# EDGAR Filing Document

**Accession Number:** 0001137789
**File Stem:** 0001137789-26-000028
**Filing Date:** 2026-1
**Character Count:** 44343
**Document Hash:** 4542762fe53a7a6d8af952a9670adaaa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001137789-26-000028.hdr.sgml**: 20260130

**ACCESSION NUMBER**: 0001137789-26-000028

**CONFORMED SUBMISSION TYPE**: S-8

**PUBLIC DOCUMENT COUNT**: 14

**FILED AS OF DATE**: 20260130

**DATE AS OF CHANGE**: 20260130

**EFFECTIVENESS DATE**: 20260130

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Seagate Technology Holdings plc
- **CENTRAL INDEX KEY:** 0001137789
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMPUTER STORAGE DEVICES [3572]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 981597419
- **FISCAL YEAR END:** 0627

**FILING VALUES:**
- **FORM TYPE:** S-8
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-293100
- **FILM NUMBER:** 26584334

**BUSINESS ADDRESS:**
- **STREET 1:** 121 WOODLANDS AVENUE 5
- **CITY:** SINGAPORE
- **STATE:** U0
- **ZIP:** 739009
- **BUSINESS PHONE:** 65 6412 5172

**MAIL ADDRESS:**
- **STREET 1:** 121 WOODLANDS AVENUE 5
- **CITY:** SINGAPORE
- **STATE:** U0
- **ZIP:** 739009

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Seagate Technology plc
- **DATE OF NAME CHANGE:** 20100706

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Seagate Technology
- **DATE OF NAME CHANGE:** 20090330

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SEAGATE TECHNOLOGY
- **DATE OF NAME CHANGE:** 20021212

**As filed with the Securities and Exchange Commission on January 30, 2026**

**Registration No. 333-** 

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, D.C. 20549** 

**FORM S-8** 

**REGISTRATION STATEMENT** 

***UNDER***

***THE SECURITIES ACT OF 1933***

**SEAGATE TECHNOLOGY HOLDINGS** 

**PUBLIC LIMITED COMPANY** 

**(Exact name of registrant as specified in its charter)** 

---

| | |
|:---|:---|
| **Ireland** | **98-1597419** |
| **(State or other jurisdiction** | **(I.R.S. Employer** |
| **of incorporation or organization)** | **Identification Number)** |

---

**121 Woodlands Avenue 5** 

**Singapore 739009**

**(Address, including zip code, of Principal Executive Offices)** 

**Seagate Technology Holdings public limited company Amended and Restated Employee Stock Purchase Plan**

**Seagate Technology Holdings public limited company Amended and Restated 2022 Equity Incentive Plan** 

**(Full title of the plan)** 

**William D. Mosley** 

**Chief Executive Officer and Director** 

**Seagate Technology Holdings plc** 

**47488 Kato Rd** 

**Fremont, CA 94538** 

**(510) 661-1000** 

**(Name, address and telephone number, including area code, of agent for service)** 

***With copies to:***

---

| | |
|:---|:---|
| **James C. Lee, Esq.** | **Steven B. Stokdyk, Esq.** |
| **Executive Vice President, Chief Legal Officer and Company Secretary** | **Latham & Watkins LLP** |
| **Seagate Technology Holdings plc** | **10250 Constellation Blvd., Suite 1100** |
| **47488 Kato Rd** | **Los Angeles, California 90067** |
| **Fremont, CA 94538** | **(424) 653-5500** |
| **(510) 661-1000** |  |

---

------

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

---

| | | | |
|:---|:---|:---|:---|
| Large accelerated filer: | ☒ | Accelerated filer: | ☐ |
| Non-accelerated filer: | ☐ | Smaller reporting company: | ☐ |
| | | Emerging growth company: | ☐ |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

