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Advanced Drainage Systems (NYSE: WMS) grants 1,782 shares to director

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Form Type
4

Rhea-AI Filing Summary

PEREZ DE LA MESA MANUEL J reported acquisition or exercise transactions in this Form 4 filing.

Advanced Drainage Systems, Inc. director Manuel J. Perez de la Mesa reported a grant of 1,782 shares of Common Stock on July 16, 2026. The award carried a reported price of $0.00 per share and increased his directly held stake to 25,070 shares.

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Insider PEREZ DE LA MESA MANUEL J
Role Director
Type Security Shares Price Value
Grant/Award Common Stock 1,782 $0.00 $0.00
Holdings After Transaction: Common Stock — 25,070 shares (Direct)
Shares granted 1,782 shares Grant of Common Stock to director on 2026-07-16
Reported price per share $0.0000 per share Reported transaction price for the stock award
Shares owned after transaction 25,070 shares Director’s direct Common Stock holdings following the grant
Transaction date 2026-07-16 Date of the reported stock grant on Form 4
grant/award acquisition financial
"The transaction action is described as a grant/award acquisition of shares."
Common Stock financial
"The security title for the reported insider transaction is Common Stock."
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
Form 4 regulatory
"Insider equity transactions are reported to the SEC on Form 4."
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider transaction did WMS report for Manuel J. Perez de la Mesa?

Advanced Drainage Systems (WMS) reported that director Manuel J. Perez de la Mesa received a grant of 1,782 shares of Common Stock. The Form 4 shows this award on July 16, 2026, increasing his directly held position to 25,070 shares after the transaction.

How many WMS shares does Manuel J. Perez de la Mesa own after this Form 4?

After the reported stock award, Manuel J. Perez de la Mesa directly holds 25,070 shares of Advanced Drainage Systems Common Stock. This reflects the addition of 1,782 granted shares to his prior holdings, as disclosed in the Form 4 insider transaction report.

Was the WMS director’s July 16, 2026 transaction a purchase or an award?

The July 16, 2026 transaction for Advanced Drainage Systems (WMS) director Manuel J. Perez de la Mesa is coded as a grant/award acquisition, not an open-market purchase. The Form 4 uses transaction code A, indicating a grant, award, or other acquisition of Common Stock.

At what price were the 1,782 WMS shares acquired in this Form 4?

The 1,782 shares of Advanced Drainage Systems (WMS) Common Stock were reported at a price of $0.00 per share. The Form 4 thus shows no cash consideration for this grant, consistent with a stock award rather than a market-based purchase transaction.

Does this WMS Form 4 transaction occur under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not checked, so the transaction is not affirmed as executed under a Rule 10b5-1 trading plan. It is reported simply as a grant/award acquisition of Common Stock to the director on July 16, 2026.
SEC Form 4
FORM 4UNITED 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).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
PEREZ DE LA MESA MANUEL J

(Last)(First)(Middle)
C/O ADVANCED DRAINAGE SYSTEMS, INC.
4024 GREEN STRIPE LANE

(Street)
HILLIARD OHIO 43026

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
ADVANCED DRAINAGE SYSTEMS, INC. [ WMS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/16/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock07/16/2026A1,782A$0.0025,070D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Manuel J. Perez de la Mesa, by Scott A. Cottrill as attorney-in-fact07/20/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)