# Fontinalis Partners: portfolio, investments and team

> Fontinalis Partners is a vc firm based in United States. 65 investments on record, 4 in the last 12 months, latest Jul 2026.

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

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

# Fontinalis Partners

Last cheque observed Jul 2026; 65 cheques on record.

Email

Deploying now New fund $86M, Jul 2026 VC firm

Pre-seed Seed Series A Sustainability Industrial Industry 4.0

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Deploying now

**67%** of best year **4** **cheques in 12 months**, 65 on record

Since the last cheque **123** days **00** hrs **00** min **00** sec

Median round **$10M** Cheque size, as they say **$100K – $5.0M** Rounds led **0 of 65** Sole investor **5 rounds** Exits **3 from the portfolio** Mostly in **United States, 95%**

Pitch Fontinalis Partners

## Fontinalis Partners highlights

- 01 4 cheques in the last 12 months
- 02 Mostly Seed and Series A: 60% of its rounds
- 03 Sole investor in 5 rounds, median $2.5M
- 04 3 exits from the portfolio

## What they do

> Investing in early-stage startups on the new frontiers of mobility, industrial innovation, and energy. From their own website

- **Type:** VC firm (from a list, unverified)
- **Cheque size:** $100K – $5.0M as they say
- **Stages:** Pre-seed Seed Series A Series B
- **Sectors:** Sustainability Industrial Industry 4.0
- **Based in:** Detroit, United States
- **Cold pitches:** Not stated

## The record

Every round we can evidence, newest first **65 appearances**

- **2026** 4 rounds
- **Jul** **[Ouster](https://millionrounds.com/company/ouster)** US **$200M** With 1 other
- **May** **[Helm.ai](https://millionrounds.com/company/helm-ai)** Venture · US **Undisclosed** With 3 others
- **Jan** **[VulcanForms](https://millionrounds.com/company/vulcanforms)** Series D · US · Ventureburn **$220M** With 6 others
- **Jan** **[Sibros](https://millionrounds.com/company/sibros)** Venture · US **$9.0M** With 5 others
- **2025** 3 rounds
- **Sept** **[Elementum](https://millionrounds.com/company/elementum)** Venture · US **Undisclosed** With 2 others
- **Jun** **[zeroRISC](https://millionrounds.com/company/zerorisc)** Seed · US **$10M** With 2 others
- **Mar** **[Mitra Chem](https://millionrounds.com/company/mitra-chem)** Series B · US **$16M** With 3 others
- **2024** 6 rounds
- **Sept** **[Hgen](https://millionrounds.com/company/hgen)** Seed · US **$5.0M** With 3 others
- **Aug** **[Gridwise](https://millionrounds.com/company/gridwise)** Venture · US **Undisclosed** With 5 others
- **Jun** **[Swift Solar](https://millionrounds.com/company/swift-solar)** Series A · US **$27M** With 4 others
- **Apr** **[Condoit](https://millionrounds.com/company/condoit)** Seed · US **$4.3M** With 4 others
- **Mar** **[Fused](https://millionrounds.com/company/fused)** Pre-seed · US **$1.0M** Sole investor
- **Jan** **[HAAS Alert](https://millionrounds.com/company/haas-alert)** Venture · US **Undisclosed** With 3 others
- **2023** 4 rounds
- **Jul** **[Verity](https://millionrounds.com/company/verity)** Series B · US **$11M** With 2 others
- **Jul** **[ChipFlow](https://millionrounds.com/company/chipflow)** Pre-seed · GB **$1.5M** With 4 others
- **Jun** **[Humatics](https://millionrounds.com/company/humatics)** Venture · US **Undisclosed** With 3 others
- **Apr** **[Robust.AI](https://millionrounds.com/company/robust-ai)** Series A · US **$20M** With 4 others
- **2022** 3 rounds
- **Aug** **[AMP](https://millionrounds.com/company/amp)** Series A · SG **$17M** With 1 other
- **Jun** **[Chain.io](https://millionrounds.com/company/chain-io)** Series A · US **$11M** With 3 others
- **May** **[Unfolded](https://millionrounds.com/company/unfolded)** Venture · US **Undisclosed** With 1 other
- **2021** 3 rounds
- **Dec** **[Donut](https://millionrounds.com/company/donut)** Seed · US **$11M** With 7 others
- **Dec** **[Karamba Security](https://millionrounds.com/company/karamba-security)** Series B · US **$10M** With 1 other
- **Nov** **[Coros](https://millionrounds.com/company/coros)** Seed · US **$6.1M** With 3 others
- **2019** 4 rounds
- **Jun** **[Gatik](https://millionrounds.com/company/gatik)** Seed · US · VentureBeat **$4.5M** With 4 others
- **Mar** **[Ouster](https://millionrounds.com/company/ouster)** Debt · US · FinSMEs **$60M** With 5 others
- **Feb** **[Ike](https://millionrounds.com/company/ike)** Series A · US · TechCrunch **$52M** With 4 others
- **Jan** **[Humatics](https://millionrounds.com/company/humatics)** Debt · US · FinSMEs **$28M** With 6 others
- **2018** 3 rounds
- **Dec** **[Wise Systems](https://millionrounds.com/company/wise-systems)** Series A · US · FinSMEs **$7.0M** With 3 others
- **Oct** **[ClimaCell](https://millionrounds.com/company/climacell)** Series B · US · FinSMEs **$45M** With 5 others
- **Jan** **[Cargo](https://millionrounds.com/company/cargo)** Seed · US · FinSMEs **$5.5M** With 6 others
- **2017** 3 rounds
- **Nov** **[Lunar Wireless](https://millionrounds.com/company/lunar-wireless)** US · FinSMEs **$4.1M** With 9 others
- **Jul** **[Cargo](https://millionrounds.com/company/cargo)** Seed · US · TechCrunch **$1.8M** With 3 others
- **Feb** **[GoKid](https://millionrounds.com/company/gokid)** Seed · US · FinSMEs **$1.0M** With 1 other
- **2016** 1 round
- **Sept** **[Karamba Security](https://millionrounds.com/company/karamba-security)** US · FinSMEs **$2.5M** Sole investor
- **2015** 8 rounds
- **Jul** **[Zagster](https://millionrounds.com/company/zagster)** Series A · US **$3.5M** With 3 others
- **Jun** **[Revio](https://millionrounds.com/company/revio)** Seed · US **$120K** With 2 others
- **Jun** **[Classics&Exotics](https://millionrounds.com/company/classics-and-exotics)** Seed **$120K** With 2 others
- **Jun** **[Cosmos Labs](https://millionrounds.com/company/cosmos-labs)** Seed **$120K** With 3 others
- **Jun** **[Elegus Technologies](https://millionrounds.com/company/elegus-technologies)** Seed · US **$170K** With 3 others
- **Jun** **[Splitting Fares (SPLT)](https://millionrounds.com/company/splitting-fares-splt)** Seed · US **$145K** With 2 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 **5 named**

