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person · Reporting owner

Zamiska Gene M.

Disclosed activity across 1 company

Tapewire entity
15061
SEC CIK
0001456385

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
WESTERN DIGITAL CORPWDC · Entity 1010SVP & Princ. Acctg OfficerSeptember 18, 2025September 22, 2025

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.

WESTERN DIGITAL CORP

Report date September 18, 2025 · Filed September 22, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Dividend Equivalent RightsSEC Table II · derivative / convertible securityDirect72.4915 Reported balance After 2025-09-18 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2025-09-18 · Grant · Acquired 26.1267 · Balance 72.4915

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
May 20, 2024 Filed May 22, 2024 21:12 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 221 $73.05 $16,144.05
Disclosure

SEC source: 0001266824-24-000030 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,737

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
April 08, 2024 Filed Apr 9, 2024 22:28 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 443 $75.00 $33,225.00
Disclosure

SEC source: 0001266824-24-000022 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,958

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 December 1, 2023.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 22:02 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 284 $63.00 $17,892.00
Disclosure

SEC source: 0001266824-24-000018 · edgardoc.xml · nonDerivative · entry 3

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,401

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 December 1, 2023.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 22:02 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,807 $62.00 $174,034.00
Disclosure

SEC source: 0001266824-24-000018 · edgardoc.xml · nonDerivative · entry 2

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,685

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 December 1, 2023.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 22:02 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 7,677 $61.00 $468,297.00
Disclosure

SEC source: 0001266824-24-000018 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,492

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 December 1, 2023.

Read SEC document
February 27, 2024 Filed Feb 29, 2024 22:42 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 196 $57.48 $11,266.08
Disclosure

SEC source: 0001266824-24-000014 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,169

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
February 20, 2024 Filed Feb 22, 2024 22:00 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 261 $54.13 $14,127.93
Disclosure

SEC source: 0001266824-24-000008 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,365

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
November 27, 2023 Filed Nov 28, 2023 22:09 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 165 $47.21 $7,789.65
Disclosure

SEC source: 0001266824-23-000130 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,626

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
November 20, 2023 Filed Nov 21, 2023 22:43 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 220 $47.35 $10,417.00
Disclosure

SEC source: 0001266824-23-000122 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,791

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
September 06, 2023 Filed Sep 7, 2023 21:08 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,169 $45.42 $98,515.98
Disclosure

SEC source: 0001266824-23-000093 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,011

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 November 11, 2021.

Read SEC document
September 04, 2023 Filed Sep 6, 2023 21:30 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,146 $45.96 $52,670.16
Disclosure

SEC source: 0001266824-23-000091 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,180

F1 · 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 27, 2023 Filed Aug 29, 2023 21:30 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 165 $39.49 $6,515.85
Disclosure

SEC source: 0001266824-23-000081 · edgardoc.xml · nonDerivative · entry 2

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,326

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
August 25, 2023 Filed Aug 29, 2023 21:30 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 17,726 $0.00 $0.00
Disclosure

SEC source: 0001266824-23-000081 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,491

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
August 20, 2023 Filed Aug 22, 2023 20:55 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 881 $39.74 $35,010.94
Disclosure

SEC source: 0001266824-23-000061 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,765

F1 · 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 12, 2023 Filed Aug 14, 2023 23:21 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 107.8563 $0.00 $0.00
Disclosure

SEC source: 0001266824-23-000051 · edgardoc.xml · derivative · entry 3

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 107.8563 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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

Read SEC document
August 12, 2023 Filed Aug 14, 2023 23:21 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,376 $41.88 $57,626.88
Disclosure

SEC source: 0001266824-23-000051 · edgardoc.xml · nonDerivative · entry 2

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,646

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
August 12, 2023 Filed Aug 14, 2023 23:21 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 107 $0.00 $0.00
Disclosure

SEC source: 0001266824-23-000051 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,022

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 was also paid to the holder to settle a fractional dividend equivalent.

Read SEC document
June 14, 2023 Filed Jun 16, 2023 20:59 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 115 $40.46 $4,652.90
Disclosure

SEC source: 0001266824-23-000045 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,915

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
May 27, 2023 Filed May 30, 2023 22:38 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 162 $39.71 $6,433.02
Disclosure

SEC source: 0001266824-23-000033 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,030

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
February 27, 2023 Filed Mar 2, 2023 00:24 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 196 $38.51 $7,547.96
Disclosure

SEC source: 0001266824-23-000013 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,192

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
November 27, 2022 Filed Nov 29, 2022 23:06 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 166 $37.34 $6,198.44
Disclosure

SEC source: 0001266824-22-000096 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,388

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
September 07, 2022 Filed Sep 8, 2022 21:27 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,169 $40.90 $88,712.10
Disclosure

SEC source: 0001266824-22-000070 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,554

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 November 11, 2021.

