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person · Reporting owner

MILLIGAN STEPHEN D

Disclosed activity across 3 companies

Tapewire entity
15839
SEC CIK
0001277246

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Autodesk, Inc.ADSK · Entity 3027DirectorJune 18, 2025June 21, 2025
ROSS STORES, INC.ROST · Entity 2968DirectorMay 21, 2026May 26, 2026
WESTERN DIGITAL CORPWDC · Entity 1010DirectorApril 17, 2020April 21, 2020

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Autodesk, Inc.

Report date June 18, 2025 · Filed June 21, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect304 Reported balance After 2025-06-18 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2025-06-18 · Grant · Acquired 304 · Balance 304

F1: The Reporting Person is entitled to receive one share of Common Stock for each Restricted Stock Unit. These are Restricted Stock Units granted pursuant to the Director Compensation Policy and under the 2022 Equity Incentive Plan in lieu of cash compensation for services as a director, and vest on the date of the next annual meeting.

F2: The total securities beneficially owned includes 304 shares of unvested Restricted Stock Units.

Common StockSEC Table I · non-derivativeDirect1,150 Reported balance After 2025-06-18 transaction · row 2 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 2 · 2025-06-18 · Grant · Acquired 846 · Balance 1,150

F3: The Reporting Person is entitled to receive one share of Common Stock for each Restricted Stock Unit. These Restricted Stock Units, which are granted annually pursuant to the Director Compensation Policy and under the 2022 Equity Incentive Plan, vest on the date of the next annual meeting.

F4: The total securities beneficially owned includes 1,150 shares of unvested Restricted Stock Units.

Common StockSEC Table I · non-derivativeIndirectBy Trust10,894 Reported balance Holding disclosure · report date 2025-06-18 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 10,894

Filing footnotes · ownership attribution and instrument terms

F1: The Reporting Person is entitled to receive one share of Common Stock for each Restricted Stock Unit. These are Restricted Stock Units granted pursuant to the Director Compensation Policy and under the 2022 Equity Incentive Plan in lieu of cash compensation for services as a director, and vest on the date of the next annual meeting.

F2: The total securities beneficially owned includes 304 shares of unvested Restricted Stock Units.

F3: The Reporting Person is entitled to receive one share of Common Stock for each Restricted Stock Unit. These Restricted Stock Units, which are granted annually pursuant to the Director Compensation Policy and under the 2022 Equity Incentive Plan, vest on the date of the next annual meeting.

F4: The total securities beneficially owned includes 1,150 shares of unvested Restricted Stock Units.

ROSS STORES, INC.

Report date May 21, 2026 · Filed May 26, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect22,888 Reported balance After 2026-05-21 transaction · row 1
1 source row

Row 1 · 2026-05-21 · Grant · Acquired 896 · Balance 22,888

F1: Shares issued under the terms of the 2026 Equity Incentive Plan. Shares become vested as follows: 1/3 on May 27, 2027, 1/3 on May 26, 2028, and 1/3 on May 25, 2029.

Filing footnotes · ownership attribution and instrument terms

F1: Shares issued under the terms of the 2026 Equity Incentive Plan. Shares become vested as follows: 1/3 on May 27, 2027, 1/3 on May 26, 2028, and 1/3 on May 25, 2029.

WESTERN DIGITAL CORP

Report date April 17, 2020 · Filed April 21, 2020

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Dividend Equivalent RightsSEC Table II · derivative / convertible securityDirect13,691.2688 Reported balance After 2020-04-17 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2020-04-17 · Grant · Acquired 2,037.0927 · Balance 13,691.2688

F1: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Filing footnotes · ownership attribution and instrument terms

F1: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
July 24, 2014 Filed Jul 28, 2014 22:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 4,446.916 $0.00 $0.00
Disclosure

SEC source: 0001363249-14-000008 · edgardoc.xml · derivative · entry 5

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,498.7789

Underlying: Common Stock · 4,446.916 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: An amount equal to 61.5640 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $234.25 was also paid to the holder to settle fractional dividend equivalents in an aggregate amount of 2.352.

F2 · derivative.exercise_date: An amount equal to 61.5640 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $234.25 was also paid to the holder to settle fractional dividend equivalents in an aggregate amount of 2.352.

F2 · derivative.expiration_date: An amount equal to 61.5640 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $234.25 was also paid to the holder to settle fractional dividend equivalents in an aggregate amount of 2.352.

Read SEC document
July 24, 2014 Filed Jul 28, 2014 22:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 69,808 $99.60 $6,952,876.80
Disclosure

SEC source: 0001363249-14-000008 · edgardoc.xml · nonDerivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163,506

F3 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
July 24, 2014 Filed Jul 28, 2014 22:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 4,383 $0.00 $0.00
Disclosure

SEC source: 0001363249-14-000008 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 233,314

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: An amount equal to 61.5640 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $234.25 was also paid to the holder to settle fractional dividend equivalents in an aggregate amount of 2.352.

