Xcimer Energy Corporation
Xcimer is developing high-energy excimer lasers for commercial fusion energy and national-security applications.
UndisclosedMinority investment
ParticipantRV
RTX Ventures
Activity from announced rounds
Activity in this selectionOct 16, 2026 · Jul 19, 2026
RTX Ventures invests in early-stage technologies relevant to aerospace and defense and connects portfolio companies with RTX expertise.
Investment focus
RTX’s venture arm combines capital with access to the group’s technical and commercial resources. Its team draws on backgrounds in academia, finance, technology and industry.
Activity recorded by RoundOS
Recorded examples include Hermeus’ high-speed aircraft, JetZero’s all-wing aircraft, Efficient Computer’s processor architecture and Xcimer’s high-energy lasers. The entries span aviation, computing and directed-energy technology; they represent selected transactions in RoundOS.
Sources
- Rounds participated in
- 1
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 1 First participation on record · 0 follow-on
- Funding in participating rounds
- — 0 disclosed · full round size, not this investor’s share