March 6, 2025
IMRF would like to thank outgoing trustee Louis W. Kosiba for serving on the IMRF Board of Trustees. Kosiba served as the Annuitant Trustee from 2021 to 2025, and held the positions of Board Secretary, Vice President and, most recently, as President. During his time on the Board, IMRF assets grew from about $50 billion to more than $56 billion.
Prior to his retirement, Kosiba was a long-time employee at IMRF serving as Manager of Field Services, General Counsel and finally as Executive Director from 2001 to 2017.
“We want to thank Lou for his lifetime of service to IMRF,” said Executive Director Brian Collins.