Investor and Board Member at 1stdibs (Board)
Leading DoubleClick as CEO through its $3.1 billion acquisition by Google, establishing the ad server infrastructure that underpins modern programmatic advertising.
Last updated Mar 28, 2026 by AI Enrichment
David Rosenblatt is one of the most consequential figures in the history of digital advertising, best known for leading DoubleClick as CEO during the period that cemented ad serving as the backbone of the open web. Under his leadership, DoubleClick became the dominant ad server and data platform for publishers and advertisers alike, culminating in Google's landmark $3.1 billion acquisition of the company in 2008 — a deal that reshaped the competitive landscape of digital advertising for decades. His tenure at DoubleClick placed him at the center of the industry's transition from direct-sold display advertising toward the automated, data-driven ecosystem that would become programmatic advertising. Following the Google acquisition, Rosenblatt transitioned from operator to investor and executive, most notably serving as CEO of 1stdibs, the luxury online marketplace, where he applied his technology and scaling expertise to a high-end e-commerce context. He led 1stdibs through significant growth and its eventual IPO on Nasdaq in 2021, demonstrating his ability to translate AdTech operational discipline into broader technology leadership. He has remained on the 1stdibs board following his CEO tenure. Rosenblatt is widely regarded as a dealmaker and operator whose fingerprints are on the structural architecture of modern digital advertising. He has been active as an investor and board member across technology and AdTech-adjacent companies, leveraging his deep network from the DoubleClick and Google era. His career represents a rare arc from building foundational AdTech infrastructure to scaling consumer marketplaces, making him a respected voice across both worlds.
1stdibs (2013-2022)
DoubleClick (2005-2008)
DoubleClick (2002-2005)
DoubleClick (1997-2002)