United States · Series D startup

Who invested in ZEFR

8 rounds we have observed, with the 13 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 & Adtech

Funding summaryUpdated 26 Oct 2026

$60Mraised across 8 rounds since 2009, from 8 sources

$1.4MVenture$150KDebt$3.0MSeries A$7.0MSeries B$19MSeries C$278KSeries D$30MSeries D

Latest round: Series D, $30MFeb 2014
Step-upi: 107.9×
Investors: 13

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.

20102011201220132014

$1.4MVenture?Seed$150KDebt$3.0MSeries A$7.0MSeries B$19MSeries C$278KSeries D$30MSeries D

First round: Venture, $1.4M
Biggest round: $30M
Usual gap between rounds: 5 months

The rounds

Feb 2014
Series D$30M1 new4 returning
From a historical funding recordSEC filing: $30M sold, first sale Feb 2014
Jan 2013
Series D$278K
No investor was named in the report.
Reported by sec.govSEC filing: $278K sold, first sale Dec 2012
Aug 2012
Series C$19M2 new4 returning
Reported by techcrunch.com
Jul 2011
Series B$7.0M2 new6 returning
Reported by techcrunch.com
Nov 2010
Series A$3.0M7 new
Reported by finsmes.com
Jun 2010
Debt$150K
No investor was named in the report.
Reported by sec.gov
Jan 2010
SeedAmount undisclosed1 new
- Launchpad LA
From a historical funding record
Nov 2009
Venture$1.4M
No investor was named in the report.
From a historical funding record

Founders and team

From ZEFR's own website and the SEC filings it signed: 2 founders, 18 on the team.

Rich RaddonCo-CEO/Co-Founder

Zach JamesCo-CEO/Co-Founder

Andrew SerbyChief Commercial Officer
Jon MorraChief AI Officer
Ryan BarkerChief Technology Officer
Andreia ToddVP, Global Brand Marketing
Brandon FolkmanVP, Technical Operations
Casey CohenVP, Platform Development
Daniel OakinsVP, Business Development
Igor ZalarVP, Application Engineering
Jannet KimSVP, Head of Account Services & Ad Operations
Kelsey GariganEVP, Head of North American Sales
Michael VillalobosVP, Engineering
Or LeviVP, Data Science
Robert WollnerGlobal Head of Agency Partnerships
Sebastian VelezVP, Research & Insights
Varkey JamesHead of Office Administration
Wesley TannerVP, Data Engineering & Architecture
Richard RaddonExecutive Officer, Directori
Zacharias JamesExecutive Officer, Directori

On the board, as filediDennis PhelpsMark TerbeekRoss LevinsohnSean FlynnSteve KrauszYair Landau

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.

Venture2009Seed2010Debt2010Series A2010Series B2011Series C2012Series D2013Series D2014

First Round Capital

Shasta Ventures

Softtech VC

U.S. Venture Partners

Naval Ravikant

MK Capital

TGM venturesRichmond Park PartnersJeff Kearl

Felicis

Everyone who backed them

First Round CapitalVC firm4rounds

Shasta VenturesVC firm4rounds

Softtech VCVC firm3rounds

U.S. Venture PartnersVC firm2rounds

Naval RavikantVC firm2rounds

MK CapitalVC firm2rounds

TGM venturesAngel network2rounds

Richmond Park PartnersInvestment bank2rounds

Jeff KearlVC firm2rounds

FelicisVC firm1round

IVP (Institutional Venture Partners)Growth equity1round

Launchpad LAAccelerator1round

Gordon RubensteinAngel1round

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

Also claim to have backed them

This firm lists ZEFR as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.