The initiatormanager.log shows the following class.
06/06/2020 00:00:00.026+0000 5 Core Mailbox.outbound.CybInitiatorManager.releaseInitiator[:871] - 1234745.31975
4/DE_R12.1/MAIN releasing instance of initiator of class CONTROLCLASS
Release : 11.3, 11.4, 11.5
Component : CA Workload Automation System Agent
The CONTROLCLASS is special class used by the agent to manage special jobs. If agent is part of agent group then this class is used by the agent to provide CPU updates to the manager. It cannot be changed and its values are set internally. The class is logged in the agent logs for informational purposes.
For more information on initiators refer to the following documentation link.