Investing Profile

Jan Hammer

VCInvestorAngel
Partner at Index Ventures
indexventures.com/team/jan-ha...United Kingdom
Photo of Jan Hammer, Partner at Index Ventures
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Networks Jan is a member of
University of Oxford Network
358 CONNECTIONS
Index Ventures Network
54 CONNECTIONS
Robinhood Network
40 CONNECTIONS
Mistral AI Network
14 CONNECTIONS

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Current Investing Position
Index Ventures Partner
Investment Range
$100K - $50.0M
Sweet Spot
$15.0M
Investments On Record
118
Current Fund Size
$1.2B

Jan Hammer is on these Sector & Stage Rankings

Jan Hammer's Investments On Record (49)

CompanyStageDateRound SizeTotal Raised
Alan
Secondary MarketJun 2026
Series GJun 2026$550M
Series UnknownMar 2026$120M
Series EMay 2022$190M
Series DApr 2021$220M
Series CApr 2020$54M
Series BFeb 2019$45M
Series AApr 2018$28M
$1.2B
Co-investors: Hélène Falchier (Portage Ventures), Romain Lavault (Partech Ventures), Xavier Niel (Iliad), Tom Stafford (DST Global), Tobias Lutke
Behavox
Private EquityJun 2026$170M
Series BNov 2017$20M
$360M
Co-investors: Hussein Kanji (Hoxton Ventures), Steve Kuo (Hercules Capital), Munish Varma (SoftBank Investment Advisers), Mike Collett (Promus Ventures)
Moment
Series CMay 2026$78M
Series BJul 2025$36M
$140M
Co-investors: Justin Overdorff (Lightspeed Venture Partners), David Haber (Andreessen Horowitz), Jason Calacanis (Uber), Alexandra Prosszer (Btomorrow Ventures), Ali Partovi (Xtripe Angels), Chris DeVore (Founders' Co-op), Marc Andrusko (Oak HC/FT), Nick Beim (Venrock), Andy Dunn (Red Swan Ventures), Henry Kravis
Adfin
Series AMay 2026$18M
SeedJul 2024$5M
$23M
Co-investors: Robert Jäckle (Visionaries Club), Robert Lacher (La Famiglia)
Cowboy Space
Series BMay 2026$280M
Series AApr 2025$50M
$330M
Co-investors: Tim Draper (Draper Associates), Jared Leto
Duna
Series AFeb 2026$35M
SeedMay 2025$12M
$47M
Co-investors: Gloria Baeuerlein (Index Ventures), Jean Charles Samuelian (Mistral AI), Alex Nichols (CapitalG), Jeanne DeWitt Grosser (Operator Collective), Guillaume Princen (MyC), Job van der Voort (Remote First Capital), Alexandre Prot (Qonto), Adriaan Mol (Unknown Ventures), Claire Hughes Johnson, Hanno Renner, Akshay Kothari
Duvo
SeedDec 2025$15M
$15M
Harmonic
Series CNov 2025$120M
Series BJul 2025$100M
Series ASep 2024$75M
$300M
Co-investors: Andrew Reed (Sequoia Capital), Shaun Maguire (Sequoia Capital), Nick Shalek (Ribbit Capital), Ilya Fushman (Kleiner Perkins), Jared Leto, Charlie Cheever

Jan Hammer's Experience

Board Member RobinhoodPresent
Board Member CollibraPresent
Investor SafetyCulturePresent
Board Member CapitolisPresent
Board Member AlanPresent
Board Member ComplyAdvantagePresent
Board Observer DuffelPresent
Board Member Resistant.AIPresent
Board Observer RemotePresent
Board Member Rohlik.czPresent
Investor AtlarPresent
Investor Tema ETFsPresent
Investor Mistral AIPresent
Board Member ApronPresent
Board Observer HarmonicPresent
Investor TebiPresent
Board Observer ValderaPresent
Co-Chair of CEEPAC Acquisition Committee TatePresent
Investor Cowboy SpacePresent
Investor DunaPresent
Board Observer SpikoPresent
Board Member MomentPresent
Board Observer duvo.aiPresent
Board Observer ParallelPresent
Partner Index VenturesPresent

Jan Hammer's Education

University of Oxford MA Philosophy, Politics and Economics

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