Sarah Personette has resigned as Twitter’s top ad exec, following Elon Musk’s acquisition of Twitter.

Personette, a long-time Madison Avenue media executive before joining Twitter two years ago, most recently served as chief customer officer.

In a series of tweets this morning, Personette said she resigned Friday and her “work access was officially cut off” Monday night.

“Business is the most personal thing and you all made that feel true,” Personette added.

While the news is not shocking given Musk’s rapid shakeup of Twitter’s management team, it comes as many in the ad industry already are taking a pessimistic view of his move to take Twitter private, remove the team responsible for the platform’s brand-safety controls, making questionable tweets and re-tweets on the platform, and generally sending mixed signals about its future safety as a digital media platform.

As recently as last Thursday, the day before her resignation, Personette had tweeted that she “had a great discussion with @elonmusk” — adding: “Our continued commitment to brand safety for advertisers remains unchanged. Looking forward to the future!”

Personette joined Twitter in 2018 after a brief stint as COO of Refinery29, and three years before that as vice president of global business marketing at Facebook.

Prior to that, she served as president of the IPG Mediabrands UM unit, and has held senior positions at Spark Foundry, MEC and Starcom.