------

**EXPLANATORY NOTE** 

This Registration Statement on Form S-8 (this "Registration Statement") is being filed with the Securities and Exchange Commission (the "SEC") by Seagate Technology Holdings plc, a public limited company incorporated in Ireland (the "Registrant"), for the purpose of registering: (i) an additional 10,000,000 ordinary shares, par value $0.00001 per share of the Registrant (the "Ordinary Shares"), to be issued under the Seagate Technology Holdings public limited company Amended and Restated Employee Stock Purchase Plan (the "ESPP"), which was adopted by the Registrant's Board of Directors on July 26, 2025 and approved by the Registrant's shareholders on October 25, 2025, and (ii) an additional 3,800,000 Ordinary Shares, to be issued under the Seagate Technology Holdings public limited company 2022 Equity Incentive Plan, as amended and restated (the "2022 EIP" and, together with the ESPP, the "Plans"), which was adopted by the Registrant's Board of Directors on July 26, 2025 and approved by the Registrant's shareholders on October 25, 2025, and (iii) 1,050,686 Ordinary Shares that, in accordance with the 2022 EIP, have become available for issuance under the 2022 EIP to the extent that awards under the 2022 EIP have been terminated, cancelled or expired or any Ordinary Shares subject to such awards were reacquired by the Registrant.

The Ordinary Shares registered by this Registration Statement are of the same class as the securities relating to the Plans for which Registration Statements of Form S-8 (Registration Nos. 333-101789, 333-139434, 333-162958, 333-184704, 333-221831 and 333-260380) are effective (collectively, the "Prior Registration Statements"). Pursuant to General Instruction E of Form S-8, the contents of the Prior Registration Statements are incorporated by reference herein and made part of this Registration Statement to the extent not modified or superseded hereby or by any subsequently filed document, which is incorporated by reference herein or therein.

------

**PART II** 

**INFORMATION REQUIRED IN THE REGISTRATION STATEMENT** 

**Item 6. Indemnification of Directors and Officers.**

The constitution of the Registrant (the "Constitution") provides for the indemnification of its officers, directors and company secretary. Specifically, under the indemnification provisions, the Registrant will indemnify its officers, directors and company secretary to the fullest extent permitted by law against liabilities that are incurred by the officers, directors and company secretary while executing the duties of their respective offices. Under the Constitution, the Registrant's officers, directors and company secretary, however, will not be entitled to the indemnification by the Registrant if they incurred the liabilities through their own fraud, dishonesty or conscious, intentional or willful breach of the obligation to act honestly, lawfully and in good faith. In addition, the Irish Companies Act 2014 (as amended) prescribes that this indemnity only permits a company to pay the costs or discharge the liability of a director or the company secretary where judgment is given in his or her favor in any civil or criminal action in respect of such costs or liability, or where an Irish court grants relief because the director or company secretary acted honestly and reasonably and ought fairly to be excused. This restriction does not apply to officers who are not directors nor the company secretary of the Registrant. Any provision which seeks to indemnify a director or secretary of an Irish company over and above this shall be void under Irish law, whether contained in its constitution or any contract between the director or company secretary and such company.

The Registrant has entered into a deed of indemnity as to each of the Registrant's directors. In addition, one of the Registrant's subsidiaries has entered into an indemnification agreement as to each of the Registrant's directors, company secretary and certain of its officers (as may be determined by the board of directors of the Registrant from time to time). Each such deed or agreement provides for the indemnification of, and advancement of expenses to, such persons, to the fullest extent permitted by law. Each director, secretary or officer undertakes to the fullest extent required by law to repay all amounts advanced if it is ultimately determined that he or she is not entitled to such indemnification by the Registrant and/or its any of its subsidiaries.

The Registrant maintains insurance policies that indemnify its directors and officers against various liabilities arising under the Securities Act and the Exchange Act that might be incurred by any director or officer in his or her capacity as such.

**Item 8. Exhibits.** 

The following documents are filed as exhibits to this Registration Statement:

---

| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 4.1 | <u>[Certificate of Incorporation of Seagate Technology Holdings plc (Filed as Exhibit 3.1 to the Registrant's Annual Report on Form 10-K for the fiscal year ended July 2, 2020, filed on August 6, 2021 and incorporated herein by reference)](https://www.sec.gov/ix?doc=/Archives/edgar/data/0001137789/000113778921000049/stx-20210702.htm)</u> |
| 4.2 | <u>[Constitution of Seagate Technology Holdings public limited company (Filed as Exhibit 4.1 to the Registrant's Registration Statement on Form S-8 (File No. 333-260380) filed by the Registrant on October 20, 2021 and incorporated herein by reference)](https://www.sec.gov/Archives/edgar/data/1137789/000119312521302851/d861207dex41.htm)</u> |
| 4.3 | <u>[Specimen Ordinary Share Certificate (Filed as Exhibit 4.2 to the Registrant's Annual Report on Form 10-K for the fiscal year ended July 2, 2020, filed by the Registrant on August 6, 2021 and incorporated herein by reference)](https://www.sec.gov/Archives/edgar/data/1137789/000113778921000049/stx_ex42x20210702.htm)</u> |

