United States · 
Who invested in Transonic Combustion?
Transonic Combustion's investors include Khosla Ventures, Venrock, Rustic Canyon Partners and Saints Capital.
20082009201020112012
?Venture$32MSeries DUnited States · Series D startup
Who invested in Transonic Combustion
2 rounds we have observed, with the 4 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
$32Mraised across 2 rounds since 2007, from 2 sources
- Latest round
- Series D, $32MNov 2012
- 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
- Venture May 2007
- Biggest round
- $32M Series D · Nov 2012
- Between rounds
- 5.5 years from the last two
The rounds
- Nov 2012
- May 2007VentureAmount undisclosed
No investor was named in the report.
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.
Everyone who backed them
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Quick answers about Transonic Combustion
How much has Transonic Combustion raised?
Transonic Combustion has raised $32M across 2 rounds since 2007. One round did not disclose an amount, so the total is a floor.
When did Transonic Combustion last raise?
Transonic Combustion's most recent round was a Series D of $32M in Nov 2012.
What was Transonic Combustion's biggest round?
Its most recent round, $32M in Nov 2012, is also its largest on record.
Who backed Transonic Combustion first?
Transonic Combustion's first round on record, in Nov 2012, was backed by Khosla Ventures, Venrock and Rustic Canyon Partners and 1 others.
What stage is Transonic Combustion at?
Transonic Combustion's latest named round is a Series D, in Nov 2012.
Where is Transonic Combustion based?
Transonic Combustion is based in the United States.
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