Amendments to Bylaws (Form 8-K)

Item 5.03 Amendment to Articles of Incorporation or Bylaws; Change in Fiscal Year.

Series C Preferred Stock

On December 11, 2025, Brag House Holdings, Inc. (the "Company") filed a Certificate of Designation of Series C Convertible Preferred Stock (the "Certificate of Designation"), effective as of December 11, 2025, with the Secretary of State of Delaware. The Certificate of Designation was filed pursuant to Section 7.22 of the Merger Agreement, dated October 12, 2025, by and among the Company, House of Doge, Inc., and Brag House Merger Sub, Inc.

The Certificate of Designation designates 65 shares of the Company's preferred stock, par value $0.0001 per share, as Series C Convertible Preferred Stock. Each share of Series C Convertible Preferred Stock is convertible into 5,000,000 shares of the Company's common stock, par value $0.0001 per share (the "Common Stock"), subject to certain limitations as set forth in the Certificate of Designation, including a 4.99% beneficial ownership limitation (which may be increased to up to 9.99% upon 61 days' prior notice from the holder of Series C Preferred Convertible Preferred Stock).

The Series C Convertible Preferred Stock votes together with the Common Stock on an as-converted basis, subject to the limitations described above, including a 4.99% voting cap on an as-converted basis. Holders of the Series C Convertible Preferred Stock are entitled to receive dividends on an as-converted basis when, as and if dividends are paid on the Common Stock. Upon a liquidation of the Company, the Series C Convertible Preferred Stock ranks senior to the Common Stock, pari passu with the Company's existing series of preferred stock, and junior only to securities that are expressly designated as senior securities.

The Certificate of Designation also contains customary anti-dilution adjustment provisions for stock splits, stock dividends, recapitalizations, and similar corporate transactions. The Series C Convertible Preferred Stock may not be issued other than in accordance with the Merger Agreement or in connection with subsequent rights offerings in which holders of Series C Preferred Stock would be entitled to participate on an as-converted basis.

The foregoing summary is qualified in its entirety by reference to the full text of the Certificate of Designation, which is filed as Exhibit 3.1 to this Current Report on Form 8-K.