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Tregillis Cynthia L

Disclosed activity across 1 company

Tapewire entity
14219
SEC CIK
0002057088

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
WESTERN DIGITAL CORPWDC · Entity 1010Chief Legal Officer & Corp SecSeptember 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.

WESTERN DIGITAL CORP

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Dividend Equivalent RightsSEC Table II · derivative / convertible securityDirect297.8619 Reported balance After 2026-09-17 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-09-17 · Grant · Acquired 27.38 · Balance 297.8619

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

Filing footnotes · ownership attribution and instrument terms

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

Transaction history

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

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

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
July 20, 2025 Filed Jul 22, 2025 21:27 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,306 $68.00 $88,808.00
Disclosure

SEC source: 0001266824-25-000134 · edgardoc.xml · nonDerivative · entry 2

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,383

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
July 20, 2025 Filed Jul 22, 2025 21:27 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 5 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000134 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,689

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

F1 · 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.

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June 20, 2025 Filed Jun 23, 2025 22:12 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionDividend Equivalent Rights · Derivative 0.8802 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000127 · edgardoc.xml · derivative · entry 4

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221.8422

Underlying: Common Stock · 0.8802 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.

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June 20, 2025 Filed Jun 23, 2025 22:12 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 204 $59.29 $12,095.16
Disclosure

SEC source: 0001266824-25-000127 · edgardoc.xml · nonDerivative · entry 2

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,684

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

Read SEC document
June 20, 2025 Filed Jun 23, 2025 22:12 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Exercise / conversionCommon Stock 0 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000127 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,888

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.

F2 · balance_after: Includes 227 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2025.

Read SEC document
June 18, 2025 Filed Jun 23, 2025 22:12 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantDividend Equivalent Rights · Derivative 222.7224 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000127 · edgardoc.xml · derivative · entry 3

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 222.7224

Underlying: Common Stock · 222.7224 shares

Expires not disclosed

F4 · 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.

F4 · 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.

F4 · 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
May 27, 2025 Filed May 28, 2025 20:50 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 267 $51.82 $13,835.94
Disclosure

SEC source: 0001266824-25-000084 · edgardoc.xml · nonDerivative · entry 2

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,661

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 25, 2025 Filed May 28, 2025 20:50 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 768 $50.18 $38,538.24
Disclosure

SEC source: 0001266824-25-000084 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,928

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 20, 2025 Filed May 22, 2025 20:57 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 379 $50.63 $19,188.77
Disclosure

SEC source: 0001266824-25-000074 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,696

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 20, 2025 Filed Apr 22, 2025 22:07 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 1,172 $36.51 $42,789.72
Disclosure

SEC source: 0001266824-25-000055 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 159,075

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
March 06, 2025 Filed Mar 10, 2025 22:11 UTC WESTERN DIGITAL CORP WDC · Entity 1010 Tax withholdingCommon Stock 875 $41.45 $36,268.75
Disclosure

SEC source: 0001266824-25-000039 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,247

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
March 03, 2025 Filed Mar 5, 2025 22:11 UTC WESTERN DIGITAL CORP WDC · Entity 1010 GrantCommon Stock 21,272 $0.00 $0.00
Disclosure

SEC source: 0001266824-25-000030 · edgardoc.xml · nonDerivative · entry 1

Tregillis Cynthia L · CIK 0002057088 · CLO and Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,122

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

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