X0609 4 2026-10-01 0 0001772921 OneWater Marine Inc. ONEW 0001789635 Singleton Philip Austin Jr. false 6275 LANIER ISLANDS PARKWAY BUFORD GA 30518 1 1 0 1 Executive Chairman See Remarks 0001887311 Auburn OWMH, LLLP false 6275 LANIER ISLANDS PARKWAY BUFORD GA 30518 0 0 0 1 Member of 10% Ownership Group 0001886667 Singleton Asset Management, LLC false 6275 LANIER ISLANDS PARKWAY BUFORD GA 30518 0 0 0 1 Member of 10% Ownership Group 0001887310 Singleton Michelle false 6275 LANIER ISLANDS PARKWAY BUFORD GA 30518 0 0 0 1 Member of 10% Ownership Group 0001887308 Philip Singleton Irrevocable Trust, dated December 24, 2015 false 6275 LANIER ISLANDS PARKWAY BUFORD GA 30518 0 0 0 1 Member of 10% Ownership Group 0001887309 Austin Singleton Irrevocable Trust, dated December 30, 2015 false 6275 LANIER ISLANDS PARKWAY BUFORD GA 30518 0 0 0 1 Member of 10% Ownership Group 0 Class A common stock, par value $0.01 2026-10-01 4 F 0 54527 9.53 D 171261 D Class A common stock, par value $0.01 2026-10-01 4 G 0 54528 0 D 116733 D Class A common stock, par value $0.01 2026-10-01 4 G 0 54528 0 A 674537 I By Austin Singleton Irrevocable Trust, Dated December 30, 2015 Class A common stock, par value $0.01 345678 I By Philip Singleton Irrevocable Trust, Dated December 24, 2015 Class A common stock par value $0.01 801816 I By Auburn OWMH, LLLP Represents shares withheld to cover tax withholding obligations in connection with the vesting of previously reported restricted stock units. On October 1, 2026, the Reporting Person gifted 54,528 shares of Class A common stock of OneWater Marine Inc. to the Austin Singleton Irrevocable Trust, Dated December 30, 2015, a family trust. Member of 10% ownership group. /s/ Jack Ezzell, Authorized Signatory for Philip Austin Singleton, Jr. 2026-10-05 /s/ Jack Ezzell, as Attorney-in-Fact for Michelle Singleton, as Manager of Singleton Asset Management, LLC, in its capacity as general partner of Auburn OWMH, LLLP 2026-10-05 /s/ Jack Ezzell, as Attorney-in-Fact for Michelle Singleton, as Manager of Singleton Asset Management, LLC 2026-10-05 /s/ Jack Ezzell, as Attorney-in-Fact for Michelle Singleton 2026-10-05 /s/ Jack Ezzell, Attorney-in-Fact for Scott Beville, as Co-Trustee of Philip Singleton Irrevocable Trust, dated December 24, 2015 2026-10-05 /s/ Jack Ezzell, Attorney-in-Fact for Scott Beville, as Co-Trustee of Austin Singleton Irrevocable Trust, dated December 30, 2015 2026-10-05