STX

SEC source: 0001137789-21-000121 · wf-form4_163494749228776.xml · nonDerivative · entry 1

ZANDER EDWARD J · CIK 0001251587 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,847

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: 0001137789-21-000120 · wf-form4_163494747650514.xml · derivative · entry 4

Tilenius Stephanie · CIK 0001534995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,162

Underlying: Ordinary Shares · 3,162 shares

Expires not disclosed

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

SEC source: 0001137789-21-000120 · wf-form4_163494747650514.xml · derivative · entry 3

Tilenius Stephanie · CIK 0001534995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 5,847 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: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

F2 · derivative.expiration_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

SEC source: 0001137789-21-000120 · wf-form4_163494747650514.xml · nonDerivative · entry 2

Tilenius Stephanie · CIK 0001534995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,210

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000120 · wf-form4_163494747650514.xml · nonDerivative · entry 1

Tilenius Stephanie · CIK 0001534995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,315

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: 0001137789-21-000119 · wf-form4_163494745828790.xml · derivative · entry 4

Geldmacher Jay L · CIK 0001462488 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,162

Underlying: Ordinary Shares · 3,162 shares

Expires not disclosed

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

SEC source: 0001137789-21-000119 · wf-form4_163494745828790.xml · derivative · entry 3

Geldmacher Jay L · CIK 0001462488 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 5,847 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: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

F2 · derivative.expiration_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

SEC source: 0001137789-21-000119 · wf-form4_163494745828790.xml · nonDerivative · entry 2

Geldmacher Jay L · CIK 0001462488 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,025

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000119 · wf-form4_163494745828790.xml · nonDerivative · entry 1

Geldmacher Jay L · CIK 0001462488 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,130

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: 0001137789-21-000115 · wf-form4_163494723864334.xml · derivative · entry 5

CANNON MICHAEL R · CIK 0001201489 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,024

Underlying: Ordinary Shares · 4,024 shares

Expires not disclosed

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

SEC source: 0001137789-21-000115 · wf-form4_163494723864334.xml · derivative · entry 4

CANNON MICHAEL R · CIK 0001201489 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 5,847 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: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

F2 · derivative.expiration_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

SEC source: 0001137789-21-000115 · wf-form4_163494723864334.xml · nonDerivative · entry 2

CANNON MICHAEL R · CIK 0001201489 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,917

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000115 · wf-form4_163494723864334.xml · nonDerivative · entry 1

CANNON MICHAEL R · CIK 0001201489 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,022

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

SEC source: 0001137789-21-000113 · wf-form4_163494718421855.xml · derivative · entry 4

BHATT PRAT · CIK 0001469167 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,162

Underlying: Ordinary Shares · 3,162 shares

Expires not disclosed

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

SEC source: 0001137789-21-000113 · wf-form4_163494718421855.xml · derivative · entry 3

BHATT PRAT · CIK 0001469167 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 4,838 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: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

F2 · derivative.expiration_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

SEC source: 0001137789-21-000113 · wf-form4_163494718421855.xml · nonDerivative · entry 2

BHATT PRAT · CIK 0001469167 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,096

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000113 · wf-form4_163494718421855.xml · nonDerivative · entry 1

BHATT PRAT · CIK 0001469167 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,838

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: 0001137789-21-000109 · wf-form4_163494696539707.xml · derivative · entry 4

Arumugavelu Shankar · CIK 0001854908 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,162

Underlying: Ordinary Shares · 3,162 shares

Expires not disclosed

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

SEC source: 0001137789-21-000109 · wf-form4_163494696539707.xml · derivative · entry 3

Arumugavelu Shankar · CIK 0001854908 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 2,896 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: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

F2 · derivative.expiration_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

SEC source: 0001137789-21-000109 · wf-form4_163494696539707.xml · nonDerivative · entry 2

Arumugavelu Shankar · CIK 0001854908 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,853

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000109 · wf-form4_163494696539707.xml · nonDerivative · entry 1

Arumugavelu Shankar · CIK 0001854908 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,896

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: 0001137789-21-000107 · wf-form4_163494670636428.xml · derivative · entry 4

Adams Mark · CIK 0001349123 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,162

Underlying: Ordinary Shares · 3,162 shares

Expires not disclosed

F5 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

F5 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending on July 1, 2022 provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

SEC source: 0001137789-21-000107 · wf-form4_163494670636428.xml · derivative · entry 3

Adams Mark · CIK 0001349123 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 5,847 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.

