| Item 1. | |
| (a) | Name of issuer:
Red River Bancshares, Inc. |
| (b) | Address of issuer's principal executive offices:
1412 Centre Court Drive, Suite 301, Alexandria, LA, 71301 |
| Item 2. | |
| (a) | Name of person filing:
S3 Dynamics, L.P. and John Charles Simpson (the "reporting persons"). On June 30, 2020, the reporting persons filed a Schedule 13D to report beneficial ownership of the Issuer's common stock, no par value per share (the "common stock"). On May 22, 2025, S3 Dynamics, L.P. sold 100,000 shares of common stock to the Issuer. On August 7, 2025, John Charles Simpson sold 7,500 shares of common stock to the Issuer. This Amendment No. 1 on Schedule 13G is being filed to (1) convert the Schedule 13D to Schedule 13G; (2) report the transactions on May 22, 2025 and August 7, 2025; and (3) indicate that the reporting persons have ceased to beneficially own more than 5% of the Issuer's common stock. |
| (b) | Address or principal business office or, if none, residence:
1412 Centre Court Drive, Suite 301, Alexandria, LA 71301 |
| (c) | Citizenship:
S3 Dynamics, L.P. - State of Delaware; John Charles Simpson - State of Louisiana |
| (d) | Title of class of securities:
Common stock, no par value per share |
| (e) | CUSIP No.:
75686R202 |
| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: |
| (a) |  Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
|
| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
|
| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
|
| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
|
| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
|
| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
|
| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
|
| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
|
| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
|
| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
|
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
|
| | |
| Item 4. | Ownership |
| (a) | Amount beneficially owned:
302,411 |
| (b) | Percent of class:
4.6 %
|
| (c) | Number of shares as to which the person has:
|
| | (i) Sole power to vote or to direct the vote:
0
|
| | (ii) Shared power to vote or to direct the vote:
302,411
|
| | (iii) Sole power to dispose or to direct the disposition of:
0
|
| | (iv) Shared power to dispose or to direct the disposition of:
302,411
|
| Item 5. | Ownership of 5 Percent or Less of a Class. |
| | 
Ownership of 5 percent or less of a class
|
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. |
| |
Not Applicable
|
| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. |
| |
Not Applicable
|
| Item 8. | Identification and Classification of Members of the Group. |
| |
Not Applicable
|
| Item 9. | Notice of Dissolution of Group. |
| |
Not Applicable
|