Ultra Clean Reports Revised Third Quarter Guidance and Announces Earnings Conference Call

Ultra Clean Reports Revised Third Quarter Guidance and Announces Earnings
Conference Call

HAYWARD, Calif., Oct. 8 /PRNewswire-FirstCall/ -- Ultra Clean Holdings, Inc.
(Nasdaq: UCTT), a leading developer and supplier of critical subsystems for
the semiconductor capital equipment, medical device, research, flat panel and
solar industries, today announced that it has revised its previously issued
financial outlook for the quarter ending October 2, 2009 to reflect continued
improvement in semiconductor equipment market conditions. The Company's
original Q3'09 guidance of revenue between $30 and $36 million, and loss per
share between ($0.16) and ($0.24), has been revised to revenue between $39 and
$41 million and loss per share between ($0.09) and ($0.11), on a GAAP basis.
The foregoing are estimates only and subject to review by our external
auditors and change in connection with the finalization of our third quarter
financial results.

Clarence Granger, Chairman and Chief Executive Officer of Ultra Clean said,
"We exceeded the high-end of our third quarter guidance as a result of
improvement in semiconductor capital equipment industry-wide demand. We
believe we have demonstrated that we are well positioned to take advantage of
the market recovery."

We will release financial results for our third quarter of 2009 ended October
2, 2009 on Monday, October 26, 2009 after market close. Ultra Clean will
conduct a conference call the same day, beginning at 2:00 p.m. PDT at
888-561-5097 (domestic) and 706-679-7569 (international). A replay of the
webcast will be available for fourteen days following the conference call at
800-642-1687 (domestic) and 706-645-929 (international). The confirmation
number for the live broadcast and replays is 35241175 (all callers). The
conference call will also be webcast live and be available for fourteen days
on our website.

About Ultra Clean Holdings, Inc.

Ultra Clean Holdings, Inc. is a leading developer and supplier of critical
subsystems for the semiconductor capital equipment, medical device, research,
flat panel and solar industries. Ultra Clean offers its customers an
integrated outsourced solution for gas delivery systems and other
subassemblies, improved design-to-delivery cycle times, component neutral
design and manufacturing and component testing capabilities. Ultra Clean's
customers are primarily original equipment manufacturers for the semiconductor
capital equipment, flat panel, solar and medical device industries. Ultra
Clean is headquartered in Hayward, California. Additional information is
available at www.uct.com.

Safe Harbor Statement

The foregoing information contains, or may be deemed to contain,
"forward-looking statements" (as defined in the US Private Securities
Litigation Reform Act of 1995) which reflect our current views with respect to
future events and financial performance. We use words such as "anticipates,"
"believes," "plan," "expect," "future,"' "intends," "may," "will," "should,"
"estimates," "predicts," "potential," "continue" and similar expressions to
identify these forward-looking statements. Forward looking statements included
in the press release include estimates made with respect to our third quarter
2009 revenue and loss per share. All forward-looking statements address
matters that involve risks and uncertainties. Accordingly, our actual results
may differ materially from the results predicted or implied by these forward-
looking statements. These risks, uncertainties and other factors include,
among others, those identified in "Risk Factors," "Management's Discussion and
Analysis of Financial Condition and Results of Operations'' and elsewhere in
our annual report on Form 10-K for the year ended January 2, 2009 and
quarterly report on Form 10-Q for the quarter ended July 3, 2009, filed with
the Securities and Exchange Commission. Ultra Clean Holdings, Inc. undertakes
no obligation to publicly update or review any forward-looking statements,
whether as a result of new information, future developments or otherwise.

SOURCE Ultra Clean Holdings, Inc.

Casey Eichler of Ultra Clean Technology, +1-510-576-4704