Formfactor Inc (FORM) Insider Ownership

Historic Insider Ownership Trends

As of June 06, 2026, Formfactor's top three insider holders are Mike Slessor (Ceo, 449.56K shares), Raymond A Link (Director, 66.22K shares), Shai Shahar (Cfo, Svp Global Finance, 55.97K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Raymond A Link - 66,225 0 30 May, 2023
Lothar Maier - 6,770 0 15 May, 2024
Kevin J Brewer - 8,105 0 12 Feb, 2026
Dennis Thomas St Executive Chairman 31,526 0 11 Feb, 2026
Jorge Titinger - 17,498 0 10 Feb, 2026
Brian C White - 10,556 0 25 Feb, 2026
Kelley Steven-Waiss - 30,579 0 11 Feb, 2026
Mike Slessor Ceo 449,565 0 15 Apr, 2026
Aric Brendan Mckinnis Cfo, Svp Global Finance 11,140 0 06 Mar, 2026
Sheri Rhodes - 10,356 0 11 Feb, 2026
Shai Shahar Cfo, Svp Global Finance 55,968 0 08 Aug, 2025
Rebeca Obregon-Jimenez - 13,126 0 13 Aug, 2025

* 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 Apr, 2026 Mike Slessor Common Stock D 1,826 $125.24 459,033 D S
15 Apr, 2026 Mike Slessor Common Stock D 1,826 $125.24 459,033 D S
15 Apr, 2026 Mike Slessor Common Stock D 900 $126.58 458,133 D S
15 Apr, 2026 Mike Slessor Common Stock D 900 $126.58 458,133 D S
15 Apr, 2026 Mike Slessor Common Stock D 2,369 $127.65 455,764 D S
15 Apr, 2026 Mike Slessor Common Stock D 2,369 $127.65 455,764 D S
15 Apr, 2026 Mike Slessor Common Stock D 5,432 $128.56 450,332 D S
15 Apr, 2026 Mike Slessor Common Stock D 5,432 $128.56 450,332 D S
15 Apr, 2026 Mike Slessor Common Stock D 767 $129.22 449,565 D S
15 Apr, 2026 Mike Slessor Common Stock D 767 $129.22 449,565 D S
18 Mar, 2026 Mike Slessor Common Stock D 1,900 $94.10 469,186 D S
18 Mar, 2026 Mike Slessor Common Stock D 1,900 $94.10 469,186 D S
18 Mar, 2026 Mike Slessor Common Stock D 1,900 $94.10 469,186 D S
18 Mar, 2026 Mike Slessor Common Stock D 5,495 $95.21 463,691 D S
18 Mar, 2026 Mike Slessor Common Stock D 5,495 $95.21 463,691 D S
18 Mar, 2026 Mike Slessor Common Stock D 5,495 $95.21 463,691 D S
18 Mar, 2026 Mike Slessor Common Stock D 2,832 $95.73 460,859 D S
18 Mar, 2026 Mike Slessor Common Stock D 2,832 $95.73 460,859 D S
18 Mar, 2026 Mike Slessor Common Stock D 2,832 $95.73 460,859 D S
05 Mar, 2026 Aric Brendan Mckinnis Common Stock D 3,462 $90.42 11,140 D S