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).
| 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.
| 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 |