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Brook Byers

AddedMar 31, 2024

UpdatedJun 28, 2026

Brook Byers

Brook Byers

Board Member, Nanogen

Brook Byers's Career

Nanogen

San Diego, CA, US

Board Member· Board

Kleiner Perkins Caufield & Byers

Kleiner Perkins Caufield & Byers

Menlo Park, CA, US

Co-Founder

CareDx

Brisbane, CA, US

Board Member· Board

Ligand Pharmaceuticals

Ligand Pharmaceuticals

San Diego, CA, US

Board Member· Board

Elcelyx Therapeutics

Elcelyx Therapeutics

San Diego, CA, US

Board Member· Board

Tethys Bioscience

Tethys Bioscience

Emeryville, CA, US

Board Member· Board

Ucsf

San Francisco, CA, US

Board Member· Board

Newsela

New York City, NY, US

Board Member· Board

Cardiodx

Redwood City, CA, US

Board Member· Board

Verana Health

San Francisco, CA, US

Board Member· Board

GRAIL

Menlo Park, CA, US

Board Member· Board

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Brook Byers's Career

Nanogen

Public7501993San Diego, CA, US

Board Member· Board

Leadership at Nanogen

Howard BirndorfBoard Member

Stelios B PapadopoulosBoard Member

Kleiner Perkins Caufield & Byers

Kleiner Perkins Caufield & Byers

Investment FirmInvestment Firm2891972Menlo Park, CA, US

Co-Founder

Recent news

Amazon fulfillment competitor Stord raises $250M at $3B valuationTechCrunch · 2026

Parallel Web Systems hits $2B valuation five months after its last big raiseTechCrunch · 2026

Harvey confirms $11B valuation: Sequoia triples downTechCrunch · 2026

Leadership at Kleiner Perkins Caufield & Byers

Eugene KleinerCo-Founder

Ryan PanchadsaramBoard Member

Frank CaufieldCo-Founder

John DoerrBoard Member

Similar to Kleiner Perkins Caufield & Byers

Sequoia CapitalMenlo Park, CA, USest. 1972Sequoia CapitalMenlo Park, CA, US · est. 1972

Sequoia Capital: A leading US venture capital firm, managing $85bn, specializing in tech investments.

Investment Firm600

Khosla VenturesMenlo Park, CA, USest. 2004Khosla VenturesMenlo Park, CA, US · est. 2004

Khosla Ventures: A US venture capital firm investing in early-stage tech, finance, health, and clean energy startups.

Investment Firm127

Greylock PartnersMenlo Park, CA, USest. 1965Greylock PartnersMenlo Park, CA, US · est. 1965

Greylock Partners: A pioneering venture capital firm, managing over $3.5B, specializing in early-stage software companies.

Investment Firm30

Founders FundSan Francisco, CA, USest. 2005Founders FundSan Francisco, CA, US · est. 2005

San Francisco venture capital firm Founders Fund manages roughly $17 billion in assets.

Investment Firm50

CareDx

Public$574.9M7701999Brisbane, CA, US

Board Member· Board

Recent news

Calo raises $25 million to expand its ready-to-eat meal service beyond the Middle EastTechCrunch · 2024

Leadership at CareDx

Jay WohlgemuthFounder

Ralph SnydermanBoard Member

Peter MaagBoard Member

Michael GoldbergBoard Member

Grace ColónBoard Member

Similar to CareDx

IncellDxMenlo Park, CA, USMedical Instrumentsest. 2009IncellDxMenlo Park, CA, US · est. 2009

IncellDx, a California-based medical firm, develops and distributes diagnostic instruments for life-threatening diseases globally.

Series A · $9M26

TAI DiagnosticsWauwatosa, WI, USDiagnostic Testsest. 2013TAI DiagnosticsWauwatosa, WI, US · est. 2013

TAI Diagnostics: A Wisconsin-based biotech firm offering non-invasive, sensitive tests for transplant patients.

Series A · $29M11

SynapDxLexington, MA, USDiagnostic Testsest. 2010SynapDxLexington, MA, US · est. 2010

SynapDX: Pioneering early autism detection through blood-based diagnostic tests.

Series B · $32.4M11

DxNASt. George, UT, USDiagnostic TestsDxNASt. George, UT, US

DxNA LLC, a Utah-based medical organization, develops affordable, rapid molecular diagnostic tools, focusing on infectious diseases for underserved hospitals and clinics.

Angel · $6.6M19

Ligand Pharmaceuticals

Ligand Pharmaceuticals

Public$875M1551987San Diego, CA, US

Board Member· Board

Leadership at Ligand Pharmaceuticals

John W. KozarichBoard Member

Brook ByersFounder

John LaMattinaBoard Member

Zhi LinBoard Member

Todd Christopher DavisBoard Member

Elcelyx Therapeutics

Elcelyx Therapeutics

Series E$96.8M92010San Diego, CA, US

Board Member· Board

Leadership at Elcelyx Therapeutics

Ginger GrahamBoard Member

Bosun HauBoard Member

Alain BaronBoard Member

Jim GlasheenBoard Member

Tethys Bioscience

Tethys Bioscience

Public$75.4M752002Emeryville, CA, US

Board Member· Board

Leadership at Tethys Bioscience

George RehmBoard Member

Bill EricsonBoard Member

Randy StrahanBoard Member

Gregory T WentBoard Member

Similar to Tethys Bioscience

Liquid BiotechPhiladelphia, PA, USBlood Testsest. 2012Liquid BiotechPhiladelphia, PA, US · est. 2012

Liquid Biotech USA: Developing non-invasive blood tests for a healthier future.