F4 · derivative.exercise_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

F4 · derivative.expiration_date: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. The award vested on the date of the annual general meeting of the shareholders of the Issuer following the end of the fiscal year ending July 2, 2021.

SEC source: 0001137789-21-000107 · wf-form4_163494670636428.xml · nonDerivative · entry 2

Adams Mark · CIK 0001349123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Adams Family Trust DTD 10/27/2000

Disclosed balance after: 19,285

F2 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

F1 · balance_after: On October 20, 2021, the Reporting Person transferred 3,742 Ordinary Shares previously owned directly (5,847 Ordinary Shares vested on October 20, 2021 minus 2,105 Ordinary Shares withheld to cover tax liabilities) to Mark Woolsey Adams and Maureen Madden Adams, Trustees Adams Family Trust DTD 10/27/2000 ("Adams Family Trust DTD 10/27/2000")

F3 · ownership.nature: All shares previously reported as directly held by the Reporting Person were transferred following acquisition to the Adams Family Trust DTD 10/27/2000, over which the Reporting Person serves as co-trustee.

SEC source: 0001137789-21-000107 · wf-form4_163494670636428.xml · nonDerivative · entry 1

Adams Mark · CIK 0001349123 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,847

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 · balance_after: On October 20, 2021, the Reporting Person transferred 3,742 Ordinary Shares previously owned directly (5,847 Ordinary Shares vested on October 20, 2021 minus 2,105 Ordinary Shares withheld to cover tax liabilities) to Mark Woolsey Adams and Maureen Madden Adams, Trustees Adams Family Trust DTD 10/27/2000 ("Adams Family Trust DTD 10/27/2000")

SEC source: 0001137789-21-000130 · wf-form4_163650546520351.xml · nonDerivative · entry 2

Naik Ravi · CIK 0001845312 · EVP & CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,374.7239

SEC source: 0001137789-21-000101 · wf-form4_163356202767224.xml · derivative · entry 8

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,446

Underlying: Ordinary Shares · 4,468 shares

Expires 2026-09-09

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.

F6 · derivative.exercise_date: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One quarter of the options vested on September 9, 2020. Subject to the Reporting Person's continuousemployment, the remaining options will vest in equal monthly installments over the 36 months following September 9, 2020.

F6 · derivative.expiration_date: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One quarter of the options vested on September 9, 2020. Subject to the Reporting Person's continuousemployment, the remaining options will vest in equal monthly installments over the 36 months following September 9, 2020.

SEC source: 0001137789-21-000101 · wf-form4_163356202767224.xml · derivative · entry 7

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,025

Underlying: Ordinary Shares · 9,675 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.

F5 · derivative.exercise_date: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One quarter of the options vested on September 9, 2021. Subject to the Reporting Person's continuous employment, the remaining options will vest in equal monthly installments over the 36 months following September 9, 2021.

F5 · derivative.expiration_date: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One quarter of the options vested on September 9, 2021. Subject to the Reporting Person's continuous employment, the remaining options will vest in equal monthly installments over the 36 months following September 9, 2021.

SEC source: 0001137789-21-000101 · wf-form4_163356202767224.xml · derivative · entry 6

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,788

Underlying: Ordinary Shares · 11,996 shares

Expires 2026-02-20

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: Options granted to the Reporting Person under the Seagate Technology plc 2012 Equity Incentive Plan (the "Plan") are subject to a four-year vesting schedule. One quarter of the options vested on February 20,2020. Subject to the Reporting Person's continuous employment, the remaining options vest in equal monthly installments over the 36 months following February 20, 2020.

F4 · derivative.expiration_date: Options granted to the Reporting Person under the Seagate Technology plc 2012 Equity Incentive Plan (the "Plan") are subject to a four-year vesting schedule. One quarter of the options vested on February 20,2020. Subject to the Reporting Person's continuous employment, the remaining options vest in equal monthly installments over the 36 months following February 20, 2020.

