Quarterly revenues of $51.0 million, up 10.5% sequentially and up 37% year over year; EPS of $0.12.

LIVERMORE, CA — April 20, 2005 — FormFactor, Inc. (Nasdaq: FORM) today announced its financial results for the first quarter of fiscal year 2005, ended March 26, 2005. Quarterly revenues were $51.0 million, up 10.5% from $46.1 million in the fourth quarter of fiscal year 2004, and up 37.3% from $37.1 million for the first quarter of fiscal year 2004.

Operating income for the first quarter of fiscal year 2005 was 13.1% of revenues, compared to 11.3% for the fourth quarter of fiscal year 2004, due to higher revenues. Operating income for the first quarter of fiscal year 2005 and for the fourth quarter of fiscal 2004 was reduced by startup costs related to the new manufacturing facility of $4.4 million and $2.9 million, respectively. Operating income for the first quarter of fiscal year 2004 was 22.0% of revenues.

Net income for the first quarter of fiscal year 2005 was $4.9 million or $0.12 per share on a fully diluted basis, compared to $5.8 million or $0.14 per share on a fully diluted basis for the fourth quarter of fiscal year 2004, and $5.1 million or $0.13 per share on a fully diluted basis for the first quarter of fiscal year 2004.

Bookings of $50.9 million for the first quarter of fiscal year 2005 increased 24.9% from $40.7 million for the fourth quarter of fiscal year 2004 and were up 1.6% from $50.0 million for the first quarter of fiscal year 2004.

Igor Khandros, CEO of FormFactor stated, “Following 81% year over year growth in 2004, we have begun 2005 with solid operating performance, while staying on track with the ramp up of our new facility.” In addition, Joe Bronson, President stated, “Our customer product qualifications are proceeding to plan and customers have been impressed with the new facility and its capabilities. Additionally, our existing factory momentum has enabled us to improve on time delivery and order cycle time to our customers.”

The Company has posted a factory transition analysis and its revenue breakdown by region and market segment on the Investors section of its website at www.formfactor.com. FormFactor will conduct a conference call at 1:30 p.m. PDT, or 4:30 p.m. EDT, today. The public is invited to listen to a live web cast of FormFactor’s conference call on the Investor section of the Company’s website at www.formfactor.com. A replay of the web cast will be available approximately two hours after the conclusion of the call. An audio replay of the conference call will also be made available approximately two hours after the conclusion of the call. The audio replay will remain available until April 24, 2005 at 9:00 p.m. PDT and can be accessed by dialing (800) 642-1687 or (706) 645- 9291 and entering confirmation code 5382958.