DRS · Leonardo DRS, Inc.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on April 1, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs vested quarterly on April 1, 2026 and June 30, 2026. The remaining RSUs will vest quarterly September 30, 2026 and December 31, 2026, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date. The number of RSUs that vested on each of April 1, 2026 and June 30, 2026 and that will vest on September 30, 2026, shall be rounded down to the nearest whole number of RSUs and the remaining RSUs shall vest on December 31, 2026.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 19, 2026.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 - $46.940, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Company or a security holder of the Company, full information regarding the number of shares sold at each separate price.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 6, 2025.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 6, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's prorated annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's prorated annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan as part of the equity component of the Reporting Person's annual retainer fee and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs vested on June 4, 2026.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.10 - $45.23, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Company or a security holder of the Company, full information regarding the number of shares sold at each separate price.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of the Issuer.

The RSUs were granted on May 14, 2026, under the Issuer's 2022 Omnibus Equity Compensation Plan. The RSUs will vest in full on May 14, 2027, subject to the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs are scheduled to vest one-third annually on each of April 1, 2027, April 1, 2028 and April 1, 2029, subject to the Reporting Person's continued employment with the Issuer through each date. The number of RSUs that vest on each of April 1, 2027 and April 1, 2028 shall be rounded down to the nearest whole number of RSUs and the remaining RSUs shall vest on April 1, 2029.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs are scheduled to vest one-third annually on each of April 1, 2027, April 1, 2028 and April 1, 2029, subject to the Reporting Person's continued employment with the Issuer through each date. The number of RSUs that vest on each of April 1, 2027 and April 1, 2028 shall be rounded down to the nearest whole number of RSUs and the remaining RSUs shall vest on April 1, 2029.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs are scheduled to vest one-third annually on each of April 1, 2027, April 1, 2028 and April 1, 2029, subject to the Reporting Person's continued employment with the Issuer through each date.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs are scheduled to vest one-third annually on each of April 1, 2027, April 1, 2028 and April 1, 2029, subject to the Reporting Person's continued employment with the Issuer through each date. The number of RSUs that vest on each of April 1, 2027 and April 1, 2028 shall be rounded down to the nearest whole number of RSUs and the remaining RSUs shall vest on April 1, 2029.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs are scheduled to vest one-third annually on each of April 1, 2027, April 1, 2028 and April 1, 2029, subject to the Reporting Person's continued employment with the Issuer through each date. The number of RSUs that vest on each of April 1, 2027 and April 1, 2028 shall be rounded down to the nearest whole number of RSUs and the remaining RSUs shall vest on April 1, 2029.

Each restricted stock unit ("RSU") was granted under the Issuer's 2022 Omnibus Equity Compensation Plan, and represents a contingent right to receive one share of the common stock of the Issuer or the cash equivalent thereof. The RSUs are scheduled to vest one-third annually on each of April 1, 2027, April 1, 2028 and April 1, 2029, subject to the Reporting Person's continued employment with the Issuer through each date. The number of RSUs that vest on each of April 1, 2027 and April 1, 2028 shall be rounded down to the nearest whole number of RSUs and the remaining RSUs shall vest on April 1, 2029.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 6, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.205 - $46.98, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 13, 2025.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 13, 2025.

Represents performance restricted stock units ("PRSUs") awarded in April 2023 under the Issuer's 2022 Omnibus Equity Compensation Plan (the "Plan") for the performance period January 1, 2023 through December 31, 2025, for which performance goals have been achieved and certified on February 19, 2026. Each PRSU represents the right to one share of the Issuer's common stock. The PRSUs vested on April 1, 2026.

Shares withheld by the Issuer to satisfy tax withholding requirements.

Shares withheld by the Issuer to satisfy tax withholding requirements.

Represents performance restricted stock units ("PRSUs") awarded in April 2023 under the Issuer's 2022 Omnibus Equity Compensation Plan (the "Plan") for the performance period January 1, 2023 through December 31, 2025, for which performance goals have been achieved and certified on February 19, 2026. Each PRSU represents the right to one share of the Issuer's common stock. The PRSUs vested on April 1, 2026.