Connecticut-based Chembulk Tankers will have a new CFO from 1 May.
Bart Kelleher will replace John Capasso, who is resigning to pursue other career opportunities, the company said.
Capasso has been with the owner since May 2017 and has played a key role, it added.
Kelleher, Chembulk's chief strategy officer since early 2016, will see his job expanded to include finance and accounting functions as well as corporate strategy.
In 2018, he led the company’s efforts to raise $200m in a secured bond issue.
He was previously COO for Apollo’s Principal Maritime from the company’s formation in 2010 and acting CFO during its start-up and growth phases.
Kelleher has also worked for Bear Stearns and HSH Nordbank, after serving as a deck officer on tankers and holding management positions in the cruise industry and with a leading naval architecture firm.
"John and Bart will work closely together over the next two months to facilitate a smooth transition of duties," Chembulk said.
The company operates a fleet of 26 stainless-steel tankers.
It is backed by shareholders KKR and York Capital Management.
