BY Capital GmbH Co. KG
Venture capitalActively deployingBerlin
Fund manager profile
BY Capital GmbH Co. KG is a venture fund manager based in Berlin. SEC filings show 4 venture funds on record, most recently BY Capital 2 Select GmbH & Co. KG ($16M offering) filed October 2025.
Source: SEC EDGAR Form D filings. Firm website data not yet available.
What they invest in
from 2 of 3 portfolio companiesDeep Tech ×2AI & Machine Learning ×1Biotech ×1Quantum Computing ×1Semiconductors ×1
HQs:United States×3
Investments · 3 tracked
founders shown can be your intro pathBy year:2026 · 22023 · 13 dated
Dover, US
Board seatJason Whitmire· per SEC Form D · $572.7K raise · filed Jan 2026
Cytosolix uses its Tumor Activated Permeability (TAP) platform to redesign small molecule oncology drugs into weakly-acidic derivatives that exploit tumor acidity to selectively target and accumulate in solid tumors while sparing healthy tissue.
AI & Machine LearningBiotechDeep TechTolland, US
John Deacon(Executive Officer, Director)Colin J. Foster(Executive Officer, Director)
BoardAlex Brunicki(Director)
Board seatJason Whitmire· per SEC Form D · $6.6M raise · filed Jun 2023
Co-investorsBackedBlueYard Capital
SEEQC develops a digital quantum computing platform that integrates the core functions of a quantum computer—including qubits and classical control logic—onto superconducting cryogenic chips, aiming to scale qubits without added complexity.
Deep TechQuantum ComputingSemiconductorsElmsford, US
Oleg Mukhanov(CSO)John Levy(CEO)Raja Bal(CFO)Tim Anglim(Executive Officer)Matthew Hutchings(Executive Officer)Shu-Jen Han(CTO)
Board seatJason Whitmire· per SEC Form D · $25M raise · filed Jan 2026
Co-investorsBlueYard CapitalNordicNinjaEQT VenturesArcTern VenturesBooz Allen VenturesCambium Capital+5 more
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.
Frequently asked questions
- Where is BY Capital GmbH Co. KG located?
- BY Capital GmbH Co. KG is headquartered in Berlin.