Chris Martin jokingly warned fans about Coldplay’s “The Jumbotron Song” during the band’s first concert since capturing a now-infamous moment at a Boston-area show earlier this week.

The CEO of Astronomer, a New York-based tech company, resigned Saturday following speculation surrounding a moment caught on camera during a Coldplay concert in Massachusetts this week.

“As stated previously, Astronomer is committed to the values and culture that have guided us since our founding. Our leaders are expected to set the standard in both conduct and accountability, and r...