# EDGAR Filing Document

**Accession Number:** 0001489393
**File Stem:** 0001104659-25-111282
**Filing Date:** 2025-11
**Character Count:** 291974
**Document Hash:** 35ccc74c6cbe3d428e4fdbd19fe5c98e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-111282.hdr.sgml**: 20251113

**ACCESSION NUMBER**: 0001104659-25-111282

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 21

**CONFORMED PERIOD OF REPORT**: 20251110

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251113

**DATE AS OF CHANGE**: 20251113

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LyondellBasell Industries N.V.
- **CENTRAL INDEX KEY:** 0001489393
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL ORGANIC CHEMICALS [2860]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 980646235
- **STATE OF INCORPORATION:** P7
- **FISCAL YEAR END:** 1231
- **LEGAL ENTITY IDENTIFIER:** BN6WCCZ8OVP3ITUUVN49

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34726
- **FILM NUMBER:** 251478455

**BUSINESS ADDRESS:**
- **STREET 1:** 2800 POST OAK BLVD
- **STREET 2:** SUITE 5100
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77056
- **BUSINESS PHONE:** 713-309-7200

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 4TH FLOOR
- **STREET 2:** ONE VINE STREET
- **CITY:** LONDON
- **PROVINCE COUNTRY:** X0
- **ZIP:** W1J 0AH

?xml version='1.0' encoding='ASCII'?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported):** November 10, 2025

**LYONDELLBASELL INDUSTRIES N.V.**

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

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;The Netherlands | &nbsp;&nbsp;001-34726 | &nbsp;&nbsp;98-0646235 |
| &nbsp;&nbsp; **(State or other jurisdiction of<br> incorporation)**  | &nbsp;&nbsp; **(Commission File Number)**  | &nbsp;&nbsp; **(IRS Employer Identification No.)**  |

---

---

| | | |
|:---|:---|:---|
| 2800 Post Oak Blvd<br> Suite 5100<br> Houston, Texas<br> USA 77056  | 4<sup>th</sup> Floor, One Vine Street<br> London<br> W1J0AH<br> The United Kingdom  | Delftseplein 27E<br> 3013 AA Rotterdam<br> The Netherlands  |
|  | **(Addresses of principal executive offices)(Zip code)** |  |

---

---

| | | |
|:---|:---|:---|
| (713) 309-7200 | +44 (0)207 220 2600 | +31 (0)10 275 5500 |
| **(Registrant's telephone numbers, including area codes)** | **(Registrant's telephone numbers, including area codes)** | **(Registrant's telephone numbers, including area codes)** |

---

**(Former name or former address, if changed since last report)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

◻ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

◻ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

◻ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

◻ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| Title of each class | Trading symbol(s) | Name of each exchange on which registered |
| Ordinary Shares, € 0.04 par value | LYB | New York Stock Exchange |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;¨

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 13(a) of the Exchange Act. ¨

---

| | |
|:---|:---|
| **Item 1.01.** | **Entry into a Material Definitive Agreement.** |

---

On November 13, 2025, LyondellBasell Industries N.V. (the "Company") and its wholly owned subsidiary, LYB International Finance III, LLC (the "Issuer"), completed the underwritten public offering and sale by the Issuer of $500 million aggregate principal amount of 5.125% Guaranteed Notes due 2031 (the "2031 Notes") and $1 billion aggregate principal amount of 5.875% Guaranteed Notes due 2036 (the "2036 Notes" and, together with the 2031 Notes, the "Notes"). The Notes are fully and unconditionally guaranteed by the Company.

The offering of the Notes was registered under the Securities Act of 1933, as amended (the "Securities Act"), pursuant to the Company's Registration Statement on Form S-3ASR (Registration No. 333-283755), and was made pursuant to the prospectus dated December 12, 2024 (the "Base Prospectus"), as supplemented by the prospectus supplement dated November 10, 2025 relating to the Notes and filed with the Securities and Exchange Commission pursuant to Rule 424(b) of the Securities Act (together with the Base Prospectus, the "Prospectus"). The Notes were issued under a base indenture, dated as of October 10, 2019, among the Company, the Issuer and Wells Fargo Bank, National Association, as trustee (the "Base Indenture"), as supplemented by a supplemental indenture dated May 17, 2023, among the Company, the Issuer, Computershare Trust Company, N.A., as base trustee (as successor to Wells Fargo Bank, National Association), and The Bank of New York Mellon Trust Company, N.A., as trustee (the "Supplemental Indenture," and the Base Indenture as so supplemented, the "Indenture"). The terms of the Notes and the guarantees by the Company are set forth in an officer's certificate of the Issuer dated November 13, 2025 delivered pursuant to the Indenture (the "Officer's Certificate").

