SLESSOR MIKE (CEO) exercised options at FORMFACTOR INC

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 2 exercises

SLESSOR MIKE

Filed: 8/10/2026ACC: 0001628280-26-055434

InsiderSLESSOR MIKECIK 1590177

→

IssuerFORMFACTOR INCCIK 1039399

DirectorOfficer· CEO

Since Jul 2018

+87.29K

Net shares

Net buyer

$9.65M

Total sold

Open market trades

0B · 0S

Total transactions

317.19K acquired · 229.90K disposed

Non-Derivative Transactions4

Common Stock

Direct

M · Option Exercise

+141.79K

Price / share

—

Trade value

—

% of position

32.6%

8/7/2026

434.70K→576.49K

Common Stock

Direct

F · Tax Withholding

−78.91K

Price / share

$117.39

Trade value

$9.26M

% of position

13.7%

8/7/2026

576.49K→497.59K

Common Stock

Direct

M · Option Exercise

+5.91K

Price / share

—

Trade value

—

% of position

1.2%

8/7/2026

497.59K→503.49K

Common Stock

Direct

F · Tax Withholding

−3.29K

Price / share

$117.39

Trade value

$385.98K

% of position

0.7%

8/7/2026

503.49K→500.21K

Total

Net shares

+65.50K

Net value

-$9.65M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	8/7/2026	M · Option Exercise	+141.79K	—	—	32.6%	434.70K	576.49K
Common Stock Direct	8/7/2026	F · Tax Withholding	−78.91K	$117.39	$9.26M	13.7%	576.49K	497.59K
Common Stock Direct	8/7/2026	M · Option Exercise	+5.91K	—	—	1.2%	497.59K	503.49K
Common Stock Direct	8/7/2026	F · Tax Withholding	−3.29K	$117.39	$385.98K	0.7%	503.49K	500.21K
Total			+65.50K		-$9.65M

Derivative Transactions4

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

27.70K shares

+27.70K

Strike price

Held after

27.70K

Exercisable

—

8/6/2026

Performance-based Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

141.79K shares

+141.79K

Strike price

Held after

141.79K

Exercisable

—

8/7/2026

Performance-based Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

141.79K shares

−141.79K

Strike price

Held after

0.00

Exercisable

—

8/7/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

5.91K shares

−5.91K

Strike price

Held after

0.00

Exercisable

—

8/7/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock27.70K shares	8/6/2026	A · Award	+27.70K	—	27.70K
Performance-based Restricted Stock Units Direct	Common Stock141.79K shares	8/7/2026	A · Award	+141.79K	—	141.79K
Performance-based Restricted Stock Units Direct	Common Stock141.79K shares	8/7/2026	M · Option Exercise	−141.79K	—	0.00
Restricted Stock Units Direct	Common Stock5.91K shares	8/7/2026	M · Option Exercise	−5.91K	—	0.00