Advanced Drainage Systems, Inc.

WMS·NYSE·$138.09Share Price as of 11/2·$11BMarket Cap as of 11/2

Financials

10-QQ1 ended 06/30/2608/06/26 10-KFY 202605/21/26 10-QQ3 ended 12/31/2502/05/26 10-QQ2 ended 09/30/2511/06/25 10-QQ1 ended 06/30/2508/07/25

Disclosures

8-KCurrent report10/05/26 8-KResults of Operations; Regulation FD Disclosure; Other Events08/06/26 8-KShareholder Vote Results07/16/26 8-KCurrent report06/18/26 8-KRegulation FD Disclosure05/21/26

Prospectuses and Registrations

S-8Registration of securities for employees08/04/22 S-8Registration of securities for employees08/05/21 424B2Prospectus for primary offering09/09/19 424B5Prospectus supplement09/03/19 S-3Shelf registration08/01/19

Proxies

DEF 14ADefinitive proxy06/03/26 DEFA14AAdditional proxy materials06/03/26 DEF 14ADefinitive proxy06/04/25 DEFA14AAdditional proxy materials06/04/25 DEF 14ADefinitive proxy06/05/24

Ownership

Form 4Insider transaction09/03/26 Form 4Insider transaction09/03/26 Form 4Insider transaction08/24/26 Form 4Insider transaction07/20/26 Form 4Insider transaction07/20/26

Other

11-KEmployee stock purchase plan report09/16/26 ARSAnnual report to shareholders06/03/26 11-KEmployee stock purchase plan report09/16/25 ARSAnnual report to shareholders06/04/25 11-KEmployee stock purchase plan report09/16/24