Thetis PharmaceuticalsRidgefield, CT, USDrug Developmentest. 2011Thetis PharmaceuticalsRidgefield, CT, US · est. 2011

Thetis Pharmaceuticals: Specializing in cardio-metabolic, cancer, and autoimmune disease treatments.

Series A · $22.9M30

Predictive BiosciencesLexington, KY, USCancer Testsest. 2006Predictive BiosciencesLexington, KY, US · est. 2006

Predictive Biosciences develops molecular tests and technologies for cancer diagnosis and monitoring in the US.

Pre-Seed · $68.1M75

Gryphon BioSouth San Francisco, CA, USBlood Tests, Diagnosticsest. 2018Gryphon BioSouth San Francisco, CA, US · est. 2018

Gryphon Bio: A preclinical-stage bioconjugate firm innovating in precision medicine and biomarker discovery.

Ucsf

GovernmentGovernment$40.6M13.7k1873San Francisco, CA, US

Board Member· Board

Recent news

VC Ron Conway says he has a ‘rare form of cancer’TechCrunch · 2026

Leadership at Ucsf

Hugh TolandFounder

Kathy GiacominiBoard Member

Krystof BankiewiczBoard Member

Monique LeSarreBoard Member

Mary Helen Barcellos-HoffBoard Member

Steven HettsBoard Member

Similar to Ucsf

University of California BerkeleyBerkeley, CA, USEducation, Researchest. 1868University of California BerkeleyBerkeley, CA, US · est. 1868

UC Berkeley: A leading public university in California, fostering innovation since 1868.

Government24.1k

University of CaliforniaOakland, CA, USEducation, Researchest. 1868University of CaliforniaOakland, CA, US · est. 1868

Regents of the University of California: Governing board for UC, appointed mostly by the state Governor.

Government · $1.2M22.7k

UclaLos Angeles, CA, USEducation, Researchest. 1919UclaLos Angeles, CA, US · est. 1919

UCLA, a public land-grant research university, is the second-oldest campus in the University of California system.

Government · $129.9M25.3k

California State UniversityLong Beach, CA, USEducationest. 1857California State UniversityLong Beach, CA, US · est. 1857

California's largest public university system with 23 campuses and 457,992 students.

Government · $8.7M10k

Newsela

Series D$172.2M6182013New York City, NY, US

Board Member· Board

Leadership at Newsela

Matthew GrossBoard Member

Woody MarshallBoard Member

Tory PattersonBoard Member

Dan Cogan-DrewCo-Founder

Cardiodx

Series B$337.3M1462004Redwood City, CA, US

Board Member· Board

Leadership at Cardiodx

David LevisonFounder

Ajit SinghBoard Member

Lou LangeBoard Member

Patrick EnrightBoard Member

David L LevisonBoard Member

Verana Health

Series E$288.8M2252008San Francisco, CA, US

Board Member· Board

Leadership at Verana Health

Steven SchwartzBoard Member

Miki KapoorCo-Founder

Krishna YeshwantBoard Member

Boris NikolicBoard Member

Jeffrey LowBoard Member

David ParkeBoard Member

GRAIL

Public$2B8232016Menlo Park, CA, US

Board Member· Board

Recent news

Littlebird raises $11M for its AI-assisted ‘recall’ tool that reads your computer screenTechCrunch · 2026

Leadership at GRAIL

George GolumbeskiBoard Member

Jeff DeanBoard Member

Jeff HuberBoard Member

William H. RastetterBoard Member

Maykin HoBoard Member

Similar to GRAIL

FreenomeSouth San Francisco, CA, USCancer Detectionest. 2014FreenomeSouth San Francisco, CA, US · est. 2014

Freenome, a US-based company, is dedicated to providing tools for cancer detection, treatment, and prevention.

Late Stage Private · $1.1B375

Guardant HealthPalo Alto, CA, USCancer Diagnosticsest. 2011Guardant HealthPalo Alto, CA, US · est. 2011

Guardant Health: A Palo Alto-based biotech firm providing global cancer diagnostics and sequencing services.

Thrive Earlier DetectionCambridge, MA, USCancer Detectionest. 2019Thrive Earlier DetectionCambridge, MA, US · est. 2019

Thrive, a healthcare company, pioneers in early cancer detection through its innovative test, CancerSEEK.

Late Stage Private · $367M175

Exact SciencesMadison, WI, USCancer Diagnosticsest. 1995Exact SciencesMadison, WI, US · est. 1995

Exact Sciences Corp., a US-based firm, develops non-invasive tests for early colorectal cancer detection.

Public · $2.1B6.4k

Brook Byers's Co-Investors

Asher DelugCo-invested · SpinLaunch Series B

Greg McAdooCo-invested · SpinLaunch Series B

Andrew L. FarkasCo-invested · SpinLaunch Series B

Chuck BradyCo-invested · SpinLaunch Series B

Chuck BradyCo-invested · SpinLaunch Series B

Drew HoustonCo-invested · Regard Series A

Drew HoustonCo-invested · Regard Series A

Marc BenioffCo-invested · Lightship Series A

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Jay Geoffrey WacherBoard Member · Bukalapak

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Achmad ZakyCo-Founder · Bukalapak

Chi-hyung SongBoard Member · Dunamu

Haeil YiCo-Founder · Dunamu

Hyoung-nyon KimCo-Founder · Dunamu

People Similar to Brook Byers

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