Exhibit 4.1

ZOIC ERT#| COYICLS | RGSTRYIACCT# | TRANSTYPE|RUN#|TRANS# COMMON STOCK PAR VALUE $1.00 COMMON STOCK Certificate Number ZQ00000000 BancPlus Corporation® Shares **000000****************** ***000000***************** ****000000**************** *****000000*************** ******000000************** BANCPLUS CORPORATION INCORPORATED UNDER THE LAWS OF THE STATE OF MISSISSIPPI THIS CERTIFIES THAT **Mr Alexander David Sample******Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample **Mr Alexander David Sample******Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample******Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample**Mr Alexander David Sample SEE REVERSE FOR CERTAIN DEFINITIONS is the owner of THIS CERTIFICATE IS TRANSFERABLE IN CITIES DESIGNATED BY THE TRANSFER AGENT, AVAILABLE ONLINE AT www.computershare.com FULLY-PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF BancPlus Corporation (hereinafter called the “Company”), transferable on the books of the Company in person or by duly authorized attorney, upon surrender of this Certificate properly endorsed. This Certificate and the shares represented hereby, are issued and shall be held subject to all of the provisions of the Articles of Incorporation, as amended, and the By-Laws, as amended, of the Company (copies of which are on file with the Company and with the Transfer Agent), to all of which each holder, by acceptance hereof, assents. This Certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar. Witness the facsimile seal of the Company and the facsimile signatures of its duly authorized officers. DATED DD-MMM-YYYY COUNTERSIGNED AND REGISTERED: COMPUTERSHARE TRUST COMPANY, N.A. TRANSFER AGENT AND REGISTRAR. President and Chief Executive Officer Senior Executive Vice President By ____________________________ _ AUTHORIZED SIGNATURE SECURITY INSTRUCTIONS ON REVERSE PO BOX 43004, Providence RI 02940-3004 MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 CUSIP/IDENTIFIER XXXXXX XX X Holder ID XXXXXXXXXX Insurance Value 1,000,000.00 Number of Shares 123456 Certificate Numbers Num/No. Denom. Total 1234567890/1234567890 1 1 1 1234567890/1234567890 2 2 2 1234567890/1234567890 3 3 3 1234567890/1234567890 4 4 4 1234567890/1234567890 5 5 5 1234567890/1234567890 6 6 6 Total Transaction 7

BANCPLUS CORPORATION THE COMPANY WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS, A SUMMARY OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE COMPANY AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE VARIATIONS IN RIGHTS, PREFERENCES AND LIMITATIONS DETERMINED FOR EACH SERIES, WHICH ARE FIXED BY THE ARTICLES OF INCORPORATION OF THE COMPANY, AS AMENDED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE COMPANY, AND THE AUTHORITY OF THE BOARD OF DIRECTORS TO DETERMINE VARIATIONS FOR FUTURE SERIES. SUCH REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF THE COMPANY OR TO THE TRANSFER AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS LEGAL REPRESENTATIVES, TO GIVE THE COMPANY A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY SUCH CERTIFICATE. The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM -as tenants in common UN IF GIFT MIN ACT - Custodian (Gust) (Minor) TENENT -as tenants by the entireties under Uniform Gifts to Minors Act (State) UN IF TRF MIN ACT - Custodian (until age ) (Gust) JT TEN -as joint tenants with right of survivorship and not as tenants in common under Uniform Transfers to Minors Act (Minor) (State) Additional abbreviations may also be used though not in the above list. PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE For value received, hereby sell, assign and transfer unto (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE. OF ASSIGNEE) Shares of the Common Stock represented by the within Certificate, and do hereby irrevocably constitute and appoint Attorney to transfer the said stock on the books of the within-named Company with full power of substitution in the premises. Dated: 20 _______ _ Signature: __________________________ _ Signature : —-:————————————Notice: The signature to this assignment must correspond with the name as written upon the face of the certificate, in every particular, without alteration or enlargement, or any change whatever. Signature(s) Guaranteed: Medallion Guarantee Stamp THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (Banks, Stockbrokers, Savings and Loan Associations and Credit Unions) WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO SEC RULE 17Ad-1 5. The IRS requ1res that the named transfer agent (“we”) report the cost bas1s of certain shares or units acquired after January 1, 2011. If your shares or units are covered by the legislation, and you requested to sell ,.,_ or transfer the shares or units using a specific cost basis calculation method, then we have processed as you requested. If you did not 0 specify a cost basis calculation method, then we have defaulted to the (A. first in, first out (FIFO) method. Please consult your tax advisor if you need additional information about cost basis. C. If you do not keep in contact with the issuer or do not have any rt activity in your account for the time period specified by state law, your property may become subject to state unclaimed property laws and transferred to the appropriate state. 1234567