---

------

---

| | |
|:---|:---|
| 5.1\* | <u>[Opinion of Arthur Cox, Solicitors as to the legality of the registered shares](s-8xopinionofarthurcox.htm)</u> |
| 23.1\* | <u>[Consent of Arthur Cox, Solicitors (included as part of Exhibit 5.1)](s-8xopinionofarthurcox.htm)</u> |
| 23.2\* | <u>[Consent of Ernst & Young LLP](eys-8consent.htm)</u> |
| 24.1 | <u>[Power of Attorney (included on the signature page of this Registration Statement)](#i6beeb8c00dbf412590bcd41a16097489_1699)</u> |
| 99.1 | <u>[Seagate Technology Holdings plc Amended and Restated Employee Stock Purchase Plan (Filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on October 28, 2025 and incorporated herein by reference)](https://www.sec.gov/Archives/edgar/data/1137789/000113778925000287/ex101-aremployeestockpurch.htm)</u> |
| 99.2 | <u>[Seagate Technology Holdings plc Amended and Restated 2022 Equity Incentive Plan (Filed as Exhibit 10.2 to the Registrant's Current Report on Form 8-K filed on October 28, 2025 and incorporated herein by reference)](https://www.sec.gov/Archives/edgar/data/1137789/000113778925000287/ex102-ar2022equityincent.htm)</u> |
| 107.1\* | <u>[Filing Fee Table](exfilingsfees.htm)</u> |

---

\* Filed herewith.

------

**SIGNATURES**

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Fremont, State of California, on this 30th day of January, 2026.

---

| |
|:---|
| SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY |
| /s/ Dr. William D. Mosley |
| Dr. William D. Mosley, Chief Executive Officer and Director |

---

------

**SIGNATURES AND POWER OF ATTORNEY** 

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints William D. Mosley, Gianluca Romano, and James C. Lee, and each of them, as her/his true and lawful attorneys-in-fact and agents, with power to act with or without the others and with full power of substitution and resubstitution, to sign and execute on behalf of the undersigned any amendment or amendments to the Registration Statement; and each of the undersigned hereby ratifies and confirms all that said attorneys and agents and each of them shall do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Signature** | **Title** | **Date** |
| */s/* Dr. William D. Mosley | Chief Executive Officer and Board Chair (Principal Executive Officer) | January 30, 2026 |
| (Dr. William D. Mosley) | Chief Executive Officer and Board Chair (Principal Executive Officer) | January 30, 2026 |
| */s/* Gianluca Romano | Executive Vice President and Chief Financial Officer (Principal Financial and Accounting Officer) | January 30, 2026 |
| (Gianluca Romano) | Executive Vice President and Chief Financial Officer (Principal Financial and Accounting Officer) | January 30, 2026 |
| */s/* Michael R. Cannon | Director | January 30, 2026 |
| (Michael R. Cannon) | Director | January 30, 2026 |
| */s/* Mark W. Adams | Director | January 30, 2026 |
| (Mark W. Adams) | Director | January 30, 2026 |
| */s/* Shankar Arumugavelu | Director | January 30, 2026 |
| (Shankar Arumugavelu) | Director | January 30, 2026 |
| */s/* Prat S.Bhatt | Director | January 30, 2026 |
| (Prat S. Bhatt) | Director | January 30, 2026 |
| */s/* Yolanda L. Conyers | Director | January 30, 2026 |
| (Yolanda L. Conyers) | Director | January 30, 2026 |
| */s/* Jay L. Geldmacher | Director | January 30, 2026 |
| (Jay L. Geldmacher) | Director | January 30, 2026 |
| */s/* Dylan G. Haggart | Director | January 30, 2026 |
| (Dylan G. Haggart) | Director | January 30, 2026 |
| */s/* Stephanie Tilenius | Director | January 30, 2026 |
| (Stephanie Tilenius) | Director | January 30, 2026 |