The descriptions of the Notes, the Indenture, and the Officer's Certificate are included in the Prospectus and are incorporated herein by reference. The foregoing description of the Indenture is qualified in its entirety by reference to the full text of the Base Indenture, the Supplemental Indenture and the Officer's Certificate (including the forms of the Notes), copies of which are filed as Exhibits 4.1, 4.2 and 4.3, respectively, to this Form 8-K and are incorporated herein by reference.

---

| | |
|:---|:---|
| **Item 2.03.** | **Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement.** |

---

The information set forth under "Item 1.01. Entry into a Material Definitive Agreement" is incorporated herein by reference.

---

| | |
|:---|:---|
| **Item 8.01.** | **Other Events.** |

---

On November 10, 2025, the Company and the Issuer entered into an Underwriting Agreement (the "Underwriting Agreement") with Citigroup Global Markets Inc., Deutsche Bank Securities Inc. and J.P. Morgan Securities LLC, as representatives of the several underwriters named therein, relating to the underwritten public offering and sale by the Issuer of the Notes.

The description above is a summary and is qualified in its entirety by reference to the Underwriting Agreement, a copy of which is filed as Exhibit 1.1 to this Form 8-K and is incorporated herein by reference.

---

| | |
|:---|:---|
| **Item 9.01.** | **Financial Statements and Exhibits.** |

---

**(d) Exhibits**

---

| | |
|:---|:---|
| **Exhibit<br> Number** | **Description** |
| **[1.1\*](tm2530154d4_ex1-1.htm)** | [Underwriting Agreement dated November 10, 2025 among LyondellBasell Industries N.V., LYB International Finance III, LLC, and Citigroup Global Markets Inc., Deutsche Bank Securities Inc. and J.P. Morgan Securities LLC, as representatives of the several underwriters named therein.](tm2530154d4_ex1-1.htm) |
| **[4.1](https://www.sec.gov/Archives/edgar/data/1489393/000148939319000058/exhibit41bringdown.htm)** | [Indenture, among LYB International Finance III, LLC, as Issuer, LyondellBasell Industries N.V., as Guarantor, and Wells Fargo Bank, National Association, as Trustee, dated as of October 10, 2019 (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed with the SEC on October 10, 2019).](https://www.sec.gov/Archives/edgar/data/1489393/000148939319000058/exhibit41bringdown.htm) |
| **[4.2](https://www.sec.gov/Archives/edgar/data/1489393/000110465923061636/tm2310507d2_ex4-44.htm)** | [Supplemental Indenture, among LYB International Finance III, LLC, as Issuer, LyondellBasell Industries N.V., as Guarantor, Computershare Trust Company, N.A., as Base Trustee (as successor to Wells Fargo Bank, National Association) and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of May 17, 2023 (incorporated by reference to Exhibit 4.44 to Post-Effective Amendment No. 1 to the Registration Statement on Form S-3 (File No. 333-261639) filed with the SEC on May 17, 2023).](https://www.sec.gov/Archives/edgar/data/1489393/000110465923061636/tm2310507d2_ex4-44.htm) |
| **[4.3\*](tm2530154d4_ex4-3.htm)** | [Officer's Certificate of LYB International Finance III, LLC relating to the 5.125% Guaranteed Notes due 2031 and 5.875% Guaranteed Notes due 2036, dated as of November 13, 2025.](tm2530154d4_ex4-3.htm) |
| **[4.4\*](tm2530154d4_ex4-3.htm)** | [Form of LYB International Finance III, LLC's 5.125% Guaranteed Notes due 2031 (included in Exhibit 4.3).](tm2530154d4_ex4-3.htm) |
| **[4.5\*](tm2530154d4_ex4-3.htm)** | [Form of LYB International Finance III, LLC's 5.875% Guaranteed Notes due 2036 (included in Exhibit 4.3).](tm2530154d4_ex4-3.htm) |
| **[5.1\*](tm2530154d4_ex5-1.htm)** | [Legal opinion of Gibson, Dunn & Crutcher LLP.](tm2530154d4_ex5-1.htm) |
| **[5.2\*](tm2530154d4_ex5-2.htm)** | [Legal opinion of De Brauw Blackstone Westbroek N.V.](tm2530154d4_ex5-2.htm) |
| **[8.1\*](tm2530154d4_ex8-1.htm)** | [Legal opinion of De Brauw Blackstone Westbroek N.V.](tm2530154d4_ex8-1.htm) |
| **[23.1\*](tm2530154d4_ex5-1.htm)** | [Consent of Gibson, Dunn & Crutcher LLP (included in Exhibit 5.1).](tm2530154d4_ex5-1.htm) |
| **23.2\*** | Consent of De Brauw Blackstone Westbroek N.V. (included in [Exhibits 5.2](tm2530154d4_ex5-2.htm) and [8.1](tm2530154d4_ex8-1.htm)). |
| **104\*** | The cover page from this Current Report on Form 8-K, formatted in Inline XBRL. |

