Dianna O'Sullivan

Dianna O'Sullivan possesses extensive experience in accounting management, having held multiple leadership positions including Controller and Chief Financial Officer at Management Sciences for Health from April 2019 to May 2025. O'Sullivan has a strong background in the year-end close process and has served as Corporate Controller and Accounting Manager prior to this role. Previous positions include Controller at SunSetter Products, Controller at EBI Consulting, and Financial Accounting Manager at Weir Valves & Controls USA, as well as Senior Auditor at MFA - Moody, Famiglietti & Andronico. O'Sullivan holds a Master of Science in Accounting and Tax from Bentley University, earned in January 2007.