United States · Series E startup
3 rounds we have observed, with the 11 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
$34Mraised across 3 rounds since 2003, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Selby Venture Partners
W Capital Partners
Pacifica Fund
Glenbrook PartnersFrom a historical funding record
Reported by baymicrosystems.com
In-Q-Tel
Alliance VentureSelby Venture PartnersFrom a historical funding record
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
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Bay Microsystems's investors include Selby Venture Partners, Needham Capital Partners, In-Q-Tel, Alliance Venture and Thomas Weisel Venture Partners, and 6 more on record.
Bay Microsystems has raised $34M across 3 rounds since 2003.
Bay Microsystems's most recent round was a Series E of $16M in Jul 2007.
Its most recent round, $16M in Jul 2007, is also its largest on record.
Bay Microsystems's first round on record, in Nov 2003, was backed by In-Q-Tel, Alliance Venture and Selby Venture Partners and 2 others.
Bay Microsystems's latest named round is a Series E, in Jul 2007.
Bay Microsystems is based in the United States.
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United States · 