---

**\*Filed herewith**

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | LYONDELLBASELL INDUSTRIES N.V. | LYONDELLBASELL INDUSTRIES N.V. |
| Date: November 13, 2025 | By: | /s/ Brendan J. Dalton |
|  | Name: | Brendan J. Dalton |
|  | Title: | Vice President and Treasurer |

---

## Exhibit 1.1

**Exhibit 1.1**

***Execution Version***

**LYB International Finance III, LLC**

**$500,000,000 5.125% Guaranteed Notes due 2031**

**$1,000,000,000 5.875% Guaranteed Notes due 2036**

**Fully and Unconditionally Guaranteed by LyondellBasell Industries N.V.**

**<u>UNDERWRITING AGREEMENT</u>**

November 10, 2025

Citigroup Global Markets Inc.

388 Greenwich Street

New York, New York 10013

Deutsche Bank Securities Inc.

1 Columbus Circle

New York, New York 10019

J.P. Morgan Securities LLC

270 Park Avenue

New York, New York 10017

As Representatives of the several Underwriters listed in <u>Schedule A</u>

Ladies and Gentlemen:

1. *Introductory*. LYB International Finance III, LLC,
a Delaware limited liability company (the "**Issuer**") and wholly owned indirect subsidiary of LyondellBasell Industries
N.V., a public company with limited liability (*naamloze vennootschap*) in the country of The Netherlands (the "**Company** "),
proposes to issue and sell to the several underwriters named in <u>Schedule A</u> hereto (the "**Underwriters** "), acting
severally and not jointly, the respective amounts set forth in such Schedule A of $500,000,000 aggregate principal amount of the Issuer's
5.125% Guaranteed Notes due 2031 (the "**2031 Notes**") and $1,000,000,000 aggregate principal amount of the Issuer's
5.875% Guaranteed Notes due 2036 (the "**2036 Notes**" and, together with the 2031 Notes, the "**Notes** "),
to be fully and unconditionally guaranteed on a senior unsecured basis by the Company (the "**Guarantees**" and, together
with the Notes, the "**Securities** "). Citigroup Global Markets Inc., Deutsche Bank Securities Inc. and J.P. Morgan Securities
LLC have agreed to act as the representatives of the several Underwriters (the "**Representatives**") in connection with
the offering and sale of the Securities. The Securities will be issued pursuant to the base indenture dated as of October 10, 2019,
as supplemented through the Closing Date (as defined below) (the "**Base Indenture**," and as supplemented by (i) the
supplemental indenture dated May 17, 2023, among the Issuer, the Company, Computershare Trust Company, N.A., as base trustee (as
successor to Wells Fargo Bank, National Association) and The Bank of New York Mellon Trust Company, N.A., as trustee (the "**Trustee** ")
(the "**Supplemental Indenture**") and (ii) the Officer's Certificate (the "**Officer's Certificate** ")
to be dated as of the Closing Date (as defined below) establishing the terms of the Securities, the "**Indenture** ").
The Notes will be issued only in book-entry form in the name of Cede & Co., as nominee of The Depository Trust Company (the
 "**DTC** ").

