Form 4 Filing by Eugene Nonko

Eugene Nonko, a director at MediaAlpha, Inc., reported the sale of Class A Common Stock through a Rule 10b5-1 trading plan. The plan was adopted to cover taxes from vested RSUs. On October 19, 2026, Nonko sold 1,940 shares directly at an average price of $11.39 and indirectly sold 7,273 shares through O.N.E. Holdings, LLC at an average price of $11.39. On October 20, 2026, he sold another 1,940 shares directly at an average price of $11.62 and 7,273 shares indirectly at an average price of $11.72. On October 21, 2026, Nonko sold 1,940 shares directly at an average price of $11.63 and 7,273 shares indirectly at an average price of $11.63. Following these transactions, Nonko directly holds 791,800 shares and indirectly holds 812,730 shares through O.N.E. Holdings, LLC.