He will focus on driving operational transformation for portfolio companies.
The departures appear to have taken place earlier this month.
She will leave the Kansas City, Mo.-based firm at year-end.
He will lead a new effort in sourcing and managing privately placed investment-grade credit investments.
The firm added multiple members of the Spring Bridge Partners team, including its two founders.
The senior asset management officer was with the plan for 21 years.
Larry Johansen has announced his impending retirement after more than 12 years with the plan.
He will focus primarily on the healthcare and utilities sectors.
The plan welcomes back Terrill Sanchez, who previously spent over two decades with the plan, as its interim executive director.
She will drive the growth strategy for North American investments.