This agreement (the "**Agreement**"), the Indenture and the Notes are hereinafter referred to as the "**Transaction Documents**."

2. *Representations and Warranties of the Issuer and the Company*.
The Issuer and the Company, jointly and severally, represent and warrant to, and agree with, the several Underwriters that:

(a) *Filing and Effectiveness of Registration Statement; Certain Defined Terms*. The Company and the Issuer have filed with the Commission a registration statement on Form S-3 (No. 333-283755),
including a related prospectus or prospectuses, covering the registration of the Securities under the Act, which has become effective.
 "**Registration Statement**" at any particular time means such registration statement in the form then filed with the
Commission, including any amendment thereto, any document incorporated by reference therein and all 430B Information and all 430C Information
with respect to such registration statement, that in any case has not been superseded or modified. "**Registration Statement** "
without reference to a time means the Registration Statement as of the Effective Time. For purposes of this definition, 430B Information
shall be considered to be included in the Registration Statement as of the time specified in Rule 430B.

For purposes of this Agreement:

"**430B Information**" means information included in a prospectus then deemed to be a part of the Registration Statement pursuant to Rule 430B(e) or retroactively deemed to be a part of the Registration Statement pursuant to Rule 430B(f).

"**430C Information**" means information included in a prospectus then deemed to be a part of the Registration Statement pursuant to Rule 430C.

"**Act**" means the Securities Act of 1933, as amended.

"**Applicable Time**" means 4:15 P.M. (New York time) on the date of this Agreement.

"**Closing Date**" has the meaning defined in Section ‎3 hereof.

"**Commission**" means the U.S. Securities and Exchange Commission.

"**Effective Time**" of the Registration Statement relating to the Securities means the time of the first contract of sale for the Securities.

"**Exchange Act**" means the Securities Exchange Act of 1934, as amended.

"**Final Prospectus**" means the Statutory Prospectus that discloses the offering price, other 430B Information and other final terms of the Securities and otherwise satisfies Section 10(a) of the Act.

"**General Use Issuer Free Writing Prospectus**" means any Issuer Free Writing Prospectus that is intended for general distribution to prospective investors, as evidenced by its being so specified in Schedule B to this Agreement.

"**Issuer Free Writing Prospectus**" means any "issuer free writing prospectus," as defined in Rule 433 under the Act, relating to the Securities in the form filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Company's records pursuant to Rule 433(g) under the Act.

"**Limited Use Issuer Free Writing Prospectus**" means any Issuer Free Writing Prospectus that is not a General Use Issuer Free Writing Prospectus.

"**Rules and Regulations**" means the rules and regulations of the Commission.

"**Securities Laws**" means, collectively, the Sarbanes-Oxley Act of 2002 ("**Sarbanes-Oxley**"), the Act, the Exchange Act, the Rules and Regulations, the auditing principles, rules, standards and practices applicable to auditors of "issuers" (as defined in Sarbanes-Oxley) promulgated or approved by the Public Company Accounting Oversight Board and, as applicable, the rules of the New York Stock Exchange and the NASDAQ Stock Market.

"**Statutory Prospectus**" with reference to any particular time means the prospectus relating to the Securities that is included in the Registration Statement immediately prior to that time, including all 430B Information and all 430C Information with respect to the Registration Statement. For purposes of the foregoing definition, 430B Information shall be considered to be included in the Statutory Prospectus only as of the actual time that the form of prospectus (including a prospectus supplement) is filed with the Commission pursuant to Rule 424(b) and not retroactively.

Unless otherwise specified, a reference to a "rule" is to the indicated rule under the Act.

