Lemnos is an early-stage deeptech venture firm based in San Francisco that invests in pre-seed and seed startups focused on hardware, robotics, and aerospace. The firm provides engineering, manufacturing, marketing, and financial capital to help founders turn ideas into successful hardware companies.
Average disclosed round size is $27.7M (across 31 rounds with reported amounts).
Portfolio
24
Fund Size
$50M
Top Stage
Series A
Last 12 Mo
0
Team
ZU
Zorion Ugalde Zarraga
Founder, Managing Partner
EK
Eric Klein
Partner
HZ
Helen Zelman Boniske
Partner
JC
Jeremy Conrad
Partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
32 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Built Robotics | Unknown | $33M | Sep 2026 |
 Pico MES | Series A | $12.3M | Jan 2023 |
 Pico | Series A | $200M | Jan 2022 |
| Pico MES | Seed | $6.8M | Jan 2022 |
| RRhombus Systems | Series A | $10M | Oct 2021 |
 Rhombus | Series A | $10M | Oct 2021 |
 Path Robotics | Series C | $100M | Jul 2021 |
 Scythe | Series A | $13.8M | Jun 2021 |
| RRhombus Systems | Series A | $10M | Jan 2021 |
| Path Robotics | Series B | $56M | Jan 2021 |
 Electriphi | Unknown | $3.5M | Feb 2020 |
| EElectriphi Ai | Unknown | $3.5M | Feb 2020 |
| Electriphi | Seed | $3.5M | Jan 2020 |
| DDishcraft | Unknown | $25M | Jan 2020 |
| Built Robotics | Series B | $33M | Sep 2019 |
 Elroy Air | Seed | $9.2M | Jan 2019 |
| Built Robotics | Series B | $33M | Jan 2019 |
 Spire | Series C | $70M | Jan 2017 |
 Nima | Series A | $9.2M | May 2016 |
 NIMA | Series A | $9.2M | May 2016 |
 Teforia | Series A | $12M | Jan 2016 |
| Spire | Series B | $40M | Jan 2015 |
 Swift Navigation | Seed | $2.6M | Aug 2014 |
| PPantry | Seed | $1.3M | Aug 2014 |
| NNanoSatisfi | Seed | $80M | Jan 2013 |
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Top Co-Investors
Tiger Global Management, LLC5 shared
Baseline Ventures4 shared
Building Ventures4 shared
Presidio Ventures4 shared
N474 shared
Founders Fund4 shared
Felicis3 shared
Stanford's StartX Fund3 shared
RRE Ventures3 shared
First Round Capital3 shared
Congruent Ventures3 shared
Wireframe Ventures3 shared
Blackhorn Ventures3 shared
Urban Innovation Fund3 shared
Upfront Ventures3 shared
Shasta Ventures3 shared
BDT & MSD Partners3 shared
Cota Capital3 shared
Bloomberg Beta2 shared
Bessemer Venture Partners2 shared
Last updated: 7 October 2026