PAE Incorporated announced that on March 15, 2021, John E. Heller submitted a letter resigning from his position as President and Chief Executive Officer for personal reasons. Mr. Heller's letter provided that his resignation is effective on March 19, 2021. Mr. Heller's resignation was not due to any disagreement with PAE Incorporated on any matter relating to its operations, policies or practices. On March 16, 2021, the Board of Directors appointed Charles D. Peiffer as Interim President and Chief Executive Officer of PAE Incorporated, effective at the opening of business on March 19, 2021. Mr. Peiffer has served as the Executive Vice President and Chief Financial Officer of PAE since 2014, and he will continue in that role. Prior to being named to this position, Mr. Peiffer served as the Senior Vice President and CFO at IAP Worldwide Services Inc. from 2009 to 2014, a leading provider of facility management, contingency support, power solutions and technical services.