SOLESTIAL, INC.

Tempe, AZ · Founded 2019 · Aerospace · Still private

Radiation-hard silicon solar power modules integrated with deployable array system for spacecraft

Claim this profile

Follows are private to you and power your alerts

Updated Oct 23, 2026 · solestial.com

Sector: Aerospace
Headquarters: Tempe, AZ
Founded: 2019
Latest Form D: $15.1M, Sep 2024
Total capital: $30.6M

Federal grants: $4.4M; 9 awards · 2018–2025; Rank in peer group#65 of 155
Private capital raised: $26.2M; 2 Form D · last Sep 2024; 25 months since last filing
Federal contracts: None on recordNo federal contract awards found.
Granted patents: None on recordNo USPTO grants. Applications publish after 18 months.

Capital timeline

Latest events

May 2025Federal grantDefense · Phase II · Multi-orbital And Fast To Manufacture Solar Array Wing For Tactical Response Satellites$1.2M
Dec 2024Federal grantDefense · Phase I · F242-0017-0118 Solestial, Inc. In The Proposed Project Solestial Inc Will Use Its Expertise And Experience In The Design And Fabrication Of Solar Cells, Solar Panels, And Solar Blankets To Develop Cover Glass Replacement Coatings For Flexible Solar.$180K
Sep 2024Private capital raisedForm D · SEC · 2nd filing$15.1M
May 2023Federal grantDefense · Phase I · 10X Better Space Solar Power$71K
Jan 2023Federal grantNASA · Phase I · Next-Generation Silicon Based Solar Arrays for Space Stations and Other Permanent Space Infrastructure$150K
Oct 2022Private capital raisedForm D · SEC · 1st filing$11.2M
Jun 2022Federal grantNASA · Phase II · Pushing Radiation Hardness and Qualification of Ultrathin Silicon Solar Cells$750K

Show 4 earlier federal awards

Aug 2021Federal grantNSF · Phase II · SBIR Phase II:Thin Silicon Solar Cells for Aerospace Applications$1.5M
Aug 2019Federal grantNASA · Phase I · A Path to Low-Cost Space Solar Arrays Based on Si Blankets and In-Orbit Array Construction$125K
Jul 2019Federal grantNSF · Phase I · SBIR Phase I: Thin Silicon Solar Cells for Aerospace Applications$225K
Aug 2018Federal grantDefense · Phase I · High Performance Radiation Hardened Solar Power$150K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Federal first

49months

from SOLESTIAL, INC.’s first federal award to its first private round.

First federal award · Aug 2018: Defense · $150K
First Form D · Oct 2022: $11.2M · 1st Form D
Awards before first raise: 5 awards

An association in public records, not a cause or a prediction.

Standing among 155 peers

Line = median

Aerospace · Device

Federal grants#65 · top 42%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

Researcher links verified by same-company patents and grants

Stanislau HerasimenkaResearcherExecutive Officer, Director, PromoterLinked by $2.1M in grants as PI
Andrew AthertonExecutive Officer, Director, PromoterNamed in SEC Form D filings
Beckett JacksonDirectorNamed in SEC Form D filings
Mathieu CostesDirectorNamed in SEC Form D filings
Mikhail ReginevichExecutive OfficerNamed in SEC Form D filings

What it has protected

No granted patents are on record.

USPTO usually publishes applications 18 months after filing, so recent applications may not be visible yet. Patents assigned under a different entity name won’t match.

Checked: USPTO granted patents and published applications · Oct 23, 2026

Regher Solar LLCShares a founder: Stanislau Herasimenka
Regher Solar, LLCShares a founder: Alex Fedoseyev, DUNS:078816906
ICON AIRCRAFT INCSimilar federal contract value in Aerospace · null in contracts
WALLAROO LABS INCSimilar federal contract value in Aerospace · null in contracts
Thermal Expansion Solutions, Inc.Similar federal contract value in Aerospace · null in contracts
RHEA SPACE ACTIVITY, INC.Similar federal contract value in Aerospace · null in contracts

Regulatory activity · Aerospace

Sector-level, not company-level

06 Jul 2026Nondiscrimination in Federally Assisted Programs of NASA-Effectuation of Title VI of the Civil Rights Act of 1964National Aeronautics and Space Administration
01 Jul 2026Special Conditions: AMAC Aerospace, The Boeing Company Model 747- 8 Airplane; Side-Facing SeatsFederal Aviation Administration
26 Jun 2026Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous AmendmentsFederal Aviation Administration
23 Jun 2026Operating Limitations at John F. Kennedy International AirportFederal Aviation Administration
23 Jun 2026Operating Limitations at New York LaGuardia AirportFederal Aviation Administration
18 Jun 2026Special Conditions: Honeywell Aerospace US LLC, Dassault Aviation Model Falcon 900EX Airplane; Electronic System Security Protection From Unauthorized External AccessFederal Aviation Administration

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.