[Form 4] ADVANCED DRAINAGE SYSTEMS, INC. Insider Trading Activity

Rhea-AI Filing Summary

Advanced Drainage Systems (WMS) Form 4: Director Manuel J. Perez de la Mesa received 1,967 shares of common stock on 07/17/2025.

The transaction is coded “A” with a $0.00 price, indicating a stock-based grant rather than an open-market purchase. After the award, the director directly owns 23,288 shares. No sales, derivative positions, or additional transactions were reported.

The event modestly increases insider alignment but is immaterial relative to WMS’s share count and market capitalization, suggesting limited market impact.

Insights

Securities Analyst

TL;DR: Small, zero-cost share grant; negligible valuation impact.

The filing shows a routine equity award of 1,967 shares to a non-executive director, lifting his direct stake to 23,288 shares. Because the shares were issued at no cost, cash outflow is nil and the transaction does not reflect bullish sentiment through personal capital deployment. Given WMS’s multi-billion-dollar market cap, the additional shares represent an immaterial fraction of total outstanding stock. No derivative activity or dispositions accompany the grant, and there are no implications for earnings, liquidity, or governance beyond ordinary compensation practice. Overall impact is neutral for investors.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

PEREZ DE LA MESA MANUEL J

(Last) (First) (Middle)

C/O ADVANCED DRAINAGE SYSTEMS, INC.

4640 TRUEMAN BOULEVARD

(Street)

HILLIARD OH 43026

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ADVANCED DRAINAGE SYSTEMS, INC. [ WMS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
07/17/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/17/2025		A		1,967	A	$0.00	23,288	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Manuel J. Perez de la Mesa, by Scott A. Cottrill as attorney-in-fact	07/21/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many WMS shares did the director acquire?

The Form 4 reports an acquisition of 1,967 shares of Advanced Drainage Systems common stock.

What is the director’s total WMS shareholding after the transaction?

Following the award, the director now directly owns 23,288 shares.

Was cash paid for the shares in this Form 4 filing?

No. The shares were issued at a $0.00 price, indicating a stock-based compensation grant.

Does the filing include any derivative securities?

No derivative securities were reported in Table II of the Form 4.

Is this insider transaction likely to impact WMS’s stock price?

Given the small number of shares relative to WMS’s float, the filing is not expected to materially affect the share price.