United States · 
Who invested in Capstone II?
Capstone II's investors include Lime Rock Partners.
United States · Venture startup
Who invested in Capstone II
One round we have observed, with the one investor named in it. 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 7 Nov 2026
$100Mraised across 1 round since 2014, from 1 source
- Latest round
- Venture, $100MDec 2014
- Investors
- 1
The rounds
- Dec 2014
Everyone who backed them
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Quick answers about Capstone II
How much has Capstone II raised?
Capstone II has raised $100M across 1 round since 2014.
When did Capstone II last raise?
Capstone II's most recent round was a Venture of $100M in Dec 2014.
What was Capstone II's biggest round?
Its most recent round, $100M in Dec 2014, is also its largest on record.
Who backed Capstone II first?
Capstone II's first round on record, in Dec 2014, was backed by Lime Rock Partners.
What stage is Capstone II at?
Capstone II's latest named round is a Venture, in Dec 2014.
Where is Capstone II based?
Capstone II is based in the United States.
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