SCHEDULE 13G/A 0000950103-24-002197 0001888932 XXXXXXXX LIVE 3 Class A Common Stock, $0.0001 par value per share 09/30/2025 0001676238 Braze, Inc. 10576N102 63 MADISON BUILDING 28 E. 28TH ST., FLOOR 12 MAILROOM NEW YORK NY 10016 Rule 13d-1(d) Magnuson William X1 5376946.00 470.00 5376946.00 470.00 5377416.00 N 5.1 IN Braze, Inc. 63 Madison Building, 28 E. 28th Street, 12th floor mailroom, New York, New York 10016 William Magnuson c/o Braze, Inc. 63 Madison Building 28 E. 28th Street, 12th floor mailroom New York, New York 10016 United States of America Y As of September 30, 2025, Mr. Magnuson beneficially owned 349,868 shares of the Issuer's Class A common stock, par value $0.0001 per share, consisting of (a) 304,672 shares held directly by Mr. Magnuson, (b) 470 shares held indirectly by Mr. Magnuson and (c) 44,726 shares of Class A Common Stock issuable pursuant to restricted stock units held directly by Mr. Magnuson that will settle within 60 days of September 30, 2025, and 5,027,548 of the Issuer's Class B common stock, par value $0.0001 per share (the "Class B Common Stock" and, collectively with the Class A Common Stock, the "Common Stock"), consisting of (a) 3,822,765 shares, and (b) 1,204,783 shares of Class B Common Stock issuable pursuant to stock options that are exercisable within 60 days of September 30, 2025. Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the holder or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the holder continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B Common Stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock. The holders of Class B Common Stock are entitled to ten votes per share and the holders of Class A Common Stock are entitled to one vote per share. Based on (i) 100,271,524 shares of Class A Common Stock and (ii) 11,187,414 shares of Class B Common Stock issued and outstanding, in each case as of September 30, 2025, and the information set forth in (a) above, Mr. Magnuson beneficially owned (A) 5.1% of the outstanding Class A Common Stock (treating only shares of Class B Common Stock beneficially owned by Mr. Magnuson as converted for purposes of computing this percentage), and (B) 4.8% of the outstanding Common Stock, representing 22.7% of the total voting power of the Issuer's outstanding Common Stock. 5,376,946 470 5,376,946 470 Y Y Y Y Y Y Magnuson William /s/ William Magnuson 11/12/2025