About First In
First In is a venture capital firm based in Hobe Sound, FL. Since October 2025 it has filed Form D notices for ten funds. The largest, First In Ventures Fund 3 SBIC Critical Technologies LP, reported $51.6M raised from 56 investors.
Funds
First In has ten funds on file with the SEC, which have reported $155.6M raised.
Funds (SEC Form D)
| Fund | First filed | Amount raised | Target | Investors |
|---|---|---|---|---|
| First In Ventures Fund II LPVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $21,762,626 | Not set | 60 |
| First in Scatr 2024 LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $6,626,000 | $6,626,000 | 26 |
| First In Patriot Smack LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $16,817,500 | $16,817,500 | 51 |
| First In Patriot Castelion LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $17,623,678 | $17,623,678 | 42 |
| First In Patriot Antithesis LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $4,315,000 | $4,315,000 | 21 |
| First In Liberty Castelion LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $23,920,004 | $23,920,004 | 61 |
| First in Castelion B 2024 LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $9,080,000 | $9,080,000 | 32 |
| First in Castelion 2024 LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $2,635,000 | $2,635,000 | 19 |
| First in Adlumin 2023 LLCVenture capital fund · 3(c)(1) · Form D ↗ | Sep 17, 2026 | $1,241,500 | $1,241,500 | 12 |
| First In Ventures Fund 3 SBIC Critical Technologies LPOther investment fund · 3(c)(7) · Form D ↗ | Oct 20, 2025 | $51,616,162 | Not set | 56 |
Amounts and investor counts come from each fund's latest Form D or amendment; the dated lines under an amount show what earlier filings reported. "Not set" means the fund did not give a target. Form D does not report returns.
Portfolio Companies
Companies where a First In partner sits on the board, according to the company's own Form D. A board seat usually comes with an investment, but Form D does not list investors.
| Company | Location | First In director | On the board | Latest raise |
|---|---|---|---|---|
| Fortastra Corp | Torrance, CA | Arthur Karell | 2026 | $32.5M ↗Sep 2026 |
| Scatr Corp. | Richmond Heights, OH | Forbes McPherson | 2025–2026 | $6.3M ↗Mar 2026 |
| Vanguard Defense, Inc. | Fullerton, CA | Arthur Karell | 2026 | $6.2M ↗Jan 2026 |
| AnySignal, Inc. | El Segundo, CA | Arthur Karell | 2024–2025 | $10.2M ↗May 2025 |
People
Partners and officers named on First In's fund filings.
Sources
- SECEvery Form D filing behind this page is linked in the tables above.