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MainStreet Bancshares (MNSBP) 10K Form and Latest SEC Filings 2026

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Latest MainStreet Bancshares SEC Filings & Recent Activity

MainStreet Bancshares (NASDAQ:MNSBP) has submitted 389+ documents to the U.S. Securities and Exchange Commission (SEC) since 2018. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. The most recent filing was a Form 10-Q submitted on May 8, 2026.

Form 4
MainStreet Bancshares, Inc. Reports Ownership Change on Apr. 17, 2026

Form 4 filings disclose changes in stock ownership by company insiders, including purchases, sales, grants, and option exercises.

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8-K
MainStreet Bancshares Files Current Report on Apr. 24, 2026

An 8-K is filed when a material corporate event occurs, such as an acquisition, leadership change, or financial update.

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10-Q
MainStreet Bancshares Files Quarterly Report on May. 8, 2026

The 10-Q contains MainStreet Bancshares's unaudited quarterly financial statements, revenue, earnings updates, and cash flow changes between annual reports.

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MainStreet Bancshares SEC Filing History

Browse MainStreet Bancshares' complete SEC filing history using the filters below. Filter by form type - 10-K, 10-Q, 8-K, Form 4, and more - or set a custom date range to find a filing.

DateFilerForm TypeView
05/08/2026 9:03 AM
MainStreet Bancshares (1693577) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
04/24/2026 7:02 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/21/2026 8:38 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/20/2026 7:02 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/17/2026 8:30 AM
MainStreet Bancshares (1693577) Filer
Form DEF 14A
04/17/2026 8:35 AM
MainStreet Bancshares (1693577) Filer
Form ARS
04/17/2026 7:23 AM
MainStreet Bancshares (1693577) Issuer
RUST PATSY I (1774659) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
04/17/2026 7:25 AM
GREEN DARRELL (1775101) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/17/2026 7:26 AM
DeLeon Rafael E (1875543) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/17/2026 7:27 AM
Hall Wendy Adeler (2093239) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/17/2026 7:27 AM
Higgins Joan Morgan (2125680) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/13/2026 8:28 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/06/2026 8:21 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/30/2026 10:37 AM
Higgins Joan Morgan (2125680) Reporting
MainStreet Bancshares (1693577) Issuer
Form 3
Initial statement of beneficial ownership of securities  
03/25/2026 9:56 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/13/2026 9:11 AM
MainStreet Bancshares (1693577) Filer
Form 10-K
Annual report pursuant to Section 13 or 15(d)  
03/12/2026 2:33 PM
MainStreet Bancshares (1693577) Filer
Form 10-K/A
03/03/2026 9:19 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/24/2026 3:11 PM
MainStreet Bancshares (1693577) Subject
MainStreet Bank 401 (0) k
Form SCHEDULE 13G
02/24/2026 8:51 AM
MainStreet Bancshares (1693577) Issuer
Vari Richard Alexander (1788697) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2026 8:40 AM
DICK JEFF W (1774665) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2026 8:46 AM
Hersiburane Abdulhamid (1818494) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 11:52 AM
MainStreet Bancshares (1693577) Issuer
Youngren Todd (2012294) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 11:35 AM
CHMELIK THOMAS J (1774482) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 11:38 AM
Baboval Michael B (2016618) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 11:41 AM
Freesmeier William (2016613) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/20/2026 8:00 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/13/2026 7:43 PM
BANC FUNDS CO LLC (1029311) Filed by
MainStreet Bancshares (1693577) Subject
Form SCHEDULE 13G/A
02/13/2026 3:08 PM
Fourthstone LLC (1767803) Filed by
MainStreet Bancshares (1693577) Subject
Form SCHEDULE 13G/A
02/10/2026 10:21 AM
MainStreet Bancshares (1693577) Subject
WELLINGTON MANAGEMENT GROUP LLP (902219) Filed by
Form SCHEDULE 13G/A
01/27/2026 8:16 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/26/2026 7:00 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/12/2026 9:30 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/09/2026 10:11 AM
MainStreet Bancshares (1693577) Issuer
Vari Richard Alexander (1788697) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
01/02/2026 1:27 PM
MainStreet Bancshares (1693577) Issuer
Manouchehri Ali R (2013171) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
01/02/2026 1:34 PM
Hall Wendy Adeler (2093239) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/02/2026 1:18 PM
GREEN DARRELL (1775101) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/02/2026 1:22 PM
DeLeon Rafael E (1875543) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
12/23/2025 3:40 PM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/19/2025 3:31 PM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/10/2025 9:11 AM
CHMELIK THOMAS J (1774482) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
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12/08/2025 2:24 PM
CHMELIK THOMAS J (1774482) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
12/05/2025 2:01 PM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/04/2025 2:57 PM
CHMELIK THOMAS J (1774482) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
12/02/2025 12:26 PM
CHMELIK THOMAS J (1774482) Reporting
MainStreet Bancshares (1693577) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/26/2025 8:00 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/24/2025 12:17 PM
Brockett Charles C. (1629138) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
11/24/2025 11:25 AM
DICK JEFF W (1774665) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
11/21/2025 7:35 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/14/2025 9:52 AM
Fourthstone LLC (1767803) Filed by
MainStreet Bancshares (1693577) Subject
Form SCHEDULE 13G
11/07/2025 8:38 AM
MainStreet Bancshares (1693577) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
11/04/2025 7:35 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/28/2025 9:04 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/27/2025 7:00 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/22/2025 2:50 PM
Hall Wendy Adeler (2093239) Reporting
MainStreet Bancshares (1693577) Issuer
Form 3
Initial statement of beneficial ownership of securities  
10/21/2025 8:24 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/14/2025 7:52 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/01/2025 9:35 AM
MainStreet Bancshares (1693577) Issuer
RUST PATSY I (1774659) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
10/01/2025 9:37 AM
GREEN DARRELL (1775101) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
10/01/2025 9:40 AM
MainStreet Bancshares (1693577) Issuer
Manouchehri Ali R (2013171) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
09/24/2025 2:43 PM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/27/2025 8:00 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/08/2025 10:02 AM
MainStreet Bancshares (1693577) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
08/01/2025 4:29 PM
MainStreet Bancshares (1693577) Filer
Form 10-K/A
07/23/2025 8:03 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/22/2025 6:36 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/08/2025 9:32 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/07/2025 11:46 AM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/01/2025 9:43 AM
DeLeon Rafael E (1875543) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/01/2025 9:47 AM
GREEN DARRELL (1775101) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/20/2025 11:00 AM
MainStreet Bancshares (1693577) Filer
Form 11-K
Annual reports of employee stock purchase, savings and similar plans pursuant to Section 15(d)  
05/29/2025 10:28 AM
Brockett Charles C. (1629138) Reporting
MainStreet Bancshares (1693577) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/23/2025 3:57 PM
MainStreet Bancshares (1693577) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
(Data available from 1/1/2016 forward)

MainStreet Bancshares SEC Filings - Frequently Asked Questions

MainStreet Bancshares (MNSBP) has submitted 389+ filings to the SEC since 2018. You can browse the complete history or filter by form type using the tools above.

The most recent filing was a Form 10-Q submitted on May 8, 2026. This was a quarterly financial update for 2025.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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This page (NASDAQ:MNSBP) was last updated on 5/15/2026 by MarketBeat.com Staff.
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