---

------

---

| | | |
|:---|:---|:---|
| | | January 30, 2026 |
| */s/* Thomas Szlosek | Director | January 30, 2026 |
| (Thomas Szlosek) | | January 30, 2026 |
| | | January 30, 2026 |
| */s/* Richard L. Clemmer | Director | January 30, 2026 |
| (Richard L. Clemmer) | | January 30, 2026 |

---

------

**SIGNATURE OF AUTHORIZED REPRESENTATIVE IN THE UNITED STATES**

Pursuant to Securities Act of 1933, as amended, the undersigned, the duly authorized representative in the United States of America of Seagate Technology Holdings plc has signed this registration statement thereto in the City of Fremont, State of California, on January 30, 2026.

---

| | |
|:---|:---|
| **Seagate Technology LLC**<br>Authorized U.S. Representative | **Seagate Technology LLC**<br>Authorized U.S. Representative |
| By: | /s/ Dr. William D. Mosley |
|  | Dr. William D. Mosley |
|  | President and Chief Executive Officer |

---

## Ex-Filing

?xml version='1.0' encoding='ASCII'? EX-FILING FEES

---

| |
|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Calculation of Filing Fee Tables**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **S-8**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Seagate Technology Holdings plc**  |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Calculation Rule**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Proposed Maximum Offering Price Per Unit**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Rate**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Registration Fee**  |
| 1 | Equity | Ordinary Shares, par value $0.00001 per share | 457(a) | 10000000 | $339.73 | $3397300000.00 | 0.0001381 | $469167.13 |
| 2 | Equity | Ordinary Shares, par value $0.00001 per share | 457(a) | 4850686 | $339.73 | $1647923554.78 | 0.0001381 | $227578.24 |
| Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: |  | $5045223554.78  |  | $696745.37  |
| Total Fee Offsets:  | Total Fee Offsets:  | Total Fee Offsets:  | Total Fee Offsets:  | Total Fee Offsets:  |  |  |  | $0.00  |
| Net Fee Due:  | Net Fee Due:  | Net Fee Due:  | Net Fee Due:  | Net Fee Due:  |  |  |  | $696745.37  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Offering Note** <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>1</sup> (1) In accordance with Rule 416(a) under the Securities Act of 1933, as amended ("Securities Act"), this registration statement shall be deemed to cover any additional securities that may from time to time be offered or issued under the Seagate Technology Holdings public limited company Amended and Restated Employee Stock Purchase Plan (the "ESPP") and the Seagate Technology Holdings public limited company 2022 Equity Incentive Plan, as amended and restated (the "2022 EIP" and, together with the ESPP, the "Plans") to prevent dilution resulting from stock splits, stock dividends or similar transactions. In addition, pursuant to Rule 416(c) under the Securities Act, this registration statement also covers an indeterminate amount of interests to be offered or sold pursuant to the Plans. (2) Consists of 10,000,000 ordinary shares, par value $0.00001 per share of the Registrant (the "Ordinary Shares"), to be issued under the ESPP. (3) Consists of (i) 3,800,000 Ordinary Shares, to be issued under the 2022 EIP, and (ii) 1,050,686 Ordinary Shares that, in accordance with the 2022 EIP, have become available for issuance under the 2022 EIP to the extent that awards under the 2022 EIP have been terminated, cancelled or expired or any Ordinary Shares subject to such awards were reacquired by the Registrant. (4) Estimated solely for the purpose of calculating the registration fee pursuant to Rules 457(c) and 457(h) of the Securities Act and based upon the average of the high and low prices per share of Ordinary Shares as reported on The NASDAQ Global Select Market on January 23, 2026. (5) The Registrant does not have any fee offsets.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>2</sup> (3) Consists of (i) 3,800,000 Ordinary Shares, to be issued under the 2022 EIP, and (ii) 1,050,686 Ordinary Shares that, in accordance with the 2022 EIP, have become available for issuance under the 2022 EIP to the extent that awards under the 2022 EIP have been terminated, cancelled or expired or any Ordinary Shares subject to such awards were reacquired by the Registrant. (4) Estimated solely for the purpose of calculating the registration fee pursuant to Rules 457(c) and 457(h) of the Securities Act and based upon the average of the high and low prices per share of Ordinary Shares as reported on The NASDAQ Global Select Market on January 23, 2026.

