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Rex Tibbens. Photo via Lyft

Rex Tibbens is stepping down as chief operating officer of Lyft by year-end, Axios has learned from multiple sources. Tibbens, who joined the ride-hail company in 2015 after four years at Amazon and over a decade at Dell, has not yet decided on his future plans.

Why it matters: Lyft reportedly wants to go public next year, but first will need to fill this new hole in its senior executive team.

Below is an email sent on Monday evening by Lyft to company employees, following Axios' inquiries:

Team,

We wanted to share a note of thanks to Rex and provide a leadership team update. After 2+ years with Lyft, helping grow the business over 10x, Rex has decided that at the end of the year he will move on from his role as COO. In the new year, he'll spend time advising companies, reacquainting himself with his family, and figuring out what's next for TRex. He's been an incredible partner helping bring Lyft to every state, and launching strategic initiatives like Express Drive and our Nashville support center.

To lead the charge for Lyft's next phase of growth, we're underway with the search for our next COO. We're extremely thankful for the impact Rex has had on all of us, and excited by the opportunity to bring in new leadership to drive forward our next chapter.

Thanks,Logan & John

Go deeper

At least 3 dead after Amtrak train derails in Montana

Photo: Robert Alexander/Getty Images

An Amtrak train derailed near Joplin, Montana, killing at least three people and wounding many others on Saturday afternoon, per a Liberty County Sheriff's Office statement to media outlets.

The big picture: Some 147 passengers and 13 crew were aboard the Empire Builder train, which runs from Seattle to Chicago, when five cars derailed about 4p.m., Amtrak spokesperson Kimberly Woods said in an emailed statement. The National Transportation Safety Board said it's investigating the derailment.

New York prepares for staff shortages from health vaccine mandate

New York Gov. Kathy Hochul during a news conference Tuesday in New York City.. Photo: Mark Kauzlarich/Bloomberg via Getty Images

Gov. Kathy Hochul (D) announced Saturday she would declare a state of emergency if there were health worker shortages due to New York's upcoming COVID-19 vaccine mandate.

Why it matters: Hochul moved to reassure concerns of staffing shortages in the health care sector in a statement that also outlined plans to call in medically trained National Guard members, workers from outside New York and retirees if necessary when the mandate takes effect Monday.

California to remove word "alien" from state laws

Gov. Gavin Newsom during a September news conference in Oakland, California. Photo: Jane Tyska/Digital First Media/East Bay Times via Getty Images

California is removing the word "alien" from its state laws and replacing it with words such as "noncitizen" and "immigrant," Gov. Gavin Newsom (D) announced.

Why it matters: The word "alien" began to be used in the 1990s "as a political dog whistle to express bigotry and hatred without using traditionally racist language," per a statement from Newsom's office.