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At a Glance

Check Size
$. – $.
Stage
Pre-Seed, Seed, Series A, Series B+
Sectors
Aerospace & Defense, Other, Consumer +2

About Fernbrook Capital Management

Fernbrook Capital Management is a venture capital firm led by William F. Detwiler that invests across a diverse range of sectors including aerospace & defense, consumer, fintech, and climate technologies. The firm maintains a flexible investment approach, participating in funding rounds from pre-seed through Series B+ stages.

Fernbrook's investment strategy appears to focus on identifying growth opportunities across multiple industries and development stages. The firm's broad sectoral coverage suggests a generalist approach to venture investing, seeking to back innovative companies regardless of their specific market vertical, provided they demonstrate strong growth potential and market opportunity.

Sector Focus

Investment Stage

SEC Fund Filings

Vehicles filed, last 24 months
2
Latest filing

Fernbrook Capital Management filed a Form D for 2 fund vehicles between Sep 26, 2024 and Sep 25, 2026.

Fund vehicleSource
Fernbrook Convergence Joy, LPSEC Form D, filed
Fernbrook Convergence BB, LPSEC Form D, filed

A Form D is the notice a fund files with the SEC when it raises money in a private offering. Feeder funds, parallel funds and SPVs each file their own, so the count measures filing activity, not the number of flagship funds.

Source: SEC EDGAR Form D filings for pooled investment funds, original filings only (amendments excluded). Our filing data starts Jul 1, 2024. Vehicles are matched to Fernbrook Capital Management by fund name and checked against the sponsor address and named principals on each filing; offering amounts are not shown. Each “SEC Form D” link opens an EDGAR full-text search for that vehicle’s exact name, where the filing itself is listed. See every new fund filing on the Form D Radar.

Team (2)

Frequently Asked Questions

What stage does Fernbrook Capital Management invest at?

Fernbrook Capital Management primarily invests at the Pre-Seed, Seed, Series A, Series B+ stages. This means they focus on companies that are at the earliest idea or prototype phase.

What sectors does Fernbrook Capital Management focus on?

Fernbrook Capital Management focuses on investments in Aerospace & Defense, Other, Consumer, Fintech, Climate. Their portfolio reflects deep expertise and networks within these sectors.

What is Fernbrook Capital Management's typical check size?

Fernbrook Capital Management's typical investment check size ranges from $. to $.. Actual amounts may vary based on the stage, sector, and specific opportunity.

Fund Operations Resources

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