# EDGAR Filing Document

**Accession Number:** 0001770100
**File Stem:** 0001770100-26-000002
**Filing Date:** 2026-4
**Character Count:** 9311
**Document Hash:** 073f983949f1ebf843cbf7b5f86cfa34
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001770100-26-000002.hdr.sgml**: 20260422

**ACCESSION NUMBER**: 0001770100-26-000002

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260422

**DATE AS OF CHANGE**: 20260422

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** RED RIVER BANCSHARES INC
- **CENTRAL INDEX KEY:** 0001071236
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 721412058
- **STATE OF INCORPORATION:** LA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91358
- **FILM NUMBER:** 26883292

**BUSINESS ADDRESS:**
- **STREET 1:** 1412 CENTRE COURT DRIVE
- **STREET 2:** SUITE 301
- **CITY:** ALEXANDRIA
- **STATE:** LA
- **ZIP:** 71301
- **BUSINESS PHONE:** (318) 561-4000

**MAIL ADDRESS:**
- **STREET 1:** 1412 CENTRE COURT DRIVE
- **STREET 2:** SUITE 301
- **CITY:** ALEXANDRIA
- **STATE:** LA
- **ZIP:** 71301
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Thibeaux Simeon A.
- **CENTRAL INDEX KEY:** 0001770100

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**MAIL ADDRESS:**
- **STREET 1:** 1412 CENTRE COURT DRIVE
- **STREET 2:** SUITE 101
- **CITY:** ALEXANDRIA
- **STATE:** LA
- **ZIP:** 71301

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 8)**

**Issuer:** Red River Bancshares, Inc.

**Title of Class of Securities:** Common stock, no par value per share

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 03/31/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Simeon A. Thibeaux | Names of Reporting Persons<br>Simeon A. Thibeaux |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>LA | Citizenship or Place of Organization<br>LA |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>337812.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>66411.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>337812.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>66411.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>404223.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>404223.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>6.2% | Percent of Class Represented by Amount in Row (9)<br>6.2% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** Shares identified as subject to sole voting power (line 5) and sole dispositive power (line 7) consist of 170,573 shares of Common Stock held of record by the John Charles Simpson Jr. Trust ("JCSJ Trust") and 167,239 shares of Common Stock held of record by the Angela Katherine Simpson Trust ("AKS Trust"). The Reporting Person is the sole trustee of each of the JCSJ Trust and the AKS Trust. Shares identified as subject to shared voting power (line 6) and shared dispositive power (line 8) are held by S3 Dynamics, L.P. The sole general partner of S3 Dynamics, L.P. is S3 Management, L.L.C., which has management authority over S3 Dynamics, L.P., and Mr. Thibeaux is one of three managers of S3 Management, L.L.C. Mr. Thibeaux is also the trustee or an investment advisor of trusts owning 100% of the limited partnership interests in S3 Dynamics, L.P.

---

**Item 1(a). Name of Issuer:**
Red River Bancshares, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
1412 Centre Court Drive, Suite 301,  Alexandria, Louisiana, 71301

**Item 2(a). Name of Person Filing:**
Simeon A. Thibeaux

**Item 2(b). Address of Principal Business Office:**
1412 Centre Court Drive, Suite 301, Alexandria, LA 71301

**Item 2(c). Citizenship:**
State of Louisiana

**Item 2(d). Title of Class of Securities:**
Common stock, no par value per share

**Item 2(e). CUSIP Number:**
—

**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:**

404,223

**(b) Percent of class:**

6.2

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

337,812. Consists of 170,573 shares of Common Stock held of record by the John Charles Simpson Jr. Trust ("JCSJ Trust") and 167,239 shares of Common Stock held of record by the Angela Katherine Simpson Trust ("AKS Trust"). The Reporting Person is the sole trustee of each of the JCSJ Trust and the AKS Trust.

**(ii) Shared power to vote or to direct the vote:**

66,411. Shares are held by S3 Dynamics, L.P. The sole general partner of S3 Dynamics, L.P. is S3 Management, L.L.C., which has management authority over S3 Dynamics, L.P., and Mr. Thibeaux is one of three managers of S3 Management, L.L.C. Mr. Thibeaux is also the trustee or an investment advisor of trusts owning 100% of the limited partnership interests in S3 Dynamics, L.P.

**(iii) Sole power to dispose or to direct the disposition of:**

337,812. Consists of 170,573 shares of Common Stock held of record by the JCSJ Trust and 167,239 shares of Common Stock held of record by the AKS Trust. The Reporting Person is the sole trustee of each of the JCSJ Trust and the AKS Trust.

**(iv) Shared power to dispose or to direct the disposition of:**

66,411. Shares are held by S3 Dynamics, L.P. The sole general partner of S3 Dynamics, L.P. is S3 Management, L.L.C., which has management authority over S3 Dynamics, L.P., and Mr. Thibeaux is one of three managers of S3 Management, L.L.C. Mr. Thibeaux is also the trustee or an investment advisor of trusts owning 100% of the limited partnership interests in S3 Dynamics, L.P.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Simeon A. Thibeaux**

**Date:** 04/22/2026

**By:** /s/ Simeon A. Thibeaux

**Name & Title:** Simeon A. Thibeaux