The director of NASA’s Jet Propulsion Laboratory (JPL), Laurie Leshin, is leaving her post after three years. JPL announced on May 7 that Leshin would depart, effective June 1, citing “personal reasons.” Thomas Rosenbaum, president of the California Institute of Technology (Caltech), which manages JPL for NASA, echoed this in a memo to staff. “While we respect Laurie’s decision to step away from her leadership position at JPL, we will miss her drive, compassion and dedication,” Rosenbaum stated.

Leshin herself confirmed the decision on social media, stating, “Though not an easy decision, I strongly believe it is the right one for me, my family and the Lab.” NASA’s acting administrator, Janet Petro, praised Leshin’s leadership, saying, “Laurie Leshin’s leadership at JPL has been nothing short of extraordinary. She brought a sharp scientific mind, a strong sense purpose and a clear vision that helped propel the lab forward during a pivotal time.”

David Gallagher, a 36-year JPL veteran, will replace Leshin. He has served as associate director for strategic integration and was reportedly considering retirement before accepting the directorship. Gallagher acknowledged Leshin's contributions, saying in a social media post, “I’m grateful to Laurie Leshin for her inspiring leadership, which has energized and focused the Lab as we’ve navigated significant challenges in recent years. I look forward to helping guide us into a new era, with extraordinary opportunities ahead.” Petro also expressed confidence in Gallagher's ability to lead JPL, stating, “He brings decades of experience, a steady hand and a deep understanding of what makes JPL unique.”

Leshin's tenure was marked by several significant events. An independent review of delays in the Psyche asteroid mission revealed institutional issues at JPL, including workforce strain and communication problems exacerbated by the pandemic. While these issues predated Leshin's arrival, the review board later commended JPL for its response under her leadership. However, JPL also faced cost and schedule overruns in the Mars Sample Return (MSR) program, leading to layoffs of hundreds of employees in 2024. The lab also faced challenges from the Eaton Fire in January, which impacted many employees, including Leshin.

Despite stepping down as director, Leshin will remain at Caltech as a professor. “I will focus on re-starting my research program and helping my family recover from the Eaton fire,” she explained on social media.