Joanna Coles made it official.

The chief content officer of Hearst said via Instagram on Monday that she is leaving the company — confirming an exclusive report on The Post on Aug. 3.

In her Instagram post, Coles is seen walking at her treadmill desk in her corner office in Hearst Tower in Midtown Manhattan. The 56-year-old executive says her days at the company have come to an end.

“My route is being recalculated, it’s time for a new adventure,” she said. “I’m going take some time off, play some tennis. I threaten to talk to my teenage children. They remain unmoved by that, and I will have some news in the fall.”

Coles had served as chief content officer of Hearst since 2016. Prior to that, she held the role of editor-in-chief at Cosmopolitan from 2012 to 2016. She joined Hearst in 2006, as editor-in-chief of Marie Claire.

During her tenure at Hearst, she appeared as a frequent guest on MSNBC’s “Morning Joe” and “CBS This Morning” — and earlier in her career was a judge on Lifetime’s “Project Runway.”

Coles also helped mint partnerships with Snapchat and Airbnb and played a large role in the development of TV shows like “The Bold Type” on Freeform and the now-canceled “So Cosmo,” a reality show on E! hosted by Coles.

The end of Coles’ 12-year tenure at Hearst comes on the heels of the promotion of digital exec Troy Young to the role of president of Hearst Magazines.