Where does Mark Siegel work?

Mark Siegel is Partner Emeritus at Menlo Ventures and Board director at Cofactor Genomics and Board director at Pluribus Networks.

What check size does Mark Siegel write?

Mark Siegel typically writes checks of $250K – $15M.

What boards does Mark Siegel sit on?

Mark Siegel holds tracked board seats at Cofactor Genomics, Ember Technologies, Fox Robotics, RightHand.

Where did Mark Siegel go to school?

Mark Siegel studied at Stanford University Graduate School of Business (MBA); Massachusetts Institute of Technology (B.S., Physics).

Mark Siegel

InvestorFounder

Partner Emeritus at Menlo Ventures · Board director at Cofactor Genomics · Board director at Pluribus Networks

Menlo Park, California

Writes $250K – $15M checks · typically $12M

About

Mark Siegel, an MIT-trained physicist-turned-VC with product experience at Oracle and Netscape, developed the Right Now Economy thesis to identify opportunities where mobile, social, cloud and data intersect.

Likely email· guessed from name + firm domain, not firm-published

m•••@menlovc.comreveal100% confident

Invests in

AI & Machine LearningBiotechCleantechCloud ComputingCybersecurityEnergyFintechHealthtech

Beyond investing

Education: Studied at MIT (Bachelor of Science, physics) Studied at Stanford University's Graduate School of Business (MBA)
Charities: Siegel supports graduate physics students at MIT through a fund he established with his wife.
More: Siegel developed an investment thesis called The Right Now Economy focused on the intersection of mobile, social, cloud computing, and data. Siegel personally invests at the pre-seed stage in frontier technologies including energy, environmental tech, synthetic biology, and quantum computing, and advises the Menlo Bio Fund.

From Mark's own website — common ground for a warm intro.

Board director at Cofactor Genomics YC S15

Intro paths

Mark went through Y Combinator (Summer 2015) — any YC alum in your network can reach them through the YC community.

→

In turn, Mark can intro founders to Cofactor Genomics's investors below.

Cofactor Genomics's investors · 9

Argonautic VenturesNew York · $5M checks Ascension VenturesSaint Louis · $10M – $20M checks · since 2025 DCVC (Data Collective)Palo Alto · $5M – $25M checks Fifty YearsSan Francisco · $250K – $2M checks iSelect FundSt. Louis · $250K – $2M checks Menlo VenturesSan Francisco · $1M – $20M checks · since 2023 National Institutes of Health (NIH)since 2015 TenOneTen VenturesLos Angeles · $500K – $5M checks Y CombinatorSan Francisco · $500K checks · since 2015

Co-founders at Cofactor Genomics

Dave MessinaFounder/COO

Jarret GlasscockFounder/CTO

Jarret GlassockExecutive Officer, Director

Jon ArmstrongDirector

Board director at Pluribus Networks

Intro paths

→

In turn, Mark can intro founders to Pluribus Networks's investors below.

Pluribus Networks's investors · 5

AME Cloud VenturesPalo Alto · $1M – $10M checks · since 2014 DCVC (Data Collective)Palo Alto · $5M – $25M checks · since 2014 Menlo VenturesSan Francisco · $1M – $20M checks · since 2014 New Enterprise Associates (NEA)Menlo Park · $200K – $40M checks · since 2014 TemasekSingapore · since 2014

Co-founders at Pluribus Networks

Robert DrostExecutive Officer, Director

Sunay TripathiDirector

Experience

Menlo VenturesManaging Directorcurrent1996 — present
Netscape CommunicationsBusiness Development1994 — 1996
Oracle CorporationDirector of Product Management, Massively Parallel Systems Division1990 — 1994

Education

Stanford University Graduate School of BusinessMBA1994 — 1996
Massachusetts Institute of TechnologyB.S., Physics1986 — 1990

Deals · 2

Ember TechnologiesBoard seat

via Menlo Ventures · filed Nov 2023 · $21M raise

Cofactor GenomicsBoard seat

via Menlo Ventures · filed Aug 2023 · $2M raise

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

Other disclosed investments

Board seats

Fox Robotics RightHand

Investor

BlueGill TechnologiesDropcam EeroeXelateGetaroundHPE Aruba NetworkingINVIDIPliant TechnologyPluribus NetworksRecursionRedfastRightHandRNA NetworksRubricSchoonerSignifydtCell.ioVoltage Security Warby ParkerYellowbrick

Sources: SEC Form D filings · the firm's website · curated public sources.

Colleagues at Menlo Ventures

Amy Wu

General Partner at Menlo Ventures

Amy Wu Martin

Partner at Menlo Ventures

Aunkur Arya

Venture Partner at Menlo Ventures

Avery More

Venture Partner at Menlo Ventures

Brent Fellows

Vice President, Finance and Tax at Menlo Ventures

Bryan Eglan

Director of Business Development at Menlo Ventures

C.C. Gong

Principal at Menlo Ventures

Claire Palmer

Director of Investor Relations at Menlo Ventures

Network6

Amy WuScout

General Partner at Menlo Ventures

Aunkur AryaScout

Venture Partner at Menlo Ventures

Avery MoreScout

Venture Partner at Menlo Ventures

Croom BeattyScout

Partner at Menlo Ventures

Derek XiaoScout

Investor at Menlo Ventures

Feyza HaskaramanScout

Principal at Menlo Ventures

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

Frequently asked questions

Who is Mark Siegel?: Mark Siegel, an MIT-trained physicist-turned-VC with product experience at Oracle and Netscape, developed the Right Now Economy thesis to identify opportunities where mobile, social, cloud and data intersect.
Where does Mark Siegel work?: Mark Siegel is Partner Emeritus at Menlo Ventures and Board director at Cofactor Genomics and Board director at Pluribus Networks.
What does Mark Siegel invest in?: Mark Siegel invests in AI & Machine Learning, Biotech, Cleantech, Cloud Computing, Cybersecurity, Energy, Fintech, Healthtech.
What check size does Mark Siegel write?: Mark Siegel typically writes checks of $250K – $15M.
What boards does Mark Siegel sit on?: Mark Siegel holds tracked board seats at Cofactor Genomics, Ember Technologies, Fox Robotics, RightHand.
What companies has Mark Siegel invested in?: Investments tracked here include BlueGill Technologies, Cofactor Genomics, Dropcam, Eero, eXelate, Getaround, HPE Aruba Networking, INVIDI, Pliant Technology, Pluribus Networks, Recursion, Redfast, and 9 more.
Where did Mark Siegel go to school?: Mark Siegel studied at Stanford University Graduate School of Business (MBA); Massachusetts Institute of Technology (B.S., Physics).