Where does Brian Halak work?

Brian Halak is Managing Partner at Medical Excellence Capital 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 Harvard Kennedy School (Master in Public Policy, International Global Affairs); The Fletcher School at Tufts University; Massachusetts Institute of Technology.

Brian Halak

Investor

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

Pennsylvania

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

About

Brian Halak is a Partner at Domain Associates (DomainVC), a venture capital firm founded in 1985 that focuses exclusively on biotechnology investing. The firm served as investment advisors to what it describes as the first VC fund dedicated to biotech and has managed nine subsequent biotech venture funds.

Contact· published on Brian's own website

Invests in

AI & Machine LearningBiotechHealthtechMedical Devices

Board director at Kona Medical

Intro paths

→

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

Kona Medical's investors · 2

Domain AssociatesPrinceton · $200K – $15M checks · since 2015 Lightstone VenturesPortola Valley · since 2015

Co-founders at Kona Medical

Michael GertnerExecutive Officer, Director

Board director at Bionano Genomics

Intro paths

→

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

Bionano Genomics's investors · 1

Domain AssociatesPrinceton · $200K – $15M checks · since 2014

Co-founders at Bionano Genomics

Han CaoExecutive Officer

Experience

Mission of Japan to NATOSecond Secretarycurrent2026 — present
Ministry of Foreign Affairs of JapanDiplomatic Attache, Consulate-General of Japan in Boston2024 — 2026アメリカ合衆国マサチューセッツボストン
Ministry of Foreign Affairs of JapanForeign Service Officer, Oceania Division2022 — 2024日本東京都霞が関
Hudson InstituteResearch Internship2025Washington DC
Ministry of Foreign Affairs of JapanResearch Assistant Intern, Regional Policy Division2020日本東京都霞が関

Skills & more

Social MediaDiplomacyAdobe Photoshop学術研究English

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.

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

John Hornbostel

Counsel at Medical Excellence Capital

John Prufeta

Chief Executive Officer and Managing Partner at Medical Excellence Capital

Joni Mancini

Managing Partner 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 (DomainVC), a venture capital firm founded in 1985 that focuses exclusively on biotechnology investing. The firm served as investment advisors to what it describes as the first VC fund dedicated to biotech and has managed nine subsequent biotech venture funds.
Where does Brian Halak work?: Brian Halak is Managing Partner at Medical Excellence Capital 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 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 Harvard Kennedy School (Master in Public Policy, International Global Affairs); The Fletcher School at Tufts University; Massachusetts Institute of Technology.

Same school

Also attended Harvard Kennedy School265

Jeremy PhilipsInvestor at Spark Capital Mike MoradiGeneral Partner at Cortado Ventures Andrew ForysiakOwner, AJF and Associates at Riphean Investments Douglas Lemott Jr.Vice President, SAP National Security Services at Riphean Investments Josephine LiangFinance Manager at CapitalG Steve SargeantSenior Advisory Board at IronGate Capital Advisors

+ 259 more

Also attended The Fletcher School at Tufts University52

Roger KrakoffGeneral Partner at Monta Vista Capital Mark OdermanSenior Advisory Board at IronGate Capital Advisors Ajaita ShahGeneral Partner Advisor at Beyond Capital Ventures Mayumi BeppuInvestor at JIC Venture Growth Investments Shelby Miller (Herrington)Investor at Silversmith Capital Partners Chris FarmerPartner & CEO at SignalFire

+ 46 more

Also attended Massachusetts Institute of Technology1,535

Fred WilsonCo-founder & Partner at Union Square Ventures Elad GilSolo general partner investing through Gil Capital Aileen LeeFounder & Managing Partner of Cowboy Ventures Hemant TanejaCEO & Managing Director of General Catalyst Nat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDG Brad FeldCo-founder of Foundry and Techstars

+ 1,529 more

Also attended Keio University146

Hayata TokizawaVice President at Fin Capital Rina OkachiAssociate at Fin Capital Kay EnjojiSenior Advisor at Pangaea Ventures Us Inc.Tetsu NomuraPrincipal at Sozo Ventures Bor BoerManaging Director at Capagro Natsuki TamuraInvestor at Inception Studio Capital

+ 140 more

Shared employers

Also worked at Ministry of Foreign Affairs of Japan2

Ryosuke YamawakiPartner at VKAV (Verod-Kepple Africa Ventures)Boyd CarsonInvestor at Sapphire Capital

Also worked at Hudson Institute8

H.R. McMasterLieutenant General USA (ret.) at NEW VISTA CAPITAL Sasha BhatiaFounders Office at Lumikai Bryan ClarkAdvisor at Marlinspike Partners Adrienne SchmoekerSenior Program Officer at Bezos Earth Fund Ivan HelinInvestor at FiBAN Jodi RingelExecutive Director at Focus Central America

+ 2 more