Read SEC document
July 24, 2014 Filed Jul 28, 2014 22:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 129,406 $0.00 $0.00
Disclosure

SEC source: 0001363249-14-000008 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,931

F1 · security: Represents shares issued as payment in respect of the vesting of a performance-based stock unit award.

Read SEC document
July 15, 2014 Filed Jul 17, 2014 00:52 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 1,165.2457 $0.00 $0.00
Disclosure

SEC source: 0001266824-14-000150 · edgardoc.xml · derivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,945.6949

Underlying: Common Stock · 1,165.2457 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Read SEC document
June 19, 2014 Filed Jun 20, 2014 23:35 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 6,164 $0.00 Strike: $43.11 $0.00
Disclosure

SEC source: 0001266824-14-000114 · edgardoc.xml · derivative · entry 6

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,472

Underlying: Common Stock · 6,164 shares

Expires 2019-09-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

F6 · derivative.exercise_date: The option vested 25% one year from the grant date of 9/6/2012, and an additional 6.25% vested at the end of each three-month period through 6/6/2014. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/6/2016.

Read SEC document
June 19, 2014 Filed Jun 20, 2014 23:35 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 7,713 $0.00 Strike: $38.19 $0.00
Disclosure

SEC source: 0001266824-14-000114 · edgardoc.xml · derivative · entry 5

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,987

Underlying: Common Stock · 7,713 shares

Expires 2019-03-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

F5 · derivative.exercise_date: The option vested 25% one year from the grant date of 3/19/2012, and an additional 6.25% vested at the end of each three-month period through 6/19/14. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 3/19/2016.

Read SEC document
June 19, 2014 Filed Jun 20, 2014 23:35 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,439 $92.89 $133,668.71
Disclosure

SEC source: 0001266824-14-000114 · edgardoc.xml · nonDerivative · entry 4

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,525

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

F4 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $92.7893 to a high of $93.7892. 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.

Read SEC document
June 19, 2014 Filed Jun 20, 2014 23:35 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 12,438 $92.03 $1,144,691.53
Disclosure

SEC source: 0001266824-14-000114 · edgardoc.xml · nonDerivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,964

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

F3 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $91.69 to a high of $92.6899. 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.

Read SEC document
June 19, 2014 Filed Jun 20, 2014 23:35 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 7,713 $38.19 $294,559.47
Disclosure

SEC source: 0001266824-14-000114 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 113,402

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

Read SEC document
June 19, 2014 Filed Jun 20, 2014 23:35 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 6,164 $43.11 $265,730.04
Disclosure

SEC source: 0001266824-14-000114 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,689

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

F2 · balance_after: Includes 500 shares acquired under the issuer's Employee Stock Purchase Plan on May 31, 2014.

Read SEC document
May 19, 2014 Filed May 21, 2014 00:28 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 5,445 $85.30 $464,445.98
Disclosure

SEC source: 0001266824-14-000098 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,025

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.

F2 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $85.12 to a high of $85.65. 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.

Read SEC document
April 15, 2014 Filed Apr 18, 2014 00:05 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 962.0389 $0.00 $0.00
Disclosure

SEC source: 0001266824-14-000084 · edgardoc.xml · derivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,780.4492

Underlying: Common Stock · 962.0389 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Read SEC document
March 20, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 7,712 $87.60 $675,572.74
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · nonDerivative · entry 6

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,470

F6 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F7 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $87.43 to a high of $87.86. 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.

Read SEC document
March 20, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,535 $85.59 $216,972.93
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · nonDerivative · entry 5

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,182

F3 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F5 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $85.27 to a high of $85.81. 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.

Read SEC document
March 19, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 7,712 $0.00 Strike: $38.19 $0.00
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · derivative · entry 8

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,700

Underlying: Common Stock · 7,712 shares

Expires 2019-03-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F8 · derivative.exercise_date: The option vested 25% one year from the grant date of 3/19/2012, and an additional 6.25% vested at the end of each three-month period through 3/19/14. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 3/19/2016.

Read SEC document
March 19, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 502.6663 $0.00 $0.00
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · derivative · entry 7

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,818.4103

Underlying: Common Stock · 502.6663 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalents relate. A cash amount equal to $57.22 was also paid to the holder to settle a fractional dividend equivalent of 0.6663.

F1 · derivative.exercise_date: The dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalents relate. A cash amount equal to $57.22 was also paid to the holder to settle a fractional dividend equivalent of 0.6663.

F1 · derivative.expiration_date: The dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalents relate. A cash amount equal to $57.22 was also paid to the holder to settle a fractional dividend equivalent of 0.6663.