(b) *Compliance with Securities Act Requirements*. (i) (A) At
the Effective Time relating to the Securities and (B) on the Closing Date, the Registration Statement conformed and will conform
in all material respects to the requirements of the Act and the Rules and Regulations and did not and will not include an untrue
statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein
not misleading and (ii) (A) on its date, (B) at the time of filing the Final Prospectus pursuant to Rule 424(b) and
(C) on the Closing Date, the Final Prospectus will conform in all material respects to the requirements of the Act and the Rules and
Regulations, and will not include an untrue statement of a material fact or omit to state a material fact necessary in order to make
the statements therein, in the light of the circumstances under which they were made, not misleading. The preceding sentence does not
apply to statements in or omissions from any such document in reliance upon and in conformity with written information furnished to the
Company or the Issuer by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that
the only such information is that described as such in Section **‎** 9(a) hereof.

(c) *Automatic Shelf Registration Statement*. (i) *Well-Known Seasoned Issuer Status*. (A) At the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of
the Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of
the Exchange Act or form of prospectus) and (B) at the time the Company, the Issuer or any person acting on the Company's
or the Issuer's behalf (within the meaning, for this clause only, of Rule 163(c)) made any offer relating to the Securities
in reliance on the exemption of Rule 163, each of the Company and the Issuer was a "well known seasoned issuer" as defined
in Rule 405, including not having been an "ineligible issuer" as defined in Rule 405.

(ii) *Effectiveness of Automatic Shelf Registration Statement*.
The Registration Statement is an "automatic shelf registration statement," as defined in Rule 405, that initially became
effective within three years of the date of this Agreement.

(iii) *Eligibility to Use Automatic Shelf Registration Form*. Neither
the Company nor the Issuer has received from the Commission any notice pursuant to Rule 401(g)(2) objecting to the use of the
automatic shelf registration statement form. If at any time when Securities remain unsold by the Underwriters, the Company or the Issuer
receives from the Commission a notice pursuant to Rule 401(g)(2) or otherwise ceases to be eligible to use the automatic shelf
registration statement form, the Company and the Issuer will (i) promptly notify the Representatives, (ii) promptly file a
new registration statement or post-effective amendment on the proper form relating to the Securities, in a form reasonably satisfactory
to the Representatives, (iii) use their best efforts to cause such registration statement or post-effective amendment to be declared
effective as soon as practicable, and (iv) promptly notify the Representatives of such effectiveness. The Company and the Issuer
will take all other action necessary or appropriate to permit the public offer and sale of the Securities to continue as contemplated
in the registration statement that was the subject of the Rule 401(g)(2) notice or for which the Company or the Issuer has
otherwise become ineligible. References herein to the Registration Statement shall include such new registration statement or post-effective
amendment, as the case may be.

(iv) *Filing Fees*. The Company and the Issuer have paid or shall
pay the required Commission filing fees relating to the Securities within the time required by Rule 456(b)(1) without regard
to the proviso therein and otherwise in accordance with Rules 456(b), 457(n) and 457(r).

(d) *Ineligible Issuer Status*. (i) At the earliest time
after the filing of the Registration Statement that the Company, the Issuer or another offering participant made a bona fide offer (within
the meaning of Rule 164(h)(2)) of the Securities, neither the Company nor the Issuer was and (ii) at the date of this Agreement,
neither the Company nor the Issuer is an "ineligible issuer," as defined in Rule 405.

(e) *General Disclosure Package*. As of the Applicable Time,
neither (i) the General Use Issuer Free Writing Prospectus(es) issued at or prior to the Applicable Time and the preliminary prospectus
supplement, dated November 10, 2025, including the base prospectus, dated December 12, 2024 (which is the most recent Statutory
Prospectus distributed to investors generally), including any documents incorporated by reference therein, and the pricing term sheet
(the "**Pricing Term Sheet** "), in the form attached hereto as <u>Exhibit A</u>, and any other information stated
in <u>Schedule B</u> to this Agreement to be included in the General Disclosure Package, all considered together (collectively, the "**General Disclosure Package** "), nor (ii) any individual Limited Use Issuer Free Writing Prospectus, when considered together with
the General Disclosure Package, included an untrue statement of a material fact or omitted to state a material fact necessary in order
to make the statements therein, in the light of the circumstances under which they were made, not misleading. The preceding sentence
does not apply to statements in or omissions from any such document in reliance upon and in conformity with written information furnished
to the Company or the Issuer by any Underwriter through the Representatives specifically for use therein, it being understood and agreed
that the only such information furnished by any Underwriter consists of the information described as such in Section **‎** 9(a) hereof.
Except as disclosed in the General Disclosure Package, on the date of this Agreement, the Company's Annual Report on Form 10-K
most recently filed with the Commission and all subsequent reports filed with the Commission pursuant to Section 13(a) or 15(d) of
the Exchange Act, including the documents incorporated by reference in the General Disclosure Package and the Final Prospectus, when
they were filed with the Commission, do not include an untrue statement of a material fact or omit to state a material fact necessary
to make the statements therein, in the light of the circumstances under which they were made, not misleading. Such documents, when they
were filed with the Commission, conformed in all material respects to the requirements of the Exchange Act and the applicable Rules and
Regulations.

