UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
(Rule 14a-101)
INFORMATION REQUIRED IN PROXY STATEMENT
SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934
(Amendment No. )
Filed by the Registrant ☐
Filed by a Party other than the Registrant ☒
Check the appropriate box:
| ☐ | Preliminary Proxy Statement |
| ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ | Definitive Proxy Statement |
| ☒ | Definitive Additional Materials |
| ☐ | Soliciting Material Under Rule 14a-12 |
AEROJET ROCKETDYNE HOLDINGS, INC. |
(Name of Registrant as Specified in Its Charter) |
STEEL PARTNERS HOLDINGS L.P. SPH GROUP HOLDINGS LLC SPH GROUP LLC STEEL PARTNERS HOLDINGS GP INC. WEBFINANCIAL HOLDING CORPORATION STEEL EXCEL, INC. STEEL PARTNERS LTD. WARREN G. LICHTENSTEIN JAMES R. HENDERSON TINA W. JONAS JOANNE M. MAGUIRE AUDREY A. MCNIFF AIMEE J. NELSON MARK A. TUCKER MARTIN TURCHIN VICE ADMIRAL MATHIAS W. WINTER, USN (RET.) HEIDI R. WOOD |
(Name of Persons(s) Filing Proxy Statement, if Other Than the Registrant) |
Payment of Filing Fee (Check all boxes that apply):
| ☒ | No fee required |
| ☐ | Fee paid previously with preliminary materials |
| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |
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