UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM SD

Specialized Disclosure Report

Aerojet Rocketdyne Holdings, Inc.

(Exact name of registrant as specified in its charter)

Delaware	1-01520	34-0244000
(State of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
2001 Aerojet Road Rancho Cordova, California		95742
(Address of Principal Executive Offices)		(Zip Code)
P.O. Box 537012 Sacramento, California		95853-7012
(Mailing Address)		(Zip Code)

Kathleen E. Redd, Vice President, Chief Financial Officer and Assistant Secretary

(916) 355-2361

(Name and telephone number, including area code, of the person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies

ý Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2015.

Section 1 Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

This Form SD and the Conflict Minerals Report attached hereto as Exhibit 1.01 of Aerojet Rocketdyne Holdings, Inc. (the "Company") are filed pursuant to Rule 13p-1 promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period January 1, 2015 to December 31, 2015.

A copy of the Company’s Conflict Minerals Report is provided as Exhibit 1.01 hereto and is publicly available at http://ir.aerojetrocketdyne.com/sec.cfm.

Item 1.02 Exhibit

As specified in Section 2, Item 2.01 of this Form SD, the Company is hereby filing its Conflict Minerals Report as Exhibit 1.01 to this report.

Section 2 Exhibits

Item 2.01 Exhibits

The following exhibit is filed as part of this report.

Exhibit No.	Description
1.01	Conflict Minerals Report of Aerojet Rocketdyne Holdings, Inc. as required by Items 1.01 and 1.02 of this report.

Forward Looking Statements

Unless otherwise indicated or required by the context the terms “we,” “our,” and “us” refer to Aerojet Rocketdyne Holdings, Inc.

This report and any exhibits to this report may contain “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995 regarding our business, products and conflict minerals efforts, including steps we intend to take to mitigate the risk that conflict minerals in our products benefit armed groups in the Democratic Republic of Congo (“DRC”) or an adjoining country. The words “anticipate,” believe,” “estimate,” “expect,” “intend,” “will,” “should” and similar expressions, as they relate to us, are intended to identify forward-looking statements, but are not the exclusive means of identifying forward-looking statements in this report. Additionally, statements concerning future matters that are not historical are forward-looking statements. Although forward-looking statements in this report reflect our good faith judgment, such statements can only be based on facts and factors currently known to us. Consequently, forward-looking statements are inherently subject to risk and uncertainties, and actual results and outcomes may differ materially from the results and outcomes discussed in or anticipated by forward-looking statements. Factors that could cause or contribute to such differences in results or outcomes include without limitation: the risk that information reported to us by our suppliers from which we directly procure finished goods, components, materials and/or services for our products (direct suppliers), or industry information used by us, may be inaccurate; the risk that smelters or refiners (processing facilities) may not participate in the Conflict Free Smelter Program (“CFSP”), which is a voluntary initiative in which independent third parties audit processing facilities’ procurement and processing activities and determine if the processing facilities maintain sufficient documentation to reasonably demonstrate conflict-free sourcing; as well as risks discussed under the heading “Risk Factors” in our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission as well as in our Current Reports on Form 8-K. Readers are urged not to place undue reliance on forward-looking statements, which speak only as of the date of this report. We undertake no obligation to revise or update any forward-looking statements in order to reflect any event or circumstance that may arise after the date of this report. Throughout this report, whenever a reference is made to our website, such reference does not incorporate information from the website by reference into this report unless specifically identified as such.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		Aerojet Rocketdyne Holdings, Inc.
Date:	May 31, 2016	By:	/s/ Arjun Kampani
		Name:	Arjun Kampani
		Title:	Vice President, General Counsel and Secretary

EXHIBIT INDEX

Exhibit No.	Description
1.01*	Conflict Minerals Report of Aerojet Rocketdyne Holdings, Inc. as required by Items 1.01 and 1.02 of this report.

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* Filed herewith