(f) *Issuer Free Writing Prospectuses*. Each Issuer Free Writing
Prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Securities or
until any earlier date that the Company or the Issuer notified or notifies the Representatives as described in the next sentence, did
not, does not and will not include any information that conflicted, conflicts or will conflict with the information then contained in
the Registration Statement. If at any time following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event
or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information then contained
in the Registration Statement or as a result of which such Issuer Free Writing Prospectus, if republished immediately following such
event or development, would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary
in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, (i) the Company
and the Issuer have promptly notified or will promptly notify the Representatives and (ii) the Company and the Issuer have promptly
amended or will promptly amend or supplement such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement
or omission. The foregoing two sentences do not apply to statements in or omissions from any Issuer Free Writing Prospectus in reliance
upon and in conformity with written information furnished to the Company or the Issuer by any Underwriter through the Representatives
specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter consists of
the information described as such in Section **‎** 9(a) hereof. Each Issuer Free Writing Prospectus, when it was filed
with the Commission, conformed in all material respects to the requirements of the Exchange Act and the applicable Rules and Regulations.

(g) *The Underwriting Agreement*. This Agreement has been duly
authorized, executed and delivered by each of the Company and the Issuer.

(h) *Authorization of the Notes*. The Notes have been duly authorized
and, on the Closing Date, will have been validly executed and delivered by the Issuer. When the Notes have been issued, executed and
authenticated in accordance with the provisions of the Indenture and delivered to and paid for by the Underwriters in accordance with
the terms of this Agreement, the Notes will be entitled to the benefits of the Indenture and will be valid and binding obligations of
the Issuer, enforceable against the Issuer in accordance with their terms except as the enforceability thereof may be limited by bankruptcy,
insolvency or similar laws affecting creditors' rights generally and rights of acceleration and the availability of equitable remedies
may be limited by equitable principles of general applicability (which principles may include implied duties of good faith and fair dealing).

(i) *Authorization of the Guarantees*. The Guarantees have been
duly authorized by the Company; and the Guarantees, when the Notes have been authenticated in the manner provided for in the Indenture
and issued and delivered against payment of the purchase price therefor, will be entitled to the benefits of the Indenture and will be
the valid and binding obligations of the Company, enforceable against the Company in accordance with their terms except as the enforceability
thereof may be limited by bankruptcy, insolvency or similar laws affecting creditors' rights generally and rights of acceleration
and the availability of equitable remedies may be limited by equitable principles of general applicability (which principles may include
implied duties of good faith and fair dealing).

(j) *Authorization of the Base Indenture*. The Base Indenture
has been duly authorized, validly executed and delivered by each of the Company and the Issuer and constitutes a valid and binding agreement
of each of the Company and the Issuer, enforceable against the Company and the Issuer in accordance with its terms except as the enforceability
thereof may be limited by bankruptcy, insolvency or similar laws affecting creditors' rights generally and rights of acceleration
and the availability of equitable remedies may be limited by equitable principles of general applicability (which principles may include
implied duties of good faith and fair dealing).

(k) *Authorization of the Supplemental Indenture*. The Supplemental
Indenture has been duly authorized, validly executed and delivered by each of the Company and the Issuer and constitutes a valid and
binding agreement of each of the Company and the Issuer, enforceable against the Company and the Issuer in accordance with its terms
except as the enforceability thereof may be limited by bankruptcy, insolvency or similar laws affecting creditors' rights generally
and rights of acceleration and the availability of equitable remedies may be limited by equitable principles of general applicability
(which principles may include implied duties of good faith and fair dealing).

