# Unless: portfolio, investments and team

> Unless is a vc firm based in United States. 2 investments on record, 2 in the last 12 months, latest May 2026. Portfolio, stages, co-investors and team.

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

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

# Unless

Last cheque observed May 2026; 2 cheques on record.

Email

Deploying now New fund $1.6M, Jun 2026 VC firm

Series A Series B Grid Gas Battery

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Deploying now

**100%** of best year **2** **cheques in 12 months**, 2 on record

Since the last cheque **180** days **00** hrs **00** min **00** sec

Median round **$185M** Rounds led **1 of 2**

Pitch Unless

## Unless highlights

- 01 2 cheques in the last 12 months
- 02 Mostly Growth and Series B: 100% of its rounds
- 03 Led 1 rounds

## What they do

> We're an investment firm on a mission to back visionary companies transforming industrial systems. From their own website

- **Type:** VC firm (from a list, unverified)
- **Cheque size:** Not stated
- **Stages:** Series A Series B
- **Sectors:** Grid Gas Battery
- **Based in:** Boulder, United States
- **Cold pitches:** Not stated

## The record

Every round we can evidence, newest first **2 appearances**

- **2026** 2 rounds
- **May** **[Panthalassa](https://millionrounds.com/company/panthalassa)** Growth · US · TechStartups **$140M** With 26 others
- **Feb** **[Positron](https://millionrounds.com/company/positron)** Series B · US · TechCrunch **$230M** *Led*

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**

AD **Aaron David Marsh** Chief Financial Officer i Form ADV

DM **David Mindell** Lead for Collective of Experts i Form ADV

PJ **Patricia Jane Rogers** General Counsel and Chief Compliance Officer i Form ADV

TZ **Trevor Zimmerman** Executive Officer, Director, Promoter 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

**$253M** assets it manages Oct 2026

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

**Registered** investment adviser full reporting to the SEC

- **Legal name:** Unless Management LP
- **SEC number:** CRD 318549

## What they claim to have backed

From their own portfolio page (on their website)

**8** of 10 we have independently watched raise

[Aether Moving industrial](https://millionrounds.com/company/aether-bio)[Afference Unlocking artificial](https://millionrounds.com/company/afference)[Alloy Advanced manufacturing](https://millionrounds.com/company/alloy-enterprises)[Panthalassa Renewably generating](https://millionrounds.com/company/panthalassa)[Positron Purpose Built](https://millionrounds.com/company/positron-ai)[Sustainment](https://millionrounds.com/company/sustainment)[Vecna Robotics Intelligent](https://millionrounds.com/company/vecna-robotics)[Xwing Supplying autonomy](https://millionrounds.com/company/xwing) Enosemi Ushering in Villa Building housing

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

**$1.6M**

raised in Jun 2026

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

## The cheque

Series A Series B

Median round joined **$185M** the round, not its cheque

Led 1 of 2 rounds **50%**

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

Rounds by stage said on their site

- Growth *1*
- Series B said *1*
- Series A said *-*

Cheques by month Led Joined

Dec 2023 Nov 2026

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## Recently backed

The latest companies Unless put money into.

[**Panthalassa** $140M · May 2026](https://millionrounds.com/company/panthalassa)[**Positron** $230M · Feb 2026](https://millionrounds.com/company/positron)

## Quick answers about Unless

### What does Unless invest in?

Unless invests most often at Growth and Series B (100% of the rounds on record), in sectors such as Grid, Gas and Battery.

### How active is Unless?

2 investments on record, 2 of them in the last 12 months, and it led 1. The most recent was in May 2026.

### What has Unless invested in recently?

Its most recent investments on record: Panthalassa (Growth, May 2026) and Positron (Series B, Feb 2026).

### How big are Unless's cheques?

The median round it joins is $185M.

### Is Unless investing now?

Yes: it is actively investing, with 2 investments in the last 12 months.

### What kind of investor is Unless?

Unless is a VC firm based in Boulder, United States.

### How much does Unless manage?

About $253M, as regulatory assets under management (Oct 2026).

### Has Unless raised a new fund?

Its latest fund filing with the SEC was in Jun 2026, reporting $1.6M raised.

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Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=unless) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=unless)
