Maria Bartiromo, one of Fox News’s most recognizable anchors and a fierce backer of President Trump, is leaving the network, the company said Thursday.

In a statement, the network said: “Effective today, Maria Bartiromo is no longer with Fox News Media.” It did not specify a reason for the abrupt departure.

“We thank Maria for her work over the last 12½ years and wish her all the best on her next chapter,” the statement said.

The network said it would rename her daily program on Fox Business Network, “Mornings With Maria,” to “Mornings With FOX Business.” It will now be led by a rotating cast of hosts. A replacement for Ms. Bartiromo for her Sunday morning program, “Sunday Morning Futures,” will be named at a later date, the statement said.

After Mr. Trump lost the 2020 presidential election, Ms. Bartiromo helped to promote his claims that his defeat was the result of fraud and election irregularities. Her conduct became a focal point of two major defamation lawsuits against Fox News, from the voting machine companies Dominion Voting Systems and Smartmatic. Fox settled its suit with Dominion for $787.5 million in 2023; the Smartmatic case continues.

Ms. Bartiromo joined Fox News in 2014 from a high-profile run at CNBC, where she was the first television journalist to report from the floor of the New York Stock Exchange.

Ms. Bartiromo did not immediately respond to a request for comment.

This is a developing story. Check back for updates.