Netflix fired three senior executives in its film marketing department after a colleague discovered their Slack conversations about top leaders and reported them to the company, according to The Hollywood Reporter. In the messages, the executives criticized their bosses, including Jonathan Helfgot, the company's vice president of original films marketing, and Bozoma Saint John, its chief marketing officer, according to the report. 

Netflix has made headlines for its culture of "radical transparency," which includes encouraging managers to give blunt feedback and to speak openly about the reasons for firings. 

Helfgot argued that venting to colleagues is normal and was "extremely reluctant" to terminate the employees, according to THR, but was pressured by his own bosses to do so. Because these employees were grousing in private, Netflix co-CEO Ted Sarandos considered their conversation "destructive to the fabric of the company" and therefore a fireable offense, THR reported, citing a source familiar with his thinking.

According to the report, the fired executives made up about half of the company's staff at that level.