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BY Capital GmbH Co. KG

Venture capitalActively deploying

Berlin · 2 people tracked

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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.

HQ
Berlin
Founded
2015
Last 12 months
2 investments
Tracked investments
3
Unicorns
1

Team · 2 people

from public directories

What they invest in

from 2 of 3 portfolio companies

Deep Tech ×2AI & Machine Learning ×1Biotech ×1Quantum Computing ×1Semiconductors ×1

HQs:United States×3

Investments · 3 tracked

founders shown can be your intro path

By year:2026 · 22023 · 13 dated

Airtmairtm.comJan 2026SEC filingmedium confidence

Airtm operates a dollar-denominated digital wallet and P2P cross-border payments network built on USDC stablecoins.

Dover, US

Ruben Galindo(Executive Officer, Director)Ruben Galindo Payen(Executive Officer, Director)Josh Kliot(Executive Officer, Director)inAnahita Arora(Executive Officer)Laura Seamon(Executive Officer)

Board seatJason Whitmire· per SEC Form D · $572.7K raise · filed Jan 2026

Co-investorsBlueYard CapitalCircle VenturesCloud Money VenturesCoinbase VenturesIGNIA

Cytosolixcytosolix.cominJun 2023SEC filingmedium confidence

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)in

Board seatJason Whitmire· per SEC Form D · $6.6M raise · filed Jun 2023

Co-investorsBackedBlueYard CapitalConnecticut Innovations

SeeQC Incseeqc.comin𝕏Jan 2026SEC filingmedium confidence

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)inJohn Levy(CEO & Chairman, co-founder)inRaja Bal(CFO)inTim Anglim(Executive Officer)Shu-Jen Han(CTO)inMatt Hutchings(CPO)in

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.

Portfolio news

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Frequently asked questions

Where is BY Capital GmbH Co. KG located?
BY Capital GmbH Co. KG is headquartered in Berlin.

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