Who invested in WEbook?
WEbook's investors include Greylock and Vertex Ventures China.

United States · Series A startup
2 rounds we have observed, with the 2 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 15 Nov 2026
$5.0Mraised across 2 rounds since 2007, from 2 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
WEbook's investors include Greylock and Vertex Ventures China.
WEbook has raised $5.0M across 2 rounds since 2007. One round did not disclose an amount, so the total is a floor.
WEbook's most recent round was a Series A of $5.0M in Sept 2008.
Its most recent round, $5.0M in Sept 2008, is also its largest on record.
WEbook's first round on record, in Sept 2008, was backed by Greylock and Vertex Ventures China.
WEbook's latest named round is a Series A, in Sept 2008.
WEbook is based in the United States.
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