F. Nicholas Grasberger Iii.

Companies

• Louisiana-PacificBoard member Jun 14, 2019 to now¹
• EnviriChair Feb 21, 2019 to now²
• EnviriChief executive officer Aug 5, 2014 to now³
• EnviriPresident Apr 9, 2014 to Apr 26, 2024⁴
• EnviriBoard member Aug 5, 2014 to May 10, 2018³
• EnviriChief operating officer Apr 9, 2014 to Apr 9, 2014⁴
• EnviriChief financial officer May 1, 2013 to Mar 7, 2014⁵
• Armstrong World IndustriesChief executive officer Sep 25, 2009 to Sep 25, 2009⁶
• Armstrong World IndustriesChief financial officer Oct 11, 2006 to Feb 25, 2009⁷
• KennametalVice President Jul 24, 2003 to Dec 17, 2004⁸

Holdings

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

Shares held

• Armstrong World Industries AWI59,823 shares⁹$10.0M at $167.40Sep 25, 2009
• Louisiana-Pacific LPX40,838 shares¹⁰$2.9M at $70.22May 8, 2026
• Kennametal KMT45,133 shares¹¹$1.4M at $30.83Dec 16, 2004
• Enviri HSC0 shares¹²Jun 1, 2026

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

Recent filings

• Jun 1, 2026Returned to company 1,677,852 shares of Enviri¹²
• May 20, 2026Shares withheld for tax 64,842 shares at $19.53 of Enviri¹³
• May 20, 2026Exercised options 141,205 shares of Enviri¹³
• May 8, 2026Granted 1,863 shares of Louisiana-Pacific¹⁰
• Mar 16, 2026Gift 50,000 shares of Enviri¹⁴
• Mar 13, 2026Shares withheld for tax 78,564 shares at $17.84 of Enviri¹⁴
• Mar 13, 2026Exercised options 171,088 shares at $7.00 of Enviri¹⁴
• Mar 12, 2026Gift 63,787 shares of Enviri¹⁴
• Mar 11, 2026Shares withheld for tax 16,567 shares at $17.94 of Enviri¹⁵
• Mar 11, 2026Exercised options 36,077 shares of Enviri¹⁵
• Mar 7, 2026Shares withheld for tax 18,235 shares at $17.65 of Enviri¹⁶
• Mar 7, 2026Exercised options 39,709 shares of Enviri¹⁶
• Mar 4, 2026Shares withheld for tax 24,138 shares at $18.16 of Enviri¹⁷
• Mar 4, 2026Exercised options 52,564 shares of Enviri¹⁷
• Feb 26, 2026Shares withheld for tax 218,891 shares at $18.59 of Enviri¹⁸
• Feb 26, 2026Exercised options 476,504 shares of Enviri¹⁸
• Feb 19, 2026Bought 20,000 shares at $85.49 of Louisiana-Pacific¹⁹
• Dec 16, 2025Shares withheld for tax 144,825 shares at $17.85 of Enviri²⁰
• Dec 16, 2025Returned to company 315,382 shares at $17.85 of Enviri²⁰
• Dec 16, 2025Exercised options 630,766 shares of Enviri²⁰
• Dec 16, 2025Shares withheld for tax 198,787 shares at $17.85 of Enviri²⁰
• Dec 16, 2025Exercised options 432,920 shares of Enviri²⁰
• May 15, 2025Granted 1,499 shares of Louisiana-Pacific²¹
• Mar 11, 2025Shares withheld for tax 16,570 shares at $6.06 of Enviri²²
• Mar 11, 2025Exercised options 36,076 shares of Enviri²²

Trade performance

Returns are price-only (no dividends), measured from the trade date.