WMS

SEC source: 0000899243-23-013466 · doc4.xml · nonDerivative · entry 2

Cottrill Scott A · CIK 0001343378 · EVP, CFO AND SECRETARY

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,318

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013466 · doc4.xml · nonDerivative · entry 1

Cottrill Scott A · CIK 0001343378 · EVP, CFO AND SECRETARY

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,821

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 253 shares, which dividend equivalents are settled in common stock.

SEC source: 0000899243-23-013478 · doc4.xml · nonDerivative · entry 3

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,026

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013478 · doc4.xml · nonDerivative · entry 2

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,444

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013478 · doc4.xml · nonDerivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,082

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 920 shares, which dividend equivalents are settled in common stock.

SEC source: 0000899243-23-013476 · doc4.xml · nonDerivative · entry 3

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,633

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013476 · doc4.xml · nonDerivative · entry 2

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,666

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013476 · doc4.xml · nonDerivative · entry 1

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,261

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 107 shares, which dividend equivalents are settled in common stock.

SEC source: 0000899243-23-013474 · doc4.xml · nonDerivative · entry 3

KING BRIAN W. · CIK 0001824317 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,397

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013474 · doc4.xml · nonDerivative · entry 2

KING BRIAN W. · CIK 0001824317 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,427

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013474 · doc4.xml · nonDerivative · entry 1

KING BRIAN W. · CIK 0001824317 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,049

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 94 shares, which dividend equivalents are settled in common stock.

SEC source: 0000899243-23-013471 · doc4.xml · nonDerivative · entry 3

KLEIN ROBERT M · CIK 0001614367 · EVP, Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,543

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013471 · doc4.xml · nonDerivative · entry 2

KLEIN ROBERT M · CIK 0001614367 · EVP, Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,574

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013471 · doc4.xml · nonDerivative · entry 1

KLEIN ROBERT M · CIK 0001614367 · EVP, Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,040

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 127 shares, which dividend equivalents are settled in common stock.

SEC source: 0000899243-23-013467 · doc4.xml · nonDerivative · entry 3

HUEBERT MICHAEL G. · CIK 0001823429 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,184

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013467 · doc4.xml · nonDerivative · entry 2

HUEBERT MICHAEL G. · CIK 0001823429 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,209

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013467 · doc4.xml · nonDerivative · entry 1

HUEBERT MICHAEL G. · CIK 0001823429 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,129

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 81 shares, which dividend equivalents are settled in common stock.

SEC source: 0000899243-23-013463 · doc4.xml · nonDerivative · entry 3

MOORE ROY E. JR. · CIK 0001784782 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,950

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013463 · doc4.xml · nonDerivative · entry 2

MOORE ROY E. JR. · CIK 0001784782 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,002

F2 · shares: Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-23-013463 · doc4.xml · nonDerivative · entry 1

MOORE ROY E. JR. · CIK 0001784782 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,157

F1 · shares: Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2023 had been met. Total includes dividend equivalents in the amount of 156 shares, which dividend equivalents are settled in common stock.

SEC source: 0000919574-23-002104 · ownership.xml · nonDerivative · entry 4

JONES ROSS M · CIK 0001267629 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,763

F6 · kind: Represents Common Stock received as part of the distribution by the Berkshire Entities referred to in note (5) above.

SEC source: 0000919574-23-002104 · ownership.xml · nonDerivative · entry 3

JONES ROSS M · CIK 0001267629 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Berkshire Investors IV LLC

Disclosed balance after: 0

F5 · kind: Represents Common Stock of the Issuer distributed by the Berkshire Entities (as defined aboove) to certain of their limited partners and members. The Reporting Person disclaims beneficial ownership in the reported securities except to the extent of his pecuniary interest, if any, therein.

F4 · ownership.nature: Represents shares held by Berkshire Investors IV LLC ("BI IV"). The Reporting Person is a managing member of BI IV. By virtue of the relationship described in the preceding sentence, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by BI IV. The Reporting Person disclaims beneficial ownership of the shares held by BI IV, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000919574-23-002104 · ownership.xml · nonDerivative · entry 2

JONES ROSS M · CIK 0001267629 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Berkshire Investors III LLC

Disclosed balance after: 0

F5 · kind: Represents Common Stock of the Issuer distributed by the Berkshire Entities (as defined aboove) to certain of their limited partners and members. The Reporting Person disclaims beneficial ownership in the reported securities except to the extent of his pecuniary interest, if any, therein.

