AEVEX Corp. faces a securities class action in the U.S. District Court for the Southern District of California alleging that the company, Madison Dearborn Partners, LLC, certain executives, directors and IPO underwriters concealed a plan to waive a 180-day share lock-up after AEVEX's April 2026 initial public offering. The complaint covers purchasers of Class A common stock traceable to the IPO and investors who bought shares between April 17 and June 4, 2026. It alleges AEVEX sold 18.4 million shares in the IPO, then disclosed a planned secondary public offering of eight million Class A shares on June 1. The stock fell about 16% after that disclosure and another 7% after June 5 offering documents allegedly revealed the lock-up waiver plan. Investors have until Oct. 20, 2026, to seek appointment as lead plaintiff. The allegations have not been proven in court.