Read SEC document
March 19, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 7,712 $85.73 $661,184.46
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · nonDerivative · entry 4

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,717

F3 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F4 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $85.29 to a high of $86.08. 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.

Read SEC document
March 19, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 7,712 $38.19 $294,521.28
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · nonDerivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 122,429

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
March 19, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 8,877 $85.87 $762,267.99
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,717

F2 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
March 19, 2014 Filed Mar 21, 2014 23:20 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 502 $0.00 $0.00
Disclosure

SEC source: 0001266824-14-000055 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,594

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalents relate. A cash amount equal to $57.22 was also paid to the holder to settle a fractional dividend equivalent of 0.6663.

Read SEC document
March 06, 2014 Filed Mar 10, 2014 23:01 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 6,163 $0.00 Strike: $43.11 $0.00
Disclosure

SEC source: 0001266824-14-000052 · edgardoc.xml · derivative · entry 4

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,636

Underlying: Common Stock · 6,163 shares

Expires 2019-09-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F4 · derivative.exercise_date: The option vested 25% one year from the grant date of 9/6/2012, and an additional 6.25% vested at the end of each three-month period through 3/6/2014. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/6/2016.

Read SEC document
March 06, 2014 Filed Mar 10, 2014 23:01 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,981 $88.26 $174,849.40
Disclosure

SEC source: 0001266824-14-000052 · edgardoc.xml · nonDerivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,092

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F3 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $88.08 to a high of $88.49. 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.

Read SEC document
March 06, 2014 Filed Mar 10, 2014 23:01 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 4,182 $87.46 $365,739.32
Disclosure

SEC source: 0001266824-14-000052 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,073

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F2 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $87.03 to a high of $88.02. 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.

Read SEC document
March 06, 2014 Filed Mar 10, 2014 23:01 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 6,163 $43.11 $265,686.93
Disclosure

SEC source: 0001266824-14-000052 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,255

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
January 15, 2014 Filed Jan 17, 2014 23:07 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 1,023.2464 $0.00 $0.00
Disclosure

SEC source: 0001266824-14-000028 · edgardoc.xml · derivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,321.0766

Underlying: Common Stock · 1,023.2464 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Read SEC document
December 19, 2013 Filed Dec 20, 2013 23:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 7,713 $0.00 Strike: $38.19 $0.00
Disclosure

SEC source: 0001266824-13-000221 · edgardoc.xml · derivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,412

Underlying: Common Stock · 7,713 shares

Expires 2019-03-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F3 · derivative.exercise_date: The option vested 25% one year from the grant date of 3/19/2012, and an additional 6.25% vested at the end of each three-month period through 12/19/2013. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 3/19/2016.

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December 19, 2013 Filed Dec 20, 2013 23:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 7,713 $81.49 $628,506.15
Disclosure

SEC source: 0001266824-13-000221 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,092

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F2 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $81.34 to a high of $81.65. 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.

Read SEC document
December 19, 2013 Filed Dec 20, 2013 23:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 7,713 $38.19 $294,559.47
Disclosure

SEC source: 0001266824-13-000221 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,805

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
December 06, 2013 Filed Dec 11, 2013 00:16 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 6,164 $0.00 Strike: $43.11 $0.00
Disclosure

SEC source: 0001266824-13-000216 · edgardoc.xml · derivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,799

Underlying: Common Stock · 6,164 shares

Expires 2019-09-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F4 · derivative.exercise_date: The option vested 25% one year from the grant date of 9/6/2012, and an additional 6.25% vested at the end of each three-month period through 12/6/2013. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/6/2016.

Read SEC document
December 06, 2013 Filed Dec 11, 2013 00:16 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 6,164 $77.59 $478,269.07
Disclosure

SEC source: 0001266824-13-000216 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,092

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F3 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $77.32 to a high of $77.83. 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.

Read SEC document
December 06, 2013 Filed Dec 11, 2013 00:16 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 6,164 $43.11 $265,730.04
Disclosure

SEC source: 0001266824-13-000216 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,256

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F2 · balance_after: Includes 608 shares acquired under the issuer's Employee Stock Purchase Plan on November 30, 2013.

Read SEC document
November 15, 2013 Filed Nov 19, 2013 23:11 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 900 $75.49 $67,944.96
Disclosure

SEC source: 0001266824-13-000205 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 122,484

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F3 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $75.36 to a high of $75.65. 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.

Read SEC document
November 15, 2013 Filed Nov 19, 2013 23:11 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 7,083 $74.90 $530,534.41
Disclosure

SEC source: 0001266824-13-000205 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,384

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F2 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $74.36 to a high of $75.35. 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.

