United States · Series D startup

Who invested in Counterpane Internet Security

One round we have observed, with the 7 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

$20Mraised across 1 round since 2003, from 1 source

Latest round
Series D, $20MJan 2003
Investors
7
See who backed them

The rounds

  1. Jan 2003

The exit

ExitBuyerPriceWhen
AcquiredBritish Telecom Group (BT Group)undisclosedOct 2006

From historical deal records. Wrong? Tell us.

Everyone who backed them

AccelVC firm1round
Comcast VenturesCorporate VC1round
DellGrowth equity1round
Symphony Technology GroupPrivate equity1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about Counterpane Internet Security

Who invested in Counterpane Internet Security?

Counterpane Internet Security's investors include Accel, Bessemer Venture Partners, Morgan Stanley Investment Management, Comcast Ventures and Meritech Capital Partners, and 2 more on record.

How much has Counterpane Internet Security raised?

Counterpane Internet Security has raised $20M across 1 round since 2003.

When did Counterpane Internet Security last raise?

Counterpane Internet Security's most recent round was a Series D of $20M in Jan 2003.

What was Counterpane Internet Security's biggest round?

Its most recent round, $20M in Jan 2003, is also its largest on record.

Who backed Counterpane Internet Security first?

Counterpane Internet Security's first round on record, in Jan 2003, was backed by Accel, Bessemer Venture Partners and Morgan Stanley Investment Management and 4 others.

What stage is Counterpane Internet Security at?

Counterpane Internet Security's latest named round is a Series D, in Jan 2003.

Where is Counterpane Internet Security based?

Counterpane Internet Security is based in the United States.

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