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person · Reporting owner

MOSLEY WILLIAM D

Disclosed activity across 2 companies

Tapewire entity
2030
SEC CIK
0001388390

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
CIRRUS LOGIC, INC.CRUS · Entity 3854DirectorJuly 29, 2026July 31, 2026
Seagate Technology Holdings plcSTX · Entity 2029Director · CEOOctober 01, 2026October 03, 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.

CIRRUS LOGIC, INC.

Report date July 29, 2026 · Filed July 31, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect3,622 Reported balance After 2026-07-29 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-07-29 · Grant · Acquired 1,998 · Balance 3,622

F1: Each restricted stock unit was the economic equivalent of one share of common stock. The restricted stock unit vested on July 29, 2026.

F2: Expiration Date of July 29, 2026.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-07-29 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-07-29 · Exercise / conversion · Disposed 1,998 · Balance 0

F1: Each restricted stock unit was the economic equivalent of one share of common stock. The restricted stock unit vested on July 29, 2026.

F2: Expiration Date of July 29, 2026.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect1,623 Reported balance After 2026-07-31 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-07-31 · Grant · Acquired 1,623 · Balance 1,623

F3: Each restricted stock unit represents a contingent right to receive one share of Cirrus Logic common stock.

F4: Restricted Stock Units granted upon re-election to Cirrus Logic, Inc.'s Board of Directors.

F5: 100% of the restricted stock units will vest on the earlier of: (a) the date of the Company's next Annual Meeting or (b) on July 31, 2027, the 1-year anniversary of the grant date.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit was the economic equivalent of one share of common stock. The restricted stock unit vested on July 29, 2026.

F2: Expiration Date of July 29, 2026.

F3: Each restricted stock unit represents a contingent right to receive one share of Cirrus Logic common stock.

F4: Restricted Stock Units granted upon re-election to Cirrus Logic, Inc.'s Board of Directors.

F5: 100% of the restricted stock units will vest on the earlier of: (a) the date of the Company's next Annual Meeting or (b) on July 31, 2027, the 1-year anniversary of the grant date.

Seagate Technology Holdings plc

Report date October 01, 2026 · Filed October 03, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Ordinary SharesSEC Table I · non-derivativeDirect362,108.25 Ending reported balance After 2026-10-01 transaction · row 16
16 source rows · reconciled sequence

Row 1 · 2026-10-01 · Sale · Disposed 360 · Balance 372,750.25

F1: All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026.

F2: These Ordinary Shares were sold in multiple trades at prices ranging from $928.44 to $929.30. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 2 · 2026-10-01 · Sale · Disposed 855 · Balance 371,895.25

F3: These Ordinary Shares were sold in multiple trades at prices ranging from $929.51 to $930.50. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 3 · 2026-10-01 · Sale · Disposed 1,665 · Balance 370,230.25

F4: These Ordinary Shares were sold in multiple trades at prices ranging from $930.53 to $931.48. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 4 · 2026-10-01 · Sale · Disposed 1,320 · Balance 368,910.25

F5: These Ordinary Shares were sold in multiple trades at prices ranging from $931.56 to $932.55. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 5 · 2026-10-01 · Sale · Disposed 840 · Balance 368,070.25

F6: These Ordinary Shares were sold in multiple trades at prices ranging from $932.73 to $933.67. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 6 · 2026-10-01 · Sale · Disposed 822 · Balance 367,248.25

F7: These Ordinary Shares were sold in multiple trades at prices ranging from $933.77 to $934.76. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 7 · 2026-10-01 · Sale · Disposed 640 · Balance 366,608.25

F8: These Ordinary Shares were sold in multiple trades at prices ranging from $934.83 to $935.70. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 8 · 2026-10-01 · Sale · Disposed 759 · Balance 365,849.25

F9: These Ordinary Shares were sold in multiple trades at prices ranging from $935.84 to $936.80. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 9 · 2026-10-01 · Sale · Disposed 579 · Balance 365,270.25

F10: These Ordinary Shares were sold in multiple trades at prices ranging from $936.88 to $937.83. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 10 · 2026-10-01 · Sale · Disposed 640 · Balance 364,630.25