---

| | |
|:---|:---|
| | |
| **Rule 457(p)** | **Rule 457(p)** |
| Fee Offset Claims | N/A |
| Fee Offset Sources | N/A |

---

## Exhibit 5.1

30 January 2026

To: &nbsp;&nbsp;&nbsp;&nbsp;Board of Directors

Seagate Technology Holdings plc

10 Earlsfort Terrace

Dublin, Dublin 2

D02 T380

**Re: &nbsp;&nbsp;&nbsp;&nbsp;Seagate Technology Holdings plc - Form S-8 Registration Statement**

Ladies and Gentlemen,

1.&nbsp;&nbsp;&nbsp;&nbsp;**Basis of Opinion**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.1&nbsp;&nbsp;&nbsp;&nbsp;We are acting as Irish counsel to Seagate Technology Holdings plc, registered number 606203, a public company limited by shares, incorporated under the laws of Ireland, with its registered office at 10 Earlsfort Terrace, Dublin, Dublin 2, D02T380 (the "**Company**"), in connection with the registration statement on Form S-8 to be filed by the Company with the United States Securities and Exchange Commission (the "**SEC**") on or around the date hereof (the "**Registration Statement**") under the Securities Act of 1933, as amended (the "**Securities Act**"), with respect to (a) an additional 10,000,000 ordinary shares with a nominal value US$0.00001 per share of the Company (the "**Ordinary Shares**") to be issued under the Seagate Technology Holdings public limited company Amended and Restated Employee Stock Purchase Plan (the "**ESPP**"); (b) an additional 3,800,000 Ordinary Shares to be issued under the Seagate Technology Holdings public limited company 2022 Equity Incentive Plan, as amended and restated (the "**2022 EIP**" and, together with the ESPP, the "**Plans**"); and (c) 1,050,686 Ordinary Shares that, in accordance with the 2022 EIP, have become available for issuance under the 2022 EIP to the extent that awards under the 2022 EIP have been terminated, cancelled or expired or any Ordinary Shares subject to such awards were reacquired by the Company (together, the "**Shares**").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.2&nbsp;&nbsp;&nbsp;&nbsp;This Opinion is confined to and given in all respects on the basis of the laws of Ireland (meaning Ireland exclusive of Northern Ireland) in force as at the date hereof as currently applied by the courts of Ireland. We have made no investigation of and we express no opinion as to the laws of any other jurisdiction or the effect thereof. In particular, we express no opinion on the laws of the European Union as they affect any jurisdiction other than Ireland. We have assumed without investigation that insofar as the laws of any jurisdiction other than Ireland are relevant, such laws do not prohibit and are not inconsistent with any of the obligations or rights expressed in the plan documents in respect of the Plans (as set out in the Schedule, the "**Plan Documents**") or the transactions contemplated thereby.

------

<br> <br> <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.3&nbsp;&nbsp;&nbsp;&nbsp;This Opinion is also strictly confined to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;the matters expressly stated herein at paragraph 2 below and is not to be read as extending by implication or otherwise to any other matter;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;the Plan Documents (as set out in the Schedule); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;the Searches (as defined at 1.7 below),

and is subject to the assumptions and qualifications set out below.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.4&nbsp;&nbsp;&nbsp;&nbsp;We express no opinion, and make no representation or warranty, as to any matter of fact or in respect of any documents which may exist in relation to the Plans other than the Plan Documents.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.5&nbsp;&nbsp;&nbsp;&nbsp;In giving this Opinion, we have relied upon the Corporate Certificate (as defined in the Schedule to this Opinion) and the Searches and we give this Opinion expressly on the terms that no further investigation or diligence in respect of any matter referred to in the Corporate Certificate or the Searches is required of us.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.6&nbsp;&nbsp;&nbsp;&nbsp;For the purpose of giving this Opinion, we have examined and relied on copies sent to us by email in pdf or other electronic format of the Plan Documents.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.7&nbsp;&nbsp;&nbsp;&nbsp;For the purpose of giving this Opinion, we have caused to be made legal searches against the Company on 30 January 2026 (together the "**Searches**"):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;on the file of the Company maintained by the Registrar of Companies in the Irish Companies Registration Office for mortgages, debentures or similar charges or notices thereof and for the appointment of any examiner, receiver or liquidator;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;in the Judgments Office of the High Court for unsatisfied judgments, orders, decrees and the like for the five years immediately preceding the date of the search; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;in the Central Office of the High Court for any proceedings and petitions filed in respect of the Company in the last two years.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.8&nbsp;&nbsp;&nbsp;&nbsp;This Opinion is governed by and is to be construed in accordance with the laws of Ireland as interpreted by the courts of Ireland at the date hereof. This Opinion speaks only as of its date. We assume no obligation to update this Opinion at any time in the future or to advise you of any change in law or change in interpretation of law which may occur after the date of this Opinion.

