IN LOVING MEMORY OF ARNOLD KOYA by Lois Mitsunaga President&CEO, Mitsunaga&Associates, Inc. It was with great sadness that I learned of the passing of Arnold Koya on Friday, June 27, 2025. He was 77 years old. Arnold was more than a long-time employee – he was a foundational part of our Mitsunaga&Associates family. He began working for our family of companies in 1969 after serving in the Army during the Vietnam War, and he remained with us for over 54 years. His legacy is woven into the very beginnings of Mitsunaga&Associates, Inc (MAI). Arnold stood beside my father, Dennis Mitsunaga, as they started MAI together. In those early days, it was just the two of them working tirelessly every day. On weekdays, both Arnold and my father would work for my grandfather’s construction company, now known as Mitsunaga Construction, Inc. (MCI), until around 4 p.m. and then spend the rest of the evening (and often late into the night) doing design work for what would become MAI. I still remember hearing stories of how my mom would bring them musubis to keep them going during those long stretches. After my grandfather passed away in 1984, Arnold began working full time at MAI as Vice President and Manager of the Structural Division. His leadership and technical expertise helped solidify the company’s foundation and guide it through years of growth and success. In 1987, when my dad formed a joint venture partnership between Mitsunaga Construction, Inc. and Maeda Construction of Japan, Arnold earned his general contractor’s license and served as the Responsible Managing Employee (RME) for the joint venture in Hawai’i. He was also instrumental in setting up the structural division for MM International (MMI) in Korea – a wholly owned subsidiary of MAI. MMI was awarded a Status of Forces Agreement (SOFA) contract in Korea to modernize the U.S. bases there and to relocate the main garrison from Yongsan to Camp Humphreys in Pyeongtaek The total cost of construction was $15 billion. Arnold oversaw the structural division for MMI and made many trips to Korea, ensuring the same high standards&values we uphold at MAI were carried across borders. On a personal note, Arnold was like part of our family. He spent every Thanksgiving, Christmas Eve, and New Year’s Eve with us. His specialties were making a delicious cold somen salad and his famous potato macaroni salad – dishes we always looked forward to. I’ve personally known Arnold since the day I was born, and he never missed a single one of my or my brother’s birthdays. Arnold also had a bit of a quirky personality that made him truly one of a kind – he could be both serious and unexpectedly funny, and he had his own unique way of doing things that we all grew to love. His presence, warmth, and quiet generosity were constants in our lives, and we will miss him dearly. Arnold’s life and his extraordinatry contribution to MAI along with his loyalty, humility, and work ethic left a lasting impact on all of us who had the privilege of working with him.

