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General Information


1633 Broadway
5th Floor
New York, NY, 10019


Chief Executive Officer
VP Reaserch & Development
VP Finance
VP Business Development
VP Human Resources
Board Director
Chief Marketing Officer


TOTAL $29.9M
Seed, 3/2006
Jon Medved
Daniel Ciporin
Series A, 2/2007
Dawntreader Ventures
Series B, 9/2007
Canaan Partners
J.P. Morgan Securities Inc.
Dawntreader Ventures
Series C, 5/2009
Evergreen Venture Partners
Canaan Partners
Dawntreader Ventures
J.P. Morgan Securities Inc.
SVB Financial Group
Venture Round, 5/2011
Seed, 12/2011
Seed, 1/2012


Peer39 by Sizmek

Peer39 by Sizmek offers data that is contextual, which means we derive the actual meaning of content, not simply whether or not a blocked keyword appears. This allows for the most precise results for content classification, delivering the most effective brand safety, quality and targeting solutions by processing every page individually.

We preemptively target towards content that indexes well against your defined audience, and preemptively protect by blocking inappropriate content - based on actual content meaning.

We have solutions designed for the unique needs of customers throughout the programmatic space. Agencies and direct advertisers get the best, most sophisticated and most customizable brand protection, content targeting and content quality solution available. Publishers receive greater insight into the performance of content based on content meaning, not site/section levels, as well as the ability to directly sell custom brand safety to advertiser clients.

Attributes are available on all major buying platforms.

Recent Milestones

  • Dollar
    Peer39 by Sizmek received $15k in Seed funding. (1/24/12)
    Posted 9/3/13 at 11:02pm via
  • Dollar
    Peer39 by Sizmek received $2.5M in Seed funding. (12/12/11)
    Posted 9/12/13 at 3:43am via
  • Dollar
    Peer39 by Sizmek received $5.2M in Venture Round funding. (5/19/11)
    Posted 5/21/11 at 1:13am via
  • Check
    Peer39 by Sizmek — For the first time in the industry, brands are able to leverage page-level intelligence in real time, thanks to a one-of-a-kind partnership between MediaMath and Peer39. Peer39’s semantic ad targeting technology has been integrated into MediaMath’s T (4/6/11)
    Posted 4/9/11 at 5:13pm via
  • Check
    Peer39 by Sizmek — Peer39 announces that it is going beyond semantic-based categorization to provide unprecedented visibility and control of the online advertising environment. With the addition of two additional channels of attributes, Quality and Safety, advertisers parti (3/7/11)
    Posted 4/9/11 at 5:13pm via
  • Check
    Peer39 by Sizmek — TRAFFIQ, the digital media workflow tool for agencies, announced today that Peer39 will be its preferred semantic targeting partner for the TRAFFIQ Trading Desk. (2/23/11)
    Posted 4/9/11 at 5:13pm via
  • Check
    Peer39 by Sizmek — Peer39 today announced that it has been chosen by AlwaysOn as one of the OnMedia Top 100 winners. Inclusion in the OnMedia 100 signifies leadership amongst its peers and game-changing approaches and technologies that are likely to disrupt existing markets (1/18/11)
    Posted 4/9/11 at 5:13pm via
  • Check
    Peer39 by Sizmek — Peer39 Selected by AlwaysOn as an OnMedia 100 Winner. This award recognizes the cutting edge technology companies that have emerged as leaders in the worlds of advertising, media, marketing, branding, and publishing. (1/18/11)
    Posted 4/8/11 at 7:43am via
  • Check
    Peer39 by Sizmek — REVV for publishers Yield Optimization Platform armed with Peer39's semantic algorithms to drive brand safety, efficiency and revenue performance of ad targeting. (12/14/10)
    Posted 12/15/10 at 9:36am via
  • Check
    Peer39 by Sizmek — Peer39 Semantic Targeting Data Maximizes Performance and Brand Safety on the AppNexus Real-Time Ad Platform (9/15/10)
    Posted 9/15/10 at 6:02am via
  • Check
    Peer39 by Sizmek — Peer39 named to Lead411's New York City Hot 125 (8/31/10)
    Posted 9/27/10 at 10:31am via
  • Check
    Peer39 by Sizmek — Peer39 Adds Digital Advertising Executive Alex White as VP Product and Account Management (7/8/10)
    Posted 7/8/10 at 12:45pm via
  • Check
    Peer39 by Sizmek — Peer39 Appoints Andy Ellenthal as Chief Executive Officer (4/9/10)
    Posted 4/9/10 at 5:18am via
  • Check
    Peer39 by Sizmek — Peer39 Named in Lead411's "New York City Hot 125" Awards (3/23/10)
    Posted 3/23/10 at 7:05am via
  • Check
    Peer39 by Sizmek — Peer39 Leverages Akamai to Bring the Speed to Customer Success (3/1/10)
    Posted 3/1/10 at 8:50am
  • Check
    Peer39 by Sizmek — Emmy Award Winning Jesse Dylan Joins Peer39 Advisory Board (1/14/10)
    Posted 1/14/10 at 6:54am



This video was originally published on Beet.TV

Added: 2/12/09




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  1. Citation Needed [add]
  2. topics * Bing * Google * New York Times * All Topics » * WAP * BlackBerry * Twitter twitter * Alerts & RSS Alerts & RSS Online Ad Startup Peer39 Gets $3 Million Funding ( [edit]
  3. Natural language advertising coming: Peer39 receives $8.2M ( [edit]
  4. Another $10.5M Unloads on Peer39's Dock ( [edit]
  5. Peer39 Raises Another $5 Million for Ad Targeting That Promises Not to Invade Your Privacy ( [edit]
  6. SEC ( [edit]
  7. SEC ( [edit]
  8. MIT's Technology Review: Ten Web Startups to Watch ( [edit]
    Editor & Publisher ( [edit]
    Newsweek Uses Semantics to Boost CPM ( [edit]
    Peer39 Updates Semantic Advertising Platform ( [edit]
    Peer39 Leveraging Semantics to Help Publishers and Ad Platforms Capitalize on Display Ad Inventory [edit]
    Amiad Solomon, Peer39 Founder and CEO, Elected to SIIA Content Division Board ( [edit]
    AlwaysOn Reveals OnMedia 100 Award Winners ( [edit]
    Citation Needed [add]
    Citation Needed [add]
    Lead411 Launches Its "New York City Hot 125" Awards ( [edit] [edit] [edit] [edit]
    "New York City Hot 125" ( [edit]
    Peer39 Partners With the Rubicon Project to Empower Premium Web Publishers With Semantic Intelligence to Capture the True Value of Inventory ( [edit]
    AlwaysOn Reveals OnMedia 100 Award Winners ( [edit]
    Peer39 Selected by AlwaysOn as an OnMedia 100 Winner ( [edit]
    TRAFFIQ and Peer39 Partner to Offer Page-Level Semantic Analysis in Real Time ( [edit]
    Peer39 Add Quality And Safety (QoS) Ad Serving ( [edit]
    Peer39 And MediaMath Eye Page Content ( [edit]
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Last Edited 4/8/14

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