(l) *Authorization of the Officer's Certificate*. The Officer's
Certificate has been duly authorized and, when executed and delivered by the Issuer, will constitute a valid and binding agreement of
the Issuer, enforceable against the Issuer in accordance with its terms except as the enforceability thereof may be limited by bankruptcy,
insolvency or similar laws affecting creditors' rights generally and rights of acceleration and the availability of equitable remedies
may be limited by equitable principles of general applicability (which principles may include implied duties of good faith and fair dealing).

(m) *Description of the Transaction Documents*. The Transaction
Documents will conform in all material respects to the respective statements, if any, relating thereto contained in the General Disclosure
Package.

(n) *Incorporation and Good Standing of the Company*. The Company
has been duly incorporated and exists as a public limited liability company (*naamloze vennootschap*) under the laws of The Netherlands,
with corporate power to own its properties and conduct its business as described in the General Disclosure Package, and has been duly
qualified as a foreign corporation for the transaction of business and is in good standing under the laws of each other jurisdiction
in which it owns or leases properties, or conducts any business, so as to require such qualification, other than where the failure to
be so qualified or in good standing would not, individually or in the aggregate, result in a material adverse change in or effect on
the business, prospects, condition (financial or other), shareholders' equity or results of operations of the Company and its subsidiaries,
taken as a whole (a "**Material Adverse Change** ").

(o) *Incorporation and Good Standing of the Issuer*. The Issuer
has been duly formed as a limited liability company under the laws of the State of Delaware, with the power to own its properties and
conduct its business as described in the General Disclosure Package, and has been duly qualified as a limited liability company for the
transaction of business and is in good standing under the laws of each other jurisdiction in which it owns or leases properties, or conducts
any business, so as to require such qualification, other than where the failure to be so qualified or in good standing would not, individually
or in the aggregate, result in a Material Adverse Change.

(p) *Significant Subsidiaries*. Each subsidiary of the Company
that is a significant subsidiary as defined in Regulation S-X, Item 1-02(w) promulgated by the Commission (collectively, the
 "**Significant Subsidiaries**") has been duly organized and is validly existing under the laws of its jurisdiction of
organization, with power and authority (corporate, limited liability company or limited partnership) to own its properties and conduct
its business as described in the General Disclosure Package, and has been duly qualified for the transaction of business and is in good
standing under the laws of each jurisdiction in which it owns or leases properties, or conducts any business, so as to require such qualification,
other than where the failure to be so qualified or in good standing would not, individually or in the aggregate, result in a Material
Adverse Change; and all the outstanding shares of capital stock or other ownership interests of each Significant Subsidiary have been
duly authorized and validly issued, are fully paid and nonassessable, and (except (i) in the case of foreign subsidiaries, for directors'
qualifying shares, (ii) the pledge of such stock or other ownership interests pursuant to the security agreements, pledge agreements,
indentures, mortgages and deeds of trust securing or permitted by the Company's senior secured debt as set forth in the General
Disclosure Package and (iii) as otherwise set forth in the General Disclosure Package) are owned by the Company, directly or indirectly,
free and clear of all liens, encumbrances, security interests or similar claims other than as disclosed in the General Disclosure Package
or as would not result in a Material Adverse Change (each, a "**Lien** ").

(q) *Capitalization and Other Capital Stock Matters; Material Adverse Change.* There has not been any material change in the capital stock or long-term debt of the Company or any of its subsidiaries,
or any Material Adverse Change, from that set forth in the General Disclosure Package (exclusive of any amendments or supplements thereto
subsequent to the date of this Agreement); and, except as set forth in the General Disclosure Package (exclusive of any amendments or
supplements thereto subsequent to the date of this Agreement), neither the Company nor any of its subsidiaries has entered into any transaction
or agreement (whether or not in the ordinary course of business) or incurred any liability, direct or contingent, material to the Company
and its subsidiaries taken as a whole.

(r) *No Finder's Fee*. Except as disclosed in the General
Disclosure Package or contemplated by this Agreement, there are no contracts, agreements or understandings between the Company or any
of its subsidiaries and any person that would give rise to a valid claim against the Company or any of its subsidiaries or any Underwriter
for a brokerage commission, finder's fee or other like payment in connection with the offering of the Securities.

