Operator
Thank you for standing by. This is the conference operator. Welcome to the Westport Fuel Systems, Inc. first-quarter 2021 results conference call.
[Operator instructions] The conference is being recorded. I would now like to turn the conference over to Christine Marks, Westport s investor relations representative. Please go ahead, Ms. Marks.
Christine Marks
Investor Relations
Thank you, and good morning, everyone. Welcome to Westport Fuel Systems first-quarter 2021 conference call which is being held to coincide with the press release containing Westport Fuel Systems financial results that was distributed yesterday. On today s call speaking on behalf of Westport Fuel Systems is chief executive officer, David Johnson; and chief financial officer, Richard Orazietti. Attendance at this call is open to the public and to media, but questions will be restricted to the investment community.
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Operator
Greetings and welcome to Clean Energy Fuels Fourth Quarter 2020 Earnings Conference Call. At this time, all participants are in a listen-only mode. A question-and-answer session will follow the formal presentation. [Operator Instructions] Please note this conference is being recorded.
I will now turn the conference over to Robert Vreeland, Chief Financial Officer. Thank you. You may begin.
Robert Vreeland
Chief Financial Officer
Thank you, operator. Earlier this afternoon, Clean Energy released financial results for the quarter and year ending December 31st, 2020. If you did not receive the release, it is available on the Investor Relations section of the company s website at www.cleanenergyfuels.com where the call is also being webcast. There will be a replay available on the website for 30 days.
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Operator
Ladies and gentlemen, thank you for standing by, and welcome to the Aspen Aerogels Q4 2020 earnings call. [Operator instructions] Please be advised that today s conference is being recorded. [Operator instructions] I would now like to hand the conference over to your speaker today, Mr. John Fairbanks.
Please go ahead, sir.
Chief Financial Officer
Thank you. Good afternoon. Thank you for joining us for the Aspen Aerogels conference Call. I m John Fairbanks, Aspen s chief financial officer.
There are a few housekeeping items that I would like to address before turning the call over to Don Young, Aspen s president and CEO. The press release announcing Aspen s financial results and business developments, as well as a reconciliation of management s use of non-GAAP financial measures compared to the most applicable GAAP measures, is available on the Investors section of Aspen s website, www.aerogel.com. Included in the press release is a summary statement of operations, a sum