Michael D. Slessor owns 0.58% of Formfactor
455,596 shares as of the October 14, 2026 filing, worth $47.8M at the latest close.
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Free.
The stake
0.58%
worth $47.8M at the latest close
Stake rank
#737
by dollar value of the stake
Last sale
5 days ago
Oct 14, 2026
Last buy
None
no purchases since 2016
Michael D. Slessor owns 0.58% of FORMFACTOR INC: 455,596 of 78,120,725 shares, worth about $47.8M at the 2026-10-16 close. The stake has moved from 0.34% in 2016 to 0.58% on 2026-10-14, across 42 sales and 0 purchases that moved it since 2016. The last trade that moved it was a planned sale of $1.4M on 2026-10-14.
How the stake is held
as of the Oct 14, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Oct 14, 2026 · Form 4 ↗
HELD DIRECTLY
455,596
100.0%
THE STAKE
455,596
0.58%