A general partner in the Mideast & China Trading Company in Honolulu formerly Hemmeter Investment Company Diane J. Plotts received her Bachelor of Science degree in accounting from San Jose State University in 1958, and served as a finance officer in the US Air Force.
Moving to Hawai'i in 1962, she began her long partnership with Hemmeter-related companies a year later. Her work included the development of subsidiary entities including Kings Alley (now Kings Village), Hyatt Regency Waikiki, Hyatt Regency Maui, Hyatt Regency Waikoloa (now Hilton), Westin Maui and Westin (now Marriott) Kauai
A founding director of the Bank of Honolulu, Plotts currently holds business directorships with Hawaiian Electric Industries, Inc. as past chair of HEIís Audit Committee and current chair of its Compensation Committee. She currently chairs the audit committees for Hawaiian Electric Company, Inc. and American Savings Bank.
Plotts is active in community service and has served the National Symphony Orchestra-Kennedy Center, Washington D.C.; Hawaii Health Systems Corporation; Aloha United Way; Honolulu Symphony; University of Hawaii Board of Regents; University of Hawaii Foundation; Nature Conservancy of Hawaii; Hawaii Community Foundation; National Business Committee for the Arts; Waikiki Improvement Association; Economic Revitalization Task Force; and the Center for International Dispute Resolution.
Her current not-for-profit directorships include the Honolulu Country Club and the Plaza Club.