After 13 days of testimony, and more than a dozen witnesses including bodyguards, Hollywood insiders, doctors and accountants, Johnny Depp’s legal team rested their case Tuesday in the actor’s 50 million defamation trial against ex-wife Amber Heard.

Before resting, the Depp team called forensic accountant Mike Spindler to the stand, who said Depp lost tens of millions of dollars as a result of Heard’s 2018 Washington Post op-ed.

“I concluded that Mr. Depp suffered lost earnings of approximately 40 million,” Spindler told the Fairfax, Virginia courtroom.

The accounting expert was hired by Depp’s team to calculate the actor’s total lost earnings from the piece, in which Heard described herself as a public figure representing domestic abuse, although she did not name Depp.

Spindler said he reviewed “accounting records, trial exhibits, deposition and trial testimony, and various other documents and exhibits in connection with the case.” He calculated Depp’s...