F11: These Ordinary Shares were sold in multiple trades at prices ranging from $937.91 to $938.67. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 11 · 2026-10-01 · Sale · Disposed 720 · Balance 363,910.25

F12: These Ordinary Shares were sold in multiple trades at prices ranging from $938.92 to $939.89. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 12 · 2026-10-01 · Sale · Disposed 80 · Balance 363,830.25

F13: These Ordinary Shares were sold in multiple trades at prices ranging from $940.19 to $940.21. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 13 · 2026-10-01 · Sale · Disposed 40 · Balance 363,790.25

Row 14 · 2026-10-01 · Sale · Disposed 280 · Balance 363,510.25

F14: These Ordinary Shares were sold in multiple trades at prices ranging from $942.72 to $943.68. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 15 · 2026-10-01 · Sale · Disposed 440 · Balance 363,070.25

F15: These Ordinary Shares were sold in multiple trades at prices ranging from $944.50 to $945.46. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Row 16 · 2026-10-01 · Sale · Disposed 962 · Balance 362,108.25

F16: These Ordinary Shares were sold in multiple trades at prices ranging from $945.60 to $946.34. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Filing footnotes · ownership attribution and instrument terms

F1: All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026.

F2: These Ordinary Shares were sold in multiple trades at prices ranging from $928.44 to $929.30. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F3: These Ordinary Shares were sold in multiple trades at prices ranging from $929.51 to $930.50. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F4: These Ordinary Shares were sold in multiple trades at prices ranging from $930.53 to $931.48. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F5: These Ordinary Shares were sold in multiple trades at prices ranging from $931.56 to $932.55. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F6: These Ordinary Shares were sold in multiple trades at prices ranging from $932.73 to $933.67. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F7: These Ordinary Shares were sold in multiple trades at prices ranging from $933.77 to $934.76. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F8: These Ordinary Shares were sold in multiple trades at prices ranging from $934.83 to $935.70. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F9: These Ordinary Shares were sold in multiple trades at prices ranging from $935.84 to $936.80. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F10: These Ordinary Shares were sold in multiple trades at prices ranging from $936.88 to $937.83. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F11: These Ordinary Shares were sold in multiple trades at prices ranging from $937.91 to $938.67. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F12: These Ordinary Shares were sold in multiple trades at prices ranging from $938.92 to $939.89. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F13: These Ordinary Shares were sold in multiple trades at prices ranging from $940.19 to $940.21. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F14: These Ordinary Shares were sold in multiple trades at prices ranging from $942.72 to $943.68. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F15: These Ordinary Shares were sold in multiple trades at prices ranging from $944.50 to $945.46. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

F16: These Ordinary Shares were sold in multiple trades at prices ranging from $945.60 to $946.34. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

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
September 11, 2026 Filed Sep 15, 2026 20:15 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionRestricted Share Unit · Derivative 3,319 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000239 · wk-form4_1789503334.xml · derivative · entry 3

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,276

Underlying: Ordinary Shares · 3,319 shares

Expires not disclosed

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

F2 · derivative.exercise_date: Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. One-quarter of the shares vested on September 11, 2024 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

F2 · derivative.expiration_date: Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. One-quarter of the shares vested on September 11, 2024 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

Read SEC document
September 11, 2026 Filed Sep 15, 2026 20:15 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 3,319 $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000239 · wk-form4_1789503334.xml · nonDerivative · entry 1

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 300,867.25

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.

Read SEC document
September 10, 2026 Filed Sep 11, 2026 20:46 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,315.75 $862.14 $1,134,354.26
Disclosure

SEC source: 0001137789-26-000222 · wk-form4_1789159604.xml · nonDerivative · entry 4

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 297,548.25

Read SEC document
September 10, 2026 Filed Sep 11, 2026 20:46 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,533.5 $862.13 $1,322,082.03
Disclosure

SEC source: 0001137789-26-000222 · wk-form4_1789159604.xml · nonDerivative · entry 2

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 296,449

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:46 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionRestricted Share Unit · Derivative 2,415 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000222 · wk-form4_1789159604.xml · derivative · entry 6

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,328

Underlying: Ordinary Shares · 2,415 shares

Expires not disclosed

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

F2 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. One-quarter of the shares vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

F2 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. One-quarter of the shares vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:46 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionRestricted Share Unit · Derivative 2,815 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000222 · wk-form4_1789159604.xml · derivative · entry 5

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 2,815 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_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan"). One-quarter of the shares vested on September 9, 2023 and the remaining portion vested in equal quarterly installments over the following three years for a total vesting period of four years.

