COOK WILLIAM M — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

COOK WILLIAM M has filed 1 SEC Form 4 filing across 1 company in the last 90 days — buying. Lifetime open-market purchases: $60K.

Profile

William M. Cook is an executive associated with Mativ Holdings, Inc., a company formed from the merger of Neenah, Inc. and a subsidiary of Schweitzer-Mauduit International, Inc. He has held various leadership roles in the industry, focusing on operational excellence and strategic growth.

Board memberships

• Mativ Holdings, Inc.
• Neenah, Inc.

Awards & honors

• Leadership in the merger of Neenah and Schweitzer-Mauduit
• Contributions to operational strategies in the paper and specialty materials industry

Recent Transactions

Companies — Last 90 Days

• Mativ Holdings, Inc. (MATV) — 1 filings, last 2026-07-07

Frequently Asked Questions

Who is COOK WILLIAM M?

William M. Cook is an executive associated with Mativ Holdings, Inc., a company formed from the merger of Neenah, Inc. and a subsidiary of Schweitzer-Mauduit International, Inc. He has held various leadership roles in the industry, focusing on operational excellence and strategic growth.…

How many SEC Form 4 filings has COOK WILLIAM M submitted recently?

1 primary Form 4 filings in the last 90 days, covering 1 company.

Has COOK WILLIAM M been buying or selling stock?

Recorded transactions: 2 open-market purchases ($60K) and 0 open-market sales () across all tracked filings.

Where can I see all of COOK WILLIAM M's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

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