Formfactor FORM Insider Ownership

NASDAQ FORM
$114.95 +2.83 (+2.52%)
As of: Sep 11, 2026 · 3:59 PM EDT

Insider Holdings by Owner

671.82K Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
0.949%
+0.062% pp QoQ
Shares Held by Insiders
738.05K
filed for Sep 2026
+6.98% QoQ
Shares Outstanding
77.73Mn
77,734,000 shares
Direct Holdings
738.05K
Indirect: 0
Net Shares Traded (QoQ)
+48.17K
net buying in Sep 2026
Insiders Holding Shares
11
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

As of September 09, 2026, the three largest insider holders of FORM are Mike Slessor (Ceo, 484.20K shares), Shai Shahar (Cfo, Svp Global Finance, 55.97K shares), Shai Shahar (Cfo, Svp Global Finance, 55.97K shares).

Form 4 Holdings

Insiders Holding FORM

Insiders 11
Shares held 671.82K
Of outstanding 0.864%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Mike Slessor Ceo 484,204 0 484,204 72.1% 17 Aug, 2026
2 Shai Shahar Cfo, Svp Global Finance 55,968 0 55,968 8.3% 08 Aug, 2025
3 Dennis Thomas St Executive Chairman 28,333 0 28,333 4.2% 16 Jun, 2026
4 Kelley Steven-Waiss Director 24,426 0 24,426 3.6% 04 Sep, 2026
5 Rebeca Obregon-Jimenez Director 21,001 0 21,001 3.1% 22 May, 2026
6 Jorge Titinger Director 14,836 0 14,836 2.2% 19 May, 2026
7 Aric Brendan Mckinnis Cfo, Svp Global Finance 14,152 0 14,152 2.1% 07 Aug, 2026
8 Brian C White Director 8,653 0 8,653 1.3% 21 May, 2026
9 Kevin J Brewer Director 8,105 0 8,105 1.2% 12 Feb, 2026
10 Lothar Maier Director 6,770 0 6,770 1.0% 15 May, 2024
11 Sheri Rhodes Director 5,375 0 5,375 0.8% 04 Jun, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

3,294 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
03 Sep, 2026 Kelley Steven-Waiss Director Disposed S 2,100 $96.10 $201.81K 24,426 Direct
14 Aug, 2026 Mike Slessor Ceo Disposed S 2,482 $128.72 $319.48K 497,724 Direct
14 Aug, 2026 Mike Slessor Ceo Disposed S 2,892 $129.55 $374.66K 494,832 Direct
14 Aug, 2026 Mike Slessor Ceo Disposed S 3,282 $130.54 $428.43K 491,550 Direct
14 Aug, 2026 Mike Slessor Ceo Disposed S 1,125 $131.65 $148.11K 490,425 Direct
14 Aug, 2026 Mike Slessor Ceo Disposed S 5,535 $132.50 $733.39K 484,890 Direct
14 Aug, 2026 Mike Slessor Ceo Disposed S 686 $133.33 $91.46K 484,204 Direct
06 Aug, 2026 Aric Brendan Mckinnis Cfo, Svp Global Finance Acquired A 6,924 $0.00 $0 6,924 Direct
07 Aug, 2026 Mike Slessor Ceo Acquired M 141,792 $0.00 $0 576,494 Direct
07 Aug, 2026 Mike Slessor Ceo Disposed F 78,908 $117.39 $9.26Mn 497,586 Direct
07 Aug, 2026 Mike Slessor Ceo Acquired M 5,908 $0.00 $0 503,494 Direct
07 Aug, 2026 Mike Slessor Ceo Disposed F 3,288 $117.39 $385.98K 500,206 Direct
06 Aug, 2026 Mike Slessor Ceo Acquired A 27,696 $0.00 $0 27,696 Direct
07 Aug, 2026 Mike Slessor Ceo Acquired A 141,792 $0.00 $0 141,792 Direct
07 Aug, 2026 Mike Slessor Ceo Disposed M 141,792 $0.00 $0 0 Direct
07 Aug, 2026 Mike Slessor Ceo Disposed M 5,908 $0.00 $0 0 Direct
05 Aug, 2026 Aric Brendan Mckinnis Cfo, Svp Global Finance Acquired M 521 $0.00 $0 13,457 Direct
05 Aug, 2026 Mike Slessor Ceo Acquired M 3,644 $0.00 $0 434,056 Direct
05 Aug, 2026 Mike Slessor Ceo Disposed F 2,028 $114.44 $232.08K 432,028 Direct
05 Aug, 2026 Aric Brendan Mckinnis Cfo, Svp Global Finance Disposed F 130 $114.44 $14.88K 13,327 Direct