The plan reached into its past to hire for the newly created position, which will focus on higher growth and higher risk and reward opportunities.
The deputy cio will leave in early December.
The plan will also interview three diverse-focused private equity managers next month.
The plan will issue an RFP for non-discretionary and discretionary services in January.
The plan is searching potential replacement for its current domestic large-cap growth equity manager.
The new ceo has been with the firm since 2008.
The search follows a recent portfolio manager departure from its incumbent manager.
The deal will create a new private capital platform with more than $60 billion in combined committed capital.
Pacific Asset Management will be renamed Aristotle Pacific Capital.
Bradley Dyslin will take over the role next year from Eric Kirsch, who is retiring.