United States · 
Who invested in Zayo?
Zayo's investors include Battery Ventures, Oak Investment Partners, Columbia Capital, Hercules Technology Growth Capital and Centennial Ventures, and 3 more on record.
2008
$225MGrowth$85MDebtUnited States · Funded startup
Who invested in Zayo
2 rounds we have observed, with the 8 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
$310Mraised across 2 rounds since 2007, from 2 sources
$225MGrowth$85MDebt
- Latest round
- Debt, $85MNov 2007
- Biggest round
- $225MGrowth · Aug 2007
- Investors
- 8
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Growth, $225M Aug 2007
- Biggest round
- $225M Growth · Aug 2007
- Between rounds
- 3 months from the last two
The rounds
- Nov 2007
- Aug 2007Growth$225M5 new
Reported by deals.venturebeat.com
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
Hercules Technology Growth CapitalInvestment firm1round
Centennial VenturesGrowth equity1round
CIT GroupCorporate VC1round
CoBankInvestment firm1round
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 2 firms list Zayo as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Zayo
How much has Zayo raised?
Zayo has raised $310M across 2 rounds since 2007.
When did Zayo last raise?
Zayo's most recent round was a Debt of $85M in Nov 2007.
What was Zayo's biggest round?
Zayo's largest round on record is $225M (Growth), in Aug 2007.
Who backed Zayo first?
Zayo's first round on record, in Aug 2007, was backed by Battery Ventures, Oak Investment Partners and Columbia Capital and 2 others.
What stage is Zayo at?
Zayo's latest named round is a Debt, in Nov 2007.
Where is Zayo based?
Zayo is based in the United States.
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