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Tan Irving

Disclosed activity across 3 companies

Tapewire entity
1077
SEC CIK
0001729518

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
CISCO SYSTEMS, INC.CSCO · Entity 2802EVP, Chief of OperationsNovember 20, 2020November 24, 2020
STANLEY BLACK & DECKER, INC.SWK · Entity 3378DirectorMarch 19, 2024March 21, 2024
WESTERN DIGITAL CORPWDC · Entity 1010Director · Chief Executive OfficerSeptember 17, 2026September 21, 2026

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.

CISCO SYSTEMS, INC.

Report date November 20, 2020 · Filed November 24, 2020

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect171,379 Reported balance After 2020-11-20 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2020-11-20 · Tax withholding · Disposed 4,272 · Balance 171,379

F1: Represents shares withheld for payment of tax liability arising as a result of the partial settlement of a restricted stock unit award originally reported by the reporting person in a Form 3 filed with the Commission on February 1, 2018.

F2: Includes 694 dividend equivalents accrued on unvested restricted stock units. Each dividend equivalent is the economic equivalent of one share of Cisco common stock.

Common StockSEC Table I · non-derivativeDirect167,538 Reported balance After 2020-11-24 transaction · row 2 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 2 · 2020-11-24 · Sale · Disposed 3,841 · Balance 167,538

F3: This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on December 8, 2019.

F4: Represents a weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $41.98 to $42.64. The reporting person has provided to the issuer, and undertakes to provide to the staff of the Commission or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares withheld for payment of tax liability arising as a result of the partial settlement of a restricted stock unit award originally reported by the reporting person in a Form 3 filed with the Commission on February 1, 2018.

F2: Includes 694 dividend equivalents accrued on unvested restricted stock units. Each dividend equivalent is the economic equivalent of one share of Cisco common stock.

F3: This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on December 8, 2019.

F4: Represents a weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $41.98 to $42.64. The reporting person has provided to the issuer, and undertakes to provide to the staff of the Commission or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

STANLEY BLACK & DECKER, INC.

Report date March 19, 2024 · Filed March 21, 2024

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect6,033.9433 Reported balance After 2024-03-19 transaction · row 1
1 source row

Row 1 · 2024-03-19 · Grant · Acquired 54.128 · Balance 6,033.9433

F1: Under the Stanley Black & Decker, Inc. 2020 Restricted Stock Unit Deferral Plan for Non-Employee Directors (the "RSU Deferral Plan"), each director's account is credited with dividend equivalents on the deferred restricted stock units when the Company pays cash dividends on its common stock (including special dividends, if any), and such dividend equivalents are denominated in additional restricted stock units based on the average of the high and low price per share on the New York Stock Exchange on the payment date applicable to such dividend. The number of shares reflects the credit of such dividend equivalents to the reporting person's account under the RSU Deferral Plan.

Deferred SharesSEC Table II · derivative / convertible securityDirect4,714.2272 Reported balance After 2024-03-19 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2024-03-19 · Grant · Acquired 38.6317 · Balance 4,714.2272

F2: Represents additional deferred shares acquired through the reinvestment of dividends paid on deferred shares credited to the reporting person's account under the Stanley Black & Decker, Inc. Deferred Compensation Plan for Non-Employee Directors (the "Deferred Compensation Plan"). Each deferred share entitles the holder thereof to receive one share of common stock upon settlement. The deferred shares credited to the reporting person's account under the Deferred Compensation Plan, including any additional deferred shares acquired through dividend reinvestment, will be settled in five approximately equal annual installments starting on the first business day of the calendar year immediately following the date on which the reporting person ceases to be a member of the Board of Directors.

Filing footnotes · ownership attribution and instrument terms

F1: Under the Stanley Black & Decker, Inc. 2020 Restricted Stock Unit Deferral Plan for Non-Employee Directors (the "RSU Deferral Plan"), each director's account is credited with dividend equivalents on the deferred restricted stock units when the Company pays cash dividends on its common stock (including special dividends, if any), and such dividend equivalents are denominated in additional restricted stock units based on the average of the high and low price per share on the New York Stock Exchange on the payment date applicable to such dividend. The number of shares reflects the credit of such dividend equivalents to the reporting person's account under the RSU Deferral Plan.

F2: Represents additional deferred shares acquired through the reinvestment of dividends paid on deferred shares credited to the reporting person's account under the Stanley Black & Decker, Inc. Deferred Compensation Plan for Non-Employee Directors (the "Deferred Compensation Plan"). Each deferred share entitles the holder thereof to receive one share of common stock upon settlement. The deferred shares credited to the reporting person's account under the Deferred Compensation Plan, including any additional deferred shares acquired through dividend reinvestment, will be settled in five approximately equal annual installments starting on the first business day of the calendar year immediately following the date on which the reporting person ceases to be a member of the Board of Directors.