F3 · ownership.nature: Represents shares held by Berkshire Investors III LLC ("BI III"). The Reporting Person is a managing member of BI III. By virtue of the relationship described in the preceding sentence, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by BI III. The Reporting Person disclaims beneficial ownership of the shares held by BI III, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000919574-23-002104 · ownership.xml · nonDerivative · entry 1

JONES ROSS M · CIK 0001267629 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,467,649

F5 · kind: Represents Common Stock of the Issuer distributed by the Berkshire Entities (as defined aboove) to certain of their limited partners and members. The Reporting Person disclaims beneficial ownership in the reported securities except to the extent of his pecuniary interest, if any, therein.

F1 · ownership.nature: Represents shares held directly or indirectly by Berkshire Fund IX, L.P. ("BF IX"), Berkshire Fund IX-A, L.P. ("BF IX-A"), Stockbridge Fund, L.P. ("SF") and certain other accounts (collectively, the "Berkshire Entities"). Ninth Berkshire Associates LLC ("9BA") is the general partner of BF IX and BF IX-A, and Stockbridge Associates LLC ("SA") is the general partner of SF. Berkshire Partners LLC ("BP") is the investment adviser to BF IX and BF IX-A, and Stockbridge Partners LLC ("SP") is the investment adviser to SF and such certain other accounts. Berkshire Partners Holdings LLC ("BPH") is the general partner of BPSP, L.P. ("BPSP"), which is the managing member of BP and SP.

F2 · ownership.nature: (continued from Footnote 1) The Reporting Person is a managing member of BPH, BPSP, BP, SP, 9BA and SA. By virtue of the relationships described in the preceding sentences, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by the Berkshire Entities. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000919574-23-002105 · ownership.xml · nonDerivative · entry 5

Seetharam Anil · CIK 0001676191 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Family Trusts

Disclosed balance after: 1,196

F6 · kind: Represents Common Stock received as part of the distribution by the Berkshire Entities referred to in note (5) above.

SEC source: 0000919574-23-002105 · ownership.xml · nonDerivative · entry 4

Seetharam Anil · CIK 0001676191 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,040

F6 · kind: Represents Common Stock received as part of the distribution by the Berkshire Entities referred to in note (5) above.

SEC source: 0000919574-23-002105 · ownership.xml · nonDerivative · entry 3

Seetharam Anil · CIK 0001676191 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Berkshire Investors IV LLC

Disclosed balance after: 0

F5 · kind: Represents Common Stock of the Issuer distributed by the Berkshire Entities (as defined aboove) to certain of their limited partners and members. The Reporting Person disclaims beneficial ownership in the reported securities except to the extent of his pecuniary interest, if any, therein.

F4 · ownership.nature: Represents shares held by Berkshire Investors IV LLC ("BI IV"). The Reporting Person is a managing member of BI IV. By virtue of the relationship described in the preceding sentence, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by BI IV. The Reporting Person disclaims beneficial ownership of the shares held by BI IV, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000919574-23-002105 · ownership.xml · nonDerivative · entry 2

Seetharam Anil · CIK 0001676191 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Berkshire Investors III LLC

Disclosed balance after: 0

F5 · kind: Represents Common Stock of the Issuer distributed by the Berkshire Entities (as defined aboove) to certain of their limited partners and members. The Reporting Person disclaims beneficial ownership in the reported securities except to the extent of his pecuniary interest, if any, therein.

F3 · ownership.nature: Represents shares held by Berkshire Investors III LLC ("BI III"). The Reporting Person is a managing member of BI III. By virtue of the relationship described in the preceding sentence, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by BI III. The Reporting Person disclaims beneficial ownership of the shares held by BI III, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000919574-23-002105 · ownership.xml · nonDerivative · entry 1

Seetharam Anil · CIK 0001676191 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,467,649

F5 · kind: Represents Common Stock of the Issuer distributed by the Berkshire Entities (as defined aboove) to certain of their limited partners and members. The Reporting Person disclaims beneficial ownership in the reported securities except to the extent of his pecuniary interest, if any, therein.