CW **Christopher Welles Cheever** Manager of General Partner i Filing they signed

CT **Christopher Taylor Stallman** Manager of General Partner i Filing they signed

LA **Laura Anne Petterle** Chief Financial Officer, Chief Compliance Officer & Managing Partner i Form ADV

RH **Ralph H. Booth, II** Manager of Fontinalis Partners, LLC i Filing they signed

RH **Ralph Harman Booth** Retired Managing Partner i Form ADV

We also hold **17** 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

**$247M** gross assets of its funds Oct 2026

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

- **Legal name:** Fontinalis Partners, LLC
- **SEC number:** CRD 161242

## What they claim to have backed

From their own portfolio page (on their website)

**22** of 47 we have independently watched raise

[Automated case picking](https://millionrounds.com/company/vecna-robotics)[Autonomous dispatch & routing](https://millionrounds.com/company/wise-systems)[Autonomous flight](https://millionrounds.com/company/skyryse)[B2B autonomous vehicles](https://millionrounds.com/company/gatik)[Chipflow](https://millionrounds.com/company/chipflow)[Digital manufacturing at](https://millionrounds.com/company/vulcanforms)[Enterprise fleet management](https://millionrounds.com/company/telogis)[Freight intelligence](https://millionrounds.com/company/freightwaves)[Full-stack autonomous vehicle](https://millionrounds.com/company/nutonomy)[Highlandfleets](https://millionrounds.com/company/highland-electric-fleets)[ML-enabled custom battery cathodes](https://millionrounds.com/company/mitra-chem)[Machine learning](https://millionrounds.com/company/uber-advanced-technologies-group)[Mobile driving analytics](https://millionrounds.com/company/zendrive)[On-demand delivery](https://millionrounds.com/company/postmates)[Over-the-air (OTA) connected](https://millionrounds.com/company/sibros)[Serverless geospatial data](https://millionrounds.com/company/fused)[Silicon carbide wafers](https://millionrounds.com/company/halo-industries)[Simple and flexible](https://millionrounds.com/company/carputty)[Space & AI](https://millionrounds.com/company/tomorrow-io)[Transportation network ipo](https://millionrounds.com/company/lyft)[Zero-touch warehouse intelligence system](https://millionrounds.com/company/verity)[Zerorisc](https://millionrounds.com/company/zerorisc) Air cargo e-commerce software Clean hydrogen decarbonizing industry E-commerce delivery Energy management systems Enterprise carpooling Flexible microtransit Frontier inference clusters Geospatial data mapping High-efficiency solar technology Infra for the LIDAR perception LP Portal Location-based social app Mobile parking payment Novel flexible circuits Operating system for robotics Peer-to-peer carshare School bus fleet management Semiconductor fab Simulation Software for electricians Supply chain & Supply chain integrations Supply chain management Unsupervised learning

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.

