# EDGAR Filing Document

**Accession Number:** 0001693577
**File Stem:** 0001437749-26-005340
**Filing Date:** 2026-2
**Character Count:** 8002
**Document Hash:** 7dcfde496fb020211d355372870c2872
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-26-005340.hdr.sgml**: 20260224

**ACCESSION NUMBER**: 0001437749-26-005340

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260224

**DATE AS OF CHANGE**: 20260224

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MainStreet Bancshares, Inc.
- **CENTRAL INDEX KEY:** 0001693577
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 812871064
- **STATE OF INCORPORATION:** VA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91404
- **FILM NUMBER:** 26671667

**BUSINESS ADDRESS:**
- **STREET 1:** 10089 FAIRFAX BOULEVARD
- **CITY:** FAIRFAX
- **STATE:** VA
- **ZIP:** 22030
- **BUSINESS PHONE:** (703) 481-4567

**MAIL ADDRESS:**
- **STREET 1:** 10089 FAIRFAX BOULEVARD
- **CITY:** FAIRFAX
- **STATE:** VA
- **ZIP:** 22030
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MainStreet Bank 401(k) Retirement Plan
- **CENTRAL INDEX KEY:** 0002113205

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** VA
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** 10089 FAIRFAX BOULEVARD
- **CITY:** FAIRFAX
- **STATE:** VA
- **ZIP:** 22030
- **BUSINESS PHONE:** 5713751345

**MAIL ADDRESS:**
- **STREET 1:** 10089 FAIRFAX BOULEVARD
- **CITY:** FAIRFAX
- **STATE:** VA
- **ZIP:** 22030

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** MainStreet Bancshares, Inc.

**Title of Class of Securities:** Common Stock, par value $4.00 per share

**CUSIP Number:** 56064Y100

**Date of Event Which Requires Filing of this Statement:** 12/31/2025

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

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

- [ ] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>MainStreet Bank 401(k) Retirement Plan | Names of Reporting Persons<br>MainStreet Bank 401(k) Retirement Plan |
|:---|:---|:---|:---|
| 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>VA | Citizenship or Place of Organization<br>VA |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>383763.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>383763.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>383763.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>383763.00 |
| 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>5.1% | Percent of Class Represented by Amount in Row (9)<br>5.1% |
| 12. | Type of Reporting Person (See Instructions)<br>EP | Type of Reporting Person (See Instructions)<br>EP |

**Comment for Type of Reporting Person:** MainStreet Bancshares, Inc. on behalf of MainStreet Bank 401(k) Retirement Plan

---

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

**Item 1(b). Address of Issuer's Principal Executive Offices:**
10089 FAIRFAX BOULEVARD, FAIRFAX, VIRGINIA, 22030.

**Item 2(a). Name of Person Filing:**
Richard A. Vari, as Administrator for the Plan

**Item 2(b). Address of Principal Business Office:**
10089 Fairfax Boulevard, Fairfax, VA 22030

**Item 2(c). Citizenship:**
Virginia

**Item 2(d). Title of Class of Securities:**
Common Stock, par value $4.00 per share

**Item 2(e). CUSIP Number:**
56064Y100

**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) [x] 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:**

383,763

**(b) Percent of class:**

5.1

**(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:**

383,763
The Plan is subject to the Employee Retirement Income Security Act of 1974 ("ERISA"). Delaware Charter Guarantee & Trust Company dba Principal Trust Company acts as Trustee of the Plan (the "Trust"). The Trust is subject to fiduciary duties under ERISA and the Trust agreements.
Before each meeting of shareholders, Plan participants may direct the Trustee how to vote at such meeting or any adjournment thereof. If participants have not directed the Trustee on how to vote, the Trustee shall vote such securities in the same proportion as those shares for which the Trustee has received proper direction.

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

0

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

383,763

**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 foreign regulatory scheme applicable to Employee Benefit Plan is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.

### 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.

**MainStreet Bank 401(k) Retirement Plan**

**Date:** 02/24/2026

**By:** /s/ Richard A. Vari

**Name & Title:** Richard A. Vari/Plan Administrator