Investing Profile

Sean O'Sullivan(1)

InvestorVC
Managing Partner, SOSV
sosv.comNew York City
Photo of Sean O'Sullivan, Managing Partner at SOSV
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Sean O'Sullivan's investing connections

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1 Investor

Connected to David S. Rose (Rose Tech Ventures).

Find Sean O'Sullivan on

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Current Investing Position
SOSV Managing Partner
Investment Range
$100K - $5.0M
Sweet Spot
$1.5M
Investments On Record
134
Current Fund Size
$1.2B

Sean O'Sullivan is on these Sector & Stage Rankings

Sean O'Sullivan's Investments On Record (55)

CompanyStageDateRound SizeTotal Raised
MixRift
Pre SeedAug 2024$2M
Pre SeedMay 2024
$2M
Co-investors: Lomax Ward (Outsized Ventures)
VALANX Biotech
SeedJul 2024
$100K
Co-investors: Bill Liao (SOSV), Florian Resch (IST cube)
GlowDx
Convertible NoteJun 2024
SeedJul 2022
Convertible NoteAug 2020
Pre SeedSep 2019$500K
Convertible NoteMay 2017$130K
Pre SeedJun 2015$100K
$730K
Co-investors: Bill Liao (SOSV)
Cell BioEngines
Pre SeedApr 2024$500K
Pre SeedAug 2023$250K
Pre SeedMar 2023$280K
$1M
Co-investors: Stephen Chambers (SOSV)
DropGenie
Convertible NoteMar 2024
SeedOct 2021
Convertible NoteMay 2020
SeedApr 2019
Co-investors: Bill Liao (SOSV)
Aequor
SeedJan 2024$200K
$200K
Verdex Technologies
Convertible NoteDec 2023
Convertible NoteJun 2023
Series ASep 2022
Series ANov 2021
Convertible NoteJul 2021
Series ASep 2020
Convertible NoteOct 2018
Convertible NoteMar 2018
Convertible NoteFeb 2017
Convertible NoteJul 2016
Convertible NoteFeb 2016
Convertible NoteApr 2015
Series UnknownJul 2011
Co-investors: Bradford Higgins (SOSV), Duncan Turner (SOSV)
Flore by Sun Genomics
Series BDec 2023
Series BNov 2022
Convertible NoteSep 2022
Series AJun 2020$9M
Convertible NoteOct 2019
SeedJan 2019$3M
SeedDec 2017
$12M
Co-investors: Po Bronson (SOSV), Arvind Gupta (Mayfield)