We are deeply saddened to share the passing of our colleague and friend Arnold J. “Arnie” Miller. Arnie joined forces with John Isaacson in 1983 and was a leader in the firm for many years. He anchored Isaacson, Miller's practice serving some of the nation's most consequential advocacy and policy organizations — including leading IM teams that assisted two US Presidents and two US Secretaries of State in staffing leadership posts.

Arnie was truly a force, and his spirit lives on at Isaacson, Miller — particularly in our work with organizations dedicated to social justice and advocacy. He believed deeply in the power of leadership to advance meaningful change, and that belief remains an inspiration for the work that we do. 

Click here to read Arnie’s full obituary. 

A memorial service will be held in Fall 2026. If you would like to receive additional information as details are available, please contact info@imsearch.com.