AllianceBernstein L.P. Increases Stake in MainStreet Bancshares Inc to 7.5%

AllianceBernstein L.P. filed a Schedule 13G/A on May 18, 2026, reporting a significant increase in its stake in MainStreet Bancshares Inc (MNSB). As of the event date on March 31, 2026, the investment firm holds 554,723 shares of common stock, representing a 7.5% ownership stake in the company. This marks a notable increase from the previously reported 0.0% ownership, indicating a new substantial position for the filer. The shares were acquired solely for investment purposes on behalf of client discretionary investment advisory accounts. AllianceBernstein L.P., a majority-owned subsidiary of Equitable Holdings, Inc. (EQH), operates under independent management and reports its beneficial ownership separately. The filing confirms that the acquisition was made in the ordinary course of business and not with the intent to influence or change the control of the issuer. The firm maintains sole voting and dispositive power over all 554,723 shares.