstain	BrokerNon-Votes
Approval of the Amended and Restated Simmons First National Corporation 2023 Stock and Incentive Plan	106,935,113	3,670,446	428,875	15,779,406

Item 9.01

Financial Statements and Exhibits.

ExhibitNo.		Document
Exhibit 99.1		Press Release dated July 16, 2026
10.1		Amended and Restated Simmons First National Corporation 2023 Stock and Incentive Plan (effective May 13, 2026).
Exhibit 99.2		Investor Presentation issued on July 16, 2026
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).
Exhibit 104		Cover Page Interactive Data File (embedded within the Inline XBRL Document)

SIGNATURE

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 hereunto duly authorized.

SIMMONS FIRST NATIONAL CORPORATION

/s/ C. Daniel Hobbs

Date: May 13, 2026

C. Daniel Hobbs, Executive Vice President and

Date: July 16, 2026

C. Daniel Hobbs, Executive Vice President and

Chief Financial Officer

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