On May 1, 2022, David Sullivan joined the IAM Executive Council as the General Vice President of the Eastern Territory. Previously, in July 2021, Sullivan was appointed Chief of Staff to the Eastern Territory General Vice President. He joined the Grand Lodge Eastern Territory Staff in 2016 as a Special Representative, progressing to the position of Grand Lodge Representative.
A 33-year IAM member, he initially joined the Industrial Union of Marine and Shipbuilding Workers of America (IUMSWA) as a shipbuilder at Bath Iron Works in Bath, ME in 1986. After the IUMSWA merged with the IAM in 1988, Sullivan served as a Shop Steward, Local Lodge Officer, and on many committees at IAM Local S6 before joining the District 4 staff as a Business Representative representing Region 1 in New England.
He later become the Assistant Directing Business Representative of District 4 before becoming Directing Business Representative in April 2014.