STX

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · derivative · entry 28

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,775

Underlying: Ordinary Shares · 1,775 shares

Expires not disclosed

F22 · 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 Options vested as to one-quarter of the shares on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

F22 · 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 Options vested as to one-quarter of the shares on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · derivative · entry 27

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,144

Underlying: Ordinary Shares · 6,048 shares

Expires 2032-08-20

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.

F21 · derivative.exercise_date: Consist of Options awarded to the Reporting Person under Plan are subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, one-quarter of the shares vested on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · derivative · entry 26

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 2,279 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.

F20 · 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 vested on the first anniversary of the grant date, August 20, 2026.

F20 · 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 vested on the first anniversary of the grant date, August 20, 2026.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · derivative · entry 25

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 7,595 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.

F20 · 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 vested on the first anniversary of the grant date, August 20, 2026.

F20 · 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 vested on the first anniversary of the grant date, August 20, 2026.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · derivative · entry 24

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,804

Underlying: Ordinary Shares · 2,267 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.

F19 · 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.

F19 · 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 23

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,072

F18 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $852.55 to $853.01. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 22

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,682

F17 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $851.24 to $852.11. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 21

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,312

F16 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $850.11 to $850.73. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 20

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,592

F15 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $848.81 to $849.67. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 19

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,992

F14 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $847.23 to $847.69. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 18

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,152

F13 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $846.00 to $846.66. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 17

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,472

F12 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $845.00 to $845.58. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 16

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,398

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 15

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,438

F11 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $842.85 to $843.76. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 14

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,558

F10 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $841.10 to $841.91. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 13

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,718

F9 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $839.60 to $840.28 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 12

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,798

F8 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $838.00 to $838.78. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 11

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,918

F7 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $836.74 to $837.67. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 10

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,358

F6 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $835.50 to $836.08. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 9

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,040

F5 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $834.38 to $835.23. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 8

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,280

F4 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $833.11 to $833.98. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 7

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,560

F3 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $831.74 to $831.97. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 6

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,800

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 5

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,880

F2 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $829.17 to $830.15. 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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 4

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,120

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 option exercise and sale of all Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 11, 2026.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 3

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,072

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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 2

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,793

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.

SEC source: 0001137789-26-000187 · wk-form4_1787605884.xml · nonDerivative · entry 1

Teh Ban Seng · CIK 0001801425 · EVP & Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,198

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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 16

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,152

Underlying: Ordinary Shares · 6,152 shares

Expires 2033-08-20

F7 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 15

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 393

Underlying: Ordinary Shares · 393 shares

Expires not disclosed

F6 · 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.

F6 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 14

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,309

Underlying: Ordinary Shares · 1,309 shares

Expires not disclosed

F6 · 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.

F6 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 13

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,307

Underlying: Ordinary Shares · 2,307 shares

Expires not disclosed

F5 · 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.

F5 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 12

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,293

Underlying: Ordinary Shares · 523 shares

Expires 2032-08-20

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.

F4 · 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 vested as to one-quarter of the shares on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 11

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 1,221 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.

F3 · 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.

F3 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 10

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 4,070 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.

F3 · 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.

F3 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · derivative · entry 9

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,292

Underlying: Ordinary Shares · 1,764 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 (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.

F2 · 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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · nonDerivative · entry 8

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,459.75

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · nonDerivative · entry 7

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,982.75

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 option exercise and sale of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on January 29, 206.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · nonDerivative · entry 5

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,068.25

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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · nonDerivative · entry 3

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,875.25

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.

SEC source: 0001137789-26-000186 · wk-form4_1787605879.xml · nonDerivative · entry 1

Morris John Christopher · CIK 0001988271 · EVP & CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,684.25

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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 13

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,788

Underlying: Ordinary Shares · 3,788 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 12

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 403

Underlying: Ordinary Shares · 403 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 11

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,343

Underlying: Ordinary Shares · 1,343 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 10

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,420

Underlying: Ordinary Shares · 1,420 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 9

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 5,698 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 8

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 1,710 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · derivative · entry 7

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,536

Underlying: Ordinary Shares · 1,512 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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · nonDerivative · entry 5

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,844

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.

SEC source: 0001137789-26-000185 · wk-form4_1787605868.xml · nonDerivative · entry 3

Lee James CI · CIK 0001773423 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,901

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.