Rianne Lemsom has been appointed Chief Fiduciary & Integrated Balance Sheet Management (CFIBM) of APG Asset Management (APG AM), effective 1 December 2026. Her appointment is for a period of four years.
Ms. Lemsom (53) has almost thirty years of experience in pensions, investments, and fiduciary management. Since January 2025, she has served as Chief Fiduciary Officer at APG AM. Prior to joining APG AM, she was Executive Board Member responsible for investments at pension fund ABP. Earlier in her career, Ms. Lemsom held various leadership positions at Unilever and NN.
The appointment follows APG’s renewed strategy announced at the end of 2025. Ms. Lemsom’s new role builds on her current responsibilities. As CFIBM, she will be responsible for overseeing the overall investment portfolio and will bring together advice, implementation and monitoring in integrated balance sheet management. In her new role, Ms. Lemsom will also be responsible for building and leading the CFIBM organization and will contribute to the further transformation of APG AM.
Alineke van den Berge-Blindenbach, CEO of APG AM commented: “Since joining APG AM as Chief Fiduciary Officer in January 2025, Rianne has successfully led the CFI organization through a period of significant change and challenging circumstances. I welcome Rianne’s appointment in this critical role. She has strong support both within the organization and with our clients. She is the right person to lead CFIBM and take this important next step in our transformation.”
Allan Polack, Chair of the Supervisory Board of APG AM, added: “We join Alineke in warmly congratulating Rianne on her appointment. Like the rest of the pension industry, we are in the middle of the WTP transition. With Rianne, we have one of the most senior and experienced leaders in the industry to guide us and our clients through this transformation. I look forward to seeing the progress we make together.”
With Ms. Lemsom’s appointment, three of the five positions on the new APG AM Board have been filled: Alineke van den Berge-Blindenbach as CEO, Barbara Bakker as CFRO and Rianne Lemsom as CFIBM. The selection processes for the positions of Chief Technology & Operational Officer and Chief Investment Officer are ongoing.