# M13: portfolio, investments and team

> M13 is a vc firm based in United States. 107 investments on record, 16 in the last 12 months, latest Sept 2026. Portfolio, stages, co-investors and team.

Source: https://millionrounds.com/fund/m13 (Millionrounds; every figure on the page links to its filing or article)

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

# M13

Last cheque observed Sep 2026; 107 cheques on record.

Email

Deploying now VC firm

Pre-seed Seed Series A Sector-agnostic Agnostic Industry Agnostic

Follow M13 and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Fm13)

Deploying now

**67%** of best year **16** **cheques in 12 months**, 107 on record

Since the last cheque **39** days **00** hrs **00** min **00** sec

Median round **$9.4M** Rounds led **10 of 107** Sole investor **5 rounds** Mostly in **United States, 95%**

Pitch M13

## M13 highlights

- 01 16 cheques in the last 12 months
- 02 Mostly Seed and Series A: 65% of its rounds
- 03 Sole investor in 5 rounds, median $5.8M

## What they do

> We invest early in visionary founders building through structural shifts that create new markets and opportunities. From their own website

- **Type:** VC firm (from a list, unverified)
- **Cheque size:** Not stated
- **Stages:** Pre-seed Seed Series A Series B Growth Pre-IPO
- **Sectors:** Sector-agnostic Agnostic Industry Agnostic
- **Based in:** Santa Monica, United States
- **Cold pitches:** Not accepted

## The record

Every round we can evidence, newest first **107 appearances**

- **2026** 13 rounds
- **Sept** **[Baselayer](https://millionrounds.com/company/baselayer)** Series A · US · Crunchbase News **$35M** *Led*
- **Sept** **[Ayble Health](https://millionrounds.com/company/ayble-health)** Series A · US **$16M** With 3 others
- **Aug** **[Baselayer](https://millionrounds.com/company/baselayer)** Series A · US · AlleyWatch **$20M** With 1 other
- **Jul** **[Rime](https://millionrounds.com/company/rime)** Series A · US · TechCrunch **$24M** *Led*
- **Jun** **[Niural](https://millionrounds.com/company/niural)** Series A · US **$21M** With 2 others
- **May** **[Fold](https://millionrounds.com/company/fold)** Debt · US **$150M** With 4 others
- **May** **[Kindra](https://millionrounds.com/company/kindra)** Venture · US **$2.6M** With 3 others
- **Apr** **[Tamber](https://millionrounds.com/company/tamber)** Seed · US **$5.0M** With 2 others
- **Mar** **[Jimini Health](https://millionrounds.com/company/jimini-health)** Seed · US · Ventureburn **$17M** *Led*
- **Mar** **[OpenFX](https://millionrounds.com/company/openfx)** Series A · Ventureburn **$94M** With 7 others
- **Feb** **[Avantos](https://millionrounds.com/company/avantos)** Series A · US · Ventureburn **$25M** With 6 others
- **Feb** **[Luminos.AI](https://millionrounds.com/company/luminos-ai)** Venture · US **$7.8M** With 3 others
- **Jan** **[Bunch AI](https://millionrounds.com/company/bunch-ai)** Crowdfunding · US **$84K** With 2 others
- **2025** 21 rounds
- **Dec** **[Vambe](https://millionrounds.com/company/vambe)** Series A · LatamList **$14M** With 9 others
- **Nov** **[Teleskope](https://millionrounds.com/company/teleskope)** Series A · US · AlleyWatch **$25M** *Led*
- **Nov** **[io.net](https://millionrounds.com/company/io-net)** Series A · US **$400K** With 4 others
- **Oct** **[Estuary](https://millionrounds.com/company/estuary)** Series A · US · AlleyWatch **$17M** *Led*
- **Oct** **[Daylight](https://millionrounds.com/company/daylight)** US · Ventureburn **$75M** With 6 others
- **Oct** **[Daylight](https://millionrounds.com/company/daylight)** Debt · US **$60M** With 4 others
- **Sept** **[Anything](https://millionrounds.com/company/anything)** Seed · US · TechCrunch **$11M** With 4 others
- **Aug** **[Makora](https://millionrounds.com/company/makora)** Seed **$8.5M** With 3 others
- **Aug** **[Kontext](https://millionrounds.com/company/kontext)** Seed · US **$10M** With 2 others
- **Aug** **[Mako](https://millionrounds.com/company/mako)** Seed · US **$8.5M** With 3 others
- **Jul** **[Tecovas](https://millionrounds.com/company/tecovas)** Venture · US **$10M** With 2 others
- **Jun** **[Polimorphic](https://millionrounds.com/company/polimorphic)** Series A · US **$19M** With 6 others
- **Jun** **[Sitch](https://millionrounds.com/company/sitch)** Seed · US **$5.0M** With 2 others
- **Jun** **[Hivemapper](https://millionrounds.com/company/hivemapper)** Venture · US **Undisclosed** With 5 others
- **Jun** **[Maven AGI](https://millionrounds.com/company/maven-agi)** Series B · US **$50M** With 3 others
- **Jun** **[Niural](https://millionrounds.com/company/niural)** Series A · US **$31M** With 2 others
- **Apr** **[Robyn](https://millionrounds.com/company/robyn)** Seed · US **$5.5M** Sole investor
- **Apr** **[Replenysh](https://millionrounds.com/company/replenysh)** Series A · US **$8.0M** With 3 others
- **Mar** **[Chord](https://millionrounds.com/company/chord)** US · AlleyWatch **$5.5M** *Led*
- **Mar** **[AvatarOS](https://millionrounds.com/company/avataros)** Seed · US · TechCrunch **$7.0M** *Led*
- **Feb** **[Milo](https://millionrounds.com/company/milo)** Debt · US **$65M** With 2 others
- **2024** 17 rounds
- **Dec** **[Vambe](https://millionrounds.com/company/vambe)** CL · LatamList **$3.9M** With 2 others
- **Dec** **[CAT Labs](https://millionrounds.com/company/cat-labs)** Seed · US **$5.4M** With 4 others
- **Dec** **[Briefcase](https://millionrounds.com/company/briefcase)** Seed · GB **$3.0M** With 4 others
- **Oct** **[Prepared](https://millionrounds.com/company/prepared)** Series B · US · AlleyWatch **$27M** With 3 others
- **Oct** **[Avantos](https://millionrounds.com/company/avantos)** Seed · US **$9.2M** With 1 other
- **Oct** **[RadiantGraph](https://millionrounds.com/company/radiantgraph)** Seed · US **$3.0M** With 3 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 **3 named**

