Or Offer

Or Offer is the founder and CEO of Similarweb, the digital intelligence and market research platform he launched in 2007. Similarweb provides web traffic and engagement data used by advertisers, marketers, publishers and investors to benchmark competitors, plan media buys and understand audience behavior — making Offer a significant figure in the data infrastructure that underpins digital advertising and marketing strategy. Under Offer's leadership, Similarweb grew from a consumer browser tool into an enterprise-grade platform serving thousands of businesses globally. He led the company through major fundraising rounds totaling hundreds of millions of dollars and took Similarweb public on the New York Stock Exchange in May 2021 under the ticker SMWB. The IPO valued the company at approximately $1.6 billion, cementing its position as a leading source of digital measurement data. Offer has built Similarweb into a platform that competes with and complements tools used across the advertising and media ecosystem, including for competitive intelligence, audience analysis and digital media planning. He is widely regarded as a builder and operator who scaled a data company from Israel into a globally recognized brand.

Last updated Oct 25, 2026 by ATDb automated enrichment