People

Geoff Ralston

Investor (Signal team listing) at Y Combinator

Sunnyvale, California

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Signal profile Geoff Ralston(1) VCInvestorAngel President at Y Combinator blog.ycombinator.com/author/g...Sunnyvale, California

Current affiliation: Y Combinator · Investor (Signal team listing)
Investment range: $150K – $150K
Sweet spot: $150K
Investments on record: 49

Investments

$4M2026-01	Asymmetric Security	Geoff Ralston, Matt Clifford
$400K2025-07	Locunity	Geoff Ralston
$10M2023-09	Rain Industries	Immad Akhund, Geoff Ralston
$130K2021-02	Turing College	Geoff Ralston
$3M2020-04	Aesthetic	Paul Buchheit, Geoff Ralston
$1M2019-11	Elpha	Geoff Ralston
$1M2018-08	Next Tech	Geoff Ralston
$8M2018-05	Shield Bio	Geoff Ralston
$3M2017-10	Oolu	Geoff Ralston
$—2017-03	Dost Education	Geoff Ralston
$4M2017-02	Shield Bio	Geoff Ralston
$3M2016-11	Miso	Geoff Ralston
$2M2016-08	Superside	Paul Buchheit, Geoff Ralston
$2M2016-08	Iris Automation	Paul Buchheit, Geoff Ralston
$—2016-01	Embark Trucks	Geoff Ralston
$15M2016-01	Weave	Geoff Ralston
$12M2015-12	Educents	Geoff Ralston
$16M2015-11	Weave	Geoff Ralston
$7M2015-10	Hatch	Geoff Ralston
$3M2015-09	Triplebyte	Greg Brockman, Paul Buchheit, Geoff Ralston
$—2015-08	Oolu	Geoff Ralston
$5M2015-04	Benchling	Geoff Ralston
$3M2015-04	Educents	Geoff Ralston
$500K2015-03	Iris Automation	Geoff Ralston
$9M2015-02	LE TOTE	Geoff Ralston
$3M2014-10	Front	Paul Buchheit, Aaron Harris, Geoff Ralston
$600K2014-04	Nervana	Geoff Ralston
$—2014-01	Kodable	Geoff Ralston
$3M2013-10	URX	Geoff Ralston
$4M2013-10	Panorama Education	Geoff Ralston
$4M2013-08	LE TOTE	Geoff Ralston
$2M2013-06	Filestack	Geoff Ralston
$1M2013-03	Watsi	Geoff Ralston
$800K2013-02	Tutorspree	Geoff Ralston
$1M2011-12	Tutorspree	Geoff Ralston
$750K2011-11	Incident Technologies	Geoff Ralston
$2M2011-06	Earbits	Geoff Ralston
$1M2011-05	Mailgun	Geoff Ralston
$1M2011-04	Chirply	Keith Rabois, Geoff Ralston
$1M2011-03	The Mind Company	Geoff Ralston
$1M2010-12	Humanoid	Geoff Ralston
$—2010-08	AeroFS	Geoff Ralston
$5M2007-10	Mint	Geoff Ralston
$1M2007-05	DanceJam	Geoff Ralston
$2M2006-12	Xoopit	Geoff Ralston
$750K2006-10	Imeem	Geoff Ralston
$1M2006-10	Maya's Mom	Geoff Ralston, James Currier
$—2006-04	Cake Financial	Geoff Ralston
$—2006-01	Badongo.com	Geoff Ralston, Saar Gur

Roles

Y Combinator

Investor (Signal team listing)

Current