0001604028 False 0001604028 2026-06-18 2026-06-18

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

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): June 18, 2026

ADVANCED DRAINAGE SYSTEMS, INC.
(Exact name of Registrant as Specified in Its Charter)

Delaware | 001-36557 | 51-0105665
(State or Other Jurisdiction of Incorporation) | (Commission File Number) | (IRS Employer Identification No.)
4024 Green Stripe Lane |  | 43026
Hilliard, | Ohio
(Address of Principal Executive Offices) |  | (Zip Code)

Registrant’s Telephone Number, Including Area Code: (800) 733-7473
Not Applicable
(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below):

☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
Common Stock, $0.01 par value per share |  | WMS |  | New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure
On June 18, 2026, Advanced Drainage Systems, Inc. (the “Company”) is hosting a previously announced Investor Day conference in Hilliard, Ohio. A live webcast will be made available on the Company’s investor relations website at investors.ads-pipe.com. A replay will also be available on the Company’s website following the conference. A copy of the presentation slides used during the conference is attached as Exhibit 99.1 and incorporated by reference herein.
The information furnished pursuant to this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities under Section 18 of the Exchange Act and shall not be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933 or the Exchange Act.
Item 9.01 Financial Statements and Exhibits.
(d)Exhibits
The following exhibits are being furnished as part of this report:

99.1 |  | Press Release of Advanced Drainage Systems, Inc., dated June 18, 2026, regardin g I nvestor D ay
99.2 |  | Advanced Drainage Systems, Inc. Investor Day Presentation dated June 18, 2026.
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

| ADVANCED DRAINAGE SYSTEMS, INC.
Date: June 18, 2026 | By: |  | /s/ Scott A. Cottrill
| Name: |  | Scott A. Cottrill
| Title: |  | EVP, CFO & Secretary