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Catherine Williams

Operator

Catherine Williams is Chief Data Officer at Candid, a nonprofit data provider, where she serves as the organization's first-ever CDO following her appointment in November 2024. She holds a PhD in mathematics and has built a distinguished career at the intersection of data science and digital advertising, having previously served as Chief Data Scientist at Xandr, Chief Data & Marketplace Officer at AppNexus, and VP of Data & AI at Qualtrics. Williams is recognized as a senior leader who brings rigorous mathematical expertise and deep AdTech experience to data strategy and marketplace innovation.

Last updated Oct 18, 2026 by the ATDb Editorial Team

Role
Chief Data Officer
Company
Candid
Based
New York, New York, United States
Connections
3

AI-drafted from public sources8 sources cited

Years in industry
15 years

Bio

Catherine Williams is Chief Data Officer at Candid, a nonprofit data provider, where she serves as the organization's first-ever CDO following her appointment in November 2024. She holds a PhD in mathematics and has built a distinguished career at the intersection of data science and digital advertising, having previously served as Chief Data Scientist at Xandr, Chief Data & Marketplace Officer at AppNexus, and VP of Data & AI at Qualtrics. Williams is recognized as a senior leader who brings rigorous mathematical expertise and deep AdTech experience to data strategy and marketplace innovation.

Career

Roles with a cited source. All linked roles are in the Roles tab.

Expertise & education

Expertise

Programmatic AdvertisingConnected TV (CTV)Premium Inventory MonetizationPlatform IntegrationProduct StrategyAddressable AdvertisingSupply-Side Platforms (SSP)Digital Transformation

Speaking topics

Connected TV monetization and programmatic convergencePlatform transformation in AdTechPremium programmatic advertising strategyThe future of open internet advertising
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