ONEW

SEC source: 0001140361-21-033550 · form4.xml · nonDerivative · entry 5

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Austin Singleton Irrevocable Trust, Dated December 30, 2015

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001140361-21-033550 · form4.xml · nonDerivative · entry 4

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Philip Singleton Irrevocable Trust, Dated December 24, 2015

Disclosed balance after: 345,678

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001140361-21-033550 · form4.xml · nonDerivative · entry 3

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Philip Singleton Irrevocable Trust, Dated December 24, 2015

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001140361-21-033550 · form4.xml · nonDerivative · entry 2

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Auburn OWMH, LLLP

Disclosed balance after: 611,371

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001140361-21-033550 · form4.xml · nonDerivative · entry 1

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Auburn OWMH, LLLP

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001654954-21-010766 · section16.xml · derivative · entry 7

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By OWM BIP Investor, LLC

Disclosed balance after: 0

Underlying: Class A common stock par value $0.01 · 222,025 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · security: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F3 · derivative.exercise_price: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F2 · kind: Pursuant to the reorganization of the Issuer, as part of the Issuer's initial public offering, the Reporting Person's equity ownership in OneWater LLC was converted into newly-issued units in OneWater LLC, together with an equal number of shares of Class B common stock in the Issuer. The shares of Class B common stock (i) confer no incidents of economic ownership on the holders thereof, (ii) only confer voting rights on the holders thereof and (iii) may only be issued, on a one-for-one basis, to the holders of OneWater LLC common units.

F3 · price: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F3 · derivative.exercise_date: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F3 · derivative.expiration_date: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: Beekman Investment Partners AIV III-OWM, L.P. ("AIV III") is an investment fund that is managed by a general partner, Beekman Investment Group III, LLC. OWM BIP Investor, LLC is an investment vehicle wholly-owned by AIV III. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

SEC source: 0001654954-21-010766 · section16.xml · nonDerivative · entry 3

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,487

F6 · kind: Award of restricted stock units pursuant to the OneWater Marine Inc. 2020 Omnibus Incentive Plan. The award vests on September 30, 2022, subject to the recipient's continued service as a director of OneWater Marine Inc. through such vesting date.

SEC source: 0001654954-21-010766 · section16.xml · nonDerivative · entry 2

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By OWM BIP Investor, LLC

Disclosed balance after: 222,025

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the redemption of 222,025 common units of One Water Marine Holdings, LLC ("OneWater LLC") coupled with an equal number of shares of Class B common stock of the Issuer into an equal number of shares of Class A common stock of the Issuer.

F3 · price: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: Beekman Investment Partners AIV III-OWM, L.P. ("AIV III") is an investment fund that is managed by a general partner, Beekman Investment Group III, LLC. OWM BIP Investor, LLC is an investment vehicle wholly-owned by AIV III. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

SEC source: 0001654954-21-010766 · section16.xml · nonDerivative · entry 1

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By OWM BIP Investor, LLC

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the redemption of 222,025 common units of One Water Marine Holdings, LLC ("OneWater LLC") coupled with an equal number of shares of Class B common stock of the Issuer into an equal number of shares of Class A common stock of the Issuer.

F2 · shares: Pursuant to the reorganization of the Issuer, as part of the Issuer's initial public offering, the Reporting Person's equity ownership in OneWater LLC was converted into newly-issued units in OneWater LLC, together with an equal number of shares of Class B common stock in the Issuer. The shares of Class B common stock (i) confer no incidents of economic ownership on the holders thereof, (ii) only confer voting rights on the holders thereof and (iii) may only be issued, on a one-for-one basis, to the holders of OneWater LLC common units.

