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Startup · United States

Muon Space

HQ United States

Design, build, and operate mission-optimized satellite constellations with Muon Space.

Website

Funding5 rounds · $431M

Disclosed
$431M
Latest
$250MSeries C · Aug 20, 2026
Cumulative raised$431M
Oct 6, 2021Aug 20, 2026

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

  • SBIR Phase III OTA for three prototype weather/EO-IR satellites
    Oct 8, 2025 · SBIR Phase III
    Confirmed
    Up to $44.6M
    Ceiling

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

  1. 1
    CompanyMuon Space

    Muon Space · Supports Organization · description, Organization · name, Organization · website

    “Design, build, and operate mission-optimized satellite constellations with Muon Space.”
  2. 2

    Sixth-Domain · Supports Organization · country, Organization · kind

    “{"country": "USA", "hq_iso2": "US", "id": "4a14a83c-2aab-439e-a60e-5ef66443afd7"}”

Funding7

  1. 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.”
  2. 4

    Reuters · Aug 20, 2026 · Supports Funding round · post money valuation usd

    “The company was valued at $1.5 billion in the round”
  3. 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”
  4. 6

    Via Satellite · Aug 5, 2024 · Supports Funding round · amount

    “raised a $56.7 million Series B funding round, led by Activate Capital”
  5. 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”
  6. 8

    Aviation Week · Oct 7, 2021 · Supports Funding round

    “said Oct. 6 it raised $10 million in seed-round funding led by Costanoa Ventures”
  7. 9

    SpaceNews · Oct 6, 2021 · Supports Funding round · amount

    “has raised $10 million in Seed funding led by Costanoa Ventures”

Government1

  1. 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.