X0609 4 2026-08-05 0001772921 OneWater Marine Inc. ONEW 0001825628 Bos Teresa D. false 4471 LEGENDARY DRIVE DESTIN FL 32541 true true Member of 10% owner group 0001825627 Bos Peter H. Jr. false 4471 LEGENDARY DRIVE DESTIN FL 32541 true true Member of 10% owner group 0002049958 Legendary Investments, LLC/FL false 4471 LEGENDARY DRIVE DESTIN FL 32541 true Member of 10% owner group 0002049352 Legendary, LLC false 4471 LEGENDARY DRIVE DESTIN FL 32541 true Member of 10% owner group false Class A common stock, par value $0.01 2026-08-05 4 S 0 8 13 D 1030495 D Class A common stock, par value $0.01 2026-08-10 4 S 0 19871 12.64 D 1010624 D Class A common stock, par value $0.01 2026-08-11 4 S 0 110250 12.81 D 900374 D Class A common stock, par value $0.01 880503 I By Legendary Investments, LLC Class A common stock par value $0.01 4000 I By Legendary, LLC Represents shares held jointly with spouse. The price reported in column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $12.60 to $12.745, inclusive. The Reporting Person undertakes to provide to OneWater Marine Inc., any security holder of OneWater Marine Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. The price reported in column 4 is a weighted average price, rounded to the nearest cent. These shares were sold in multiple transactions at prices ranging from $12.50 to $13.268, inclusive. The Reporting Person undertakes to provide to OneWater Marine Inc., any security holder of OneWater Marine Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. Represents shares held directly by Legendary Investments, LLC, a wholly owned subsidiary of Legendary, LLC, which is controlled by Mr. and Mrs. Bos. Represents shares held directly by Legendary, LLC, which is controlled by Mr. and Mrs. Bos. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Reporting Person is the beneficial owner of, or has any pecuniary interests in, such securities for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, or for any other purpose. /s/ Tom Lynn, attorney-in-fact for Teresa D. Bos 2026-08-12 /s/ Tom Lynn, attorney-in-fact for Peter H. Bos Jr. 2026-08-12 /s/ Tom Lynn, attorney-in-fact for Legendary Investments, LLC 2026-08-12 /s/ Tom Lynn, attorney-in-fact for Legendary, LLC 2026-08-12