The lawsuit, filed in the U.S. District Court for the Southern District of California under the name Rosenberg v. AEVEX Corp., claims that AEVEX and its private equity owner, Madison Dearborn Partners, LLC, misled shareholders regarding the stability of stock ownership. While the company initially committed to a 180-day lock-up period, the complaint alleges that defendants had pre-arranged a secondary public offering that allowed for an early sale of shares.

Market reaction to these disclosures was swift. When AEVEX announced its intention to sell eight million additional shares on June 1, 2026, the company's stock price dropped approximately 16%. A subsequent decline of 7% followed the June 5 filing of a prospectus that officially disclosed the waiver of lock-up restrictions. The legal action, led by the firm Robbins Geller Rudman & Dowd LLP, seeks to hold the company, its top executives, and underwriters accountable for violations of the Securities Act of 1933 and the Securities Exchange Act of 1934. Investors seeking to participate in the litigation process must file their motions by the October deadline.