Fundraising FoxPositron Ventures — 2026 Investments
3 investments dated 2026 · listed companies and verified rows first · show all
43 is an early-stage venture firm that invests up to $500k in founders and provides hands-on fundraising guidance, investor introductions, a 1:1 partner relationship, and access to a founder co-working space.
Sector Agnostic
Dustin Dolginow(Co-founder & Partner)in
Co-investorsAtacama VenturesHV CapitalNew Enterprise Associates (NEA)WestBridge Capital
CollimateHealth develops a clinically scalable microbeam radiation technology for cancer treatment, delivering arrays of narrow, micrometer-scale radiation beams at higher doses than conventional broad-beam radiation oncology.
BiotechHealthtechMedical Devices
Stefan Bartzsch(Co-founder & Chief Scientific Officer)inJohanna Winter(Co-founder & Chief Technology Officer)inHans Maria Heÿn(Co-founder & Chief Executive Officer)in
Co-investorsxista science venturesCaesar VenturesHTGF
Ore Energy develops long-duration iron-air battery technology for renewable energy storage using cost-effective, recyclable materials like iron, water, and air.
CleantechClimate TechDeep TechEnergy
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.