Company Analysis

Advanced Drainage Systems, Inc. (WMS)

NYSE: WMS · Plastics Foam Products · Hilliard, OH · filing with the SEC since 2014
Grade5.6
◀ Past 5.9● Present 5.8▶ Future 5.0

Filings

272 filings since 2017 beside 581 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-Q Quarterly report for the quarter ending Dec 31, 2026Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by Feb 9, 2027
10-K Annual report for the fiscal year ending Mar 31, 2027Large accelerated filers have 60 days after the fiscal year ends. by May 30, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 36 days after the quarter ended. The proxy statement was last filed Jun 3, 2026.

Filings a yearinsider forms included
84879689101907265
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 3 times in the last 36 months, the newest Jul 17, 2025.
Insider forms 581

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 12, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
Nov 10, 2026 8-K items 1.01, 9.01 Major agreement signed · Current report Nov 6, 2026
Nov 5, 2026 10-Q Quarterly report Sep 30, 2026
Nov 5, 2026 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Oct 5, 2026 8-K items 1.01, 7.01, 9.01 Major agreement signed; Investor disclosure (Regulation FD) · Current report Oct 1, 2026
Sep 16, 2026 11-K Employee plan annual report Mar 31, 2026
Aug 6, 2026 10-Q Quarterly report Jun 30, 2026
Aug 6, 2026 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Jul 16, 2026 8-K items 5.07, 9.01 Shareholder vote · Current report
Jun 18, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
Jun 3, 2026 ARS Annual report to shareholders Mar 31, 2026
Jun 3, 2026 DEFA14A Extra proxy material
Jun 3, 2026 DEF 14A Proxy statement Mar 31, 2026
May 21, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
May 21, 2026 10-K Annual report Mar 31, 2026
May 21, 2026 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Apr 29, 2026 SCHEDULE 13G Large holder notice
Mar 26, 2026 SCHEDULE 13G/A Large holder update, amended
Feb 27, 2026 8-K items 1.01, 2.03, 7.01, 9.01 Major agreement signed; New debt or obligation taken on; Investor disclosure (Regulation FD) · Current report
Feb 13, 2026 SCHEDULE 13G Large holder notice
Feb 12, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
Feb 12, 2026 8-K items 7.01, 9.01 Investor disclosure (Regulation FD) · Current report
Feb 5, 2026 10-Q Quarterly report Dec 31, 2025
Feb 5, 2026 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Feb 2, 2026 8-K items 2.01, 7.01, 9.01 Purchase or sale of a business completed; Investor disclosure (Regulation FD) · Current report
Nov 6, 2025 10-Q Quarterly report Sep 30, 2025
Nov 6, 2025 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Sep 23, 2025 8-K items 1.01, 7.01, 9.01 Major agreement signed; Investor disclosure (Regulation FD) · Current report
Sep 16, 2025 11-K Employee plan annual report Mar 31, 2025
Aug 7, 2025 10-Q Quarterly report Jun 30, 2025
Aug 7, 2025 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Jul 17, 2025 SCHEDULE 13G/A Large holder update, amended
Jul 17, 2025 8-K items 5.02, 5.07, 9.01 Officer or director change; Shareholder vote · Current report Jul 15, 2025
Jun 4, 2025 ARS Annual report to shareholders Mar 31, 2025
Jun 4, 2025 DEFA14A Extra proxy material
Jun 4, 2025 DEF 14A Proxy statement Mar 31, 2025
May 15, 2025 10-K Annual report Mar 31, 2025
May 15, 2025 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
Feb 6, 2025 10-Q Quarterly report Dec 31, 2024
Feb 6, 2025 8-K items 2.02, 7.01, 8.01, 9.01 Results released; Investor disclosure (Regulation FD); Other event · Current report
40 of 272 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton WMS · research, not advice