# Hooman Radfar

> Hooman Radfar is a San Francisco-based entrepreneur, computer scientist and investor. He co-founded AddThis, later acquired by Oracle, became a founding partner at Expa, and returned to operating as co-founder and CEO of Collective, a financial back-office platform for self-employed business owners. He also leads 10e9 and remains a venture partner at Expa.

- **Role:** Co-founder and CEO at Collective
- **Organizations:** Collective, AddThis (formerly Clearspring Technologies), Expa, 10e9
- **From:** London, United Kingdom
- **Nationality:** American
- **Education:** BSE, Computer Science; BA, Economics, University of Pennsylvania, MS, Information Networking, Carnegie Mellon University
- **Known for:** Co-founded AddThis, which reached approximately 15 million websites and two billion users before its Oracle acquisition., Founding partner at Expa; currently a venture partner., Co-founded Collective, a financial back-office platform for businesses of one.

## Career timeline

- **2004** — Earned his Carnegie Mellon MS and co-founded Clearspring with fellow graduate Austin Fath.
- **2008** — Clearspring acquired AddThis.
- **2011** — Moved from CEO to executive chairman at Clearspring.
- **2012** — Clearspring adopted the AddThis name.
- **2014** — Moved to San Francisco and joined Expa as entrepreneur in residence.
- **2015** — Became a founding partner at Expa.
- **2016** — Oracle acquired AddThis; the merger closed January 27, according to Oracle’s SEC filing.
- **2019** — Collective began building its platform and team.
- **2020** — Collective launched publicly September 29 with co-founders Ugur Kaner and Bugra Akcay.
- **2023** — Announced Collective’s $50 million financing on July 11.
- **2026** — Announced Collective’s acquisition of Open Ledger on April 22.

## Achievements

- Co-founded AddThis, which reached approximately 15 million websites and two billion users before its Oracle acquisition.
- Founding partner at Expa; currently a venture partner.
- Co-founded Collective, a financial back-office platform for businesses of one.
- Recognized in Carnegie Mellon’s 2023 Tartans on the Rise program.
- Early investor or adviser to companies including Uber, Hinge, Sweetgreen and Onfido.

## Latest updates

- **2026-06** — Appeared on LifeStarr’s June 30 interview to discuss self-employment, AI and practical steps for starting a business.
- **2026-04** — Announced that Collective acquired Open Ledger to advance its financial operating system for businesses of one.
- **2025-09** — Discussed internal AI agents and financial tools for members on Built This Week, episode 14.

## Links

- Website: https://10e9.co/
- LinkedIn: https://www.linkedin.com/in/hooman
- Twitter/X: https://x.com/hoomanradfar
- Instagram: https://www.instagram.com/hoomanradfar/

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Profile page: https://yespress.io/hooman-radfar
Published by YesPress — https://yespress.io
Last updated: 2026-10-27