Where does Brian Halak work?

Brian Halak is Co-Founder of Nobiastx and Managing Partner at Medical Excellence Capital and Board director at ThirdLaw Molecular and Board director at Kona Medical and Board director at Bionano Genomics.

What check size does Brian Halak write?

Brian Halak typically writes checks of $100K – $5M.

What boards does Brian Halak sit on?

Brian Halak holds tracked board seats at Bionano Genomics, Kona Medical, SonoThera.

Where did Brian Halak go to school?

Brian Halak studied at Thomas Jefferson University (Ph.D., Immunology); University of Pennsylvania (B.S.E., Bioengineering).

Brian Halak

InvestorFounder

Managing Partner at Medical Excellence Capital · Partner at Domain Associates · Board director at ThirdLaw Molecular · Board director at Kona Medical · Board director at Bionano Genomics

Wayne, Pennsylvania, United States

Writes $100K – $5M checks · typically $1.5M

FoundedNobiastx

Find your path to Brian

171 people in our graph share verified history with Brian — schools, employers, funds. One of them is your warm intro.

Wesley BarrowunlockedBrian: together at University of Pennsylvania (2001–2005)

×3Brian: together at University of Pennsylvania

×6Brian: together at Medical Excellence Capital

×2Brian: together at Domain Associates

About

Brian Halak is a Partner at Domain Associates and Managing Partner at Medical Excellence Capital (MEC), working in biotech investing and company formation. He has been involved in founding several biotech companies, including Tobira Therapeutics, Elite NeuroVascular, WindMIL Therapeutics, and Nobias Therapeutics, and served as CEO of WindMIL and Nobias from inception through their first institutional financing rounds.

Contact· published on Brian's own website

Invests in

AI & Machine LearningBiotechHealthtechMedical Devices

Board director at ThirdLaw Molecular

Intro paths

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In turn, Brian can intro founders to ThirdLaw Molecular's investors below.

ThirdLaw Molecular's investors · 1

Medical Excellence CapitalNew York · since 2025

Co-founders at ThirdLaw Molecular

Christian SchafmeisterExecutive Officer, Director

Board director at Kona Medical

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In turn, Brian can intro founders to Kona Medical's investors below.

Kona Medical's investors · 5

BioStar VenturesPetoskey · since 2015 Domain AssociatesPrinceton · $200K – $15M checks · since 2015 Essex Woodlands Healthcare PartnersNew York · $20M – $80M checks · since 2015 Lightstone VenturesPortola Valley · since 2015 Morningside GroupHong Kong · since 2015

Co-founders at Kona Medical

Michael GertnerExecutive Officer, Director

Board director at Bionano Genomics

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In turn, Brian can intro founders to Bionano Genomics's investors below.

Bionano Genomics's investors · 2

Domain AssociatesPrinceton · $200K – $15M checks · since 2014 Hudson BayBay Harbor Islands

Co-founders at Bionano Genomics

Han CaoExecutive Officer

Experience

Domain AssociatesPartnercurrent2001 — present
Medical Excellence Capital, LLCManaging Partnercurrent2021 — present
University of PennsylvaniaPractice Professorcurrent2021 — presentPhiladelphia, PA
Nobias Therapeutics, Inc.Founder and CEO2020 — 2021
WindMIL Therapeutics, Inc.Founder and CEO2015 — 2019Washington DC-Baltimore Area
Advanced Technology VenturesAssociate2000 — 2001
The Wilkerson GroupAssociate1993 — 1995

Skills & more

Corporate Development16Biotechnology5Due Diligence9Private Equity10Lifesciences1Venture Financing18Growth Capital2Angel Investing4Commercialization2Deal Sourcing1Intellectual Asset ManagementBuyouts1

+12 more

ValuationRegistered Patent AttorneyMezzanineCapital FormationStart-upsMergersEarly Stage CompaniesEntrepreneurshipStrategyIPOM&A experienceMergers & Acquisitions

From Brian's professional profile.

Deals · 3

SonoTheraBoard seat

via Domain Associates · filed Jun 2026 · $125.5M raise

Kona MedicalBoard seat

via Domain Associates · filed Sep 2015 · $22.4M raise

Bionano GenomicsBoard seat

via Domain Associates · filed Jan 2015 · $68.4M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Investor

Alimera SciencesCarticept MedicalCorridor PharmaceuticalsDicerna PharmaceuticalsEddingpharm (Cayman)Esprit PharmaImmunitas Therapeutics Oraya TherapeuticsVanda Pharmaceuticals

Sources: SEC Form D filings · curated public sources.

