Mark A. Hershey owns 0.15% of Armstrong World Industries
64,777 shares as of the April 8, 2026 filing, worth $10.9M at the latest close.
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Free.
The stake
0.15%
worth $10.9M at the latest close
Stake rank
#1,658
by dollar value of the stake
Last sale
1,356 days ago
Feb 1, 2023
Last buy
None
no purchases since 2021
Mark A. Hershey owns 0.15% of ARMSTRONG WORLD INDUSTRIES INC: 64,777 of 42,262,826 shares, worth about $10.9M at the 2026-10-16 close. The stake has moved from 0.01% in 2016 to 0.15% on 2026-07-23, across 3 sales and 0 purchases that moved it since 2016. The last trade that moved it was a sale of $547,757 on 2023-02-01.
How the stake is held
as of the Apr 8, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Apr 8, 2026 · Form 4 ↗
HELD DIRECTLY
64,777
100.0%
THE STAKE
64,777
0.15%