UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 (Exact name of Registrant as specified in its charter) Delaware 61-1430858 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 25, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-50646 Ultra Clean Holdings, Inc. (State or other jurisdict ...

Ultra Clean Holdings, Inc. (NASDAQ:UCTT) Q4 2020 Earnings Conference Call February 17, 2021 4:45 PM ET Company Participants Rhonda Bennetto – Investor Relations Jim Scholhamer – Chief Executive Officer Sheri Savage – Chief Financial Officer Conference Call Participants Tom Diffely – D.A. Davidson Krish Sankar – Cowen and Company Quinn Bolton – Needham & Company Patrick Ho – Stifel Christian Schwab – Craig-Hallum Capital Group Operator Good afternoon, and welcome to the Ultra Clean Fourth Quarter and Full Ye ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 25, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-50646 Ultra Clean Holdings, Inc. (Exact name of registrant as specified in its charter) Delaware 61-1430858 (State or other ...

Ultra Clean Holdings, Inc. (NASDAQ:UCTT) Q3 2020 Earnings Conference Call October 28, 2020 4:45 PM ET Company Participants Rhonda Bennetto - Investor Relations Jim Scholhamer - Chief Executive Officer Sheri Savage - Chief Financial Officer Conference Call Participants Charles Shi - Needham & Company Patrick Ho - Stifel Tom Diffely - D.A. Davidson Operator Good afternoon and welcome to the Ultra Clean Third Quarter Conference Call. [Operator Instructions]. Please note, this event is being recorded. I would l ...

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 26, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) For the transition period from to Commission file number 000-50646 Ultra Clean Holdings, Inc. (Exact name of registrant as specified in its charter) Delaware 61-1430858 (State or other juris ...

Ultra Clean Holdings, Inc. (MAT) Q2 2020 Earnings Conference Call July 29, 2020 6:30 PM ET Company Participants Rhonda Bennetto - VP, IR James Scholhamer - CEO & Director Sheri Savage - SVP, Finance & CFO Conference Call Participants Krish Sankar - Cowen and Company Quinn Bolton - Needham & Co. Patrick Ho - Stifel Christian Schwab - Craig-Hallum Capital Group Tom Diffely - D.A. Davidson Colin Du - MacKenzie Investments Operator Good afternoon, and welcome to the Ultra Clean Second Quarter Conference Call an ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 27, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-50646 Ultra Clean Holdings, Inc. (Exact name of registrant as specified in its charter) Delaware 61-1430858 (State or other jurisdi ...

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Ultra Clean Holdings, Inc. (NASDAQ:UCTT) Q1 2020 Earnings Conference Call April 29, 2020 4:45 PM ET Company Participants Rhonda Bennetto - VP, IR James Scholhamer - CEO & Director Sheri Savage - SVP, Finance & CFO Conference Call Participants Patrick Ho - Stifel, Nicolaus & Company Karl Ackerman - Cowen and Company Christian Schwab - Craig-Hallum Capital Group David Duley - Steelhead Securities Richard Ryan - Dougherty & Company Operator Good afternoon, and welcome to the Ultra Clean Technology Q1 2020 Earn ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 27, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-50646 Ultra Clean Holdings, Inc. (Exact name of Registrant as specified in its charter) Delaware 61-1430858 (State or other jurisdict ...