Mark A. Hershey

Companies

• Armstrong World IndustriesChief executive officer Apr 10, 2026 to now¹
• Armstrong World IndustriesPresident Apr 10, 2026 to now¹
• Armstrong World IndustriesChief operating officer Apr 10, 2025 to now²
• Armstrong World IndustriesSenior VP, Gen Counsel and Scy Jul 6, 2011 to Feb 28, 2025³

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 AWI64,777 shares⁴$10.8M at $166.59Apr 8, 2026

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

Recent filings

• Apr 8, 2026Shares withheld for tax 5,839 shares at $172.77 of Armstrong World Industries⁴
• Apr 8, 2026Exercised options 13,423 shares of Armstrong World Industries⁴
• Feb 27, 2026Shares withheld for tax 1,316 shares at $173.50 of Armstrong World Industries⁵
• Feb 27, 2026Exercised options 3,532 shares at $173.50 of Armstrong World Industries⁵
• Apr 8, 2025Shares withheld for tax 6,826 shares at $126.10 of Armstrong World Industries⁶
• Apr 8, 2025Exercised options 16,540 shares of Armstrong World Industries⁶
• Apr 4, 2024Shares withheld for tax 2,959 shares at $120.40 of Armstrong World Industries⁷
• Apr 4, 2024Exercised options 7,561 shares of Armstrong World Industries⁷
• Apr 6, 2023Shares withheld for tax 1,529 shares at $68.20 of Armstrong World Industries⁸
• Apr 6, 2023Exercised options 3,972 shares of Armstrong World Industries⁸
• Feb 1, 2023Sold 6,835 shares at $80.14 of Armstrong World Industries⁹
• Apr 21, 2022Sold 1,365 shares at $95.11 of Armstrong World Industries¹⁰
• Apr 19, 2022Shares withheld for tax 1,051 shares at $92.81 of Armstrong World Industries¹⁰
• Apr 19, 2022Exercised options 2,416 shares of Armstrong World Industries¹⁰
• May 3, 2021Sold 200 shares at $105.88 of Armstrong World Industries¹¹
• May 3, 2021Sold 3,042 shares at $105.24 of Armstrong World Industries¹¹
• May 3, 2021Sold 1,656 shares at $104.37 of Armstrong World Industries¹¹
• Apr 5, 2021Shares withheld for tax 3,363 shares at $92.60 of Armstrong World Industries¹²
• Apr 5, 2021Exercised options 9,211 shares of Armstrong World Industries¹²
• Jan 14, 2021Sold 4,897 shares at $85.00 of Armstrong World Industries¹³
• Dec 3, 2020Sold 33,423 shares at $80.00 of Armstrong World Industries¹⁴
• Dec 3, 2020Exercised options 16,084 shares at $80.00 of Armstrong World Industries¹⁴
• Dec 3, 2020Exercised options 17,339 shares at $80.00 of Armstrong World Industries¹⁴
• Nov 24, 2020Sold 300 shares at $80.04 of Armstrong World Industries¹⁵
• Nov 24, 2020Exercised options 100 shares at $80.04 of Armstrong World Industries¹⁵