## Exits from the portfolio

Companies it backed that were later bought or listed **3 in all**

**[ParkMe, Inc.](https://millionrounds.com/company/parkme-inc)** Bought by INRIX **Undisclosed** Sept 2015

**[Wheelz](https://millionrounds.com/company/wheelz)** Bought by Turo **Undisclosed** May 2013

**[Everyday Solutions](https://millionrounds.com/company/everyday-solutions)** Bought by Synovia, Inc. **Undisclosed** Sept 2012

An exit counts when it came after the firm's first round in the company. From historical deal records.

New fund on file

**$86M**

raised in Jul 2026

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

## The cheque

Pre-seed Seed Series A

Median round joined **$10M** the round, not its cheque Alone, median **$2.5M**

Led 0 of 65 rounds **0%**

- **Said size:** $100K – $5.0M
- **Sole investor:** 5 rounds
- **Last cheque:** Jul 2026
- **Exits:** 3 from the portfolio

Rounds by stage said on their site

- Seed said *17*
- Series A said *14*
- Venture *12*
- Series B said *7*
- Debt *2*
- Pre-seed said *-*

Cheques by month Led Joined

Dec 2023 Nov 2026

Often in the room with

- [Techstars](https://millionrounds.com/fund/techstars) 12
- [Verizon Ventures](https://millionrounds.com/fund/verizon-ventures) 6
- [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) 4
- [Right Side Capital Management](https://millionrounds.com/fund/right-side-capital-management) 4
- [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) 3
- [Detroit Venture Partners](https://millionrounds.com/fund/detroit-venture-partners) 3

**Pitching Fontinalis Partners?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque.

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## Who they invest alongside

The investors most often in the same rounds as Fontinalis Partners. A count of rooms they were both in, not a relationship either has claimed.

[**Techstars** VC firm **12** rounds together](https://millionrounds.com/fund/techstars)[**Verizon Ventures** Corporate VC **6** rounds together](https://millionrounds.com/fund/verizon-ventures)[**Bessemer Venture Partners** VC firm **4** rounds together](https://millionrounds.com/fund/bessemer-venture-partners)[**Right Side Capital Management** VC firm **4** rounds together](https://millionrounds.com/fund/right-side-capital-management)[**Alumni Ventures** VC firm **3** rounds together](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund)[**Detroit Venture Partners** VC firm **3** rounds together](https://millionrounds.com/fund/detroit-venture-partners)[**Expansion Venture Capital** VC firm **3** rounds together](https://millionrounds.com/fund/expansion-venture-capital)[**LaunchCapital** VC firm **3** rounds together](https://millionrounds.com/fund/launchcapital)[**RockPort Capital** VC firm **3** rounds together](https://millionrounds.com/fund/rockport-capital)[**Sutter Hill Ventures** VC firm **3** rounds together](https://millionrounds.com/fund/sutter-hill-ventures)[**Ted Serbinski** Angel **3** rounds together](https://millionrounds.com/fund/ted-serbinski)[**500 Global** Angel **2** rounds together](https://millionrounds.com/fund/500-startups)

## Recently backed

The latest companies Fontinalis Partners put money into.

[**Ouster** $200M · Jul 2026](https://millionrounds.com/company/ouster)[**Helm.ai** May 2026](https://millionrounds.com/company/helm-ai)[**VulcanForms** $220M · Jan 2026](https://millionrounds.com/company/vulcanforms)[**Sibros** $9.0M · Jan 2026](https://millionrounds.com/company/sibros)[**Elementum** Sept 2025](https://millionrounds.com/company/elementum)[**zeroRISC** $10M · Jun 2025](https://millionrounds.com/company/zerorisc)

## Mentioned on podcasts

Episodes that name Fontinalis Partners in their description, not their title.

- [Inevitable](https://millionrounds.com/podcasts/inevitable) 10 Oct 2024 · 36 min Scaling Hydrogen for Heavy Industry with Hgen Mentions [Fontinalis Partners](https://millionrounds.com/fund/fontinalis-partners)[Founders Fund](https://millionrounds.com/fund/founders-fund)[Seven Seven Six](https://millionrounds.com/fund/seven-seven-six) *+3* Apple PodcastsShow page

## Quick answers about Fontinalis Partners

### What does Fontinalis Partners invest in?

Fontinalis Partners invests most often at Seed and Series A (60% of the rounds on record), in sectors such as Sustainability, Industrial and Industry 4.0.

### How active is Fontinalis Partners?

65 investments on record, 4 of them in the last 12 months. The most recent was in Jul 2026.

### What has Fontinalis Partners invested in recently?

Its most recent investments on record: Ouster (Undisclosed round, Jul 2026), Helm.ai (Venture, May 2026) and VulcanForms (Series D, Jan 2026).

### How big are Fontinalis Partners's cheques?

The median round it joins is $10M. It says it writes cheques of $100K to $5.0M.

### Does Fontinalis Partners lead rounds?

Rarely, if at all: none of its 65 investments on record names it as the lead.

### Where does Fontinalis Partners invest?

Most of the companies it backs are in the United States (95%).

### Is Fontinalis Partners investing now?

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

### Who does Fontinalis Partners invest alongside?

Most often Techstars (12 rounds together), Verizon Ventures (6 rounds together) and Bessemer Venture Partners (4 rounds together).

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