On Thursday, Mark Parker, CEO of Nike Inc., held a rare company-wide staff meeting at the company’s headquarters to apologize for allowing a culture where staff members were excluded and workplace complaints of inappropriate behavior were dismissed, according to The Wall Street Journal.

The meeting at Nike’s Beaverton headquarters followed the departures of several senior executives amid internal complaints of inappropriate behavior.

In mid-March, Nike announced that the resignation of Trevor Edwards, Nike Brand president, and the firing of Jayme Martin, VP and general manager of global categories for Nike Brand, due to workplace complaints. Nike said at the time of the dismissals that it was conducting a review of the company’s human-resources systems and practices for elevating internal complaints. At least four other executives have since left the company.