F3 · price: At the request of the holder, each common unit of OneWater LLC may be coupled with a share of Class B common stock of the Issuer and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of the Issuer on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each unit redeemed. The units do not expire.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: Beekman Investment Partners AIV III-OWM, L.P. ("AIV III") is an investment fund that is managed by a general partner, Beekman Investment Group III, LLC. OWM BIP Investor, LLC is an investment vehicle wholly-owned by AIV III. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

SEC source: 0001140361-21-042499 · form5.xml · nonDerivative · entry 2

Singleton Philip Austin Jr. · CIK 0001789635 · Director · CEO - See Remarks · See Remarks

Auburn OWMH, LLLP · CIK 0001887311 · Member of 10% Ownership Group

Singleton Asset Management, LLC · CIK 0001886667 · Member of 10% Ownership Group

Singleton Michelle · CIK 0001887310 · Member of 10% Ownership Group

Philip Singleton Irrevocable Trust, dated December 24, 2015 · CIK 0001887308 · Member of 10% Ownership Group

Austin Singleton Irrevocable Trust, dated December 30, 2015 · CIK 0001887309 · Member of 10% Ownership Group

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 117,491

F2 · kind: This is a reporting of a late filing of a Form 5 bona fide gift. On September 30, 2021, the Reporting Person gifted 5,173 shares of OneWater Marine, Inc. Class A common stock to the Austin Singleton Irrevocable Trust, Dated December 30, 2015, a family trust.

SEC source: 0001140361-21-028653 · form4.xml · nonDerivative · entry 2

Style Keith · CIK 0001449710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,813

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 26, 2021.

F3 · price: 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 $43.26 to $43.76, inclusive.

SEC source: 0001140361-21-028653 · form4.xml · nonDerivative · entry 1

Style Keith · CIK 0001449710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,286

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 26, 2021.

F2 · price: 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 $42.25 to $43.22, 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 sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

SEC source: 0001140361-21-028102 · form4.xml · nonDerivative · entry 2

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,299

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F3 · price: 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 $45.38 to $46.31, inclusive.

SEC source: 0001140361-21-028102 · form4.xml · nonDerivative · entry 1

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,639

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F2 · price: 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 $44.09 to $44.99, 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 sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

SEC source: 0001654954-21-008597 · section16.xml · nonDerivative · entry 2

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 65,986

F4 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $46.13 to $46.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F3 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-008597 · section16.xml · nonDerivative · entry 1

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 67,731

F1 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $45.695 to $45.00. The Reporting Person undertakes to provide to OneWater Marine Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F3 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-008527 · section16.xml · nonDerivative · entry 3

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 83,162

F6 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $45.603 to $45.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F3 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-008527 · section16.xml · nonDerivative · entry 2

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 95,676

F5 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $47.00 to $46.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F3 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-008527 · section16.xml · nonDerivative · entry 1

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 115,655

F1 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $47.97 to $47.00. The Reporting Person undertakes to provide to OneWater Marine Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · balance_after: The aggregate number of shares of Class A common stock was previously described in the Form 4 filed on May 11, 2021 as 155,078 due to a clerical error. The correct number of shares of Class A common stock was 140,495.

F3 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001140361-21-024448 · form4.xml · nonDerivative · entry 1

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,799

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F2 · price: 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 $41.68 to $42.34, 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001140361-21-022962 · form4.xml · derivative · entry 4

AISQUITH ANTHONY M · CIK 0001269299 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By family limited partnership

Disclosed balance after: 0

Underlying: Class A common stock, par value $0.01 · 693,423 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. ("OneWater Inc.") and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · derivative.exercise_date: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. ("OneWater Inc.") and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F1 · derivative.expiration_date: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. ("OneWater Inc.") and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

SEC source: 0001140361-21-022962 · form4.xml · nonDerivative · entry 2

AISQUITH ANTHONY M · CIK 0001269299 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By family limited partnership

Disclosed balance after: 693,423

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. ("OneWater Inc.") and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001140361-21-022962 · form4.xml · nonDerivative · entry 1

AISQUITH ANTHONY M · CIK 0001269299 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By family limited partnership

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

F1 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. ("OneWater Inc.") and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · price: Pursuant to the OneWater LLC Agreement, the shares of the Issuer's Class B common stock were cancelled for no consideration on a one-for-one basis upon the redemption by the Reporting Person of OneWater LLC common units, together with a corresponding number of shares of Class B common stock, for shares of the Issuer's Class A common stock.

SEC source: 0001140361-21-023219 · form4.xml · nonDerivative · entry 2

Style Keith · CIK 0001449710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,313

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 26, 2021.

F3 · price: 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 $41.17 to $41.75, inclusive.

SEC source: 0001140361-21-023219 · form4.xml · nonDerivative · entry 1

Style Keith · CIK 0001449710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,425

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 26, 2021.