F1 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan"). One-quarter of the shares vested on September 9, 2023 and the remaining portion vested in equal quarterly installments over the following three years for a total vesting period of four years.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:46 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 2,415 $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000222 · wk-form4_1789159604.xml · nonDerivative · entry 3

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 298,864

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.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:46 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 2,815 $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000222 · wk-form4_1789159604.xml · nonDerivative · entry 1

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 297,982.5

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.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionNQ Options · Derivative 14,000 $0.00 Strike: $46.23 $0.00
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · derivative · entry 28

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,100

Underlying: Ordinary Shares · 14,000 shares

Expires 2027-09-09

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.

F28 · derivative.exercise_date: Options granted to the Reporting Person are subject to a four year vesting schedule. One quarter of the option shares vested on September 9, 2021. The remaining option shares vest in equal monthly installments over the 36 months following September 9, 2021.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 80 $832.05 $66,563.60
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 27

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,167.5

F27 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $832.02 to $832.07. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 80 $830.36 $66,428.80
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 26

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,247.5

F26 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $830.22 to $830.50. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 80 $829.10 $66,327.60
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 25

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,327.5

F25 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $829.09 to $829.10. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 120 $827.90 $99,347.60
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 24

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,407.5

F24 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $827.76 to $828.17. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 340 $826.86 $281,132.40
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 23

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,527.5

F23 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $826.52 to $827.29. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 580 $826.00 $479,079.01
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 22

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,867.5

F22 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $825.51 to $826.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 600 $824.93 $494,960.82
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 21

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 296,447.5

F21 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $824.47 to $825.44. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,240 $824.05 $1,021,820.02
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 20

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 297,047.5

F20 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $823.47 to $824.40. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 600 $822.89 $493,734.00
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 19

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 298,287.5

F19 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $822.47 to $823.42. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 480 $822.05 $394,583.86
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 18

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 298,887.5

F18 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $821.44 to $822.37. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 920 $820.89 $755,221.56
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 17

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 299,367.5

F17 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $820.36 to $821.26. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,320 $819.84 $1,082,194.34
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 16

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 300,287.5

F16 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $819.32 to $820.29. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,040 $818.78 $851,533.38
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 15

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 301,607.5

F15 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $818.29 to $819.18. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 2,080 $817.71 $1,700,829.10
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 14

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 302,647.5

F14 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $817.29 to $818.20. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 4,287 $816.75 $3,501,391.39
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 13

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 304,727.5

F13 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $816.28 to $817.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 4,555 $815.75 $3,715,738.06
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 12

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 309,014.5

F12 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $815.28 to $816.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 2,878 $814.75 $2,344,852.51
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 11

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 313,569.5

F11 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $814.23 to $815.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 2,040 $813.74 $1,660,027.15
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 10

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 316,447.5

F10 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $813.20 to $814.19. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,200 $812.55 $975,056.76
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 9

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 318,487.5

F9 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $812.19 to $813.04. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,578 $811.73 $1,280,906.15
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 8

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 319,687.5

F8 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $811.18 to $812.10. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,105 $810.78 $895,915.55
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 7

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 321,265.5

F7 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $810.17 to $811.14. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 1,160 $809.55 $939,079.62
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 6

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 322,370.5

F6 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $809.05 to $810.01. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 960 $808.62 $776,275.30
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 5

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 323,530.5

F5 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $808.02 to $809.00. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 160 $807.19 $129,150.80
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 4

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 324,490.5

F4 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $806.93 to $807.42. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 160 $805.55 $128,887.70
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 3

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 324,650.5

F3 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $805.21 to $805.76. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 357 $804.61 $287,245.16
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 2

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 324,810.5

F2 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $804.17 to $804.83. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:51 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 14,000 $46.23 $647,220.00
Disclosure

SEC source: 0001137789-26-000197 · wk-form4_1788468683.xml · nonDerivative · entry 1

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 325,167.5

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: All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026.