CM **Carter Milliken Reum** Managing Director i Form ADV

CR **Courtney Reum** Managing Director i Form ADV

KA **Karl Alomar** Managing Director i Form ADV

We also hold **33** 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

**$2.7B** gross assets of its funds, 2 advisers combined Oct 2026

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

- **Legal name:** M13 Holdings Company, LLC
- **SEC number:** CRD 305020

## What they claim to have backed

From their own portfolio page (on their website)

**0** of 2 we have independently watched raise

Claude Papertiger

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.

## The cheque

Pre-seed Seed Series A

Median round joined **$9.4M** the round, not its cheque Alone, median **$5.8M**

Led 10 of 107 rounds **9%**

- **Sole investor:** 5 rounds
- **Last cheque:** Sept 2026

Rounds by stage said on their site

- Seed said *39*
- Series A said *27*
- Venture *22*
- Series B said *7*
- Debt *5*
- Pre-seed said *2*
- Growth said *-*

Cheques by month Led Joined

Nov 2023 Oct 2026

Often in the room with

- [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) 5
- [Flybridge](https://millionrounds.com/fund/flybridge) 5
- [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) 4
- [FJ Labs](https://millionrounds.com/fund/fj-labs) 4
- [Founder Collective](https://millionrounds.com/fund/founder-collective) 4
- [Gaingels](https://millionrounds.com/fund/gaingels) 4

**Pitching M13?** 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 M13. A count of rooms they were both in, not a relationship either has claimed.

[**Alumni Ventures** VC firm **5** rounds together](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund)[**Flybridge** VC firm **5** rounds together](https://millionrounds.com/fund/flybridge)[**Andreessen Horowitz** VC firm **4** rounds together](https://millionrounds.com/fund/andreessen-horowitz)[**FJ Labs** VC firm **4** rounds together](https://millionrounds.com/fund/fj-labs)[**Founder Collective** VC firm **4** rounds together](https://millionrounds.com/fund/founder-collective)[**Gaingels** Private equity **4** rounds together](https://millionrounds.com/fund/gaingels)[**Lerer Hippeau** VC firm **4** rounds together](https://millionrounds.com/fund/lerer-hippeau)[**Y Combinator** Accelerator **4** rounds together](https://millionrounds.com/fund/y-combinator)[**6th Man Ventures** VC firm **3** rounds together](https://millionrounds.com/fund/6mv)[**Bessemer Venture Partners** VC firm **3** rounds together](https://millionrounds.com/fund/bessemer-venture-partners)[**Blue Collective** VC firm **3** rounds together](https://millionrounds.com/fund/blue-collective)[**Craft Ventures** VC firm **3** rounds together](https://millionrounds.com/fund/craft-ventures)

## Recently backed

The latest companies M13 put money into.

[**Baselayer** $35M · Sept 2026](https://millionrounds.com/company/baselayer)[**Ayble Health** $16M · Sept 2026](https://millionrounds.com/company/ayble-health)[**Fold** $150M · May 2026](https://millionrounds.com/company/fold)[**Kindra** $2.6M · May 2026](https://millionrounds.com/company/kindra)[**Jimini Health** $17M · Mar 2026](https://millionrounds.com/company/jimini-health)[**OpenFX** $94M · Mar 2026](https://millionrounds.com/company/openfx)

## Quick answers about M13

### What does M13 invest in?

M13 invests most often at Seed and Series A (65% of the rounds on record), in sectors such as Sector-agnostic, Agnostic and Industry Agnostic.

### How active is M13?

107 investments on record, 16 of them in the last 12 months, and it led 10. The most recent was in Sept 2026.

### What has M13 invested in recently?

Its most recent investments on record: Baselayer (Series A, Sept 2026), Ayble Health (Series A, Sept 2026) and Rime (Series A, Jul 2026).

### How big are M13's cheques?

The median round it joins is $9.4M.

### Does M13 lead rounds?

Sometimes: it led 10 of its 107 investments on record (9%).

### Where does M13 invest?

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

### Is M13 investing now?

Yes: it is actively investing, with 16 investments in the last 12 months.

### Who does M13 invest alongside?

Most often Alumni Ventures (5 rounds together), Flybridge (5 rounds together) and Andreessen Horowitz (4 rounds together).

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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=m13) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=m13)