X0609 4 2026-08-26 0 0001336917 Under Armour, Inc. UA 0001344637 Plank Kevin A false 101 PERFORMANCE DRIVE BALTIMORE MD 21230 1 1 1 0 President and CEO 0 Class C Common Stock 2026-08-26 4 A 0 2165533 0 A 6206831 D Class C Common Stock 829444 I KDP Holdings I LLC Class C Common Stock 11250000 I KDP Holdings III LLC Class C Common Stock 3107880 I Plank Family Trust Class C Common Stock 719722 I KD Plank LLC Class C Common Stock 1046123 I KD Plank #2 LLC Class B Common Stock 24260624 I KDP Holdings I LLC Class B Common Stock 5250000 I KDP Holdings II LLC Class B Common Stock 3135976 I Plank Family Trust Class B Common Stock 739650 I KD Plank LLC Class B Common Stock 1063750 I KD Plank #2 LLC Class A Common Stock 181608 I KDP Holdings I LLC The 2,165,533 restricted stock units are subject to both performance and time vesting conditions. The performance vesting condition requires, prior to March 31, 2030, the passing of 60 consecutive trading days on the New York Stock Exchange on which the average of the closing trading price of the Company's Class C Common Stock equals or exceeds $5.77. If the performance vesting condition is satisfied prior to March 31, 2030, the restricted stock units are subject to time vesting. If the performance vesting condition is not satisfied prior to March 31, 2030, the 2,165,533 restricted stock units will be forfeited. /s/ Mehri F. Shadman, Attorney-in-Fact for Kevin A. Plank 2026-08-28