/C O R R E C T I O N -- Ultra Clean Holdings, Inc./

In the news release, UCT Announces Third Quarter 2018 Financial Results, issued 10-Oct-2018 by Ultra Clean Holdings, Inc. over PR Newswire, the headline should read "UCT Announces Third Quarter 2018 Financial Results Release Date" rather than "UCT Announces Third Quarter 2018 Financial Results" as incorrectly transmitted by PR Newswire. The complete, corrected release follows:

HAYWARD, Calif., Oct. 10, 2018 /PRNewswire/ -- Ultra Clean Holdings, Inc. (Nasdaq: UCTT), a leading developer and supplier of critical subsystems, ultra-high purity cleaning and analytical services for the semiconductor and display capital equipment industries, today announced the Company will release its third quarter 2018 financial results on Tuesday, November 6, 2018 after market close and will host a conference call the same day.

The conference call will take place at 1:45 p.m. PT and can be accessed by dialing 1-844-826-3034 (toll-free) or 1-412-317-5179 (international). No passcode is required. An audio replay of the conference call will be made available approximately two hours after the call and will remain available for 7 days. The replay may be accessed by calling 1-877-344-7529 (toll-free) or 1-412-317-0088 (international) and entering the confirmation code 10124276.

A live webcast of the conference call will also be available on the Investor Relations section of the Company's website at http://uct.com/investors/events/. A replay of the webcast will be available approximately two hours after the conclusion of the conference call and will remain available until the following quarter.

About Ultra Clean Holdings, Inc.

Ultra Clean Holdings, Inc. is a leading developer and supplier of critical subsystems, ultra-high purity cleaning and analytical services primarily for the semiconductor and display related industries. Ultra Clean offers its customers an integrated outsourced solution for major subassemblies, improved design-to-delivery cycle times, design for manufacturability, prototyping and component manufacturing. Ultra Clean is headquartered in Hayward, California. Additional information is available at www.uct.com.

Contact:

Rhonda Bennetto
Vice President Investor Relations
(250) 307-9030
[email protected]

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SOURCE Ultra Clean Holdings, Inc.