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Formfactor Inc. insider trading

This tab shows only the shares insiders bought or sold on the open market in the last twelve months (Form 4 codes P and S). Grants, option exercises, shares held back for tax and gifts are left out on purpose, so what is left is insiders trading at the market price like anyone else.

In the last twelve months insiders at Formfactor Inc. filed 72 open-market sales worth $22.0 million and 0 open-market purchases, on Form 4 with the SEC. The latest: Slessor Mike, CEO, sold 8,737 shares at $104.26 on 16 September 2026, filed 17 September 2026.

TradedInsiderRoleTypeSharesPriceValueFiling
16 September 2026Slessor MikeCEOSale8,737$104.26$910,920Form 4
16 September 2026Slessor MikeCEOSale7,773$105.12$817,098Form 4
16 September 2026Slessor MikeCEOSale1,000$105.80$105,800Form 4
3 September 2026Steven-Waiss KelleyDirectorSale2,100$96.10$201,810Form 4
14 August 2026Slessor MikeCEOSale2,482$128.72$319,483Form 4
14 August 2026Slessor MikeCEOSale2,892$129.55$374,659Form 4
14 August 2026Slessor MikeCEOSale3,282$130.54$428,432Form 4
14 August 2026Slessor MikeCEOSale1,125$131.65$148,106Form 4
14 August 2026Slessor MikeCEOSale5,535$132.50$733,388Form 4
14 August 2026Slessor MikeCEOSale686$133.33$91,464Form 4
15 July 2026Slessor MikeCEOSale1,041$116.56$121,339Form 4
15 July 2026Slessor MikeCEOSale1,650$117.39$193,694Form 4
15 July 2026Slessor MikeCEOSale706$118.21$83,456Form 4
15 July 2026Slessor MikeCEOSale170$119.08$20,244Form 4
15 July 2026Slessor MikeCEOSale300$120.58$36,174Form 4
15 July 2026Slessor MikeCEOSale868$121.30$105,288Form 4
15 June 2026St Dennis ThomasDirectorSale2,800$151.49$424,172Form 4
10 June 2026Slessor MikeCEOSale1,399$117.70$164,662Form 4
10 June 2026Slessor MikeCEOSale767$119.00$91,273Form 4
10 June 2026Slessor MikeCEOSale400$119.46$47,784Form 4
10 June 2026Slessor MikeCEOSale975$121.00$117,975Form 4
10 June 2026Slessor MikeCEOSale4,220$121.72$513,658Form 4
10 June 2026Slessor MikeCEOSale2,500$122.63$306,575Form 4
10 June 2026Slessor MikeCEOSale1,629$123.37$200,970Form 4
2 June 2026Rhodes SheriDirectorSale6,328$125.40$793,531Form 4
21 May 2026Obregon-Jimenez RebecaDirectorSale3,828$126.47$484,146Form 4
20 May 2026White Brian CDirectorSale3,250$126.00$409,500Form 4
19 May 2026St Dennis ThomasDirectorSale1,000$115.84$115,840Form 4
15 May 2026Steven-Waiss KelleyDirectorSale5,400$125.60$678,241Form 4
13 May 2026Titinger JorgeDirectorSale4,009$128.78$516,299Form 4
13 May 2026Slessor MikeCEOSale700$122.84$85,988Form 4
13 May 2026Slessor MikeCEOSale1,300$123.72$160,836Form 4
13 May 2026Slessor MikeCEOSale2,984$124.71$372,135Form 4
13 May 2026Slessor MikeCEOSale1,388$125.58$174,305Form 4
13 May 2026Slessor MikeCEOSale398$126.59$50,383Form 4
13 May 2026Slessor MikeCEOSale100$127.47$12,747Form 4
13 May 2026Slessor MikeCEOSale700$128.52$89,964Form 4
13 May 2026Slessor MikeCEOSale700$129.33$90,531Form 4
13 May 2026Slessor MikeCEOSale200$130.57$26,114Form 4
13 May 2026Slessor MikeCEOSale200$132.63$26,526Form 4
13 May 2026Slessor MikeCEOSale66$135.73$8,958Form 4
13 May 2026Slessor MikeCEOSale702$136.15$95,577Form 4
15 April 2026Slessor MikeCEOSale1,826$125.24$228,688Form 4
15 April 2026Slessor MikeCEOSale900$126.58$113,922Form 4
15 April 2026Slessor MikeCEOSale2,369$127.65$302,403Form 4
15 April 2026Slessor MikeCEOSale5,432$128.56$698,338Form 4
15 April 2026Slessor MikeCEOSale767$129.22$99,112Form 4
18 March 2026Slessor MikeCEOSale1,900$94.10$178,790Form 4
18 March 2026Slessor MikeCEOSale5,495$95.21$523,179Form 4
18 March 2026Slessor MikeCEOSale2,832$95.73$271,107Form 4
5 March 2026McKinnis Aric BrendanCFO, SVP Global FinanceSale3,462$90.42$313,034Form 4
24 February 2026White Brian CDirectorSale2,300$100.01$230,023Form 4
18 February 2026Slessor MikeCEOSale834$92.85$77,437Form 4
18 February 2026Slessor MikeCEOSale4,934$93.97$463,648Form 4
18 February 2026Slessor MikeCEOSale2,896$94.79$274,512Form 4
11 February 2026Brewer Kevin JDirectorSale3,000$96.20$288,600Form 4
10 February 2026St Dennis ThomasDirectorSale5,601$93.71$524,894Form 4
10 February 2026St Dennis ThomasDirectorSale1,830$94.24$172,460Form 4
10 February 2026Rhodes SheriDirectorSale7,634$92.61$706,973Form 4
10 February 2026Steven-Waiss KelleyDirectorSale2,200$93.70$206,139Form 4
9 February 2026Obregon-Jimenez RebecaDirectorSale2,770$95.82$265,422Form 4
9 February 2026White Brian CDirectorSale5,500$90.95$500,225Form 4
9 February 2026Titinger JorgeDirectorSale2,000$88.84$177,680Form 4
15 January 2026Slessor MikeCEOSale6,976$76.43$533,176Form 4
15 January 2026Slessor MikeCEOSale6,112$77.24$472,091Form 4
6 January 2026Slessor MikeCEOSale39,606$65.00$2.6 millionForm 4
17 December 2025Slessor MikeCEOSale5,606$56.19$315,001Form 4
17 December 2025Slessor MikeCEOSale2,063$56.82$117,220Form 4
2 December 2025Steven-Waiss KelleyDirectorSale2,700$55.97$151,106Form 4
19 November 2025Slessor MikeCEOSale4,739$49.65$235,291Form 4
19 November 2025Slessor MikeCEOSale3,664$50.60$185,398Form 4
17 November 2025St Dennis ThomasDirectorSale2,000$49.85$99,693Form 4

A filing with several lines appears once per line.

Source

Form 4 filings on EDGAR for Formfactor Inc.: the company's filing index.

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