United States · Series D startup

Who invested in Tandem Diabetes Care

4 rounds we have observed, with the 4 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 31 Oct 2026

$114Mraised across 4 rounds since 2008, from 4 sources

$13MSeries B$52MSeries C$12MDebt$36MSeries D
Latest round
Series D, $36MSept 2012
Biggest round
$52MSeries C · Jan 2010
Step-upi
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Investors
4
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2009201020112012
$13MSeries B$52MSeries C$12MDebt$36MSeries D
First round
Series B, $13M
Jul 2008
Biggest round
$52M
Series C · Jan 2010
Usual gap between rounds
18 months
the median of 3

The rounds

  1. Sept 2012
    Series D$36M1 returning

    Reported by sec.govSEC filing: $36M sold, first sale Aug 2012

  2. Aug 2011
    Debt$12M

    No investor was named in the report.

    Reported by sec.govSEC filing: $12M sold, first sale Aug 2011

  3. Jan 2010
    Series C$52M1 new

    Reported by fis.dowjones.comSEC filing: $52M sold, first sale May 2009

  4. Jul 2008
    Series B$13M3 new

    From a historical funding record

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.

Series B2008Series C2010Debt2011Series D2012Delphi VenturesTPGDomain AssociatesSecond Technology Capital Investors

The exit

ExitListingPriceWhen
IPONASDAQ:TNDM$138MNov 2008

From historical deal records. Wrong? Tell us.

Everyone who backed them

Delphi VenturesVC firm2rounds
TPGPrivate equity1round
Domain AssociatesVC firm1round
Second Technology Capital Investorsno record of our own yet1round

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

Quick answers about Tandem Diabetes Care

Who invested in Tandem Diabetes Care?

Tandem Diabetes Care's investors include Delphi Ventures, TPG, Domain Associates and Second Technology Capital Investors.

How much has Tandem Diabetes Care raised?

Tandem Diabetes Care has raised $114M across 4 rounds since 2008.

When did Tandem Diabetes Care last raise?

Tandem Diabetes Care's most recent round was a Series D of $36M in Sept 2012.

What was Tandem Diabetes Care's biggest round?

Tandem Diabetes Care's largest round on record is $52M (Series C), in Jan 2010.

Who backed Tandem Diabetes Care first?

Tandem Diabetes Care's first round on record, in Jul 2008, was backed by TPG, Domain Associates and Second Technology Capital Investors.

What stage is Tandem Diabetes Care at?

Tandem Diabetes Care's latest named round is a Series D, in Sept 2012.

Where is Tandem Diabetes Care based?

Tandem Diabetes Care is based in the United States.

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