2.&nbsp;&nbsp;&nbsp;&nbsp;**Opinion**

Subject to the assumptions and qualifications set out in this Opinion and to any matters not disclosed to us, we are of the opinion that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.1&nbsp;&nbsp;&nbsp;&nbsp;the Company is a public company limited by shares, is duly incorporated and validly existing under the laws of Ireland and has the requisite corporate authority to allot and issue the Shares; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.2&nbsp;&nbsp;&nbsp;&nbsp;when the Shares are allotted and issued (and, if required, paid for in cash) pursuant to and in accordance with the terms and conditions referred to or summarised in the

------

<br> <br> <br>

applicable resolutions and the Plans, the Shares will be validly issued, fully paid up and non-assessable (which term means when used herein that no further sums are required to be paid by the holders thereof in connection with the allotment and issue of such Shares).

3.&nbsp;&nbsp;&nbsp;&nbsp;**Assumptions**

For the purpose of giving this Opinion, we assume the following without any responsibility on our part if any assumption proves to have been untrue as we have not verified independently any assumption:

*The Registration Statement and the Plans*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1&nbsp;&nbsp;&nbsp;&nbsp;when filed with the SEC, the Registration Statement will not differ in any material respect from the latest draft that we have examined;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.2&nbsp;&nbsp;&nbsp;&nbsp;that Shares issued pursuant to any awards under the Plans will be paid up in consideration of the receipt by the Company prior to, or simultaneously with, the issue of such Shares of cash at least equal to the nominal value of such Shares and any premium required to be paid up on the Shares pursuant to their terms of allotment and issue and that where Shares are allotted and issued under the Plans without the requirement for the payment of cash consideration by or on behalf of the relevant beneficiary, then such shares shall either be fully paid up by the Company or one of its subsidiaries within the time permitted by Section 1027(1) of the Companies Act 2014 (as amended) (the "**Companies Act**") (and, in the case of the Company or a subsidiary incorporated in Ireland, in a manner permitted by Sections 82(6) and 1043(1) of the Companies Act or allotted and issued for consideration as set out in Section 1028(2) of the Companies Act);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.3&nbsp;&nbsp;&nbsp;&nbsp;that the filing of the Registration Statement with the SEC has been authorised by all necessary actions under all applicable laws (other than Irish law), including applicable U.S. federal and state securities law;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.4&nbsp;&nbsp;&nbsp;&nbsp;the Shares will be allotted and issued in the manner stated in the Plans;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.5&nbsp;&nbsp;&nbsp;&nbsp;that the exercise of any options and rights granted under the Plans and the allotment and issue of the Shares upon exercise of such options and rights (and the allotment and issue of the Shares in connection with any other awards granted under the Plans) will be conducted in accordance with the terms and the procedures described in the Plans and the applicable award agreement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.6&nbsp;&nbsp;&nbsp;&nbsp;that the Company will comply with the reservation of Shares set forth in the Plans and adopted by the Board;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.7&nbsp;&nbsp;&nbsp;&nbsp;that at the time of the allotment and issuance of the Shares, such allotment and issuance shall not be in contravention or breach of any agreement, undertaking, arrangement, deed or covenant affecting the Company or to which the Company is a party or otherwise bound or subject;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.8&nbsp;&nbsp;&nbsp;&nbsp;that the Company has sufficient authorised but unissued share capital to allot and issue the required number of Shares to be delivered to the recipients of any awards granted under the Plans;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.9&nbsp;&nbsp;&nbsp;&nbsp;that, at the time of the allotment and issuance of the Shares, the directors of the Company have sufficient authority pursuant to Section 1021 of the Companies Act to

------

<br> <br> <br>

allot and issue the Shares and, to the extent applicable, have been authorised to issue such Shares without the application of the statutory pre-emption rights pursuant to Section 1023 of the Companies Act in respect of any allotment and issuance of the Shares

