Mr. Kilar fashioned himself as a disrupter inclined to break with the status quo in the pursuit of innovation. He became the chief executive of WarnerMedia in April 2020. He previously had started a video streaming company called Vessel and had managed Hulu, where he gained a reputation for thwarting the desires of the entrenched media executives overseeing the company.HBO Max made a lackluster debut just two months after his arrival at WarnerMedia. By August, Mr. Kilar dismissed Bob Greenblatt and Kevin Reilly, two longtime television executives who were in charge of the streaming service’s programming. Mr. Kilar also …
