Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, par value $0.10 per share, of Aerojet Rocketdyne Holdings, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated: July 7, 2022	STEEL PARTNERS HOLDINGS L.P.
	By:	Steel Partners Holdings GP Inc. General Partner
	By:	/s/ Jack L. Howard
		Jack L. Howard, President

SPH GROUP LLC
By:	Steel Partners Holdings GP Inc. Managing Member
By:	/s/ Jack L. Howard
	Jack L. Howard, President

SPH GROUP HOLDINGS LLC
By:	Steel Partners Holdings GP Inc. Manager
By:	/s/ Jack L. Howard
	Jack L. Howard, President

STEEL PARTNERS HOLDINGS GP INC.
By:	/s/ Jack L. Howard
	Jack L. Howard, President

WEBFINANCIAL HOLDING CORPORATION
By:	/s/ Jack L. Howard
	Jack L. Howard, Director

STEEL EXCEL, INC.
By:	/s/ Jack L. Howard
	Jack L. Howard, Director

STEEL PARTNERS, LTD.
By:	/s/ Jack L. Howard
	Jack L. Howard, President

/s/ Jack L. Howard

JACK L. HOWARD
as Attorney-In-Fact for Warren G. Lichtenstein