TIM A. MAKOWSKI - 12 Nov 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
Issuer symbol: WMS
Transactions as of: 12 Nov 2025
Net transactions value: -$731,276
Form type: 4
Filing time: 13 Nov 2025, 16:48:27 UTC
Previous filing: 23 May 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	13 Nov 2025	0001672236

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WMS	Common Stock	Sale	$716,208	-4,800	-65%	$149.21	2,568	12 Nov 2025	Direct
transaction	WMS	Common Stock	Sale	$15,068	-101	-3.9%	$149.19	2,467	12 Nov 2025	Direct
holding	WMS	Common Stock						17,557	12 Nov 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