Read SEC document
September 03, 2022 Filed Sep 6, 2022 21:13 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,146 $41.65 $47,730.90
Disclosure

SEC source: 0001266824-22-000067 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,723

F1 · 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 27, 2022 Filed Aug 30, 2022 22:27 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 664 $45.49 $30,205.36
Disclosure

SEC source: 0001266824-22-000059 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,869

F1 · 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 20, 2022 Filed Aug 23, 2022 21:33 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 10,195 $0.00 $0.00
Disclosure

SEC source: 0001266824-22-000043 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,533

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
August 12, 2022 Filed Aug 15, 2022 22:05 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 107.8563 $0.00 $0.00
Disclosure

SEC source: 0001266824-22-000032 · edgardoc.xml · derivative · entry 3

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107.8563

Underlying: Common Stock · 107.8563 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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

Read SEC document
August 12, 2022 Filed Aug 15, 2022 22:05 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,376 $50.67 $69,721.92
Disclosure

SEC source: 0001266824-22-000032 · edgardoc.xml · nonDerivative · entry 2

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,338

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
August 12, 2022 Filed Aug 15, 2022 22:05 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 107 $0.00 $0.00
Disclosure

SEC source: 0001266824-22-000032 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,714

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 was also paid to the holder to settle a fractional dividend equivalent.

Read SEC document
June 14, 2022 Filed Jun 15, 2022 22:13 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 112 $49.24 $5,514.88
Disclosure

SEC source: 0001266824-22-000016 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP, Global Accounting & Chief

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,607

F1 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
May 04, 2022 Filed May 6, 2022 20:49 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 4,776 $63.00 $300,888.00
Disclosure

SEC source: 0001266824-22-000014 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,719

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 November 11, 2021.

Read SEC document
November 02, 2021 Filed Nov 3, 2021 22:47 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,607 $55.00 $143,385.00
Disclosure

SEC source: 0001266824-21-000061 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,495

Read SEC document
September 03, 2021 Filed Sep 7, 2021 22:56 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,146 $61.41 $70,375.86
Disclosure

SEC source: 0001266824-21-000055 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,102

F1 · 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 27, 2021 Filed Aug 31, 2021 23:32 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 7,685 $0.00 $0.00
Disclosure

SEC source: 0001266824-21-000043 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,248

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
August 12, 2021 Filed Aug 13, 2021 21:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 107.8842 $0.00 $0.00
Disclosure

SEC source: 0001266824-21-000025 · edgardoc.xml · derivative · entry 3

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 215.7126

Underlying: Common Stock · 107.8842 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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

Read SEC document
August 12, 2021 Filed Aug 13, 2021 21:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,377 $62.38 $85,897.26
Disclosure

SEC source: 0001266824-21-000025 · edgardoc.xml · nonDerivative · entry 2

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,563

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
August 12, 2021 Filed Aug 13, 2021 21:34 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 107 $0.00 $0.00
Disclosure

SEC source: 0001266824-21-000025 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · SVP & Princ. Acctg Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,940

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 was also paid to the holder to settle a fractional dividend equivalent.

Read SEC document
June 14, 2021 Filed Jun 16, 2021 23:05 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 1,338 $0.00 $0.00
Disclosure

SEC source: 0001266824-21-000015 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,833

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
September 03, 2020 Filed Sep 9, 2020 01:56 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 13,259 $0.00 $0.00
Disclosure

SEC source: 0001266824-20-000110 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,495

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
August 12, 2020 Filed Aug 14, 2020 01:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 107.8842 $0.00 $0.00
Disclosure

SEC source: 0001266824-20-000093 · edgardoc.xml · derivative · entry 3

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 323.5968

Underlying: Common Stock · 107.8842 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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

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 was also paid to the holder to settle a fractional dividend equivalent.

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August 12, 2020 Filed Aug 14, 2020 01:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,377 $36.77 $50,632.29
Disclosure

SEC source: 0001266824-20-000093 · edgardoc.xml · nonDerivative · entry 2

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,236

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

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August 12, 2020 Filed Aug 14, 2020 01:18 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 107 $0.00 $0.00
Disclosure

SEC source: 0001266824-20-000093 · edgardoc.xml · nonDerivative · entry 1

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,613

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 was also paid to the holder to settle a fractional dividend equivalent.

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April 17, 2020 Filed Apr 21, 2020 22:39 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 186.0988 $0.00 $0.00
Disclosure

SEC source: 0001266824-20-000074 · edgardoc.xml · derivative · entry 1

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 431.481

Underlying: Common Stock · 186.0988 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.

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January 21, 2020 Filed Jan 24, 2020 00:23 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 113.6628 $0.00 $0.00
Disclosure

SEC source: 0001266824-20-000031 · edgardoc.xml · derivative · entry 1

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 245.3822

Underlying: Common Stock · 113.6628 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.

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October 22, 2019 Filed Oct 25, 2019 00:29 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 131.7194 $0.00 $0.00
Disclosure

SEC source: 0001266824-19-000181 · edgardoc.xml · derivative · entry 1

Zamiska Gene M. · CIK 0001456385 · Principal Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 131.7194

Underlying: Common Stock · 131.7194 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.

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