Formfactor Inc (FORM) Insider Ownership

Historic Insider Ownership Trends

Data spanning the past 90 days through January 16, 2026 reveals that Formfactor's three principal insider shareholders consist of Ceo Mike Slessor (472.91K shares), Director Raymond A Link (66.22K shares), Cfo And Svp Global Finance Shai Shahar (55.97K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Mike Slessor Ceo 472,907 15 Jan, 2026
Raymond A Link 66,225 30 May, 2023
Shai Shahar Cfo And Svp Global Finance 55,968 08 Aug, 2025
Dennis Thomas St 38,957 17 Nov, 2025
Kelley Steven-Waiss 32,779 02 Dec, 2025
Edward Jr Rogas 22,098 18 May, 2021
Jorge Titinger 19,498 16 May, 2025
Brian C White 18,356 16 May, 2025
Sheri Rhodes 17,990 16 May, 2025
Rebeca Obregon-Jimenez 13,126 13 Aug, 2025
Aric Brendan Mckinnis Cfo And Svp Global Finance 12,274 03 Dec, 2025
Kevin J Brewer 11,105 16 May, 2025
Lothar Maier 6,770 15 May, 2024

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
15 Jan, 2026 Mike Slessor Common Stock D 6,976 $76.43 479,019 D S
15 Jan, 2026 Mike Slessor Common Stock D 6,112 $77.24 472,907 D S
06 Jan, 2026 Mike Slessor Common Stock D 39,606 $65.00 485,995 D S
17 Dec, 2025 Mike Slessor Common Stock D 5,606 $56.19 527,664 D S
17 Dec, 2025 Mike Slessor Common Stock D 2,063 $56.82 525,601 D S
02 Dec, 2025 Kelley Steven-Waiss Common Stock D 2,700 $55.96 32,779 D S
02 Dec, 2025 Kelley Steven-Waiss - - 32,779 D
02 Dec, 2025 Aric Brendan Mckinnis Common Stock A 773 $0.00 12,467 D M
02 Dec, 2025 Aric Brendan Mckinnis Common Stock D 193 $56.04 12,274 D F
19 Nov, 2025 Mike Slessor Common Stock D 3,664 $50.60 533,270 D S
19 Nov, 2025 Mike Slessor Common Stock D 4,739 $49.65 536,934 D S
17 Nov, 2025 Dennis Thomas St Common Stock D 2,000 $49.85 38,957 D S
17 Nov, 2025 Dennis Thomas St - - 38,957 D
07 Nov, 2025 Mike Slessor Common Stock D 3,282 $52.25 541,673 D F
07 Nov, 2025 Mike Slessor Common Stock A 5,908 $0.00 544,955 D M
06 Nov, 2025 Mike Slessor Common Stock D 3,351 $54.22 539,047 D F
06 Nov, 2025 Mike Slessor Common Stock A 6,031 - 542,398 D M
05 Nov, 2025 Mike Slessor Common Stock A 3,644 - 538,392 D M
05 Nov, 2025 Mike Slessor Common Stock D 2,025 $55.36 536,367 D F
05 Nov, 2025 Aric Brendan Mckinnis - - 11,694 D