Mainstreet Bancshares, Inc.

MNSB·NASDAQ·$23.03Share Price as of 11/2·$164MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/07/26 10-QQ1 ended 03/31/2605/08/26 10-KFY 202503/13/26 10-K/AFY 202403/12/26 10-QQ3 ended 09/30/2511/07/25

Disclosures

8-KCurrent report10/27/26 8-KCurrent report10/26/26 8-KCurrent report10/20/26 8-KCurrent report08/21/26 8-KCurrent report07/21/26

Prospectuses and Registrations

S-3/AShelf registration (amended)06/03/26 POS AMPost-effective amendment05/15/26 S-3Shelf registration05/15/26 S-3/AShelf registration (amended)06/11/24 S-3Shelf registration05/22/24

Proxies

DEF 14ADefinitive proxy04/17/26 DEF 14ADefinitive proxy04/17/25 DEF 14ADefinitive proxy04/12/24 PRE 14APreliminary proxy03/22/24 DEF 14ADefinitive proxy04/10/23

Ownership

Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26 SC 13G/ABeneficial ownership (amended)08/14/26 SC 13G/ABeneficial ownership (amended)08/14/26 SC 13GBeneficial ownership07/29/26

Other

11-KEmployee stock purchase plan report06/18/26 EFFECTRequest for effectiveness06/10/26 EFFECTRequest for effectiveness06/10/26 CORRESPCorrespondence with the SEC06/08/26 UPLOADLetter from the SEC05/20/26