WESTERN DIGITAL CORP

Report date September 17, 2026 · Filed September 21, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect265,612.727 Ending reported balance After 2026-09-20 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-09-20 · Exercise / conversion · Acquired 56.762 · Balance 266,703.762

F1: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Row 2 · 2026-09-20 · Tax withholding · Disposed 1,091.035 · Balance 265,612.727

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

Dividend Equivalent RightsSEC Table II · derivative / convertible securityDirect857.238 Reported balance After 2026-09-17 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2026-09-17 · Grant · Acquired 83.2995 · Balance 857.238

F3: 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.

Dividend Equivalent RightsSEC Table II · derivative / convertible securityDirect800.4758 Reported balance After 2026-09-20 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2026-09-20 · Exercise / conversion · Disposed 56.7622 · Balance 800.4758

F1: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Common StockSEC Table I · non-derivativeIndirectBy Trust via Inv Co112,500 Reported balance Holding disclosure · report date 2026-09-17 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 112,500

Common StockSEC Table I · non-derivativeIndirectby Personal Inv. Co.209,000 Reported balance Holding disclosure · report date 2026-09-17 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 209,000

Filing footnotes · ownership attribution and instrument terms

F1: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

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

F3: 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
March 20, 2026 Filed Mar 24, 2026 22:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 49.3438 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000073 · primary_doc.xml · derivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 948.8441

Underlying: Common Stock · 49.3438 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
March 20, 2026 Filed Mar 24, 2026 22:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,042 $293.10 $305,410.20
Disclosure

SEC source: 0001266824-26-000073 · primary_doc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 618,150

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 20, 2026 Filed Mar 24, 2026 22:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 49 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000073 · primary_doc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 619,192

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
March 18, 2026 Filed Mar 19, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 122.5747 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000068 · edgardoc.xml · derivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 998.1879

Underlying: Common Stock · 122.5747 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 03, 2026 Filed Mar 6, 2026 00:54 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 92.8686 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000038 · edgardoc.xml · derivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 875.6132

Underlying: Common Stock · 92.8686 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
March 03, 2026 Filed Mar 6, 2026 00:54 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 3,512 $250.61 $880,142.32
Disclosure

SEC source: 0001266824-26-000038 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 619,143

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 03, 2026 Filed Mar 6, 2026 00:54 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 92 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000038 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 622,655

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:57 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 27.017 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000028 · edgardoc.xml · derivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 968.4818

Underlying: Common Stock · 27.017 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:57 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 425 $290.95 $123,653.75
Disclosure

SEC source: 0001266824-26-000028 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 622,563

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
February 25, 2026 Filed Feb 27, 2026 21:57 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 27 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000028 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 622,988

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 21, 2026 Filed Feb 24, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 21.0964 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000020 · edgardoc.xml · derivative · entry 6

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 995.4988

Underlying: Common Stock · 21.0964 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 21, 2026 Filed Feb 24, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 523 $285.52 $149,326.96
Disclosure

SEC source: 0001266824-26-000020 · edgardoc.xml · nonDerivative · entry 4

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 622,961

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
February 21, 2026 Filed Feb 24, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 21 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000020 · edgardoc.xml · nonDerivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 623,484

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 20, 2026 Filed Feb 24, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 11.1895 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000020 · edgardoc.xml · derivative · entry 5

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,016.5952

Underlying: Common Stock · 11.1895 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 20, 2026 Filed Feb 24, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 134 $285.52 $38,259.68
Disclosure

SEC source: 0001266824-26-000020 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 623,463

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
February 20, 2026 Filed Feb 24, 2026 22:44 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 11 $0.00 $0.00
Disclosure

SEC source: 0001266824-26-000020 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 623,597

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 400 $250.71 $100,284.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 17

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 623,586

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 May 12, 2025.

F15 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $250.62 to a high of $250.80. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 100 $262.55 $26,255.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 16

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 623,986

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 May 12, 2025.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 3,626 $261.84 $949,414.07
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 15

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 624,086

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 May 12, 2025.

F14 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $261.50 to a high of $262.41. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,444 $260.84 $637,487.34
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 14

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 627,712

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 May 12, 2025.

F13 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $260.45 to a high of $261.37. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,250 $259.93 $584,835.30
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 13

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 630,156

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 May 12, 2025.

F12 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $259.40 to a high of $260.35. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,096 $258.65 $542,137.53
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 12

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 632,406

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 May 12, 2025.

F11 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $258.29 to a high of $258.96. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,500 $257.82 $386,725.20
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 11

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 634,502

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 May 12, 2025.

F10 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $257.29 to a high of $258.20. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,000 $256.76 $256,761.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 10

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 636,002

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 May 12, 2025.

F9 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $256.25 to a high of $257.19. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 100 $255.00 $25,500.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 9

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 637,002

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 May 12, 2025.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 100 $253.40 $25,340.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 8

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 637,102

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 May 12, 2025.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,000 $252.15 $252,151.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 7

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 637,202

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 May 12, 2025.

