WILLIAM M LAMBERT

CIK 1187330 · Chairman · last filed 2026-05-14

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$7.93M

Companies

4

Total Filings

135

Lifetime Open-Market Net

-$81.85M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
MSA Director 49,126 $159.89 $7.85M -$82.81M 76 2026-05-14
KMTw Director 76,992 $962.5K 11 2026-02-19
OI Director 8,045 $9.17 $73.8K $0 6 2019-08-16
EQT Director $51.94 $0 2 2019-01-03

Recent Filings · Page 6 of 14

135 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2018-06-20 MSA Sell (S) −13,536 -$1.28M EDGAR
2018-06-19 MSA Sell (S) −96,464 -$9.15M EDGAR
2018-06-05 MSA Tax (F) −5,629 -$523.5K EDGAR
2018-06-04 MSA Mixed +1,802 -$7.5K EDGAR
2018-05-21 MSA Grant (A) +1,317 $0 EDGAR
2018-03-12 MSA Mixed +1,537 -$579.6K EDGAR
2018-03-06 MSA Mixed +3,137 -$11.2K EDGAR
2018-02-26 MSA Grant (A) +12,946 $0 EDGAR
2017-11-28 MSA Mixed -$1.31M EDGAR
2017-11-24 MSA Mixed -$478.0K EDGAR
Showing 5160 of 135
Page 6 of 14
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.