Exhibit 99.1 System1 Announces Fourth Quarter and Full Year 2023 Financial Results All Key Financial Results Above the High-End of Guidance Range Fourth Quarter Financial Highlights: • Revenue Increased 9% Over Prior Quarter to $96.1 million • Gross Profit Increased 1% Over Prior Quarter to $25 million • Adjusted Gross Profit Increased 1% Over Prior Quarter to $37.5 million • GAAP Net Loss Decreased 2% Over Prior Quarter to $25 million • Adjusted EBITDA Increased 24% Over Prior Quarter to $10 million Fiscal ...

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 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For transition period from __________ to __________ Commission file number 001-39331 System1, Inc. (Exact name of registrant as specified in its charter) Delaware 92-3978051 (State or other juri ...

System1, Inc. (NYSE:SST) Q3 2023 Earnings Conference Call December 12, 2023 5:00 PM ET Company Participants Kyle Ostgaard - Vice President, Finance Michael Blend - Co-Founder and Chief Executive Officer Tridivesh Kidambi - Chief Financial Officer Conference Call Participants Dan Kurnos - Benchmark Kyle Ostgaard Thank you for standing by, and welcome to the Third Quarter 2023 Conference Call and Webcast for System1. Joining me today to discuss System1's business and financial results are our Co-Founder and C ...

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 30, 2023 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF ☐ 1934 For transition period from __________ to __________ Commission file number 001-39331 System1, Inc. (Exact name of registrant as specified in its charter) Delaware 92-3978051 (State or o ...

Investor Presentation August 2023 Disclaimer Safe Harbor Disclaimer for Forward-Looking Statements This presentation has been prepared by management of System1, Inc. (together with its subsidiaries, collectively “System1”) and does not constitute a prospectus, and should under no circumstances be understood as an offer to sell or the solicitation of an offer to buy securities, nor will there be any sale of securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful pr ...

System1, Inc. (NYSE:SST) Q2 2023 Earnings Conference Call August 9, 2023 5:00 PM ET Company Participants Michael Blend - Co-founder & Chief Executive Officer Tridivesh Kidambi - Chief Financial Officer Conference Call Participants Operator Thank you for standing by, and welcome to the Second Quarter 2023 Conference Call and Webcast for System1. Joining me today to discuss System1’s business and financial results are our Co-founder and CEO, Michael Blend; and our Chief Financial Officer, Tridivesh Kidambi. A ...

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 June 30, 2023 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF ☐ 1934 For transition period from __________ to __________ Commission file number 001-39331 System1, Inc. (Exact name of registrant as specified in its charter) Delaware 92-3978051 (State or other ...

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 31, 2023 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF ☐ 1934 For transition period from __________ to __________ Commission file number 001-39331 System1, Inc. (Exact name of registrant as specified in its charter) Delaware 98-1531250 (State or other ...

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 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For transition period from __________ to __________ Commission file number 001-39331 System1, Inc. (Exact name of registrant as specified in its charter) Delaware 92-3978051 (State or other juri ...

System1, Inc. (NYSE:SST) Q3 2022 Earnings Conference Call November 10, 2022 5:00 PM ET Company Participants Michael Blend – Co-founder and Chief Executive Officer Tridivesh Kidambi – Chief Financial Officer Conference Call Participants Tom Forte – D.A. Davidson Shweta Khajuria – Evercore ISI Dan Kurnos – Benchmark Operator Thank you for standing by, and welcome to the Third Quarter 2022 Conference Call and Webcast for System1. Joining me today to discuss System1Â's business and financial results are our Co- ...