United States · 
Who invested in Onkos Surgical?
Onkos Surgical's investors include Canaan, 3D Systems, 1315 Capital and Canaan Partners/ 1315.
20172019202120232025
?Series A$18MSeries B$30MDebt$37MRound
United States · Funded startup
Who invested in Onkos Surgical
Funding summaryUpdated 26 Oct 2026
$85Mraised across 4 rounds since 2015, from 4 sources
$18MSeries B$30MDebt$37MRound
- Latest round
- Round, $37MAug 2026
- Step-upi
- 1.2×
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A Oct 2015
- Biggest round
- $37M Round · Aug 2026
- Usual gap between rounds
- 19 months the median of 3
The rounds
- Aug 2026Round$37M
No investor was named in the report.
Filed with the SEC (Form D); no report of this raise yetSEC filing: $37M sold, first sale Aug 2026
- Jan 2025
- Apr 2017Series B$18M2 new
3D Systems- Canaan Partners/ 1315
Reported by FinSMEsSEC filing: $13M sold, first sale Apr 2017
- Oct 2015Series AAmount undisclosed1 new
From a historical funding recordSEC filing: $6.1M sold, first sale Oct 2015
Founders and team
From Onkos Surgical's own website: 1 founder, 5 on the team.
Patrick TreacyFounder and Chief Executive Officer
- Arley PerezVice President, Product Development
- Bradly TylerSenior Vice President, Finance and Administration
- Gordon BallardSenior Vice President, Operations and Human Resources
- Len TokishVice President, Quality Assurance and Regulatory Affairs
- Gary ThomasChief Operating Officer
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
Canaan Partners/ 1315no 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 Onkos Surgical 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 Onkos Surgical
How much has Onkos Surgical raised?
Onkos Surgical has raised $85M across 4 rounds since 2015. One round did not disclose an amount, so the total is a floor.
When did Onkos Surgical last raise?
Onkos Surgical's most recent round, $37M, was in Aug 2026.
What was Onkos Surgical's biggest round?
Its most recent round, $37M in Aug 2026, is also its largest on record.
Who backed Onkos Surgical first?
Onkos Surgical's first round on record, in Oct 2015, was backed by 1315 Capital.
What stage is Onkos Surgical at?
Onkos Surgical's latest named round is a Debt, in Jan 2025.
Where is Onkos Surgical based?
Onkos Surgical is based in the United States.
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In the same sector, and raised in the last eighteen months.
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