D. Scott Barbour - 13 Mar 2026 Form 4 Insider Report for ADVANCED DRAINAGE SYSTEMS, INC. (WMS)

Role
President & Chief Executive Officer, Director
Signature
/s/ D. Scott Barbour, by Scott A. Cottrill as attorney-in-fact
Issuer symbol
WMS
Transactions as of
13 Mar 2026
Net transactions value
$0
Form type
4
Filing time
17 Mar 2026, 16:05:35 UTC
Previous filing
06 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
BARBOUR D. SCOTT President & Chief Executive Officer, Director C/O ADVANCED DRAINAGE SYSTEMS, INC., 4024 GREEN STRIPE LANE, HILLIARD /s/ D. Scott Barbour, by Scott A. Cottrill as attorney-in-fact 17 Mar 2026 0001716232

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WMS Common Stock Gift -7,150 -12% $0.000000* 53,141 13 Mar 2026 Reporting Person's Revocable Trust F1
transaction WMS Common Stock Gift +7,150 +7% $0.000000* 109,955 13 Mar 2026 Reporting Person's Irrevocable Trust F2
holding WMS Common Stock 42,867 13 Mar 2026 Direct
holding WMS Common Stock 511 13 Mar 2026 2023 GRAT Remainder Trust F3
holding WMS Common Stock 11,867 13 Mar 2026 Reporting Person's 2024 GRAT F4
holding WMS Common Stock 46,500 13 Mar 2026 Reporting Person's 2025 GRAT F4
holding WMS Common Stock 6,495 13 Mar 2026 Spouse's Revocable Trust F5
holding WMS Common Stock 69,005 13 Mar 2026 Spouse's Irrevocable Trust F6
holding WMS Common Stock 17,066 13 Mar 2026 By KSOP F7
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares held in revocable trust for the benefit of the reporting person.
F2 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.
F3 Shares held in irrevocable remainder trust, of which the reporting person's spouse is trustee. The beneficiaries of the irrevocable trust are the reporting persons's nieces and nephew.
F4 Shares held in GRATs of which the reporting person is trustee.
F5 Shares held in revocable trust for the benefit of the reporting person's spouse.
F6 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.
F7 Represents current allocation under KSOP.

Remarks:

President & Chief Executive Officer