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.10&nbsp;&nbsp;&nbsp;&nbsp;that the Company will continue to renew its authority to allot and issue the Shares pursuant to Sections 1021 and 1023 of the Companies Act and that, where such authority has not been renewed, the Company will not allot or issue the Shares after such authority has expired;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.11&nbsp;&nbsp;&nbsp;&nbsp;that from the date of the board resolutions set out in the Schedule, no other corporate or other action has been taken by the Company to amend, alter or repeal those resolutions;

*Authenticity and bona fides*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.12&nbsp;&nbsp;&nbsp;&nbsp;the completeness and authenticity of all documents submitted to us as originals or copies of originals and (in the case of copies) conformity to the originals of copy documents and the genuineness of all signatories (including electronic signatures), stamps and seals thereon;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.13&nbsp;&nbsp;&nbsp;&nbsp;where incomplete Plan Documents have been submitted to us or signature pages only have been supplied to us for the purposes of issuing this Opinion, that the originals of such Plan Documents correspond in all respects with the last draft of the complete Plan Documents submitted to us;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.14&nbsp;&nbsp;&nbsp;&nbsp;that the Plan Documents will be executed in a form and content having no material difference to the drafts provided to us, will be delivered by the parties thereto, and that the terms thereof will be observed and performed by the parties thereto;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.15&nbsp;&nbsp;&nbsp;&nbsp;that the copies produced to us of minutes of meetings and/or of resolutions correctly record the proceedings at such meetings and/or the subject matter which they purport to record and that any meetings referred to in such copies were duly convened, duly quorate and held, that those present at any such meetings were entitled to attend and vote at the meeting and acted bona fide throughout and that no further resolutions have been passed or other action taken which would or might alter the effectiveness thereof and that such resolutions have not been amended or rescinded and are in full force and effect;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.16&nbsp;&nbsp;&nbsp;&nbsp;that the Constitution of the Company effective as of 18 May 2021 is the current Constitution of the Company, is up to date and has not been amended or superseded and that there are no other terms governing the Shares other than the those set out in the Constitution of the Company;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.17&nbsp;&nbsp;&nbsp;&nbsp;that there is, at the relevant time of the allotment and issue of the Shares, no matter affecting the authority of the directors of the Company to allot and issue the Shares, not disclosed by the Constitution or the resolutions produced to us, which would have any adverse implications in relation to the opinions expressed in this Opinion;

*Accuracy of Searches and Warranties*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.18&nbsp;&nbsp;&nbsp;&nbsp;the accuracy and completeness of the information disclosed in the Searches is accurate as of the date of this Opinion and that such information has not since the time of such search or enquiry been altered. It should be noted that:

------

<br> <br> <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;the matters disclosed in the Searches may not present a complete summary of the actual position on the matters we have caused searches to be conducted for;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;the position reflected by the Searches may not be fully up-to-date; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;searches at the Companies Registration Office, Dublin, do not necessarily reveal whether or not a prior charge has been created or a resolution has been passed or a petition presented or any other action taken for the winding-up of or the appointment of a receiver or an examiner to the Company or its assets;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.19&nbsp;&nbsp;&nbsp;&nbsp;that there has been no alterations in the status or condition of the Company as disclosed by the Searches;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.20&nbsp;&nbsp;&nbsp;&nbsp;the truth, completeness and accuracy of all representations and statements as to factual matters contained in the Plan Documents;

*Solvency and Insolvency* 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.21&nbsp;&nbsp;&nbsp;&nbsp;That:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;the Company is at the date of this Opinion able to pay its debts within the meaning of Sections 509(3) and 570 of the Companies Act or any analogous provisions under any applicable laws; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;the Company will not as a consequence of doing any act or thing which the Plan Documents contemplate, permit or require any relevant party to do, be unable to pay its debts within the meaning of such Sections or any analogous provisions under any applicable laws.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.22&nbsp;&nbsp;&nbsp;&nbsp;That:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;no liquidator, receiver or examiner or other similar or analogous officer has been appointed in relation to the Company or any of its assets or undertakings; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;no petition for the making of a winding-up order or the appointment of an examiner or any similar officer or any similar or analogous procedure in any jurisdiction has been presented in relation to the Company.

