Climate & EnergyBiotech & Life SciencesDefense & SpaceHardware & SemiconductorsRobotics & AutomationManufacturingInfrastructure & Cloud
Cantos is a pre-seed and seed venture capital firm that backs deeply technical founders building 'near frontier' companies across climate, biotech, aerospace, defense, and advanced manufacturing. The firm provides initial capital and ongoing counsel to founders tackling critical infrastructure and existential challenges.
Their most common stage is seed (41% of deals). Average disclosed round size is $21.3M (across 32 rounds with reported amounts).
Portfolio
28
Fund Size
$50M
Top Stage
Seed
Last 12 Mo
6
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
34 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| HHeaviside Industries | Series B | $60M | Aug 2026 |
| HHeaviside Industries | Series A | $28M | May 2026 |
 Faeth Therapeutics | Unknown | $25M | Oct 2025 |
 Adaptyx Biosciences | Seed | $14M | Oct 2025 |
| AAdaptyx Biosciences | Seed | $14M | Oct 2025 |
 Moldco | Seed | $8M | Sep 2025 |
 Remedy Scientific | Seed | — | Apr 2025 |
 Castelion | Series A | $70M | Jan 2025 |
 Earth AI | Series B | $20M | Jan 2025 |
 Intramotev | Series A | $14.4M | Aug 2024 |
 Shinkei | Seed | $6M | Apr 2024 |
 Atomos Space | Series A | $16.2M | Jan 2023 |
| Faeth Therapeutics | Series A | $47M | Jun 2022 |
 Venus | Series A | $20M | Apr 2022 |
| Faeth Therapeutics | Seed | $20M | Jan 2022 |
 Nabla Bio | Seed | $11M | Dec 2021 |
 Tiamat Sciences | Seed | $3M | Nov 2021 |
 Knowde | Series B | $72M | Aug 2021 |
 Glyphic Biotechnologies | Seed | $6.0M | Jul 2021 |
| Knowde | Series A | $14M | May 2020 |
| Knowde | Series A | $14M | Mar 2020 |
 Salient Motion | Seed | $4M | — |
 Furno | Seed | $6.5M | — |
 Cache Energy | Seed | $8.5M | — |
 Modulo Bio | Unknown | $8M | — |
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Top Co-Investors
Refactor Capital6 shared
Interlagos6 shared
Khosla Ventures5 shared
S2G Ventures4 shared
Future Fund4 shared
Digitalis Ventures4 shared
Bee Partners4 shared
Anorak Ventures4 shared
Menlo Ventures4 shared
Koch Disruptive Technologies3 shared
Sequoia Capital3 shared
Unshackled Ventures3 shared
AgFunder2 shared
True Ventures2 shared
Canvas Prime2 shared
BoxGroup2 shared
Tamarack Global2 shared
Y Combinator2 shared
Alpaca VC2 shared
B Capital2 shared
Last updated: 8 September 2026