Colleagues at Medical Excellence Capital

Annabel Stoddart

Office Manager and Executive Assistant at Medical Excellence Capital

Brad Ringeisen

Scientific Advisory Board – Executive Director of Innovative Genomics Institute at Medical Excellence Capital

Douglas Wallace

Scientific Advisory Board – Director of Center for Mitochondrial and Epigenomic Medicine at Medical Excellence Capital

Eric Heil

Managing Partner at Medical Excellence Capital

Gregg Semenza

Scientific Advisory Board – Professor at Johns Hopkins at Medical Excellence Capital

Halak Brian

Promoter at Medical Excellence Capital

Heil Eric

Promoter at Medical Excellence Capital

Joan M Mancini

Promoter at Medical Excellence Capital

Network5

Asish K. Xavier

Vice President, Venture Investments at JJDC

Eric Heil

Managing Partner at Medical Excellence Capital

John Prufeta

Chief Executive Officer and Managing Partner at Medical Excellence Capital

Lori Hu

Managing Director at Vertex Ventures HC

Rajul Jain

Managing Director at Vida Ventures

Investors connected to Brian in public investor directories — a warm-intro map.

Frequently asked questions

Who is Brian Halak?: Brian Halak is a Partner at Domain Associates and Managing Partner at Medical Excellence Capital (MEC), working in biotech investing and company formation. He has been involved in founding several biotech companies, including Tobira Therapeutics, Elite NeuroVascular, WindMIL Therapeutics, and Nobias Therapeutics, and served as CEO of WindMIL and Nobias from inception through their first institutional financing rounds.
Where does Brian Halak work?: Brian Halak is Co-Founder of Nobiastx and Managing Partner at Medical Excellence Capital and Board director at ThirdLaw Molecular and Board director at Kona Medical and Board director at Bionano Genomics.
What does Brian Halak invest in?: Brian Halak invests in AI & Machine Learning, Biotech, Healthtech, Medical Devices.
What check size does Brian Halak write?: Brian Halak typically writes checks of $100K – $5M.
What companies did Brian Halak found?: Brian Halak founded Nobiastx.
What boards does Brian Halak sit on?: Brian Halak holds tracked board seats at Bionano Genomics, Kona Medical, SonoThera.
What companies has Brian Halak invested in?: Investments tracked here include Alimera Sciences, Bionano Genomics, Carticept Medical, Corridor Pharmaceuticals, Dicerna Pharmaceuticals, Eddingpharm (Cayman), Esprit Pharma, Immunitas Therapeutics, Kona Medical, Oraya Therapeutics, SonoThera, Vanda Pharmaceuticals.
Where did Brian Halak go to school?: Brian Halak studied at Thomas Jefferson University (Ph.D., Immunology); University of Pennsylvania (B.S.E., Bioengineering).

Same school

Also attended Thomas Jefferson University24

Mike PelliniGeneral Partner at S32 Hend AzzerayerLP Relations at Transform Capital Management Vic StoneGeneral Partner, President and Head of 82VS Dallas at 82VS Amit GoldmanInvestor at DigitalDx Ventures Dr. Justin YoungVenture Partner at Boutique Venture Partners Dr. Jeff DiLisiExecutive Partner at Tamarind Hill

+ 18 more

Also attended University of Pennsylvania1,419

Brian ActonCo-founder of WhatsApp; co-founder of Signal Foundation Kunal BahlCo-founder of Snapdeal; co-founder of Titan Capital Dasha MaggioPartner at Felicis Ventures, writer on venture capital and founder psychology Nancy WangInvestor at Felicis Ventures Leah von SiemensPartner at Manta Ray Ventures Eghosa OmoiguiFounder and Managing General Partner at EchoVC Partners

+ 1,413 more

Shared employers

Also worked at University of Pennsylvania210

Wesley BarrowPartner at Correlation Ventures David MagermanManaging Partner at Differential Ventures Nuan ZhangInvestor at Episode1 Vyas RamananVenture Partner at Third Rock Ventures Louis BernemanFounding Partner at Osage University Partners Cassidy BlundellPartner at Mission Biocapital

+ 204 more

Also worked at The Wilkerson Group3

Michelle SnyderPartner, Venture at McKesson Ventures Zubeen ShroffManaging Partner at Galen Partners L. John WilkersonManaging Director at Galen Partners