Top 10 SpaceTech Capital Raises and Investors in the U.S. – November 16th – December 31st, 2025
Several interesting transactions closed in the SpaceTech sector over the past month. If you would like more info on these deals or would like to discuss the capital raising market for your company, please contact me.
Early Stage VC
- Antares Nuclear, a transportable microreactor that supplies reliable power in remote or austere environments, raised $96 million of venture funding through a combination of debt and equity.
- Atym, an edge orchestration technology that leverages device containerization to increase safety, security, and IP protection, raised $350,000 of venture funding.
- Lonestar, lunar-based data storage systems that support off-Earth archival and computing purposes, raised $6.64 million of venture funding.
- Popcorn, a next-gen telecommunications platform that enables global connectivity without roaming fees, raised $5.03 million of venture funding.
- Quindar, a comprehensive cloud-based platform that supports satellite tests and operations, raised $18 million of Series A venture funding in a deal led by Washington Harbour.
- Star Catcher, a space technology firm that builds a space-based energy grid, raised venture funding from IPO CLUB.
Accelerator/Incubator
- Phantom Photonics, quantum sensors that operate in extreme use scenarios in space, underwater, and long-distance atmospheric applications, joined Gold Coast Tech Accelerator as part of the Dual-Use and Defense Tech Cohort.
- Blackstar Orbital, an autonomous space technology that enables rapid deployment and earth observation, joined Seraphim Space as a part of Investor Readiness Program Inaugural Cohort.
- Eta Space, cryogenic fluid management technology that advances a greener earth and more sustainable space, joined Seraphim Space as a part of its Space Florida program.
Angel (individual)
- Ivo, propulsion systems that transform space travel and power transmission through sustainable and efficient propulsion, raised $750,000 of angel funding in the form of convertible debt.
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John Silvestri
Managing Director
Finance, strategy and capital markets executive. Originated structured and executed, as principal, agent and underwriter, over $4 billion of public and private, structured and project finance transactions. Industry expertise includes Energy and Power, Technology/Fintech/Digital, Sponsor, Transportation and Infrastructure, Consumer, Industrials and Agriculture, Banking, and Specialty Finance. Companies ranging from small to large, leveraged, high grade, venture, SPV’s and project finance. Transaction expertise across capital structure includes public and private bonds, equity, structured and direct investments, and unitranche. Leveraged finance includes senior/sub, bridge, acquisition, mezzanine, equity co-investment, and re-capitalizations. Previously, founder of an advisory and a direct investment business, Managing Director and Co-head of Investment Banking at Altamar Capital, and Director and Head of High Yield Capital Markets in New York for Barclays Capital. BS in Management from SUNY Buffalo. MBA from Fordham Gabelli Business School. FINRA Series 7 and 63 licenses.
- Email: jsilvestri@castleplacement.com
- (C) (203) 803-9861
 John SilvestriManaging Director |
Please contact me if you have any questions or would like to discuss your capital raise:
Email: jsilvestri@castleplacement.com
(C) (203) 803-9861
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Sources: Information on this page was derived from a variety of sources including Bloomberg, Company Websites, Crunchbase, PitchBook and other news outlets. Castle Placement® does not warrant or guarantee this information, nor makes any representations as to the accuracy of the information. For more Risks, see CPGO Risks and Disclaimers.
