Dec 3 Reuters Humana39;s Susan Diamond is stepping down as CFO and handing over the role to a top finance executive at a BlackRockowned fund, in a major shakeup in the health insurer39;s management ranks following the appointment of a new CEO earlier this year.

Humana said on Tuesday Celeste Mellet39;s appointment will be effective Jan. 11. Mellet, 48, currently serves as CFO of infrastructure fund manager Global Infrastructure Partners, recently acquired by BlackRock, and has previously worked in a similar position at financial firms Evercore and Fannie Mae.

She has a proven track record of working with crossfunctional teams to drive improved performance throughout the complex organizations where she has served as a leader, Humana CEO Jim Rechtin said in a statement.

Rechtin has been trying to build credibility over time after the company withdrew its 2025 profit forecast in April due to disappointing government Medicare reimbursement rates. He took over as CEO in July from Bruce Broussard, who helmed the health insurer for more than a decade.

Diamond, 51, who is stepping down after 18 years with the health insurer, including three years as CFO, will serve in an advisory role through the end of 2025, Humana said.

We do not view the move as a total surprise, especially given the backdrop of the recent CEO change and the company39;s struggles, Oppenheimer analyst Michael Wiederhorn said in a note.

Shares of Humana were marginally up in early trading.

The…