[144] ADVANCED DRAINAGE SYSTEMS, INC. SEC Filing

Rhea-AI Filing Summary

WMS — Form 144 notice of proposed sale. An affiliate filed to sell up to 80,030 shares of the issuer’s common stock through Morgan Stanley Smith Barney LLC. The shares have an aggregate market value of $11,920,356.46. The approximate sale date is 11/12/2025, and the securities are listed on the NYSE.

The shares to be sold were acquired on 11/12/2025 via a stock option exercise for cash. Shares outstanding were 77,764,487.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	80030	11920356.46	77764487	11/12/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	11/12/2025	Stock Option Exercise	Issuer			80030	11/12/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did WMS disclose in this Form 144?

A proposed sale of up to 80,030 shares of common stock with an aggregate market value of $11,920,356.46.

When might the WMS shares be sold?

The filing lists an approximate sale date of 11/12/2025.

How were the WMS shares to be sold acquired?

They were acquired on 11/12/2025 via a stock option exercise paid in cash.

Which broker is listed for the proposed sale of WMS shares?

The filing names Morgan Stanley Smith Barney LLC as broker.

On which exchange are the WMS shares listed?

The filing identifies the NYSE as the exchange.

How many WMS shares were outstanding?

Shares outstanding were 77,764,487 as stated in the filing.

What is the class of securities involved in the WMS Form 144?

The filing involves Common stock.