Startup · United States
Muon Space
HQ United States
Design, build, and operate mission-optimized satellite constellations with Muon Space.
Funding5 rounds · $431M
- Disclosed
- $431M
- Latest
- $250MSeries C · Aug 20, 2026
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Aug 20, 2026 | Series C | $250M | $1.50B? | Eclipse Ventures | ACME Capital, Activate Capital, Congruent Ventures, Costanoa Ventures, Google, Radical Ventures, Salesforce Ventures | Reported |
| Jun 12, 2025 | Series B | $89.5M | — | Congruent Ventures | ACME Capital, Activate Capital, Costanoa Ventures, Radical Ventures | Confirmed |
| Aug 5, 2024 | Series B | $56.7M | — | Activate Capital | ACME Capital, Congruent Ventures, Costanoa Ventures, Radical Ventures | Reported |
| Aug 9, 2022 | Series A | $25.0M | — | Radical Ventures | Congruent Ventures, Costanoa Ventures, Space Capital, Ubiquity Ventures | Confirmed |
| Oct 6, 2021 | Seed | $10.0M | — | Costanoa Ventures | Congruent Ventures, Space Capital, Ubiquity Ventures | Reported |
- Series CLed by Eclipse VenturesWith ACME Capital, Activate Capital, Congruent Ventures, Costanoa Ventures, Google, Radical Ventures, Salesforce VenturesValuation $1.50B?$250MAug 20, 2026
- $89.5MJun 12, 2025
- Series BLed by Activate Capital$56.7MAug 5, 2024
- $25.0MAug 9, 2022
- $10.0MOct 6, 2021
Totals add known amounts using recorded USD conversions where available; other currencies are shown separately. A ~ marks an estimated amount.
Government awards & programs1 award · up to $44.6M ceiling
Awards received1
| Announced | Award | Agency | Type | Program | Obligated | Ceiling | Confidence |
|---|---|---|---|---|---|---|---|
| Oct 8, 2025 | SBIR Phase III OTA for three prototype weather/EO-IR satellitespress:muon-space:2025-10-08:sbir-iii-ota | Space Systems Command | SBIR Phase III | — | — | Up to $44.6M | Confirmed |
- SBIR Phase III OTA for three prototype weather/EO-IR satellitesOct 8, 2025 · SBIR Phase IIIConfirmedUp to $44.6MCeiling
Obligated is what has been committed so far; ceiling is the most the award can reach. Joint values cover all recipients and are excluded from this company’s money totals.
Sources10
Profile2
- 1CompanyMuon Space
Muon Space · Supports Organization · description, Organization · name, Organization · website
“Design, build, and operate mission-optimized satellite constellations with Muon Space.”
- 2
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "USA", "hq_iso2": "US", "id": "4a14a83c-2aab-439e-a60e-5ef66443afd7"}”
Funding7
- 3
Muon Space · Aug 20, 2026 · Supports Funding round, Funding round · amount
“today announced the close of a $250 million Series C financing in a heavily oversubscribed round.”
- 4
Reuters · Aug 20, 2026 · Supports Funding round · post money valuation usd
“The company was valued at $1.5 billion in the round”
- 5
PR Newswire · Jun 12, 2025 · Supports Funding round · amount
“today announced the close of its oversubscribed $89.5 million Series B1 round, bringing total Series B funding to $146 million”
- 6
Via Satellite · Aug 5, 2024 · Supports Funding round · amount
“raised a $56.7 million Series B funding round, led by Activate Capital”
- 7
Muon Space (Medium) · Aug 9, 2022 · Supports Funding round · amount
“Radical Ventures led the $25M USD Series A round which included participation from returning investors Costanoa Ventures, Congruent Ventures, Space Capital and Ubiquity Ventures”
- 8
Aviation Week · Oct 7, 2021 · Supports Funding round
“said Oct. 6 it raised $10 million in seed-round funding led by Costanoa Ventures”
- 9
SpaceNews · Oct 6, 2021 · Supports Funding round · amount
“has raised $10 million in Seed funding led by Costanoa Ventures”
Government1
- 10
Muon Space (PR Newswire) · Oct 8, 2025 · Supports Government award
“today announced it has been awarded a $44.6 million Small Business Innovation Research (SBIR) Firm Fixed Price Phase III Other Transaction Authority (OTA) Agreement from the United States Space Force's Space Systems Command System Delta 810 (SYD 810).”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.