United States · Funded startup

Who invested in MediaMath

9 rounds we have observed, with the 9 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.

Advertising & AdtechMartech

Valuation: $1.0B, Apr 2022

Funding summaryUpdated 26 Oct 2026

$605Mraised across 9 rounds since 2008, from 9 sources

$10MSeries A$2.5MDebt$377KVenture$14MSeries B$74MSeries C$105MDebt$175MRound$225MRound

Latest round: Round, $225MJul 2018
Step-upi: 1.3×
Investors: 9 (1 led)

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.

200820102012201420162018

?Series A$10MSeries A$2.5MDebt$14MSeries B$74MSeries C$105MDebt$175MRound$225MRound

First round: Series A
Biggest round: $225M
Usual gap between rounds: 17 months

The rounds

Jul 2018
Round$225M1 new
- Searchlight Capital Partners
Reported by FinSMEsSEC filing: $126M sold, first sale Jun 2018
Jun 2017
Round$175M1 new
- Goldman Sachs/ Santander BankLead
Reported by TechCrunch
Jun 2014
Debt$105M
No investor was named in the report.
From a historical funding recordSEC filing: $74M sold, first sale May 2014
May 2014
Series C$74M3 new1 returning
From a historical funding recordSEC filing: $74M sold, first sale May 2014
Mar 2011
Series B$14M2 returning
- QED Investors
- European Founders Fund
Reported by techcrunch.comSEC filing: $9.0M sold, first sale Feb 2011
Apr 2010
Venture$377K
No investor was named in the report.
Reported by sec.govSEC filing: $377K sold, first sale Apr 2010
Aug 2009
Series A$10M2 new1 returning
Reported by freshnews.comSEC filing: $6.6M sold, first sale Jul 2009
Aug 2009
Debt$2.5M1 new3 returning
Reported by freshnews.comSEC filing: $6.6M sold, first sale Jul 2009
Mar 2008
Series AAmount undisclosed1 new
- QED Investors
From a historical funding record

Founders and team

From the SEC filings it signed: 5 on the team.

Ari BuchalterExecutive Officeri
Brian MillerExecutive Officeri
Jeannie MunExecutive Officeri
Jeffrey DavisExecutive Officeri
Joseph ZawadzkiExecutive Officer, Director, Promoteri

On the board, as filediDan MacKeiganErik RasmussenJeffrey RayportMichael BarrettNigel Morris

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 A2009Debt2009Venture2010Series B2011Series C2014Debt2014Round2017Round2018

QED Investors

Safeguard ScientificsEuropean Founders FundGoldman Sachs/ Santander BankL

SVB Capital

Catalyst Investors

Spring Lake Equity Partners

Searchlight Capital Partners

Observatory Capital

Everyone who backed them

QED InvestorsVC firm4rounds

Safeguard ScientificsPrivate equity3rounds

European Founders FundInvestment firm3rounds

Goldman Sachs/ Santander Bankno record of our own yet1round, led 1

SVB CapitalVC firm1round

Catalyst InvestorsPrivate equity1round

Spring Lake Equity PartnersPrivate equity1round

Searchlight Capital PartnersPrivate equity1round

Observatory CapitalVC firm1round

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

Also claim to have backed them

These 5 firms list MediaMath as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

Hyde Park AngelsAngel networkPer its own site

Blue CollectiveVC firmPer its own site

FireStarter FundVC firmPer its own site

Progress VenturesCorporate VCPer its own site

HPAVC firmPer its own site

Quick answers about MediaMath

Who invested in MediaMath?

MediaMath's investors include QED Investors, Safeguard Scientifics, European Founders Fund, Goldman Sachs/ Santander Bank and SVB Capital, and 4 more on record.