Tesla govt Jerome Guillen has left the corporate after solely three months because the president of the corporate’s Heavy Trucking unit, based on an SEC filing launched on Monday.

“We thank him for his many contributions and need him effectively in his future profession,” the corporate said within the submitting. His final day was June 3.

Earlier than his appointment to that position in March, Guillen had led the corporate’s total autos enterprise since 2018. Throughout his time as president of Automotive, Tesla opened its first plant abroad, in Shanghai, and expanded its battery cell provide partnerships. Guillen has labored on the firm in roles reporting on to CEO Elon Musk since November 2010.

In its fourth quarter 2020 shareholder deck, Tesla mentioned the Semi program was nonetheless “in improvement” however promised Tesla Semi deliveries would start in 2021. In its annual monetary submitting with the SEC for 2020, Tesla didn’t reiterate that Semi supply deadline.

Guillen is the second high-level exec to depart in latest months, following former vp of authorized Al Prescott, who left in April.

CNBC’s Lora Kolodny contributed to this report.