Tim A. Makowski - Nov 12, 2025 Form 4 Insider Report for ADVANCED DRAINAGE SYSTEMS, INC. (WMS)

Role: Vice President, Controller and Chief Accounting Officer
Signature: /s/ Tim A. Makowski, by Scott A. Cottrill as attorney-in-fact
Stock symbol: WMS
Transactions as of: Nov 12, 2025
Transactions value $: -$731,276
Form type: 4
Date filed: 11/13/2025, 04:48 PM
Previous filing: May 23, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MAKOWSKI TIM A	Vice President, Controller and Chief Accounting Officer	C/O ADVANCED DRAINAGE SYSTEMS, INC., 4640 TRUEMAN BOULEVARD, HILLIARD	/s/ Tim A. Makowski, by Scott A. Cottrill as attorney-in-fact	2025-11-13	0001672236

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WMS	Common Stock	Sale	-$716K	-4.8K	-65.15%	$149.21	2.57K	Nov 12, 2025	Direct
transaction	WMS	Common Stock	Sale	-$15.1K	-101	-3.93%	$149.19	2.47K	Nov 12, 2025	Direct
holding	WMS	Common Stock						17.6K	Nov 12, 2025	By KSOP	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents current allocation under KSOP.

Remarks:

Vice President, Controller and Chief Accounting Officer