CISO tenure record
OneStream: CISO in seat since December 2020, unnamed in the filing
OneStream's fiscal 2025 Form 10-K describes its Chief Information Security Officer's tenure since December 2020 without naming the person.
OneStream, Inc.'s Form 10-K for the fiscal year ended December 31, 2025, filed February 26, 2026, states that its Chief Information Security Officer joined the company in May 2017 and has served as CISO since December 2020 — nearly five years in the seat as of this filing. The filing describes this person only by title, never by name.
The filing credits the CISO with more than 29 years of cybersecurity experience in the commercial and government sectors, and states that the role reports directly to the company's Chief Risk Officer.
It also says the CISO and the CRO both sit on OneStream's Operations and Risk Committee, a management committee that monitors risks including cybersecurity across the company.
Where a filing does not name its CISO, this record says so plainly rather than guessing; the tenure fact itself — a role held since a stated date — still comes directly from the filing's own words. See the CISO tenure record for other companies on this list, several of which do name the person in the seat.