M13 is an early-stage venture capital firm that invests in visionary founders building disruptive software businesses. Founded in 2016 by brothers Carter and Courtney Reum, the firm uses a full-time operating partner model to support portfolio companies. M13's latest $400 million Fund III targets seed through Series B investments across work, commerce, health, and money.
Deal activity decreased year-over-year (6 deals in the last 12 months vs 9 prior). Their most common stage is series-a (42% of deals). Average disclosed round size is $17.9M (across 90 rounds with reported amounts).
Portfolio
83
Fund Size
$400M
Top Stage
Series A
Last 12 Mo
6
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
97 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Doorstead | Series B | $21.5M | Apr 2026 |
 Layla | Unknown | — | Mar 2026 |
 Teleskope | Series A | $25M | Nov 2025 |
 Estuary | Series A | $17M | Oct 2025 |
 Daylight Energy | Series B | — | Oct 2025 |
 Anything AI | Series A | $11M | Sep 2025 |
 Niural | Series A | $31M | Jun 2025 |
 Sitch | Seed | $5M | Jun 2025 |
 MavenAGI | Series B | $50M | Jun 2025 |
| CChord | Seed | $5.5M | Mar 2025 |
 AvatarOS | Seed | $7M | Mar 2025 |
 Polimorphic | Seed | $18.6M | Jan 2025 |
| Polimorphic | Series A | $18.6M | Jan 2025 |
 Anything | Series A | $11M | Jan 2025 |
| KKontext | Seed | $10M | Jan 2025 |
 RadiantGraph | Series A | $11M | Oct 2024 |
 Prepared | Series B | $27M | Sep 2024 |
 Zenlytic | Series A | $9M | Sep 2024 |
 Norm Ai | Seed | $11.1M | Jun 2024 |
| MavenAGI | Series A | $20M | May 2024 |
 Max Retail | Series A | $15M | May 2024 |
 Code | Seed | — | Feb 2024 |
| Norm Ai | Seed | $11.1M | Jan 2024 |
 Upwards | Series B | $21M | Jan 2024 |
| Layla | Unknown | $3.3M | Nov 2023 |
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Top Co-Investors
Gaingels6 shared
Bessemer Venture Partners4 shared
Lux Capital4 shared
Y Combinator4 shared
Upfront Ventures4 shared
Slow Ventures4 shared
MetaProp4 shared
First Round Capital4 shared
Techstars4 shared
Peterson Ventures4 shared
Basis Set Ventures3 shared
Fika Ventures3 shared
Lightspeed Venture Partners3 shared
Torch Capital3 shared
Coatue Management LLC3 shared
Haystack3 shared
E14 Fund3 shared
Defy3 shared
Craft Ventures3 shared
Inspired Capital3 shared
Last updated: 9 September 2026