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Insider Trading & Ownership of William M. Lambert

Location
Cranberry Twp, PA
Summary
The estimated net worth of William M. Lambert is at least $17,253,217 dollars as of 19 Feb 2026. William M. Lambert is the Director of MSA Safety Inc and owns shares of MSA Safety Inc (MSA) stock worth about $14.25M. William M. Lambert is the Director of KENNAMETAL INC and owns shares of KENNAMETAL INC (KMT) stock worth about $3.01M.
Signature
Michelle R. Keating, as attorney-in-fact for William Lambert
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Quick Takeaways

  • William M. Lambert has 2 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $17,253,217.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: MSA Safety Inc ($14,247,450).
  • Past-year value change for that position: .

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Official SEC Source

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of William M. Lambert

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
MSA, MNESP MSA Safety Inc Director $14,247,450 12 Dec 2025
KMT KENNAMETAL INC Director $3,005,767 18 Feb 2026

Insider Transactions Reported by William M. Lambert:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

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