 HAYWARD, Calif., Aug. 23, 2021 PRNewswire -- Ultra Clean Holdings, Inc. Nasdaq: UCTT, today announced its participation at the following conferences in the third quarter: August 24, 2021: Needham Virtual 2nd Annual SemiCap and EDA ConferenceFormat: 1X1 only September 9, 2021: Colliers 2021 Institutional Investor ConferenceFormat: 1X1 only The presentation material utilized for the conferences is available on the investor relations page of UCTs website at ir.uct.com. 