# First In: portfolio, investments and team

> First In is a vc firm based in United States. 5 investments on record, 4 in the last 12 months, latest Oct 2026. Portfolio, stages, co-investors and team.

Source: https://millionrounds.com/fund/first-in (Millionrounds; every figure on the page links to its filing or article)

United States · [Investor](https://millionrounds.com/investors)

# First In

Last cheque observed Oct 2026; 5 cheques on record.

Email

Deploying now New fund $17M, Sept 2026 VC firm

Seed Series A Series B Smart Clothes IoT Defensetech

Follow First In and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Ffirst-in)

Deploying now

**100%** of best year **4** **cheques in 12 months**, 5 on record

Since the last cheque **24** days **00** hrs **00** min **00** sec

Median round **$30M** Rounds led **2 of 5** Mostly in **United States, 100%**

Pitch First In

## First In highlights

- 01 4 cheques in the last 12 months
- 02 Mostly Seed and Series B: 80% of its rounds
- 03 Led 2 rounds

## What they do

> we are SECURITY TECHNOLOGY investors From their own website

- **Type:** VC firm (from a list, unverified)
- **Cheque size:** Not stated
- **Stages:** Seed Series A Series B
- **Sectors:** Smart Clothes IoT Defensetech
- **Based in:** Washington DC, United States
- **Cold pitches:** Not stated

## The record

Every round we can evidence, newest first **5 appearances**

- **2026** 4 rounds
- **Oct** **[Fortastra](https://millionrounds.com/company/fortastra)** Series A · US · Ventureburn **$30M** *Led*
- **Aug** **[Smack Technologies](https://millionrounds.com/company/smack-technologies)** Series B · US · Ventureburn **$61M** With 6 others
- **Apr** **[Cloneable](https://millionrounds.com/company/cloneable)** Seed · US · Crunchbase News **$4.6M** With 4 others
- **Apr** **[Rilian](https://millionrounds.com/company/rilian)** Seed · US · TechStartups **$18M** *Led*
- **2025** 1 round
- **Jul** **[Castelion](https://millionrounds.com/company/castelion)** Series B · US · TechCrunch **$350M** With 11 others

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

## The team

Named by the firm itself, on a filing, its Form ADV or its company registration **4 named**

AK **Arthur Karell** ISSUER'S MANAGING MEMBER. i Filing they signed

FR **Forbes Reynolds McPherson** ISSUER'S MANAGING MEMBER. i Filing they signed

JN **Jeremy Neilson** Managing Director of the Issuer's Manager i Filing they signed

RT **Richard Thoms** Officer of the Issuer's Manager i Filing they signed

We also hold **4** people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

## What the register says

From the firm's own filings with the SEC, which it must file accurately by law

**$851M** gross assets of its funds Oct 2026

**5+** funds on file numbered funds in its name

**Exempt** reporting adviser venture or small private funds

- **Legal name:** First IN Ventures Management, Inc.
- **SEC number:** CRD 341863

## What they claim to have backed

From their own portfolio page (on their website)

**13** of 22 we have independently watched raise

[360privacy](https://millionrounds.com/company/360-privacy)[Anduril](https://millionrounds.com/company/anduril-industries)[Antithesis](https://millionrounds.com/company/antithesis)[Anysignal](https://millionrounds.com/company/anysignal)[Castelion](https://millionrounds.com/company/castelion)[Precog](https://millionrounds.com/company/precog)[Pryzm](https://millionrounds.com/company/pryzm)[Rilian](https://millionrounds.com/company/rilian)[Shift5](https://millionrounds.com/company/shift5)[Smacktechnologies](https://millionrounds.com/company/smack-technologies)[Tidalcyber](https://millionrounds.com/company/tidal-cyber)[Vanguarddefense](https://millionrounds.com/company/vanguard-defense)[Zerotier](https://millionrounds.com/company/zerotier) Acquired Cavhq Hoplynk Mothandflamevr Openpolicy Pixmsecurity Scatrcorp Twosense Volundmfg

Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.

New fund on file

**$17M**

raised in Sept 2026

From its SEC filing, not a journalist: a firm that has just raised has money to deploy.

## The cheque

Seed Series A Series B

Median round joined **$30M** the round, not its cheque

Led 2 of 5 rounds **40%**

- **Sole investor:** Never alone
- **Last cheque:** Oct 2026

Rounds by stage said on their site

- Seed said *2*
- Series B said *2*
- Series A said *1*

Cheques by month Led Joined

Dec 2023 Nov 2026

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## Recently backed

The latest companies First In put money into.

[**Fortastra** $30M · Oct 2026](https://millionrounds.com/company/fortastra)[**Castelion** $350M · Jul 2025](https://millionrounds.com/company/castelion)

## Mentioned on podcasts

Episodes that name First In in their description, not their title.

- [The Full Ratchet](https://millionrounds.com/podcasts/full-ratchet) 31 Aug 2026 · 44 min 516. AI Cost Structures and Pricing, Proprietary Data Sets That Create Moats, and a Clear Method for Determining Which Problem to Solve First (Vivek Vaidya) With [Vivek Vaidya](https://millionrounds.com/person/vivek-vaidya) Mentions [First In](https://millionrounds.com/fund/first-in) Apple PodcastsShow page
- [VC10X](https://millionrounds.com/podcasts/vc10x) 11 May 2023 · 37 min VC10X - Investing in Emerging Markets - Anuj Mehta, India Investment Lead, Rise Capital With [Anuj Mehta](https://millionrounds.com/person/anuj-mehta) Mentions [Rise Capital](https://millionrounds.com/fund/rise-capital)[Entrepreneur First](https://millionrounds.com/fund/entrepreneurs-first)[First In](https://millionrounds.com/fund/first-in) *+1* Apple PodcastsShow page
- [The Full Ratchet](https://millionrounds.com/podcasts/full-ratchet) 13 Jan 2022 · 27 min 315. 2022 Predictions P2: Web 3.0 Dorsey vs. Andreesen, Crypto's Killer App, Omicron's Staying Power, Which FAANG Co. Loses to Anti-Trust First (Ramy Adeeb) With [Ramy Adeeb](https://millionrounds.com/person/ramy-adeeb) Mentions [First In](https://millionrounds.com/fund/first-in) Apple PodcastsShow page

## Quick answers about First In

### What does First In invest in?

First In invests most often at Seed and Series B (80% of the rounds on record), in sectors such as Smart Clothes, IoT and Defensetech.

### How active is First In?

5 investments on record, 4 of them in the last 12 months, and it led 2. The most recent was in Oct 2026.

### What has First In invested in recently?

Its most recent investments on record: Fortastra (Series A, Oct 2026), Smack Technologies (Series B, Aug 2026) and Cloneable (Seed, Apr 2026).

### How big are First In's cheques?

The median round it joins is $30M.

### Does First In lead rounds?

Yes: it led 2 of its 5 investments on record (40%).

### Where does First In invest?

Most of the companies it backs are in the United States (100%).

### Is First In investing now?

Yes: it is actively investing, with 4 investments in the last 12 months.

### What kind of investor is First In?

First In is a VC firm based in Washington DC, United States.

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