United States · 
Who invested in Plex Systems?
Plex Systems's investors include Accel, T. Rowe Price and Apax Partners.
20102011201220132014
$6.0MVenture$500KVenture$30MVenture$50MVenture
United States · Venture startup
Who invested in Plex Systems
4 rounds we have observed, with the 3 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.
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Funding summaryUpdated 31 Oct 2026
$87Mraised across 4 rounds since 2009, from 4 sources
$6.0MVenture$500KVenture$30MVenture$50MVenture
- Latest round
- Venture, $50MJun 2014
- Step-upi
- 1.7×
- Investors
- 3
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Venture, $6.0M Nov 2009
- Biggest round
- $50M Venture · Jun 2014
- Usual gap between rounds
- 18 months the median of 3
The rounds
- Jun 2014Venture$50M1 new1 returning
From a historical funding recordSEC filing: $50M sold, first sale Jun 2014
- Dec 2012
- Dec 2010Venture$500K
No investor was named in the report.
From a historical funding recordSEC filing: $500K sold, first sale Jun 2010
- Nov 2009Venture$6.0M1 new
Reported by news-medical.netSEC filing: $5.2M sold, first sale Oct 2009
Founders and team
From the SEC filings it signed: 2 on the team.
- Mark SymondsPresident and Chief Executive Officeri
- Michael TwarozynskiChief Financial Officer, Secretary and Treasureri
On the board, as filediJason WrightJonathon GolovinPatrick QuirkRobert Beatty
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.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Plex Systems
How much has Plex Systems raised?
Plex Systems has raised $87M across 4 rounds since 2009.
When did Plex Systems last raise?
Plex Systems's most recent round was a Venture of $50M in Jun 2014.
What was Plex Systems's biggest round?
Its most recent round, $50M in Jun 2014, is also its largest on record.
Who backed Plex Systems first?
Plex Systems's first round on record, in Nov 2009, was backed by Apax Partners.
What stage is Plex Systems at?
Plex Systems's latest named round is a Venture, in Jun 2014.
Where is Plex Systems based?
Plex Systems is based in the United States.
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