• AT&T

Heather Fessler Devendorf

Lead Market Research And Analysis

Heather Fessler Devendorf is an experienced marketing professional with a strong background in market research and analysis. Currently serving as Lead Market Research and Analysis at AT&T since August 2025, previously held the role of Senior Director Client Services at Morning Consult, where responsibilities included leading a team to deliver strategic insights to Fortune 500 clients. At TaylorMade Golf Company, Heather built and managed a global consumer insights program to inform strategic brand decisions. Prior experience includes Senior Research Manager at Ipsos, where Heather directed large-scale quantitative research for various industries, and Research Executive at Insights, managing comprehensive brand and advertising research. Heather holds a Bachelor's Degree in Marketing from Arizona State University.

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