United States · 
Who invested in American Fiber Systems?
American Fiber Systems's investors include Sierra Ventures, North Atlantic Capital and Lucent Venture Partners.
United States · Venture startup
Who invested in American Fiber Systems
One round we have observed, with the 3 investors 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.
Funding summaryUpdated 26 Oct 2026
$6.0Mraised across 1 round since 2003, from 1 source
- Latest round
- Venture, $6.0MAug 2003
- Investors
- 3
The rounds
- Aug 2003Venture$6.0M
From a historical funding record
The exit
ExitBuyerPriceWhen
AcquiredZayoundisclosedJun 2010
From historical deal records. Wrong? Tell us.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about American Fiber Systems
How much has American Fiber Systems raised?
American Fiber Systems has raised $6.0M across 1 round since 2003.
When did American Fiber Systems last raise?
American Fiber Systems's most recent round was a Venture of $6.0M in Aug 2003.
What was American Fiber Systems's biggest round?
Its most recent round, $6.0M in Aug 2003, is also its largest on record.
Who backed American Fiber Systems first?
American Fiber Systems's first round on record, in Aug 2003, was backed by Sierra Ventures, North Atlantic Capital and Lucent Venture Partners.
What stage is American Fiber Systems at?
American Fiber Systems's latest named round is a Venture, in Aug 2003.
Where is American Fiber Systems based?
American Fiber Systems is based in the United States.
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