SEC source: 0001137789-21-000101 · wf-form4_163356202767224.xml · nonDerivative · entry 5

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,514

F1 · shares: The option exercises and sales of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $84.62 to $85.55. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes toprovide 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: 0001137789-21-000101 · wf-form4_163356202767224.xml · nonDerivative · entry 4

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,091

F1 · shares: The option exercises and sales of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: These Ordinary Shares were sold in multiple trades at prices ranging from $83.59 to $84.58. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes toprovide 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: 0001137789-21-000101 · wf-form4_163356202767224.xml · nonDerivative · entry 3

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,653

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 exercises and sales of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001137789-21-000101 · wf-form4_163356202767224.xml · nonDerivative · entry 2

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,185

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 exercises and sales of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001137789-21-000101 · wf-form4_163356202767224.xml · nonDerivative · entry 1

Romano Gianluca · CIK 0001764650 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,510

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 exercises and sales of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · nonDerivative · entry 5

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,710

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · derivative · entry 7

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 1,037 shares

Expires 2024-09-11

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: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 11, 2018, and the remaining options vested in equal monthly installments over the 36 months following September 11, 2018.

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · nonDerivative · entry 4

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,333

F1 · shares: The (i) option exercise and sale of Ordinary Shares and (ii) the sale of Ordinary Shares each reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · nonDerivative · entry 3

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,118

F1 · shares: The (i) option exercise and sale of Ordinary Shares and (ii) the sale of Ordinary Shares each reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · nonDerivative · entry 2

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,155

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 (i) option exercise and sale of Ordinary Shares and (ii) the sale of Ordinary Shares each reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · derivative · entry 6

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 623 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_price: Each restricted share unit ("RSU") represents a contingent right to receive one Ordinary Share of the Issuer.

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan (the "Plan"). Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 11, 2017 and each one year anniversary thereafter.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan (the "Plan"). Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 11, 2017 and each one year anniversary thereafter.

SEC source: 0001137789-21-000099 · wf-form4_163174804106180.xml · nonDerivative · entry 1

Teh Ban Seng · CIK 0001801425 · EVP, Global Sales

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,118

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: 0001137789-21-000097 · wf-form4_163174792783478.xml · derivative · entry 4

Nygaard Jeffrey D. · CIK 0001720273 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 2,488 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_price: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer.

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 11, 2018 and each one-year anniversary thereafter.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 11, 2018 and each one-year anniversary thereafter.

SEC source: 0001137789-21-000097 · wf-form4_163174792783478.xml · nonDerivative · entry 2

Nygaard Jeffrey D. · CIK 0001720273 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,950

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000097 · wf-form4_163174792783478.xml · nonDerivative · entry 1

Nygaard Jeffrey D. · CIK 0001720273 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,043

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: 0001137789-21-000095 · wf-form4_163174771112406.xml · nonDerivative · entry 1

MOSLEY WILLIAM D · CIK 0001388390 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 521,761

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of securities previously reported on one or more Forms 4 by the Reporting Person in accordance with Rule 16b-3.

SEC source: 0001137789-21-000093 · wf-form4_163174758741793.xml · derivative · entry 3

Fochtman Jeffrey D. · CIK 0001811019 · SVP, Business & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 1,148 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_price: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer.

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 11, 2018 and each one-year anniversary thereafter.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 11, 2018 and each one-year anniversary thereafter.

SEC source: 0001137789-21-000093 · wf-form4_163174758741793.xml · nonDerivative · entry 2

Fochtman Jeffrey D. · CIK 0001811019 · SVP, Business & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,548

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").

SEC source: 0001137789-21-000093 · wf-form4_163174758741793.xml · nonDerivative · entry 1

Fochtman Jeffrey D. · CIK 0001811019 · SVP, Business & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,118

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: 0001137789-21-000091 · wf-form4_163166228358124.xml · derivative · entry 3

Fochtman Jeffrey D. · CIK 0001811019 · SVP, Business & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,620

Underlying: Ordinary Shares · 1,620 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_price: Each RSU represents a contingent right to receive one Ordinary Share of the Issuer.

F3 · derivative.exercise_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on September 10, 2019 and each one-year anniversary thereafter.

F3 · derivative.expiration_date: Consists of a grant of RSUs awarded to the Reporting Person under the Amended and Restated Seagate Technology Holdings plc 2012 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on September 10, 2019 and each one-year anniversary thereafter.

SEC source: 0001137789-21-000091 · wf-form4_163166228358124.xml · nonDerivative · entry 2

Fochtman Jeffrey D. · CIK 0001811019 · SVP, Business & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,970

F1 · shares: These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").