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 10 prior). Their most common stage is series-a (41% of deals). Average disclosed round size is $16.7M (across 115 rounds with reported amounts).
Portfolio
98
Fund Size
$400M
Top Stage
Series A
Last 12 Mo
6
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
123 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Doorstead | Series B | $21.5M | Apr 2026 |
 Layla | Unknown | — | Mar 2026 |
 Chord | Seed | $7M | Jan 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 |
 Maven AGI | Series B | $50M | Jun 2025 |
 Unblocked | Series A | $20M | May 2025 |
 Unblocked | Series A | $20M | May 2025 |
 Chord | Seed | $5.5M | Mar 2025 |
 AvatarOS | Seed | $7M | Mar 2025 |
 OpenFX | Series A | $94M | Jan 2025 |
 Polimorphic | Seed | $18.6M | Jan 2025 |
| Polimorphic | Series A | $18.6M | Jan 2025 |
 Anything | Series A | $11M | Jan 2025 |
 Kontext | Seed | $10M | Jan 2025 |
| Daylight Energy | Unknown | $75M | Jan 2025 |
| Teleskope | Series A | $25M | Jan 2025 |
| Niural | Unknown | $31M | Jan 2025 |
 RadiantGraph | Series A | $11M | Oct 2024 |
 Prepared | Series B | $27M | Sep 2024 |
 Zenlytic | Series A | $9M | Sep 2024 |
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Top Co-Investors
Gaingels9 shared
Plug and Play Tech Center7 shared
First Round Capital7 shared
Techstars7 shared
SV Angel6 shared
Slow Ventures5 shared
Tiger Global Management, LLC5 shared
Y Combinator5 shared
Upfront Ventures5 shared
Inspired Capital5 shared
Interplay Ventures5 shared
BAM Ventures5 shared
FJ Labs4 shared
Lightspeed Venture Partners4 shared
Torch Capital4 shared
Bessemer Venture Partners4 shared
E14 Fund4 shared
Lux Capital4 shared
Craft Ventures4 shared
TTV Capital4 shared
Last updated: 7 October 2026