F1 · ownership.nature: Represents shares held directly or indirectly by Berkshire Fund IX, L.P. ("BF IX"), Berkshire Fund IX-A, L.P. ("BF IX-A"), Stockbridge Fund, L.P. ("SF") and certain other accounts (collectively, the "Berkshire Entities"). Ninth Berkshire Associates LLC ("9BA") is the general partner of BF IX and BF IX-A, and Stockbridge Associates LLC ("SA") is the general partner of SF. Berkshire Partners LLC ("BP") is the investment adviser to BF IX and BF IX-A, and Stockbridge Partners LLC ("SP") is the investment adviser to SF and such certain other accounts. Berkshire Partners Holdings LLC ("BPH") is the general partner of BPSP, L.P. ("BPSP"), which is the managing member of BP and SP.

F2 · ownership.nature: (continued from Footnote 1) The Reporting Person is a managing member of BPH, BPSP, BP, SP, 9BA and SA. By virtue of the relationships described in the preceding sentences, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by the Berkshire Entities. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000899243-23-007335 · doc4.xml · nonDerivative · entry 1

TALLEY KEVIN C · CIK 0001682214 · EVP and CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,019

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.18 to $90.00, inclusive. The reporting person undertakes to provide to Advanced Drainage Systems, Inc., any security holder of Advanced Drainage Systems, 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 ranges set forth in footnote (1) to this Form 4.

SEC source: 0000899243-23-005529 · doc4.xml · nonDerivative · entry 7

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Indirect · Spouse's Irrevocable Trust

Disclosed balance after: 61,500

F6 · kind: On February 17, 2023, the revocable trust for the benefit of the reporting person's spouse contributed 9,000 shares of common stock of ADS to an irrevocable spousal access trust established by the reporting person's spouse, of which the reporting person is a co-trustee. The beneficiaries of the irerrevocable trust include the reporting person's spouse and his children.

F7 · ownership.nature: Shares held in irrevocable spousal access trust established by the reporting person's spouse, of which the reporting person is a co-trustee. The beneficiaries of the irerrevocable trust include the reporting person's spouse and his children.

SEC source: 0000899243-23-005529 · doc4.xml · nonDerivative · entry 6

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Indirect · Spouse's Revocable Trust

Disclosed balance after: 14,000

F6 · kind: On February 17, 2023, the revocable trust for the benefit of the reporting person's spouse contributed 9,000 shares of common stock of ADS to an irrevocable spousal access trust established by the reporting person's spouse, of which the reporting person is a co-trustee. The beneficiaries of the irerrevocable trust include the reporting person's spouse and his children.

F5 · ownership.nature: Shares held in revocable trust for the benefit of the reporting person's spouse.

SEC source: 0000899243-23-005529 · doc4.xml · nonDerivative · entry 5

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Indirect · Spouse's Revocable Trust

Disclosed balance after: 23,000

F4 · kind: On February 15, 2023, the revocable trust for the benefit of the reporting person contributed 15,500 shares of common stock of Advanced Drainage Systems, Inc. ("ADS") to a revocable trust for the benefit of the reporting person's spouse.

F5 · ownership.nature: Shares held in revocable trust for the benefit of the reporting person's spouse.

SEC source: 0000899243-23-005529 · doc4.xml · nonDerivative · entry 4

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Indirect · Reporting Person's Revocable Trust

Disclosed balance after: 50,646

F4 · kind: On February 15, 2023, the revocable trust for the benefit of the reporting person contributed 15,500 shares of common stock of Advanced Drainage Systems, Inc. ("ADS") to a revocable trust for the benefit of the reporting person's spouse.

F2 · ownership.nature: Shares held in revocable trust for the benefit of the reporting person.

SEC source: 0000899243-23-005529 · doc4.xml · nonDerivative · entry 3

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Indirect · Reporting Person's Irrevocable Trust

Disclosed balance after: 93,500

F1 · kind: On February 15, 2023, the revocable trust for the benefit of the reporting person contributed 9,000 shares of common stock of Advanced Drainage Systems, Inc. ("ADS") to an irrevocable spousal access trust established by the reporting person, of which the reporting person's spouse is a co-trustee. The beneficiaries of the irrevocable trust are the reporting person and his children.

F3 · ownership.nature: Shares held in irrevocable spousal access trust established by the reporting person, of which the reporting person's spouse is a co-trustee. The beneficiaries of the irrevocable trust are the reporting person and his children.

