Ownership Submission
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

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Sivaram Srinivasan
   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, Memory Technology
(Last)
(First)
(Middle)
C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY		 3. Date of Earliest Transaction (Month/Day/Year)
05/29/2018
(Street)

SAN JOSE, CA 95119		 4. If Amendment, Date 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
(City)
(State)
(Zip)
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
Common Stock 05/29/2018   M(1)   25,362 A $ 44.78 110,910.498 D  
Common Stock 05/29/2018   M(1)   6,322 A $ 30.2 117,232.498 D  
Common Stock 05/29/2018   M(1)   12,139 A $ 36.87 129,371.498 D  
Common Stock 05/29/2018   M(1)   18,968 A $ 40.63 148,339.498 D  
Common Stock 05/29/2018   S(1)   2,700 D $ 86.7548 (2) 145,639.498 D  
Common Stock 05/29/2018   S(1)   61,179 D $ 86.3415 (3) 84,460.498 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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. SEC 1474 (9-02)

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 Underlying Securities
(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) $ 30.2 05/29/2018   M(1)     6,322 06/28/2016(4) 06/27/2020 Common Stock 6,322 $ 0 0 D  
Employee Stock Option (right to buy) $ 36.87 05/29/2018   M(1)     12,139 05/18/2016(5) 02/17/2021 Common Stock 12,139 $ 0 0 D  
Employee Stock Option (right to buy) $ 40.63 05/29/2018   M(1)     18,968 05/17/2016(6) 02/16/2022 Common Stock 18,968 $ 0 11,380 D  
Employee Stock Option (right to buy) $ 44.78 05/29/2018   M(1)     25,362 08/03/2017(7) 08/03/2023 Common Stock 25,362 $ 0 32,606 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Sivaram Srinivasan
C/O WESTERN DIGITAL CORPORATION
5601 GREAT OAKS PARKWAY
SAN JOSE, CA 95119		       EVP, Memory Technology  

Signatures

 By: /s/ Sandra Garcia Attorney-in-Fact For: Srinivasan Sivaram   05/30/2018
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(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 2, 2017, as amended on February 26, 2018.
(2) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $86.695 to a high of $86.90. 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.
(3) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $85.695 to a high of $86.69. 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) The option vests in substantially equal installments at the end of each three-month period through June 28, 2017. The first installment became exercisable on June 28, 2016.
(5) The option vests in substantially equal installments at the end of each three-month period through February 18, 2018. The first installment became exercisable on May 18, 2016.
(6) The option vests in substantially equal installments at the end of each three-month period through February 17, 2019. The first installment became exercisable on May 17, 2016.
(7) The option vested 25% one year from the grant date of 8/3/2016, and an additional 6.25% vested at the end of each three-month period through 5/3/2018. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 8/3/2020.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.