F2 · price: 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 $40.00 to $40.90, 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 sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

SEC source: 0001140361-21-020519 · form4.xml · nonDerivative · entry 1

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,299

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F2 · price: 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 $47.00 to $47.16, 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001140361-21-022588 · form4.xml · derivative · entry 6

AISQUITH ANTHONY M · CIK 0001269299 · Director · President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · By family limited partnership

Disclosed balance after: 693,423

Underlying: Class A common stock, par value $0.01 · 693,423 shares

Expires not disclosed

F3 · derivative.exercise_price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · kind: The Reporting Person gifted these shares to a limited partnership of which the Reporting Person is the sole limited partner and the Reporting Person and his spouse are the sole stockholders of the general partner.

F3 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F3 · derivative.exercise_date: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F3 · derivative.expiration_date: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

SEC source: 0001140361-21-022588 · form4.xml · derivative · entry 5

AISQUITH ANTHONY M · CIK 0001269299 · Director · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A common stock, par value $0.01 · 693,423 shares

Expires not disclosed

F3 · derivative.exercise_price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · kind: The Reporting Person gifted these shares to a limited partnership of which the Reporting Person is the sole limited partner and the Reporting Person and his spouse are the sole stockholders of the general partner.

F3 · price: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F3 · derivative.exercise_date: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F3 · derivative.expiration_date: At the request of the holder, each Common Unit of One Water Marine Holdings, LLC ("OneWater LLC") may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

SEC source: 0001140361-21-022588 · form4.xml · nonDerivative · entry 4

AISQUITH ANTHONY M · CIK 0001269299 · Director · President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · By family limited partnership

Disclosed balance after: 693,423

F2 · kind: The Reporting Person gifted these shares to a limited partnership of which the Reporting Person is the sole limited partner and the Reporting Person and his spouse are the sole stockholders of the general partner.

SEC source: 0001140361-21-022588 · form4.xml · nonDerivative · entry 3

AISQUITH ANTHONY M · CIK 0001269299 · Director · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The Reporting Person gifted these shares to a limited partnership of which the Reporting Person is the sole limited partner and the Reporting Person and his spouse are the sole stockholders of the general partner.

SEC source: 0001140361-21-017221 · form4.xml · nonDerivative · entry 2

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,799

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F3 · price: 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 $51.35 to $51.93, inclusive.

SEC source: 0001140361-21-017221 · form4.xml · nonDerivative · entry 1

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,412

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F2 · price: 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 $49.95 to $50.63, 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 sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

SEC source: 0001654954-21-005466 · section16.xml · nonDerivative · entry 2

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 155,078

F2 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $55.085 to $54.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F3 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005466 · section16.xml · nonDerivative · entry 1

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 160,694

F1 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $55.18 to $53.50. The Reporting Person undertakes to provide to OneWater Marine Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the range.

F3 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005243 · section16.xml · nonDerivative · entry 3

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 171,240

F3 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $54.12 to $53.31. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005243 · section16.xml · nonDerivative · entry 2

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 182,829

F2 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $56.19 to $55.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005243 · section16.xml · nonDerivative · entry 1

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 185,823

F1 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $55.20 to $55.00. The Reporting Person undertakes to provide to OneWater Marine Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005032 · section16.xml · nonDerivative · entry 3

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 202,075

F3 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $54.00 to $55.02. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005032 · section16.xml · nonDerivative · entry 2

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 252,075

F2 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $51.00 to $52.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001654954-21-005032 · section16.xml · nonDerivative · entry 1

Troiano John · CIK 0001789800 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Beekman Investment Partners III, LP

Disclosed balance after: 267,598

F1 · price: The price reported in column 4 is a weighted average price, rounded to the nearest 1/100th cent. These shares were sold in multiple transactions at prices ranging from $49.00 to $53.48. The Reporting Person undertakes to provide to OneWater Marine Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · ownership.nature: Beekman Investment Partners III, L.P. is an investment fund managed by a general partner, Beekman Investment Group III, LLC. The Reporting Person is the sole manager of Beekman Investment Group III, LLC.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001140361-21-012950 · form4.xml · nonDerivative · entry 1

