Who invested in ZIRX?
ZIRX's investors include Norwest Venture Partners, Trinity Ventures, Bessemer Venture Partners, Fabrice Grinda and Brendan Wallace, and 2 more on record.
United States · Venture startup
3 rounds we have observed, with the 7 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
$36Mraised across 3 rounds since 2014, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
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.
ZIRX's investors include Norwest Venture Partners, Trinity Ventures, Bessemer Venture Partners, Fabrice Grinda and Brendan Wallace, and 2 more on record.
ZIRX has raised $36M across 3 rounds since 2014. One round did not disclose an amount, so the total is a floor.
ZIRX's most recent round was a Venture in Sept 2015.
ZIRX's largest round on record is $30M (Series B), in Apr 2015.
ZIRX's first round on record, in Sept 2014, was backed by Norwest Venture Partners and Trinity Ventures.
ZIRX's latest named round is a Venture, in Sept 2015.
ZIRX is based in the United States.
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