The Ontario Teachers’ Pension Plan is making four key appointments to its executive team, effective immediately.

The investment organization has appointed Stephen McLennan as chief investment officer of asset allocation and Gillian Brown as CIO of public and private investments, as well as Jonathan Hausman as chief strategy officer and Nick Jansa as executive managing director.

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According to a press release, McLennan will be responsible for the overall asset mix and will manage portfolio risks, while Brown will oversee investments across public and private markets. Hausman will oversee the investment organization’s sustainable investing activities, while continuing to lead the global investment strategy department.