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.
Average disclosed round size is $25.3M (across 47 rounds with reported amounts).
Portfolio
36
Fund Size
$50M
Top Stage
Seed
Last 12 Mo
5
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
51 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| HHeaviside Industries | Series B | $60M | Aug 2026 |
| HHeaviside Industries | Series A | $28M | May 2026 |
 Heaviside | Series B | $60M | Jan 2026 |
 Faeth Therapeutics | Unknown | $25M | Oct 2025 |
 Adaptyx Biosciences | Seed | $14M | Oct 2025 |
| AAdaptyx | Seed | $14M | Oct 2025 |
 Moldco | Seed | $8M | Sep 2025 |
 Castelion | Series B | $350M | Jul 2025 |
 Remedy | 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 |
 Atomos | Series A | $16.2M | Jan 2023 |
| Faeth Therapeutics | Series A | $47M | Jun 2022 |
 Venus Aerospace | Series A | $20M | Apr 2022 |
| Faeth Therapeutics | Seed | $20M | Jan 2022 |
| Atomos | Unknown | $5M | Jan 2022 |
| Atomos Space | Unknown | $5M | Jan 2022 |
 Tiamat Sciences | Series A | $3M | Jan 2022 |
 Tiamat | Series A | — | Jan 2022 |
 Nabla Bio | Seed | $11M | Dec 2021 |
 Nabla | Seed | $11M | Dec 2021 |
| Tiamat Sciences | Seed | $3M | Nov 2021 |
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Top Co-Investors
Interlagos8 shared
Khosla Ventures6 shared
Refactor Capital6 shared
True Ventures5 shared
Y Combinator5 shared
S2G Ventures4 shared
Future Fund4 shared
Digitalis Ventures4 shared
Bee Partners4 shared
Social Impact Capital4 shared
Anorak Ventures4 shared
Menlo Ventures4 shared
Koch Disruptive Technologies3 shared
Sequoia Capital3 shared
B Capital3 shared
Unshackled Ventures3 shared
Fifty Years3 shared
Techstars3 shared
General Catalyst3 shared
AgFunder2 shared
Last updated: 20 October 2026