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
174

Dalton Caldwell is on these Sector & Stage Rankings

Dalton Caldwell's Investments On Record (154)

CompanyStageDateRound SizeTotal Raised
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: Lan Xuezhao (Basis Set Ventures), Jason Yeh (Patron), Christiaan Vorkink (True Ventures), Marc Bhargava (General Catalyst), 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: John Locke (Accel), Christine Esserman (Accel), Nick Shalek (Ribbit Capital), Jordan Angelos (Ribbit Capital), 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: Samit Kalra (1984 Ventures), Nicolas Dessaigne (Y Combinator), Kris Fredrickson (Verified Capital)
Serafis
Pre SeedSep 2025$500K
$500K
Flex
Series ASep 2025$15M
SeedSep 2024$3M
Pre SeedSep 2023
$66M
Co-investors: Charles Hudson (Precursor Ventures), Yash Patel (FTX Ventures), Sriram Krishnan (Andreessen Horowitz), Beth Turner (SV Angel), Liz Wessel (First Round Capital), Zaid Rahman (305 Ventures), Jon Soberg (MS&AD Ventures), Mark Kahn (Bria Fund), Turner Novak (Banana Capital), Saxon Baum
Novig
Series AAug 2025$18M
SeedSep 2022$6M
Pre SeedJun 2022$500K
$25M
Co-investors: Joe Montana (Liquid 2 Ventures), Nicolas Dessaigne (Y Combinator), Aneel Ranadive (Soma Capital), Paul Graham, Arash Ferdowsi

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