Read SEC document
August 21, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 3,392.75 $849.35 $2,881,648.50
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · nonDerivative · entry 6

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 311,167.5

Read SEC document
August 21, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 11,308 $849.35 $9,604,504.08
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · nonDerivative · entry 4

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 308,240.25

Read SEC document
August 21, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 3,437.75 $849.35 $2,919,869.46
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · nonDerivative · entry 2

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 298,483.25

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 GrantNQ Stock Option · Derivative 31,856 $0.00 Strike: $850.24 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 13

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,856

Underlying: Ordinary Shares · 31,856 shares

Expires 2033-08-20

F5 · derivative.exercise_date: Consists of Options awarded to the Reporting Person under the Plan subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such Options vest as to one-quarter of the shares on August 20, 2027 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 GrantRestricted Share Unit · Derivative 1,584 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 12

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,584

Underlying: Ordinary Shares · 1,584 shares

Expires not disclosed

F4 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs will vest on the first anniversary of the grant date, August 20, 2027.

F4 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs will vest on the first anniversary of the grant date, August 20, 2027.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 GrantRestricted Share Unit · Derivative 5,280 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 11

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,280

Underlying: Ordinary Shares · 5,280 shares

Expires not disclosed

F4 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs will vest on the first anniversary of the grant date, August 20, 2027.

F4 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs will vest on the first anniversary of the grant date, August 20, 2027.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 GrantRestricted Share Unit · Derivative 5,309 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 10

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,309

Underlying: Ordinary Shares · 5,309 shares

Expires not disclosed

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2027 and then in equal quarterly installments thereafter.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2027 and then in equal quarterly installments thereafter.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionRestricted Share Unit · Derivative 21,065 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 9

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 21,065 shares

Expires not disclosed

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

F2 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. 100% of such RSUs vested on the first anniversary of the grant date, August 20, 2026.

F2 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. 100% of such RSUs vested on the first anniversary of the grant date, August 20, 2026.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionRestricted Share Unit · Derivative 6,320 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 8

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 6,320 shares

Expires not disclosed

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

F2 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. 100% of such RSUs vested on the first anniversary of the grant date, August 20, 2026.

F2 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Plan. 100% of such RSUs vested on the first anniversary of the grant date, August 20, 2026.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionRestricted Share Unit · Derivative 6,404 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · derivative · entry 7

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,213

Underlying: Ordinary Shares · 6,404 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_date: Consists of a grant of Restricted Share Unit (RSU) awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan") subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2026 and then in equal quarterly installments thereafter.

F1 · derivative.expiration_date: Consists of a grant of Restricted Share Unit (RSU) awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan") subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2026 and then in equal quarterly installments thereafter.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 6,320 $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · nonDerivative · entry 5

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 314,560.25

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.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 21,065 $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · nonDerivative · entry 3

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 319,548.25

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.

Read SEC document
August 20, 2026 Filed Aug 24, 2026 21:10 UTC Seagate Technology Holdings plc STX · Entity 2029 Exercise / conversionOrdinary Shares 6,404 $0.00 $0.00
Disclosure

SEC source: 0001137789-26-000182 · wk-form4_1787605850.xml · nonDerivative · entry 1

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 301,921

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.

Read SEC document
August 03, 2026 Filed Aug 4, 2026 22:09 UTC Seagate Technology Holdings plc STX · Entity 2029 SaleOrdinary Shares 80 $837.98 $67,038.40
Disclosure

SEC source: 0001137789-26-000164 · wk-form4_1785881377.xml · nonDerivative · entry 19

MOSLEY WILLIAM D · CIK 0001388390 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,517

F20 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $837.97 to $837.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.

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.