Investing Profile

Jan Hammer

VCInvestorAngel
General Partner at Index Ventures
indexventures.com/team/jan-ha...United Kingdom
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Current Investing Position
Index Ventures General Partner
Investment Range
$100K - $50.0M
Sweet Spot
$15.0M
Investments On Record
105
Current Fund Size
$1.2B

Jan Hammer is on these Sector & Stage Rankings

Jan Hammer's Investments On Record (46)

CompanyStageDateRound SizeTotal Raised
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), Nick Shalek (Ribbit Capital), Ilya Fushman (Kleiner Perkins), Charlie Cheever, Jared Leto
Mistral AI
Series CSep 2025$2B
SeedJun 2023$110M
$3.1B
Co-investors: Paul Murphy (Lightspeed Venture Partners), Antoine Moyroud (Lightspeed Venture Partners), Jeannette zu Fürstenberg (General Catalyst), Anjney Midha (Andreessen Horowitz), Martin A Cabrera (Quassar Capital), Eric Schmidt (Innovation Endeavors), Ana Levine (E1 Ventures), Guillaume Houzé (Motier Ventures), Nicolas Essayan (Motier Ventures), Xavier Niel (Kima Ventures), Christian Miele (Headline (formerly e.ventures)), Anjney Midha
Spiko
Series AJul 2025$21M
$25M
Co-investors: Arthur Bernard (Athletico Ventures), Valentine Barbelivien (Founders Future), Anthony Danon (Cocoa), Harsh Sinha, Valentine Baudouin, Adrien Montfort, Jean Charles Samuelian, Frederic Montagnon
Moment
Series BJul 2025$36M
$63M
Co-investors: Marc Andrusko (Andreessen Horowitz), David Haber (Andreessen Horowitz), Ali Partovi (Neo), Chris DeVore (Founders' Co-op), Jason Calacanis (LAUNCH), Nick Beim (Venrock), Andy Dunn (Red Swan Ventures), Alexandra Prosszer (Btomorrow Ventures), Henry Kravis
Tebi
Series BJun 2025$34M
Series AOct 2024$22M
$56M
Co-investors: Alex Nichols (CapitalG)
Duna
SeedMay 2025$12M
$12M
Co-investors: Jeanne DeWitt Grosser (Operator Collective), Adriaan Mol (Stash Ventures), Claire Hughes Johnson, Akshay Kothari, Gloria Baeuerlein, Guillaume Princen, Hanno Renner, Jean Charles Samuelian, Job van der Voort, Alexandre Prot
Aetherflux
Series AApr 2025$50M
$50M
Co-investors: Tim Draper (Draper Associates), Ana Levine (E1 Ventures), Jared Leto