# Dan Piemont

> Dan Piemont is the co-founder and CEO of Long Wall, the Long Beach defense company formerly known as ABL Space Systems. An MIT physics and economics graduate who came to rocketry through Wall Street trading and venture capital rather than an engineering bench, he spent seven years building low-cost, containerized launch vehicles before pivoting the company in 2024-2025 toward mass-producible missile defense. Long Wall now develops the Cyclops exoatmospheric interceptor, RSX liquid boosters for threat replication, and Ironwood mobile ground systems, repurposing the hard-won technology of a launch startup that survived two failed orbital attempts into a bet on American homeland defense.

- **Role:** Co-founder & CEO at Long Wall
- **Organizations:** Long Wall, ABL Space Systems, National Security Space Association, Morgan Stanley
- **Nationality:** American
- **Education:** B.S., Physics and Economics, Massachusetts Institute of Technology (MIT)
- **Known for:** Co-founded ABL Space Systems and raised more than $500 million in venture funding and contracts, Secured a $60 million U.S. Space Force / Air Force Strategic Funding Increase contract in 2023, Built a vertically integrated rocket and ground-systems company reaching a reported multibillion-dollar valuation

## Career timeline

- **pre-2017** — Studied physics and economics at MIT, where he met co-founder Harry O'Hanley
- **pre-2017** — Worked roughly four years in sales and trading at Morgan Stanley, with stints in venture capital at First Round and Redpoint Ventures
- **2017** — Co-founded ABL Space Systems with Harry O'Hanley; served as President and CFO
- **2021** — ABL leased facilities at the Port of Long Beach, formerly used by Sea Launch
- **2023** — Won $60M U.S. Space Force / Air Force Strategic Funding Increase contract; RS1 first orbital launch attempt fails
- **2024** — Second RS1 orbital attempt fails; company raises over $500M lifetime; announces pivot to defense and Piemont becomes CEO
- **2025** — ABL rebrands as Long Wall (Feb 19, 2025); unveils Cyclops interceptor, RSX boosters, Ironwood ground systems

## Achievements

- Co-founded ABL Space Systems and raised more than $500 million in venture funding and contracts
- Secured a $60 million U.S. Space Force / Air Force Strategic Funding Increase contract in 2023
- Built a vertically integrated rocket and ground-systems company reaching a reported multibillion-dollar valuation
- Led the rebrand and strategic pivot from commercial launch to missile defense as Long Wall
- Director at the National Security Space Association

## Latest updates

- **2025-02** — ABL Space Systems rebrands as Long Wall and unveils a defense-focused product line including the Cyclops interceptor.
- **2025-11** — Reported latest fundraising activity for Long Wall as it scales defense manufacturing in Long Beach.

## Links

- Website: https://www.lwall.com/
- LinkedIn: https://www.linkedin.com/in/dan-piemont/
- Twitter/X: https://x.com/danpiemont

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Profile page: https://yespress.io/dan-piemont
Published by YesPress — https://yespress.io
Last updated: 2026-06-25