United States · 
Who invested in QuantumShift Communications?
QuantumShift Communications's investors include Mayfield Fund, Texas Pacific Group and Thomas Weisel Partners.
20002001
$19MSeries B$32MSeries CUnited States · Series C startup
Who invested in QuantumShift Communications
Funding summaryUpdated 26 Oct 2026
$51Mraised across 2 rounds since 1999, from 2 sources
$19MSeries B$32MSeries C
- Latest round
- Series C, $32MDec 2001
- Step-upi
- 1.7×
- Investors
- 3
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series B, $19M Oct 1999
- Biggest round
- $32M Series C · Dec 2001
- Between rounds
- 2.2 years from the last two
The rounds
- Dec 2001
- Oct 1999
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.
The exit
ExitBuyerPriceWhen
AcquiredvCom SolutionsundisclosedJan 2004
From historical deal records. Wrong? Tell us.
Everyone who backed them
Texas Pacific GroupInvestment firm1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about QuantumShift Communications
How much has QuantumShift Communications raised?
QuantumShift Communications has raised $51M across 2 rounds since 1999.
When did QuantumShift Communications last raise?
QuantumShift Communications's most recent round was a Series C of $32M in Dec 2001.
What was QuantumShift Communications's biggest round?
Its most recent round, $32M in Dec 2001, is also its largest on record.
Who backed QuantumShift Communications first?
QuantumShift Communications's first round on record, in Oct 1999, was backed by Mayfield Fund and Texas Pacific Group.
What stage is QuantumShift Communications at?
QuantumShift Communications's latest named round is a Series C, in Dec 2001.
Where is QuantumShift Communications based?
QuantumShift Communications is based in the United States.
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