WMS 8-K: SEC filing

Advanced Drainage Systems

Filed with the SEC on Nov 5, 2026 · accession 0001604028-26-000043

WMS filed a 8-K (current report) with the SEC on Nov 5, 2026. A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The stock moved -14.9% by the first close after the filing.

Summary of the filing

Advanced Drainage Systems reported Q2 fiscal 2027 financial results, highlighting continued favorable price/cost performance, Adjusted EBITDA margin above 30%, $375 million in share repurchases year-to-date, and the proposed acquisition of StormTrap Investments LLC.

For details, click here →How to read a 8-K →

Key details

Q2 FY27 Stormwater revenue$809.0M

Q2 FY27 Wastewater revenue$192.0M

Q2 FY27 total revenue$1.0B

1H FY27 Stormwater revenue$1.5B

1H FY27 Wastewater revenue$369.0M

1H FY27 total revenue$1.9B

Q2 FY27 Adjusted EBITDA marginpercent 32

Q2 FY26 Adjusted EBITDA marginpercent 34

Revenue pulled into Q1 from Q2$45.0M

Shares repurchased year-to-date$375.0M

Number of shares repurchased year-to-dateshares 2.7M

Q2 FY27 Stormwater revenue from NDS acquisition$77.0M

1H FY27 Stormwater revenue from NDS acquisition$172.0M

IssuerAdvanced Drainage Systems, Inc.

Proposed acquisition targetStormTrap Investments LLC

Acquired businessNDS

President and chief executive officerScott Barbour

Executive vice president, chief financial officerScott Cottrill

President, infiltrator water technologiesCraig Taylor

Senior vice president, corporate strategy & investor relationsMike Higgins

How WMS stock reacted

Close before

$144.07

Nov 4, 2026

First close after

-14.88%

$122.63

5 trading days

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Since filing

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Frequently asked questions

What did WMS file with the SEC on Nov 5, 2026?

WMS filed a 8-K (SEC filing). Advanced Drainage Systems reported Q2 fiscal 2027 financial results, highlighting continued favorable price/cost performance, Adjusted EBITDA margin above 30%, $375 million in share repurchases year-to-date, and the proposed acquisition of StormTrap Investments LLC.

How do I read a 8-K?

A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.

How did WMS stock react to this filing?

WMS closed at $144.07 before the filing and $122.63 on Nov 5, 2026 (-14.88%).

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