United States · Series B startup
3 rounds we have observed, with the 5 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Funding summaryUpdated 26 Oct 2026
$13Mraised across 3 rounds since 2012, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
O'Reilly AlphaTech VenturesReported by TechCrunchSEC filing: $9.1M sold, first sale Mar 2018
From a historical funding record
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
O'Reilly AlphaTech VenturesOctopus Ventures/ QualcommL
Qualcomm Ventures
Passion CapitalPassionMissing a round, or an investor who was in one? Tell us.
OpenSignal's investors include O'Reilly AlphaTech Ventures, Octopus Ventures/ Qualcomm, Qualcomm Ventures, Passion Capital and Passion. Octopus Ventures/ Qualcomm led its latest round.
OpenSignal has raised $13M across 3 rounds since 2012.
OpenSignal's most recent round was a Series B of $8.0M in Mar 2018, led by Octopus Ventures/ Qualcomm.
Its most recent round, $8.0M in Mar 2018, is also its largest on record.
OpenSignal's first round on record, in Sept 2012, was backed by O'Reilly AlphaTech Ventures.
OpenSignal's latest named round is a Series B, in Mar 2018.
OpenSignal is based in the United States.
Octopus Ventures/ Qualcomm led the Series B in 2018.
In the same sector, and raised in the last eighteen months.
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United States · 
