UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 2024 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: 001-42187 OneStream, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 87-3199478 ( State or other jurisdictio ...

Exhibit 99.1 O onestream OneStream Announces Third Quarter 2024 Financial Results BIRMINGHAM, Mich., Nov. 7, 2024 /PRNewswire/ -- OneStream, Inc. (Nasdaq: OS), the leading enterprise Finance management platform that modernizes the Office of the CFO by unifying core finance and operational functions -- including financial close, consolidation, reporting, planning and forecasting, today announced financial results for its third quarter ended September 30, 2024. Third Quarter 2024 Financial Highlights • Total ...

BIRMINGHAM, Mich., Nov. 7, 2024 /PRNewswire/ -- OneStream, Inc. (Nasdaq: OS), the leading enterprise Finance management platform that modernizes the Office of the CFO by unifying core finance and operational functions -- including financial close, consolidation, reporting, planning and forecasting, today announced financial results for its third quarter ended September 30, 2024.Third Quarter 2024 Financial Highlights Total Revenue: $129.1 million, an increase of 21% year-over-year. Subscription Revenue: $11 ...