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FORMFACTOR INC

FORM · CIK 0001039399

SEC FORM 4
$910,919.62

FORMFACTOR INC (FORM)

Sale of 8,737 shares at $104.26 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Sep 16, 2026 · Disclosed Sep 17, 2026

Source: SEC Form 4 · 0001628280-26-062602 · filed 2026-09-17 · View filing →

SEC FORM 4
$817,097.76

FORMFACTOR INC (FORM)

Sale of 7,773 shares at $105.12 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Sep 16, 2026 · Disclosed Sep 17, 2026

Source: SEC Form 4 · 0001628280-26-062602 · filed 2026-09-17 · View filing →

SEC FORM 4
$105,800.00

FORMFACTOR INC (FORM)

Sale of 1,000 shares at $105.80 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Sep 16, 2026 · Disclosed Sep 17, 2026

Source: SEC Form 4 · 0001628280-26-062602 · filed 2026-09-17 · View filing →

SEC FORM 4
$201,810.21

FORMFACTOR INC (FORM)

Sale of 2,100 shares at $96.1001 per share.

Reporting Person STEVEN-WAISS KELLEY · Transaction Code S

Traded Sep 3, 2026 · Disclosed Sep 4, 2026

Source: SEC Form 4 · 0001628280-26-060753 · filed 2026-09-04 · View filing →

SEC FORM 4
$319,483.04

FORMFACTOR INC (FORM)

Sale of 2,482 shares at $128.72 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001628280-26-057485 · filed 2026-08-17 · View filing →

SEC FORM 4
$374,658.60

FORMFACTOR INC (FORM)

Sale of 2,892 shares at $129.55 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001628280-26-057485 · filed 2026-08-17 · View filing →

SEC FORM 4
$428,432.28

FORMFACTOR INC (FORM)

Sale of 3,282 shares at $130.54 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001628280-26-057485 · filed 2026-08-17 · View filing →

SEC FORM 4
$148,106.25

FORMFACTOR INC (FORM)

Sale of 1,125 shares at $131.65 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001628280-26-057485 · filed 2026-08-17 · View filing →

SEC FORM 4
$733,387.50

FORMFACTOR INC (FORM)

Sale of 5,535 shares at $132.50 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001628280-26-057485 · filed 2026-08-17 · View filing →

SEC FORM 4
$91,464.38

FORMFACTOR INC (FORM)

Sale of 686 shares at $133.33 per share.

Reporting Person SLESSOR MIKE · Officer Title CEO · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001628280-26-057485 · filed 2026-08-17 · View filing →