Solestial
Techstars '19Tempe, US · Founded 2019 · Delaware corporation · 47 employees on LinkedIn · 6 known investors
Find your way into Solestial
437 people in our graph share verified history with the Solestial team — schools, employers, funds. One of them is your warm intro.
Clara Siegunlockedknows Mikhail Reginevich · together at Techstars (overlapped)
×10knows the team · via Techstars
knows the team · via Arizona State University
Solestial develops and manufactures radiation-hardened silicon solar power modules for satellites and space applications. The company serves commercial and government customers requiring power solutions for large satellite constellations and space infrastructure.
Founders & leadership
Solestial was founded in 2019 by Stan Herasimenka, Mikhail Reginevich, and Andrew Atherton.
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Stan HerasimenkainCTO and Co-Founder
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Mikhail ReginevichinChief Engineer, Tooling and R and Co-FounderChief Engineer leading tooling and R&D at Solestial, Mikhail Reginevich has prior experience in product design, B2B business, and solar energy, with background managing technical sales teams.
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Andrew AthertonCo-founder
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Margo de NarayinPresident and CEOShe previously held leadership roles at Astra, where she served as Vice President of Sales and Mission Management before becoming Senior Vice President and General Manager of Space Products and Services. Earlier in her career she spent several years at Cargill, including as Managing Director of Cargill Aqua Nutrition and as Strategic Marketing and Technology Director.
Board
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Beckett JacksonBoard director
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Mathieu CostesBoard director
Investors · 6
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Funding
SEC filings, press & company announcements$26.2M disclosed across 2 of 3 rounds · 2022–2025
- Undisclosed amountSeries AOct 2025Source ↗
▶$15.1MraisedSep 2024 · 12 investors · OtherRule 506(b)
▶$15.1MraisedSep 2024 · 12 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Beckett JacksonDirector
- Mathieu CostesDirector
- Mikhail ReginevichExecutive Officer
- Stanislau HerasimenkaExecutive Officer, Director, Promoter
- Andrew AthertonExecutive Officer, Director, Promoter
- Offering amount
- $21.9M
- Amount sold
- $15.1M
- First sale
- Sep 2024
- Incorporated
- Corporation, Delaware, 2019
- Federal exemptions
- 06b
▶$11.2MraisedOct 2022 · 32 investors · OtherRule 506(b)
▶$11.2MraisedOct 2022 · 32 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Stanislau HerasimenkaExecutive Officer, Director, Promoter
- Andrew AthertonExecutive Officer, Director
- Mikhail ReginevichExecutive Officer
- Mathieu CostesDirector
- Offering amount
- $11.2M
- Amount sold
- $11.2M
- First sale
- Sep 2022
- Incorporated
- Corporation, Delaware, 2019
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Competitors · 3
by search overlapEnergySage68 shared keywordsEnergySage operates an online marketplace where consumers and businesses can compare and shop for clean energy products such as solar panels, battery backup power, heating and cooling systems, electric vehicles, and smart home technology. The platform also offers clean energy financing and publishes market reports like its Solar & Storage Marketplace Report.
Capella Space49 shared keywordsCapella Space designs, builds, and operates synthetic aperture radar (SAR) satellite constellations that provide all-weather, day-and-night Earth observation imagery at sub-0.25m resolution. It offers an automated end-to-end tasking and data delivery platform serving defense and intelligence, maritime, disaster response, and infrastructure monitoring customers.
Pv Magazine Usa36 shared keywordspv magazine is an independent trade publication and daily news outlet covering the solar photovoltaic and energy storage industries, including technology, markets, and policy. It publishes monthly and quarterly magazines in English and German alongside daily online news channels serving specific regional markets, including the United States.
Companies competing with Solestial for the same Google search keywords, organic and paid, via search-intersection analysis.
Non-dilutive funding · 9 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| NASA | Phase II | 2023 | $850K |
| NASA | Phase I | 2023 | $150K |
| U.S. Air ForceAir Force | Phase I | 2023 | $70.9K |
| NASA | Phase II | 2022 | $749.9K |
| National Science Foundation | Phase II | 2021 | $999.8K |
| NASA | Phase I | 2021 | $125K |
| National Science Foundation | Phase I | 2019 | $224.8K |
| NASA | Phase I | 2019 | $124.7K |
| U.S. Air ForceAir Force | Phase I | 2018 | $150K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
In the news
The Weekly Notable Startup Funding Report: 7/6/26 – AlleyWatchalleywatch.com · Jul 2026Frequently asked questions
- What does Solestial do?
- Solestial develops and manufactures radiation-hardened silicon solar power modules for satellites and space applications. The company serves commercial and government customers requiring power solutions for large satellite constellations and space infrastructure.
- Who founded Solestial?
- Solestial was founded by Stan Herasimenka, Mikhail Reginevich, Andrew Atherton in 2019.
- Who are Solestial's investors?
- Solestial's investors include Boeing HorizonX Ventures, Crosscut Ventures, Global Brain, Industrious Ventures, Techstars, Silent Ventures.
- How much funding has Solestial raised?
- Solestial has disclosed $26.2M raised across 2 of its 3 known rounds.
- Where is Solestial headquartered?
- Solestial is headquartered in Tempe, US.