Sam Masaru Sekoff, literary manager at Entertainment 360, dies at 33

Sam Masaru Sekoff, a literary manager at Entertainment 360, died unexpectedly on July 14 in Los Angeles, the date that also marked his 33rd birthday, according to an announcement shared publicly by the agency and reported by Deadline. The report said Sekoff was found dead in his Los Angeles home and that the death was being treated as an apparent suicide, with authorities handling the matter.

Deadline reported that Sekoff’s death occurred in the home where he lived, and that his passing was not preceded by a public announcement from Entertainment 360 beyond its internal communication to staff and colleagues. The agency did not immediately issue broad public details about the circumstances, and the published report emphasized the need to allow coworkers time to grieve.

Entertainment 360 said it was withholding further information out of respect for Sekoff and to give colleagues time after his death, according to Deadline. The agency’s approach reflects the customary care representation firms often use when a staff member dies suddenly, especially when a death is under investigation.

Sekoff worked as a literary manager, a role that typically places an entertainment firm in direct contact with authors and rights holders as books and related projects move through development, publishing negotiations, and adaptation pathways. The report did not list specific client rosters or particular deals tied to Sekoff’s work, and no such details were included in the coverage cited by Deadline.

The representation community also has to navigate the operational impact of such a loss, including ensuring that ongoing submissions, author communications, and project tracking continue without disruption. While Deadline described the passing as “unexpectedly,” the report did not specify how the agency planned to reassign active matters or whether any immediate procedural changes were already in place.

Entertainment 360’s statement and the Deadline reporting position Sekoff’s death as a personal and professional loss for colleagues in Hollywood and the broader literary management world. As with any death being investigated, additional facts may come from official sources after authorities complete their review.

For now, public information remains limited to the reported date, location, age, and the characterization of the death as apparent suicide, as stated in the Deadline report. Further updates would likely depend on confirmation by law enforcement or other authorities and on the agency’s decision about when to share more about Sekoff’s life and work.