F8 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $252.00 to a high of $252.68. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 200 $249.49 $49,897.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 6

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 638,202

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 May 12, 2025.

F7 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $249.39 to a high of $249.58. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,100 $248.95 $273,846.98
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 5

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 638,402

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 May 12, 2025.

F6 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $248.24 to a high of $249.16. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,005 $247.26 $248,499.92
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 4

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 639,502

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 May 12, 2025.

F5 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $246.98 to a high of $247.82. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 800 $245.01 $196,004.00
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 640,507

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 May 12, 2025.

F4 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $244.66 to a high of $245.29. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,298 $243.50 $316,065.99
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 641,307

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 May 12, 2025.

F3 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $243.29 to a high of $243.52. 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
February 02, 2026 Filed Feb 4, 2026 23:17 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 981 $242.23 $237,626.75
Disclosure

SEC source: 0001266824-26-000005 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 642,605

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 May 12, 2025.

F2 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $242.02 to a high of $242.68. 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 20, 2025 Filed Dec 22, 2025 21:51 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 43.9593 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000292 · edgardoc.xml · derivative · entry 4

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,027.7847

Underlying: Common Stock · 43.9593 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
December 20, 2025 Filed Dec 22, 2025 21:51 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 967 $181.08 $175,104.36
Disclosure

SEC source: 0001266824-25-000292 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 643,586

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
December 20, 2025 Filed Dec 22, 2025 21:51 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 43 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000292 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 644,553

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
December 18, 2025 Filed Dec 22, 2025 21:51 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 255.2194 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000292 · edgardoc.xml · derivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,071.744

Underlying: Common Stock · 255.2194 shares

Expires not disclosed

F3 · 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.

F3 · 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.

F3 · 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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November 25, 2025 Filed Nov 26, 2025 21:36 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 21.2584 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000256 · edgardoc.xml · derivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 816.5246

Underlying: Common Stock · 21.2584 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
November 25, 2025 Filed Nov 26, 2025 21:36 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 374 $155.41 $58,123.34
Disclosure

SEC source: 0001266824-25-000256 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 644,510

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
November 25, 2025 Filed Nov 26, 2025 21:36 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 21 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000256 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 644,884

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
November 21, 2025 Filed Nov 24, 2025 22:45 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 16.5977 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000244 · edgardoc.xml · derivative · entry 6

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 837.783

Underlying: Common Stock · 16.5977 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
November 21, 2025 Filed Nov 24, 2025 22:45 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 524 $139.19 $72,935.56
Disclosure

SEC source: 0001266824-25-000244 · edgardoc.xml · nonDerivative · entry 4

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 644,863

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
November 21, 2025 Filed Nov 24, 2025 22:45 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 16 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000244 · edgardoc.xml · nonDerivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 645,387

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
November 20, 2025 Filed Nov 24, 2025 22:45 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 8.8034 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000244 · edgardoc.xml · derivative · entry 5

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 854.3807

Underlying: Common Stock · 0 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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.exercise_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

F1 · derivative.expiration_date: The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
November 20, 2025 Filed Nov 24, 2025 22:45 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 104 $140.23 $14,583.92
Disclosure

SEC source: 0001266824-25-000244 · edgardoc.xml · nonDerivative · entry 2

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 645,371

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
November 20, 2025 Filed Nov 24, 2025 22:45 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 8 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000244 · edgardoc.xml · nonDerivative · entry 1

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 645,475

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 equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Read SEC document
November 03, 2025 Filed Nov 5, 2025 23:14 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 1,495 $153.93 $230,126.70
Disclosure

SEC source: 0001266824-25-000215 · edgardoc.xml · nonDerivative · entry 6

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 645,467

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 May 12, 2025.

F7 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $153.75 to a high of $154.30. 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 03, 2025 Filed Nov 5, 2025 23:14 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,500 $153.18 $382,958.50
Disclosure

SEC source: 0001266824-25-000215 · edgardoc.xml · nonDerivative · entry 5

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 646,962

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 May 12, 2025.

F6 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $152.73 to a high of $153.72. 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 03, 2025 Filed Nov 5, 2025 23:14 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 2,927 $152.24 $445,616.72
Disclosure

SEC source: 0001266824-25-000215 · edgardoc.xml · nonDerivative · entry 4

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 649,462

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 May 12, 2025.

F5 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $151.655 to a high of $152.30. 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 03, 2025 Filed Nov 5, 2025 23:14 UTC WESTERN DIGITAL CORP WDC · Entity 1010 SaleCommon Stock 700 $150.90 $105,632.52
Disclosure

SEC source: 0001266824-25-000215 · edgardoc.xml · nonDerivative · entry 3

Tan Irving · CIK 0001729518 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 652,389

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 May 12, 2025.

F4 · price: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $150.50 to a high of $151.335. 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

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