About us

Celtra empowers agencies, media suppliers and brand leaders with the leading creative technology for data-driven brand display advertising across all screens.

  • Ads built
    using AdCreator

  • Employees

  • Countries Where
    Our Ads Are Run


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Celtra founded!
Seed funding:
RSG Capital
AdCreator’s predecessor
introduced - Celtra.ADV
at Ad:Tech
Series A funding:
GrandBanks Capital,
Fairhaven Capital Partners
AdCreator 2.0 announced
at the MMA Forum
Rich Media Post for
Facebook and Twitter
Bronze Stevie
Most Innovative Tech
Company of the Year
Innovative Mobile
Technology of the Year
Industry’s first
Store Locator
AdCreator 3
for mobile advertisers
Bronze Stevie
Best New Product
Reached 1 Billion
monthly impressions
Series B funding:
Fairhaven Capital Partners,
GrandBanks Capital,
SoftBank Capital
All 5 IAB Mobile
Rising Stars supported
Silver Stevie
Best New Product
OnMobile Top 100
Smart Video Ad Formats
with groundbreaking
video technology
iMedia ASPY Award
Best Ad Product Innovation
OnMedia Top 100
Reached 5 Billion
monthly impressions
Mihael Mikek Mihael Mikek
Chief Executive Officer
& Co-founder
Matevz Klanjsek Matevz Klanjsek
Chief Product Officer
& Co-founder
Maja Drolec Maja Drolec
Chief Finance Officer
& Co-founder
Jaka Jancar Jaka Jancar
Chief Technology
Todd Taplin Todd Taplin
EVP Global Sales,
Strategy and Services

Upcoming Events

July 2, 2015
London, UK
AOP Digital Publishing Awards
July 13-14, 2015
San Fransisco, CA
VentureBeat: MobileBeat
July 28, 2015
Chicago, IL
Mobile Media Summit
September 2, 2015
Manchester, UK
IAB Digital Britain Conference

Our offices

  • Headquarters 545 Boylston Street, 11th fl.
    Boston, MA 02116
  • San Francisco 225 Bush Street, Suite 1805
    San Francisco, CA 94104
  • Los Angeles 4223 Glencoe Ave. Suite 101A
    Marina del Rey, CA 90292
  • Chicago 320 West Ohio Street, Suite 35
    Chicago, IL 60654
  • New York 915 Broadway, Suite 1105
    New York, NY 10010
  • London 56a Poland Street
    London, W1F 7NN, UK
  • Ljubljana Kongresni trg 3
    1000 Ljubljana, Slovenia
  • Tokyo Meguro G-Building 7F
    1-4-16 Meguroichome
    Tokyo 153-0063, Japan

Our Investors

SoftBank Capital
GrandBank Capital
Fairhaven Capital
RSG Capital