# Thomas P. Gallagher

> Thomas P. Gallagher is a co-founder, chairman and chief executive officer of Miami International Holdings, the company behind MIAX. A former founding partner of Princeton securities law firm Gallagher, Briody & Butler, he has chaired the company since 2008 and served as CEO since 2012. His exchange leadership also includes Bermuda, MIAX Futures and The International Stock Exchange Group.

- **Role:** Co-founder, Chairman and Chief Executive Officer at Miami International Holdings (MIAX)
- **Organizations:** Miami International Holdings, Inc. (MIAX), MIAX Futures Exchange, Bermuda Stock Exchange, The International Stock Exchange Group Limited, Gallagher, Briody & Butler, The Hun School of Princeton
- **Nationality:** American and Irish; Gallagher described himself as a dual citizen during a 2021 SALT panel.
- **Education:** Bachelor of Arts, Rutgers University, Juris Doctor, Capital University Law School
- **Known for:** Co-founded MIAX and led the company as CEO from the year its first options exchange launched., Led MIAX through its 2025 IPO on the New York Stock Exchange., Oversaw the addition of a physical options trading floor in Miami in 2025.

## Career timeline

- **2005-2014** — Served on The Hun School of Princeton Board of Trustees; later identified as a trustee emeritus.
- **2008** — Began serving as chairman of Miami International Holdings and the MIAX exchanges.
- **2012** — Became CEO; joined full time in December after his association with Gallagher, Briody & Butler. MIAX launched its first options exchange that year.
- **2019** — Joined the Bermuda Stock Exchange Council in July and the MGEX board in October.
- **2020** — Became chairman of the Bermuda Stock Exchange Council in February.
- **2021** — Became chairman of the MGEX board in June; the exchange is now MIAX Futures.
- **2025** — Became TISEG chairman in June; led MIAX through its NYSE IPO and the launch of the Miami Sapphire trading floor.
- **2026** — Received the FOW Chief Executive of the Year award in February.

## Achievements

- Co-founded MIAX and led the company as CEO from the year its first options exchange launched.
- Led MIAX through its 2025 IPO on the New York Stock Exchange.
- Oversaw the addition of a physical options trading floor in Miami in 2025.
- Named Chief Executive of the Year at the FOW International Awards 2026.

## Latest updates

- **2026-09** — MIAX announced OCC clearing membership for Dorman Trading and a $40 million increase in its net capital; Gallagher described the membership as supporting easier access to MIAX financial futures.
- **2026-08** — Gallagher discussed Q2 results as MIAX reported $141.1 million in net revenue and confirmed its Bloomberg index futures suite was live.
- **2026-05** — MIAX announced the launch of Tini Bloomberg 100 Index Futures.
- **2026-02** — Named FOW Chief Executive of the Year at the February 12 awards in London.

## Links

- Website: https://www.miaxglobal.com/company/about/leadership
- LinkedIn: https://www.linkedin.com/in/thomas-gallagher-39638b197

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Profile page: https://yespress.io/thomas-p-gallagher
Published by YesPress — https://yespress.io
Last updated: 2026-10-15