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,299

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

SEC source: 0001140361-21-030973 · form4.xml · derivative · entry 8

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,029

Underlying: Class A common stock, par value $0.01 · 37,029 shares

Expires not disclosed

F2 · derivative.exercise_price: At the request of the holder, each Common Unit of OneWater LLC may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F1 · kind: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F1 · price: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F2 · derivative.exercise_date: At the request of the holder, each Common Unit of OneWater LLC may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · derivative.expiration_date: At the request of the holder, each Common Unit of OneWater LLC may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

SEC source: 0001140361-21-030973 · form4.xml · derivative · entry 7

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Auburn OWMH, LLLP

Disclosed balance after: 477,344

Underlying: Class A common stock, par value $0.01 · 37,029 shares

Expires not disclosed

F2 · derivative.exercise_price: At the request of the holder, each Common Unit of OneWater LLC may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F1 · kind: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F1 · price: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F2 · derivative.exercise_date: At the request of the holder, each Common Unit of OneWater LLC may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F2 · derivative.expiration_date: At the request of the holder, each Common Unit of OneWater LLC may be coupled with a share of Class B common stock of OneWater Marine Inc. and redeemed for, at the Issuer's election and subject to certain restrictions in the Fourth Amended and Restated Limited Liability Company Agreement of OneWater LLC (the "OneWater LLC Agreement"), newly-issued shares of Class A common stock of OneWater Marine Inc. on a one-for-one basis or for a cash payment to be determined pursuant to the OneWater LLC Agreement for each Common Unit redeemed. The Common Units do not expire.

F3 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001140361-21-030973 · form4.xml · nonDerivative · entry 4

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,029

F1 · kind: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F1 · price: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

SEC source: 0001140361-21-030973 · form4.xml · nonDerivative · entry 3

Singleton Philip Austin Jr. · CIK 0001789635 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Auburn OWMH, LLLP

Disclosed balance after: 477,344

F1 · kind: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F1 · price: On March 25, 2021, Auburn OWMH, LLLP distributed Common Units of One Water Marine Holdings, LLC ("OneWater LLC") and Class B common stock of OneWater Marine Inc. to the Reporting Person.

F3 · ownership.nature: The Reporting Person disclaims beneficial ownership of the shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001140361-21-008249 · form4.xml · nonDerivative · entry 1

LEGLER MITCHELL W · CIK 0001181882 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,799

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2021.

F2 · price: 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 $40.04 to $40.39, 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001140361-21-007351 · form4.xml · nonDerivative · entry 1

EZZELL JACK P · CIK 0001266718 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,445

F1 · shares: Represents shares withheld to cover tax withholding obligations in connection with the vesting of previously reported restricted stock units.

SEC source: 0001140361-21-042499 · form5.xml · nonDerivative · entry 1

Singleton Philip Austin Jr. · CIK 0001789635 · Director · CEO - See Remarks · See Remarks

Auburn OWMH, LLLP · CIK 0001887311 · Member of 10% Ownership Group

Singleton Asset Management, LLC · CIK 0001886667 · Member of 10% Ownership Group

Singleton Michelle · CIK 0001887310 · Member of 10% Ownership Group

Philip Singleton Irrevocable Trust, dated December 24, 2015 · CIK 0001887308 · Member of 10% Ownership Group

Austin Singleton Irrevocable Trust, dated December 30, 2015 · CIK 0001887309 · Member of 10% Ownership Group

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 117,491

F1 · kind: This is a reporting of a late filing of a Form 5 bona fide gift. On February 12, 2021, the Reporting Person gifted 4,333 shares of OneWater Marine, Inc. Class A common stock to Auburn OWMH, LLLP, a family LLLP.

SEC source: 0001140361-21-004800 · form4.xml · nonDerivative · entry 1

AISQUITH ANTHONY M · CIK 0001269299 · Director · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 78,119

F1 · shares: Represents shares withheld to cover tax withholding obligations in connection with the vesting of previously reported restricted stock units.

SEC source: 0001140361-21-004799 · form4.xml · nonDerivative · entry 1

EZZELL JACK P · CIK 0001266718 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,141

F1 · shares: Represents shares withheld to cover tax withholding obligations in connection with the vesting of previously reported restricted stock units.