JACKSONVILLE, Fla. — Alistair Dove has stepped down as CEO of Jacksonville’s Museum of Science & History, nearly two years after taking the helm, amid the development of a new center exceeding $106 million.

MOSH board chairwoman Jill Davis shared that Dove’s resignation followed “much careful thought and reflection.”

Although he didn’t elaborate on the timing of his departure, Dove mentioned in a separate statement that he is embarking on his “next chapter.”

“Collaborating with the MOSH team to enhance public programs, introduce fresh exhibits, and lay the groundwork for the new museum campus on the Northbank has been immensely rewarding,” Dove expressed. “As I move forward, I’m grateful for the chance to have supported MOSH’s mission during such a transformative period.”

Chief Development Officer Maureen Mercho is now interim executive director in addition to her previous duties, Davis said. A search for a new leader will begin soon, she said.

“We are deeply grateful for Dr. Dove’s leadership and impacts on MOSH. His contributions over the past two years have meaningfully positioned MOSH for its transformative work ahead,” Davis said.

She credited Dove for helping expand MOSH programming and plan “the future museum experience.” He also developed programs “that will immerse guests in the engaging natural history of Northeast Florida and the sciences that bridge the past and the future,” she said.

“As we embark on a multi-year journey to build a state-of-the-art museum and campus, we thank Dr. Dove for the strong foundation he helped shape and are grateful for our talented leadership and staff committed to advancing our vision,” Davis said.

Mercho, who has about 25 years of nonprofit leadership experience, has already helped raise $95 million toward the new museum, including $50 million in city funds. As interim CEO, she will “ensure … forward momentum for MOSH,” Davis said.

Dove, previously vice president of science and education at the Georgia Aquarium in Atlanta, succeeded Bruce Fafard who retired in 2024.

The leadership shift will not impact plans for the new museum.

“The project remains on track,” Davis said.

Formed in 1941, the museum now located near Friendship Fountain on the Southbank of the St. Johns River has closed. Groundbreaking for a new MOSH, across the river near EverBank Stadium, is scheduled for 2026 with construction to be completed in 2028.

The estimated cost of the new museum building is $106 million for the latest conceptual design, according to a previous Times-Union report. On top of that, the expense of creating the exhibits for the museum is in the range of $25 million to $35 million. The total cost adds up to roughly $131 million to $141 million, an amount that could change as design continues, the report said.

Editor’s note: This story was first published by our news partners, The Florida Times-Union.