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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
How much has Steelhead Composites raised?
$45.8Macross 11 recorded rounds · Jun 2022 – Jun 2026

Most recently, Steelhead Composites raised $750K in its Debt (Jun 2026).

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Steelhead Composites round by round

11 rounds
Jun 2026Debt$750KSEC filing▮
1 investors participated
Oct 2025Seed Round$1.9MSEC filing▮
36 investors participated
Aug 2024Early Stage VC$15.0MSEC filing▮
1 investors participated
Jun 2023Seed Round$1.9MSEC filing▮
32 investors participated
Oct 2022Seed Round$1.9MSEC filing▮
51 investors participated
Jun 2022Seed Round$5.0MSEC filing▮
54 investors participated
+ 5 earlier rounds · a free account shows the full history

How much has Steelhead Composites raised?

Steelhead Composites has raised $45.8 million across 11 recorded rounds since 2012. The largest was a $750,000 debt round in Jun 2026.

Steelhead Composites has filed 11 Form Ds with the SEC since 2012, most recently in Aug 2024 ($15 million sold to 1 investor).

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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Frequently asked about Steelhead Composites

How much has Steelhead Composites raised?
Steelhead Composites has raised $45.8M in total across 11 recorded funding rounds.
When was Steelhead Composites's last funding round?
Steelhead Composites's most recent recorded round was Debt in Jun 2026, raising $750K.