Investing Profile

Dalton Caldwell

VCInvestorAngel
Managing Director at Y Combinator
daltoncaldwell.comSan Francisco, California
Photo of Dalton Caldwell, Managing Director at Y Combinator
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Networks Dalton is a member of
Y Combinator Network
38 CONNECTIONS
Y Combinator Network
38 CONNECTIONS
Y Combinator Network
38 CONNECTIONS

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Current Investing Position
Y Combinator Managing Director
Investment Range
$150K - $150K
Sweet Spot
$150K
Investments On Record
178

Dalton Caldwell is on these Sector & Stage Rankings

Dalton Caldwell's Investments On Record (157)

CompanyStageDateRound SizeTotal Raised
Momentic
Series ANov 2025$15M
$20M
Co-investors: Sara Du (Greylock), Harj Taggar (Y Combinator), Kulveer Taggar, Aaron Levie
Sim
Series ANov 2025$7M
Pre SeedJun 2025$500K
$7.5M
Co-investors: Ali Rowghani (Y Combinator), Chris Howard (Fuel Capital), Paul Buchheit (Y Combinator), Kulveer Taggar, Paul Graham
Magic Patterns
Series ANov 2025$6M
$6M
Avallon Labs
SeedNov 2025$5M
Pre SeedApr 2025
$5M
Co-investors: Will Prendergast
Flint
Series ANov 2025$15M
Pre SeedSep 2023$500K
$44M
Co-investors: Marc Bhargava (General Catalyst), Christiaan Vorkink (True Ventures), Lan Xuezhao (Basis Set Ventures), Jason Yeh (Patron), Jaynti Kanani (Polygon), Daniel Levine (Accel), Anamitra Banerji (Afore Capital), Ali Partovi (Neo), Sanat Rao (BlockTower Capital), Tim Griffin, Ajit Tripathi, Do Kwon, Kunal Shah
Campfire
Series BOct 2025$65M
Series AJun 2025$39M
SeedFeb 2024$4M
$110M
Co-investors: Jordan Angelos (Ribbit Capital), Nick Shalek (Ribbit Capital), Christine Esserman (Accel), John Locke (Accel), Angus Davis (Foundation Capital), Karim Atiyeh
AiPrise
Series AOct 2025$13M
SeedSep 2022$2M
$17M
Co-investors: Petra Griffith (Wedbush Ventures), David Fairman (SixThirty), Samvit Ramadurgam, Immad Akhund
Alex AI
Series ASep 2025$17M
$21M
Co-investors: Nicolas Dessaigne (Y Combinator), Kris Fredrickson (Verified Capital), Samit Kalra (1984 Ventures)

Dalton Caldwell's Experience

Managing Director Y Combinator2020 - Present
Partner Y Combinator2014 - Present
Part-time Partner Y Combinator2013 - 2014
Founder/CEO App.net2010 - 2014
Consultant MySpace2009 - 2010
Founder/CEO imeem, inc2003 - 2009
Intern VA Software2002 - 2003