Form 4 Filing by Cynthia A. Niekamp for Ball Corp.

Cynthia A. Niekamp, a director at Ball Corp, acquired 2,903 Restricted Stock Units (RSUs) on April 29, 2026, as part of her annual award under the company's incentive plan. These RSUs vest one year from the award date, contingent on continued service. On April 30, 2026, 3,369 shares of Common Stock were acquired upon the lapse of RSUs. Following these transactions, Ms. Niekamp holds 28,847 RSUs and 24,949.0427 shares of Common Stock directly. Each RSU represents a contingent right to one share of Ball Corporation Common Stock.