Steelhead Composites

Golden, CO · Founded 2012 · Privately Held (backing)

Manufacturer of composite overwrapped pressure vessels intended to provide lightweight, high-pressure storage for propulsion, life support, and energy systems in demanding environments. Steelhead Composites is based in Golden, CO and was founded in 2012. It was valued at $10 million at its later-stage round in Nov 2025, the last priced event on record. It has raised $45.8 million across 11 recorded rounds; the latest was a $750,000 debt round in Jun 2026.

PMV mark · valuation
$10.0M
Oct 2026
Priced at
its later-stage round
Nov 2025
Total raised
$45.8M
Last round
Debt
Jun 2026

Who backs Steelhead Composites?

24 investors
InvestorType
Keiretsu ForumOther
E8 (Seattle)Angel
Denver VenturesVenture capital
Lateral Capital ManagementVenture capital
Tamarack GlobalVenture capital
Milkbox PartnersVenture capital
Rockies Venture ClubVenture capital
Gulf South Angels—
Lorentzen InvestmentsFamily office
3D Ventures—
+ 14 more investors · a free account shows the complete list
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Steelhead Composites investors

24 investors are on record for Steelhead Composites, including Keiretsu Forum, E8 (Seattle), Denver Ventures and Lateral Capital Management. By type, the record holds 5 venture capital firms, 1 family office and 1 angel investor. The debt round in Jun 2026 drew 1 investor.

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