SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. February 18, 2021 Aerojet Rocketdyne Holdings, Inc. By: /s/ EILEEN P. DRAKE Eileen P. Drake Chief Executive Officer and President Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. 90 Signature Title Date /s/ EILEEN P. DRAKE Eileen P. Drake Chief Executive Officer, President and Director (Principal Executive Officer) February 18, 2021 /s/ DANIEL L. BOEHLE Daniel L. Boehle Vice President, Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) February 18, 2021 * Warren G. Lichtenstein Executive Chairman February 18, 2021 * Kevin P. Chilton Director February 18, 2021 * Thomas A. Corcoran Director February 18, 2021 * James R. Henderson Director February 18, 2021 * Lance W. Lord Director February 18, 2021 * Audrey McNiff Director February 18, 2021 * Martin Turchin Director February 18, 2021 * By: /s/ DANIEL L. BOEHLE Daniel L. Boehle Attorney-in-Fact pursuant to Power of Attorney February 18, 2021