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About
Sebastian Fischer is cofounder and CEO of Wardstone, a space defense company. He brings over a decade of engineering and product experience from roles at Amazon Prime Air, Cruise Self-Driving, Lockheed Martin, and NASA on planetary spacecraft, with an aerospace engineering degree from MIT and dual MS/MBA from Harvard.
CEO at WardstoneYC F25
Intro paths
Sebastian went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Garry Tan, President & CEO of Y Combinator — the partner who ran Wardstone's batch and knows the company first-hand. YC profile ↗
In turn, Sebastian can intro founders to Wardstone's investors below.
Wardstone's investors · 13
Co-founders at Wardstone
Frequently asked questions
- Who is Sebastian Fischer?
- Sebastian Fischer is cofounder and CEO of Wardstone, a space defense company. He brings over a decade of engineering and product experience from roles at Amazon Prime Air, Cruise Self-Driving, Lockheed Martin, and NASA on planetary spacecraft, with an aerospace engineering degree from MIT and dual MS/MBA from Harvard.
- Where does Sebastian Fischer work?
- Sebastian Fischer is CEO of Wardstone.
- What companies did Sebastian Fischer found?
- Sebastian Fischer founded Wardstone.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Massachusetts Institute of Technology mafia1,487
Also came through, then founded or led a company.
Harvard Business School mafia1,305
Also came through, then founded or led a company.
Cruise mafia53
Also came through, then founded or led a company.
Harvard John A. Paulson School of Engineering and Applied Sciences mafia17
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Wardstone's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights