Lam Research
Q3 2022 Earnings Call
Oct 19, 2022, 5:00 p.m. ET
Contents:
- Prepared Remarks
- Questions and Answers
- Call Participants
Prepared Remarks:
Operator
Good day, and welcome to the Lam Research September 2022 quarter earnings conference call. At this time, I would like to turn the conference over to Ms. Tina Correia. Please go ahead, ma'am.
Tina Correia -- Corporate Vice President, Corporate Finance and Investor RelationsP
Thank you, operator, and good afternoon, everyone. Welcome to the Lam Research quarterly earnings conference call. With me today are Tim Archer, president and chief executive officer; and Doug Bettinger, executive vice president and chief financial officer. During today's call, we will share our overview on the business environment, and we'll review our financial results for the September 2022 quarter and our outlook for the December 2022 quarter.
A press release detailing our financial results was distributed a little after 1:00 p.m. Pacific Time this afternoon. The release can also be found on the Investor Relations section of the company's website, along with the presentation slides that accompany today's call. Today's presentation and Q&A include forward-looking statements that are subject to risks and uncertainties reflected in the risk factors disclosed in our SEC public filings.
Please see accompanying slides in the presentation for additional information. Today's discussion of our financial results will be presented on a non-GAAP financial basis, unless otherwise specified. A detailed reconciliation between GAAP and non-GAAP results can be found in the accompanying slides in the presentation. This call is scheduled to last until 3:00 p.m.
Pacific Time. A replay of this call will be made available later this afternoon on our website. And with that, I'll hand the call over to Tim.
Tim Archer -- President and Chief Executive Officer
Thank you, Tina, and thank you to everyone joining the call today. Our September quarter results reflect continued strong execution by Lam, with revenues topping $5 billion for the first time in the company's history. Gross margins came in at the higher end of guidance and operating margin and earnings per share both exceeded the guidance range. As you can see from our press release today, we also expect solid performance in the December quarter despite the challenging environment.
Recently, the United States government announced new export regulations for U.S. semiconductor technology sold in China, including wafer fabrication equipment and related parts and services. We have taken the necessary steps to ensure full compliance with the rules and have ceased shipments and support as required. Our financial guidance issued today for the December quarter includes the impact of these changes.