· Updated · Venture Capital Tracker · investment-strategies · 1 min read
Cantos Backs Heaviside Industries $28M Series A in Defense Tech
Cantos backed Heaviside Industries’ $28M Series A (May 2026). That round is historical: the live mark is $600M after a $60M Series B on August 12, 2026.
Superseded for the live mark. This page is the May 2026 $28 million Series A recap. On August 12, 2026 Heaviside raised $60 million Series B at $600 million. Current diligence memo: Heaviside $600M after $60M Series B.
Cantos backed Heaviside Industries’ $28M Series A in May 2026, funding a defense manufacturing and energetics company — extending the firm’s deep-tech and defense track record. The Series B PR does not restate who led Series A; Tech Funding News later attributed that lead to Interlagos. Treat Cantos here as a named backer, not a confirmed A lead.
Key facts
- Investor: Cantos
- Company: Heaviside Industries (defense manufacturing / energetics)
- Round: $28M Series A
- Date: May 2026
- Co-investors: Menlo Ventures, Anorak Ventures, Flume Ventures, and others
- Related defense bets: Neros (pre-seed lead), Castelion (Series A)
Why this matters
Heaviside is a marquee entry for Cantos’ fresh $70M Fund IV, reinforcing its conviction in American hard-tech and defense manufacturing.
Sources
- Cantos / Heaviside Industries Series A (CB Insights): https://www.cbinsights.com/investor/cantos-ventures
- Cantos Fund IV & defense portfolio (Tectonic Defense): https://www.tectonicdefense.com/first-look-cantos-raises-70m-fund-iv/
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