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Formfactor Inc. planned insider sales

In the twelve months since 11 October 2025 insiders at Formfactor Inc. filed 35 Form 144 notices of planned sales, 260,470 shares worth $24.4 million at the time of filing, from 13 sellers. The latest, filed 16 September 2026: Mike Slessor (officer, director), 17,510 shares worth $1.8 million, planned for around 16 September 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleBrokerHow acquiredFiling
16 September 2026Mike SlessorOfficer, Director17,510$1.8 million16 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesPerformance Shares; Restricted StockForm 144
3 September 2026Kelley Lynne Steven-WaissDirector2,100$201,8103 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
14 August 2026Mike SlessorOfficer, Director16,002$2.1 million14 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesPerformance SharesForm 144
15 July 2026Mike SlessorOfficer, Director4,735$560,19715 July 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
15 June 2026Thomas M. St. DennisDirector2,800$424,17215 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
10 June 2026Mike SlessorOfficer, Director11,890$1.4 million10 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 June 2026Kevin J BrewerFormer Director2,528$326,1124 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock Vesting Under a Registered PlanForm 144
2 June 2026Sheri Lynn RhodesDirector6,328$793,5312 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
26 May 2026Kevin J BrewerFormer Director4,000$547,41026 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted stock vesting under a registered planForm 144
21 May 2026Rebeca Obregon-JimenezDirector3,828$484,14621 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
20 May 2026Kevin J Brewer Revocable TrustBoard Member1,577$195,98220 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted stock vesting under a registered planForm 144
20 May 2026Brian C WhiteDirector3,250$409,50020 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
19 May 2026Thomas M. St. DennisDirector1,000$115,84019 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
15 May 2026Kelley Lynne Steven-WaissDirector5,400$678,24115 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
14 May 2026Titinger JorgeDirector4,009$516,29913 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
13 May 2026Mike SlessorOfficer, Director9,438$1.2 million13 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
15 April 2026Mike SlessorOfficer, Director11,294$1.4 million15 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
18 March 2026Mike SlessorOfficer, Director10,227$973,08818 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
5 March 2026Aric McKinnisOfficer3,462$313,0345 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase Plan; Restricted StockForm 144
24 February 2026Brian C WhiteDirector2,300$230,02324 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
18 February 2026Mike SlessorOfficer, Director8,664$815,57718 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
11 February 2026Kevin J Brewer Revocable TrustBoard Member3,000$288,60011 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted stock vesting under a registered planForm 144
10 February 2026Kelley Lynne Steven-WaissDirector2,200$206,13910 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
10 February 2026Thomas M. St. DennisDirector7,431$697,35510 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
10 February 2026Sheri Lynn RhodesDirector7,634$706,97310 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
9 February 2026Jorge TitingerDirector2,000$177,6809 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
9 February 2026Rebeca Obregon-JimenezDirector2,770$265,4229 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
9 February 2026Brian C WhiteDirector5,500$500,2259 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
15 January 2026Mike SlessorOfficer, Director13,088$1.0 million15 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
6 January 2026Mike SlessorOfficer, Director39,606$2.6 million6 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesPerformance SharesForm 144
17 December 2025Mike SlessorOfficer, Director7,669$432,23617 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
2 December 2025Kelley Lynne Steven-WaissDirector2,700$151,1062 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
19 November 2025Mike SlessorOfficer, Director8,403$420,67119 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
17 November 2025Thomas M. St. DennisDirector2,000$99,69317 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 November 2025Shai ShaharOfficer24,127$1.3 million4 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase Plan; Performance SharesForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.

Source

Form 144 filings on EDGAR for Formfactor Inc.: the company's filing index, each notice read from its own XML.

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