# Jeremy Rassen

> Jeremy Rassen is a New York-based computer scientist, researcher, and Aetion co-founder whose career connects Silicon Valley database software, Harvard research, and analytical software entrepreneurship. He previously served as Aetion’s president, CTO, and CEO. Datavant acquired Aetion in 2025; Rassen subsequently announced his departure. ISPOR’s 2026 speaker listings affiliate him with Arpeggio Solutions.

- **Role:** Computer scientist, researcher, entrepreneur, and former software company executive
- **Organizations:** Aetion, a Datavant Company (co-founder; former executive), Arpeggio Solutions (2026 conference affiliation; title unverified), Harvard University (alumnus and former faculty member), Brigham and Women’s Hospital (former appointment), E.piphany (former employee), Hewlett-Packard (former employee)
- **Education:** Bachelor of Arts in Computer Science, Harvard College, Master of Science in Epidemiology, Harvard T.H. Chan School of Public Health, Doctor of Science in Epidemiology, Harvard T.H. Chan School of Public Health
- **Known for:** Co-founded Aetion in 2013., Named co-inventor on E.piphany database patents US6161103 and US6189004., Held scientific, technology, and executive leadership roles at Aetion.

## Career timeline

- **Before Harvard faculty appointment** — Worked in Silicon Valley at Hewlett-Packard and E.piphany on software for large databases.
- **1998** — Named as co-inventor on E.piphany datamart patent applications filed May 6.
- **2000** — Datamart aggregation patent US6161103 granted December 12.
- **2001** — Datamart query-interface patent US6189004 granted February 13.
- **2008-2014** — Brigham and Women’s Hospital employment recorded in his self-asserted ORCID profile.
- **2013** — Co-founded Aetion.
- **2016-2017** — Served an earlier term as Aetion CEO, according to the company’s September 2024 announcement.
- **2017** — Discussed Aetion’s $11.2 million Series A, led by Flare Capital with Lakestar, in an AlleyWatch interview.
- **2024-06** — Assumed interim CEO role at Aetion.
- **2025-01** — Confirmed as Aetion CEO on January 9.
- **2025-05** — Led Aetion when Datavant announced its acquisition agreement on May 15.
- **2025-08** — Quoted as co-founder in the August 22 launch announcement for Activate.
- **By 2026-10** — Public LinkedIn departure announcement available; 2026 conference listings affiliate him with Arpeggio Solutions.

## Achievements

- Co-founded Aetion in 2013.
- Named co-inventor on E.piphany database patents US6161103 and US6189004.
- Held scientific, technology, and executive leadership roles at Aetion.
- Led Aetion as CEO during the announcement of its acquisition by Datavant in 2025.

## Latest updates

- **2025-01** — Aetion confirmed him as CEO after he had served as interim CEO since June 2024.
- **2025-05** — Datavant announced an agreement to acquire Aetion while Rassen was CEO.
- **2025-07** — Patti’s People published an interview with him on July 6, recorded before the acquisition.
- **2025-08** — Datavant quoted him as Aetion co-founder in its Activate launch announcement.
- **2026-10** — Research check: LinkedIn publicly records his departure from Aetion; ISPOR’s upcoming November 8 course lists his affiliation as Arpeggio Solutions. Exact departure date and new title are not verified.

## Links

- LinkedIn: https://www.linkedin.com/in/jeremy-rassen

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Profile page: https://yespress.io/jeremy-rassen
Published by YesPress — https://yespress.io
Last updated: 2026-10-25