Mark W Deyoung Form 4 ORBITAL ATK / MARK W DEYOUNG ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:	3235-0287
Estimated average burden
hours per response:	0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

DEYOUNG MARK W

(Last) (First) (Middle)

C/O ORBITAL ATK, INC.

45101 WARP DRIVE

(Street)

DULLES VA 20166

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ORBITAL ATK, INC. [ OA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/10/2015

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Phantom Stock Units(1)	(2)	12/10/2015		A		7.997		(1)	(1)	Common Stock	7.997	$86.12	2,657	D
Deferred Stock Units(3)	(4)	12/10/2015		A		30.9142		(3)	(3)	Common Stock	30.9142	$86.12	10,271	D

Explanation of Responses:

1. These securities were acquired through the deemed reinvestment of dividend equivalents in the form of additional Phantom Stock Units of the Issuer (Orbital ATK, Inc.) credited to the reporting person's account under the Nonqualified Deferred Compensation Plan (NQDCP) of Vista Outdoor Inc. (Vista), a former subsidiary of the Issuer that was spun off as an independent company. The Orbital ATK Phantom Stock Units will be settled 100% in cash following the reporting person's termination of employment with Vista.

2. 1-for-1.

3. These securities were acquired through the deemed reinvestment of dividend equivalents in the form of additional Orbital ATK Deferred Stock Units credited to the reporting person's account under Vista's NQDCP. The Orbital ATK Deferred Stock Units will be settled 100% in shares of Orbital ATK common stock following the reporting person's termination of employment with Vista.

4. Converts to common stock 1-for-1.

	/s/Mark W. DeYoung	12/10/2015
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.