SEC source: 0000899243-23-005529 · doc4.xml · nonDerivative · entry 2

BARBOUR D. SCOTT · CIK 0001716232 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Indirect · Reporting Person's Revocable Trust

Disclosed balance after: 66,146

F1 · kind: On February 15, 2023, the revocable trust for the benefit of the reporting person contributed 9,000 shares of common stock of Advanced Drainage Systems, Inc. ("ADS") to an irrevocable spousal access trust established by the reporting person, of which the reporting person's spouse is a co-trustee. The beneficiaries of the irrevocable trust are the reporting person and his children.

F2 · ownership.nature: Shares held in revocable trust for the benefit of the reporting person.

SEC source: 0000899243-23-001677 · doc4.xml · nonDerivative · entry 1

MOORE ROY E. JR. · CIK 0001784782 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,441

F1 · shares: Represents shares withheld to satisfy the Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer.

SEC source: 0000899243-22-037397 · doc4.xml · nonDerivative · entry 3

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,600

SEC source: 0000899243-22-037397 · doc4.xml · derivative · entry 5

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,323

Underlying: Common Stock · 2,324 shares

Expires 2030-05-19

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 · derivative.exercise_date: The options vest in three equal annual installments beginning on May 19, 2021, provided that the Reporting Person remains continuously employed by the Issuer through each applicable vesting date.

SEC source: 0000899243-22-037397 · doc4.xml · nonDerivative · entry 2

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,214

SEC source: 0000899243-22-037397 · doc4.xml · nonDerivative · entry 1

HARVEY DARIN S. · CIK 0001756972 · EVP, Supply Chain & Logistics

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,924

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 · kind: Reflects the exercise by the Reporting Person of stock options (right to buy) previously granted by the Issuer.

SEC source: 0000899243-22-037276 · doc4.xml · nonDerivative · entry 3

COLEMAN MICHAEL B. · CIK 0001742480 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,884

SEC source: 0000899243-22-037276 · doc4.xml · nonDerivative · entry 2

COLEMAN MICHAEL B. · CIK 0001742480 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,911

SEC source: 0000899243-22-037276 · doc4.xml · nonDerivative · entry 1

COLEMAN MICHAEL B. · CIK 0001742480 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,938

SEC source: 0000899243-22-037028 · doc4.xml · nonDerivative · entry 2

HUEBERT MICHAEL G. · CIK 0001823429 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,712

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.63 to $97.13, inclusive. The reporting person undertakes to provide to Advanced Drainage Systems, Inc., any security holder of Advanced Drainage Systems, 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 ranges set forth in footnote (1) to this Form 4.

SEC source: 0000899243-22-037028 · doc4.xml · nonDerivative · entry 1

HUEBERT MICHAEL G. · CIK 0001823429 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,729

SEC source: 0000899243-22-035563 · doc4.xml · nonDerivative · entry 2

KLEIN ROBERT M · CIK 0001614367 · EVP, Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 98,775

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.16 to $82.61, inclusive. The reporting person undertakes to provide to Advanced Drainage Systems, Inc., any security holder of Advanced Drainage Systems, 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 ranges set forth in footnote (3) to this Form 4.

SEC source: 0000899243-22-035563 · doc4.xml · nonDerivative · entry 1

KLEIN ROBERT M · CIK 0001614367 · EVP, Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,027

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.51 to $83.52, inclusive. The reporting person undertakes to provide to Advanced Drainage Systems, Inc., any security holder of Advanced Drainage Systems, 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 ranges set forth in footnote (1) to this Form 4.

F2 · balance_after: Includes 21,252 shares previously held through the KSOP which were distributed to the reporting person on October 28, 2022 and are now owned directly.

SEC source: 0000899243-22-035458 · doc4.xml · nonDerivative · entry 1

PEREZ DE LA MESA MANUEL J · CIK 0001230654 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,493

SEC source: 0000919574-22-005568 · ownership.xml · nonDerivative · entry 21

JONES ROSS M · CIK 0001267629 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Berkshire Investors IV LLC

Disclosed balance after: 28,880

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $136 to $136.0075. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer 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.

F4 · ownership.nature: Represents shares held by Berkshire Investors IV LLC ("BI IV"). The Reporting Person is a managing member of BI IV. By virtue of the relationship described in the preceding sentence, the Reporting Person may be deemed to share beneficial ownership with respect to the shares of common stock held by BI IV. The Reporting Person disclaims beneficial ownership of the shares held by BI IV, except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.