Read SEC document
October 15, 2013 Filed Oct 18, 2013 00:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 1,106.5145 $0.00 $0.00
Disclosure

SEC source: 0001266824-13-000156 · edgardoc.xml · derivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,297.8302

Underlying: Common Stock · 1,106.5145 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Read SEC document
September 25, 2013 Filed Sep 27, 2013 22:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 7,712 $0.00 Strike: $38.19 $0.00
Disclosure

SEC source: 0001266824-13-000130 · edgardoc.xml · derivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,125

Underlying: Common Stock · 7,712 shares

Expires 2019-03-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F2 · derivative.exercise_date: The option vested 25% one year from the grant date of 3/19/2012, and an additional 6.25% vested on 9/19/2013. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 3/19/2016.

Read SEC document
September 25, 2013 Filed Sep 27, 2013 22:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 7,712 $65.00 $501,280.00
Disclosure

SEC source: 0001266824-13-000130 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,467

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
September 25, 2013 Filed Sep 27, 2013 22:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 7,712 $38.19 $294,521.28
Disclosure

SEC source: 0001266824-13-000130 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 138,179

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
September 06, 2013 Filed Sep 11, 2013 00:19 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionEmployee Stock Option (right to buy) · Derivative 24,655 $0.00 Strike: $43.11 $0.00
Disclosure

SEC source: 0001266824-13-000125 · edgardoc.xml · derivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,963

Underlying: Common Stock · 24,655 shares

Expires 2019-09-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F3 · derivative.exercise_date: The option vested 25% one year from the grant date of 9/6/2012. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/6/2016.

Read SEC document
September 06, 2013 Filed Sep 11, 2013 00:19 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 24,655 $65.10 $1,605,040.50
Disclosure

SEC source: 0001266824-13-000125 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,467

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F2 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $65 to a high of $65.19. 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.

Read SEC document
September 06, 2013 Filed Sep 11, 2013 00:19 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 24,655 $43.11 $1,062,877.05
Disclosure

SEC source: 0001266824-13-000125 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,122

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
August 16, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 5,449 $65.53 $357,097.49
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · nonDerivative · entry 6

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,467

F4 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

F6 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $65.20 to a high of $65.89. 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.

Read SEC document
August 15, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 719.7076 $0.00 $0.00
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · derivative · entry 7

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,191.3157

Underlying: Common Stock · 719.7076 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: An amount equal to 14.413 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $19.45 was also paid to the holder to settle a fractional dividend equivalent of 0.2946.

F2 · derivative.exercise_date: An amount equal to 14.413 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $19.45 was also paid to the holder to settle a fractional dividend equivalent of 0.2946.

F2 · derivative.expiration_date: An amount equal to 14.413 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $19.45 was also paid to the holder to settle a fractional dividend equivalent of 0.2946.

Read SEC document
August 15, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 44,863 $0.00 $0.00
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · nonDerivative · entry 5

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,916

F5 · security: Represents shares issued as payment in respect of the vesting of a performance-based stock unit award.

Read SEC document
August 15, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,534 $67.67 $171,475.78
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · nonDerivative · entry 4

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,053

F4 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 20, 2013.

Read SEC document
August 15, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 23,776 $66.02 $1,569,691.52
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · nonDerivative · entry 3

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,587

F3 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
August 15, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 705 $0.00 $0.00
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · nonDerivative · entry 2

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 117,363

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: An amount equal to 14.413 dividend equivalents were canceled without payment in connection with the determination of the achievement level of the performance-based restricted stock units to which the dividend equivalents relate. The remaining dividend equivalents were converted into, and paid in the form of, shares of the issuer's common stock on a one-for-one basis in connection with the vesting of the performance-based restricted stock units to which the dividend equivalents relate. A cash amount equal to $19.45 was also paid to the holder to settle a fractional dividend equivalent of 0.2946.

Read SEC document
August 14, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantEmployee Stock Option (right to buy) · Derivative 90,621 $0.00 Strike: $68.49 $0.00
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · derivative · entry 8

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,621

Underlying: Common Stock · 90,621 shares

Expires 2020-08-14

F7 · derivative.exercise_date: The option vests 25% on the first anniversary of the grant date and 6.25% at the end of each three-month period thereafter.

Read SEC document
August 14, 2013 Filed Aug 17, 2013 00:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 30,697 $0.00 $0.00
Disclosure

SEC source: 0001266824-13-000113 · edgardoc.xml · nonDerivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,658

F1 · security: Represents the grant of restricted stock units to the reporting person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
July 15, 2013 Filed Jul 17, 2013 22:53 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 937.3523 $0.00 $0.00
Disclosure

SEC source: 0001266824-13-000102 · edgardoc.xml · derivative · entry 1

MILLIGAN STEPHEN D · CIK 0001277246 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,911.0233

Underlying: Common Stock · 937.3523 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.