William M. Lambert

Companies

• KennametalBoard member Mar 3, 2016 to now¹
• MSA SafetyBoard member Dec 3, 2009 to now²
• EQT HOLDINGS LIMITEDBoard member Nov 15, 2018 to Jan 3, 2019³
• MSA SafetyChair Sep 7, 2017 to Jun 5, 2018⁴
• MSA SafetyChief executive officer Jun 9, 2008 to Mar 12, 2018⁵
• MSA SafetyPresident Mar 15, 2007 to May 11, 2017⁶
• MSA SafetyChief operating officer Mar 15, 2007 to Mar 18, 2008⁶
• MSA SafetyVice President Mar 11, 2004 to Mar 6, 2007⁷

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• MSA Safety MSA67,876 shares⁸$12.3M at $181.79Sep 16, 2026
• Kennametal KMT82,898 shares⁹$2.6M at $30.99Aug 14, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 14, 2026Gift 6,000 shares of MSA Safety⁸
• Sep 11, 2026Gift 2,000 shares of MSA Safety⁸
• Aug 14, 2026Shares withheld for tax 186 shares at $31.22 of Kennametal⁹
• Aug 14, 2026Exercised options 6,092 shares at $31.22 of Kennametal⁹
• May 13, 2026Granted 899 shares of MSA Safety¹⁰
• Feb 18, 2026Shares withheld for tax 7,485 shares at $39.04 of Kennametal¹¹
• Feb 18, 2026Exercised options 14,000 shares at $20.87 of Kennametal¹¹
• Dec 12, 2025Gift 9,634 shares of MSA Safety¹²
• Aug 15, 2025Shares withheld for tax 170 shares at $21.02 of Kennametal¹³
• Aug 15, 2025Exercised options 5,566 shares at $21.02 of Kennametal¹³
• May 16, 2025Granted 909 shares of MSA Safety¹⁴
• Nov 15, 2024Gift 2,200 shares of MSA Safety¹⁵
• Aug 15, 2024Shares withheld for tax 145 shares at $25.00 of Kennametal¹⁶
• Aug 15, 2024Exercised options 4,766 shares at $25.00 of Kennametal¹⁶
• May 15, 2024Granted 755 shares of MSA Safety¹⁷
• Nov 27, 2023Gift 3,000 shares of MSA Safety¹⁸
• Aug 15, 2023Shares withheld for tax 129 shares at $25.99 of Kennametal¹⁹
• Aug 15, 2023Exercised options 4,252 shares at $25.99 of Kennametal¹⁹
• May 17, 2023Granted 939 shares of MSA Safety²⁰
• May 11, 2023Gift 1,111 shares of MSA Safety²⁰
• Nov 15, 2022Gift 2,400 shares of MSA Safety²¹
• Nov 15, 2022Gift 2,400 shares of MSA Safety²²
• Aug 15, 2022Exercised options 3,977 shares at $27.27 of Kennametal²³
• Aug 10, 2022Sold 33,885 shares at $126.60 of MSA Safety²⁴
• Aug 10, 2022Sold 9,642 shares at $127.39 of MSA Safety²⁴