Humana's Susan Diamond is stepping down as CFO and handing over the role to a top finance executive at a BlackRock-owned fund, in a major shakeup in the health insurer's management ranks following the appointment of a new CEO earlier this year.

Celeste Mellet, currently the finance chief at an infrastructure investment fund, will take on the insurer’s CFO role in early January.

Humana's chief financial officer Susan Diamond will step down in January, the insurer announced Tuesday. | Susan Diamond will exit the CFO role after three years and a total of eighteen across different positions at Humana,

The replacement for the CFO role at Humana serves in the same role at Global Infrastructure Partners and Fannie Mae.

Health insurer Humana Inc. announced on Tuesday that its CFO Susan Diamond will step down after 18 years at the firm and will be replaced by Celeste Mellet effective January 11, 2025. Mellet currently serves as the CFO of infrastructure fund manager Global Infrastructure Partners (GIP).