Change Job Owner

USE [msdb]
GO
EXEC msdb.dbo.sp_update_job @job_id=N'9b72dfd8-0845-4632-8ffb-43d35e723ace', @owner_login_name=N'sa'
GO

--select * from msdb.dbo.sysjobs where job_id=N'9b72dfd8-0845-4632-8ffb-43d35e723ace'