X0508 4 2024-11-29 0001833756 Leonardo DRS, Inc. DRS 0001849652 Wallace Sally C/O LEONARDO DRS, INC., 2345 CRYSTAL DR. ARLINGTON VA 22202 1 EVP, Business Operations 1 Common Stock 2024-11-29 4 M 0 20143 0 A 37229 D Common Stock 2024-11-29 4 F 0 9730 34.77 D 27499 D Common Stock 2024-11-29 4 M 0 13429 0 A 40928 D Common Stock 2024-11-29 4 F 0 6487 34.77 D 34441 D Common Stock 2024-12-02 4 S 0 4339 34.81 D 30102 D Performance Restricted Stock Unit 2024-11-29 4 M 0 20143 0 D Common Stock 20143 0 D Restricted Stock Unit 2024-11-29 4 M 0 13429 0 D Common Stock 13429 0 D Each performance restricted stock unit ("PRSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan (the "Plan") and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The PRSUs were granted to the Reporting Person in connection with the closing of the transactions contemplated by the Agreement and Plan of Merger, dated June 21, 2022, by and among Leonardo DRS, Inc., RADA Electronic Industries Limited and Blackstart Ltd (the "Merger"). The PRSUs vested on November 29, 2024, the second anniversary of the grant date. Shares withheld by the Company to satisfy tax withholding requirements. Each restricted stock unit ("RSU") was granted under the Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs were granted to the Reporting Person in connection with the closing of the Merger. The RSUs vested on November 29, 2024, the second anniversary of the grant date. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 29, 2024. /s/ Katherine A. Krebel, Attorney-in-Fact 2024-12-03