A
Andrew Buckman
Chief Executive Officer at Publisher Collective
Leading global operations at Index Exchange, one of the most significant independent ad exchanges, and championing open programmatic infrastructure for premium publishers.
Last updated May 30, 2026 by the ATDb Editorial Team · Connections updated May 31, 2026
Bio
Andrew Buckman is Chief Executive Officer of Publisher Collective, appointed in January 2026. A programmatic sell-side veteran, he previously led EMEA for OpenX, was CEO of Sublime, and held senior roles across the open-web advertising ecosystem including Index Exchange.
Previous Roles
Managing Director, EMEA
Index Exchange (prior to COO role)
Expertise
Programmatic AdvertisingSupply-Side Platforms (SSP)Header BiddingPublisher MonetizationAd Exchange OperationsGlobal Business OperationsOpen Web AdvertisingIdentity and Privacy Solutions
Notable Achievements
- Scaled Index Exchange's global operations as COO, supporting billions of daily programmatic ad transactions
- Expanded Index Exchange's international presence and publisher partnership network
- Helped position Index Exchange as a leading independent alternative to walled garden ad ecosystems
Speaking Topics
Independent programmatic infrastructurePublisher monetization strategiesThe future of the open webSupply-side platform innovation
Connections