*Commercial Benefit*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.23&nbsp;&nbsp;&nbsp;&nbsp;that the Plan Documents have been entered into for bona fide commercial purposes, on arm's length terms and for the benefit of each party thereto and are in those parties' respective commercial interests and for their respective corporate benefit.

4.&nbsp;&nbsp;&nbsp;&nbsp;**Disclosure**

This Opinion is addressed to you in connection with the Registration Statement being filed with the SEC. We hereby consent to the inclusion of this Opinion as an exhibit to the Registration Statement to be filed with the SEC. In giving this consent, we do not thereby admit that we are in a category of persons whose consent is required under Section 7 of the Securities Act.

------

<br> <br> <br>

Yours faithfully,

<u>/s/ Arthur Cox LLP</u> 

**ARTHUR COX LLP**

------

<br> <br> <br>

**SCHEDULE**

**The Plan Documents**

1.&nbsp;&nbsp;&nbsp;&nbsp;A copy of the form of the Registration Statement to be filed by the Company with the SEC on or about the date of this Opinion;

2.&nbsp;&nbsp;&nbsp;&nbsp;Copies of the Plans;

3.&nbsp;&nbsp;&nbsp;&nbsp;A copy of the form of the Option Agreement, Other Share-Based Award Agreement, Performance Share Bonus Agreement, Performance Share Unit Agreement, Phantom Share Unit Agreement, Restricted Share Bonus Agreement, Restricted Share Unit Agreement and Share Appreciation Right Agreement in respect of grants made under the 2022 EIP;

4.&nbsp;&nbsp;&nbsp;&nbsp;A copy extract of the resolutions of the board of directors of the Company dated 26 July 2025 at which it approved, amongst other things: (i) the amendment and restatement of the ESPP and issuance of Shares thereunder (ii) the amendment and restatement of the 2022 EIP and issuance of Shares thereunder; (iii) the approval of the filing of the Registration Statement with the SEC; and, (iv) the registration of the Shares;

5.&nbsp;&nbsp;&nbsp;&nbsp;A copy extract of the resolutions of the shareholders of the Company proposed for approval at the annual general meeting of the shareholders of the Company convened and held on 25 October 2025 at which a quorum was present (the "**2025 AGM**") approving the amended and restated Plans and the authority for the board of directors of the Company to allot and issue shares and to opt out of statutory pre-emption rights;

6.&nbsp;&nbsp;&nbsp;&nbsp;A corporate certificate of the Secretary of the Company dated 30 January 2026 (the "**Corporate Certificate**") certifying, among other things, the voting results regarding approval of the amended and restated Plans and the authority for the board of directors of the Company to allot and issue shares and to opt out of statutory pre-emption rights by the shareholders of the Company at the 2025 AGM, for reliance of the information and documents provided in connection to this opinion;

7.&nbsp;&nbsp;&nbsp;&nbsp;A copy of the Constitution of the Company in the form adopted by resolution of the shareholders of the Company on 14 May 2021 and effective on 18 May 2021 (the "**Constitution**");

8.&nbsp;&nbsp;&nbsp;&nbsp;A copy of the Certificate of Incorporation of the Company dated 16 June 2017;

9.&nbsp;&nbsp;&nbsp;&nbsp;A copy of the Certificate of Incorporation of Change of Name of the Company dated 10 February 2021;

10.&nbsp;&nbsp;&nbsp;&nbsp;A copy of the Certificate of Incorporation on re-registration as a public limited company dated 16 February 2021; and

11.&nbsp;&nbsp;&nbsp;&nbsp;Letter of Status from the Irish Companies Registration Office dated 30 January 2026.

## Exhibit 23.1

**EXHIBIT 23.2**

**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Consent of Independent Registered Public Accounting Firm**

We consent to the incorporation by reference in the Registration Statement pertaining to the Seagate Technology Holdings public limited company Amended and Restated Employee Stock Purchase Plan and the Seagate Technology Holdings public limited company Amended and Restated 2022 Equity Incentive Plan of our reports dated August 1, 2025, with respect to the consolidated financial statements of Seagate Technology Holding plc and the effectiveness of internal control over financial reporting of Seagate Technology Holding plc included in its Annual Report (Form 10-K) for the year ended June 27, 2025, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

San Jose, California

January 30, 2026