/Investor DB

55 North — Full Portfolio

13 tracked investments · listed companies and verified rows first

Kiutrakiutra.comin𝕏Oct 2025✓ verified

Kiutra develops cryogenic cooling systems for quantum technologies, offering alternatives to helium-3-based solutions through continuous adiabatic demagnetization refrigeration (cADR).

Deep TechHardwareNew MaterialsQuantum ComputingMunich, DE

Dr. Alexander Regnat(CEO & Co-founder)Dr. Tomek Schulz(COO & Co-founder)Jan Spallek(CTO & Co-founder)inProf. Christian Pfleiderer(Scientific Advisor & Co-founder)

Co-investorsAPEX VenturesNovaCapitalVerve VenturesTRUMPF Venture

ChEmpowerchempower-corp.comSeries A · Apr 2025 · $19M

ChemPower develops an abrasive-free chemical mechanical planarization (CMP) technology and materials for advanced semiconductor chip manufacturing.

Advanced ManufacturingCleantechNew MaterialsSemiconductorsBeaverton, US

Sudhanshu Misra(CEO)inSV Babu(CTO)

BoardSCOTT SHAW(Director)inOWEN LOZMAN(Director)JESSICA FREYER(Director)inBABU SURYADEVARA(Director)

Co-investorsFoothill VenturesIntel CapitalM VenturesPangaea Ventures Us Inc.Portland Seed FundRhapsody Venture Partners+3 more

Great Skygreatsky.aiin𝕏Seed · Mar 2026 · $14M

Great Sky develops physics-based computational intelligence and AI systems built from foundational research.

AI & Machine LearningDeep TechHardwareBoulder, US

Jeffrey Shainline(Founder & CEO)inJeffrey Chiles(Co-Founder & CTO)inBryce Primavera(Co-Founder & VP of Architecture)inSaeed Khan(Co-Founder & VP of Fabrication)inMark Wade(Director)in

BoardTom Biegala(Director)in

Co-investorsBison VenturesMatchstick VenturesMythos Ventures Management, LlcOlive Tree CapitalRange VCService Provider Capital+3 more

Groovegroove.oooApr 2026acquired by Clari · Aug 2023

Groove was a San Francisco-based B2B sales engagement platform that helped enterprise sales reps automate outreach, playbooks, and CRM data entry to boost productivity.

Chris Rothstein(Founder)in

Co-investorsCounterview CapitalLevel EquityOverton Venture CapitalQuest Venture PartnersResolute VenturesUncork Capital+4 more

Groove Quantumgroovequantum.com

GROOVE quantum develops spin-qubit systems and integrated quantum processors, focusing on germanium-based quantum computing technology.

Deep TechHardwareQuantum ComputingSemiconductors

Anne-Marije Zwerver(CEO & Co-founder)inNico Hendrickx(CTO & Co-founder)in

Co-investorsInnovation IndustriesVerve Ventures

IQMiqm.techin𝕏

IQM builds full-stack superconducting quantum computers, from NISQ-era to fault-tolerant systems, including quantum processing units, on-premise machines, and a cloud platform.

Deep TechHardwareQuantum ComputingEspoo, FI

Jan Goetz(Founder)in

Co-investorsBayern KapitalChanger ClubFirst MomentumInception FundKreos CapitalOpenOcean+9 more

Lemonsqueezylemonsqueezy.com𝕏

Lemon Squeezy is a payments platform and merchant of record that handles global sales, payment processing, and sales tax compliance for people selling digital products.

Creator EconomyE-commerceFintechSaaS

Co-investorsiThink VC

Monarch Quantummonarchquantum.comin𝕏Mar 2026 · $55M

Monarch Quantum is an integrated photonics company that builds modular, plug-and-play "light engine" subsystems—combining chip-scale lasers, modulators, detectors, fiber optics, and control electronics—for quantum systems integrators.

Advanced ManufacturingDeep TechQuantum ComputingSan Diego, US

Timothy Day(Executive Officer, Director, Promoter)Bryan Taylor(Executive Officer, Promoter)

BoardJeffrey Harper(Director)Chris Galvin(Director)

Co-investorsSerendipity Capital

Quanscientquanscient.cominMay 2026

Quanscient provides a cloud-based multiphysics simulation platform designed for engineers in R&D to accelerate complex engineering simulations with reduced runtimes and improved design exploration across medical devices, consumer electronics, automotive, and space applications.

Advanced ManufacturingAI & Machine LearningCloud ComputingDeep TechQuantum ComputingSaaSTampere, FI

Juha Riippi(CEO, Co-Founder)Dr. Alexandre Halbach(CTO, Co-Founder)Asser Lähdemäki(Chief Product Officer, Co-Founder)inDr. Valtteri Lahtinen(Chief Scientist, Co-Founder)Dr. Tweedie(UK Director, Co-Founder)

Co-investorsB&C Innovation InvestmentsCrowberry CapitalQAI VenturesFirst Fellow PartnersMaki.vc

Qubitboletosqubit.coApr 2026

Qubit is a Colombian company offering a blockchain-based ticketing system for the entertainment and recreation industry.

Media & EntertainmentSaaS

Juan MarinLina Sanchez

Co-investors500 Global1789 CapitalBaillie GiffordBlackRockETF PartnersEuropean Innovation Council Fund+7 more

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

ComingsoonMonarchQmatter

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.