United States · 
Who invested in Signal Sciences?
Signal Sciences's investors include Index Ventures, Harrison Metal, O'Reilly AlphaTech Ventures, CRV and Bob Pasker, and 5 more on record.
20152016201720182019
$2.0MSeed$15MSeries B$35MSeries C
United States · Series C startup
Who invested in Signal Sciences
Funding summaryUpdated 26 Oct 2026
$52Mraised across 3 rounds since 2014, from 3 sources
$2.0MSeed$15MSeries B$35MSeries C
- Latest round
- Series C, $35MFeb 2019
- Step-upi
- 2.3×
- Investors
- 10
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $2.0M May 2014
- Biggest round
- $35M Series C · Feb 2019
- Usual gap between rounds
- 3 years the median of 2
The rounds
- Feb 2019Series C$35M3 new2 returning
Index Ventures
CRVHarrison Metal
- OATV
- Lead Edge Capital/ CRV
Reported by FinSMEs
- May 2017Series B$15M2 new1 returning
- Index Ventures
O'Reilly AlphaTech Ventures- CRV/ Harrison Metal
Reported by FinSMEs
- May 2014Seed$2.0M5 new
- O'Reilly AlphaTech Ventures
- Bob Pasker
- Alex Stamos
- Chad Dickerson
From a historical funding record
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Seed2014Series B2017Series C2019Index VenturesHarrison MetalO'Reilly AlphaTech VenturesCRVBob PaskerOATVAlex StamosChad DickersonCRV/ Harrison MetalLead Edge Capital/ CRV
Index VenturesO'Reilly AlphaTech VenturesCRVBob PaskerOATVAlex StamosChad DickersonCRV/ Harrison MetalLead Edge Capital/ CRVEveryone who backed them
Bob PaskerAngel1round
OATVVC firm1round
Alex Stamosno record of our own yet1round
Chad Dickersonno record of our own yet1round
CRV/ Harrison Metalno record of our own yet1round
Lead Edge Capital/ CRVno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists Signal Sciences as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Signal Sciences
How much has Signal Sciences raised?
Signal Sciences has raised $52M across 3 rounds since 2014.
When did Signal Sciences last raise?
Signal Sciences's most recent round was a Series C of $35M in Feb 2019.
What was Signal Sciences's biggest round?
Its most recent round, $35M in Feb 2019, is also its largest on record.
Who backed Signal Sciences first?
Signal Sciences's first round on record, in May 2014, was backed by Harrison Metal, O'Reilly AlphaTech Ventures and Bob Pasker and 2 others.
What stage is Signal Sciences at?
Signal Sciences's latest named round is a Series C, in Feb 2019.
Where is Signal Sciences based?
Signal Sciences is based in the United States.
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