Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * DeMaria Jacqueline	2. Issuer Name and Ticker or Trading Symbol WESTERN DIGITAL CORP [ WDC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                      _____ 10% Owner __ X __ Officer (give title below)      _____ Other (specify below) EVP & Chief Human Res Officer
(Last)          (First)          (Middle) C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY	3. Date of Earliest Transaction (MM/DD/YYYY) 5/1/2017
(Street) SAN JOSE, CA 95119 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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
Common Stock	5/1/2017		M (1)		7041	A	$38.63	55951   (2)	D
Common Stock	5/1/2017		M (1)		2793	A	$29.6	58744	D
Common Stock	5/1/2017		M (1)		11576	A	$43.11	70320	D
Common Stock	5/1/2017		S (1)		16000	D	$86.771   (3)	54320	D
Common Stock	5/1/2017		S (1)		5410	D	$87.7753   (4)	48910	D

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 of Derivative Security: 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
Employee Stock Option (right to buy)	$29.6	5/1/2017		M   (1)			2793	9/14/2012   (5)	9/14/2018	Common Stock	2793	$0.0	0	D
Employee Stock Option (right to buy)	$38.63	5/1/2017		M   (1)			7041	5/16/2013   (5)	5/16/2019	Common Stock	7041	$0.0	0	D
Employee Stock Option (right to buy)	$43.11	5/1/2017		M   (1)			11576	9/6/2013   (5)	9/6/2019	Common Stock	11576	$0.0	0	D

Explanation of Responses:
(1)	These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 17, 2017.
(2)	Includes 1 share acquired under the Issuer's Employee Stock Purchase Plan on November 30, 2016.
(3)	Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $86.22 to a high of $87.19. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
(4)	Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $87.23 to a high of $88.31. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
(5)	The option vested 25% on the first anniversary of the grant date and 6.25% at the end of each three-month period thereafter.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
DeMaria Jacqueline C/O WESTERN DIGITAL CORPORATION 5601 GREAT OAKS PARKWAY SAN JOSE, CA 95119			EVP & Chief Human Res Officer

Signatures
By: /s/ Sandra Garcia Attorney-in-Fact For: Jacqueline DeMaria		5/2/2017
** 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 control number.