(s) *Non-Violation of Existing Instruments; No Further Authorizations or Approvals Required*. Neither the Company nor any of its subsidiaries is, or with the giving of notice or lapse of time or both
would be, in violation of or in default under, its certificate of incorporation or memorandum or articles of association or bylaws or
other constitutive documents or any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the
Company or any of its subsidiaries is a party or by which it or any of them or any of their respective properties is bound, except for
violations and defaults which individually and in the aggregate would not result in a Material Adverse Change. The offer and sale of
the Securities hereunder and the performance by each of the Company and the Issuer of their respective obligations under the Transaction
Documents, as applicable, and the consummation of the transactions contemplated herein and therein will not conflict with or result in
a breach of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement
or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries
is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject (except where any such foregoing
occurrence will not prevent the consummation of the transactions contemplated herein and would not result in a Material Adverse Change),
or result in the imposition or creation of (or the obligation to create or impose) a Lien under, any agreement or instrument to which
the Company or any of its subsidiaries is party or by which the Company or any of its subsidiaries or their respective property is bound
(except where any such imposition or creation of a Lien will not prevent the consummation of the transactions contemplated herein and
would not reasonably be expected to result in a Material Adverse Change), nor will any such action result in any violation of (i) the
provisions of the articles of association or the rules of the boards of directors of the Company or the Issuer or of any applicable
law or statute or (ii) any order, rule or regulation of any court or governmental agency or body having jurisdiction over the
Company, its subsidiaries or any of their respective properties; and no consent, approval, authorization, order, license, registration
or qualification of or with any such court or governmental agency or body is required to be obtained by the Company or the Issuer for
the offer and sale of the Securities by the Company and the Issuer hereunder or the consummation by the Company and the Issuer of the
transactions contemplated by the Transaction Documents, as applicable, except such consents, approvals, authorizations, orders, licenses,
registrations or qualifications as have been obtained or made under the Act and as may be required under state securities or blue sky
laws, the rules and regulations of the Financial Industry Regulatory Authority, Inc. ()"**FINRA**") in connection
with the purchase and distribution of the Securities by the Underwriters.

(t) *Preparation of the Financial Statements.* The financial
statements and the related notes thereto included or incorporated by reference in the General Disclosure Package present fairly the consolidated
financial position of the Company and its consolidated subsidiaries as of the dates indicated and the results of their operations and
changes in their consolidated cash flows for the periods specified; and such financial statements have been prepared in conformity with
generally accepted accounting principles in the United States applied on a consistent basis, and the supporting schedules, if any, included
or incorporated by reference in the General Disclosure Package present fairly the information required to be stated therein. The other
financial and statistical information and data included or incorporated by reference in the General Disclosure Package (and any amendment
or supplement thereto) are, in all material respects, accurately presented and prepared on a basis consistent with such financial statements
and the books and records of the Company.

(u) *Independent Registered Public Accounting Firm.* PricewaterhouseCoopers
LLP, who have certified certain financial statements of the Company (and its predecessor) and its subsidiaries are independent public
accountants as required by the Act and the Exchange Act.

(v) *Disclosure Controls.* Other than as set forth in the General
Disclosure Package, the Company and its subsidiaries maintain an effective system of "disclosure controls and procedures"
(as defined in Rule 13a-15(e) under the Exchange Act). The Company and its subsidiaries have carried out evaluations of the
effectiveness of their disclosure controls and procedures as required by Rule 13a-15 of the Exchange Act.

(w) *Internal Controls and Procedures*. Other than as set forth
in the General Disclosure Package, the Company maintains (i) effective internal control over financial reporting as defined in Rule 13a-15
under the Exchange Act, and (ii) a system of internal accounting controls sufficient to provide reasonable assurance that (A) transactions
are executed in accordance with management's general or specific authorizations; (B) transactions are recorded as necessary
to permit preparation of financial statements in conformity with generally accepted accounting principles in the United States and to
maintain asset accountability; (C) access to assets is permitted only in accordance with management's general or specific
authorization; and (D) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate
action is taken with respect to any differences. Except as disclosed in the General Disclosure Package, or in any document incorporated
by reference therein, since the end of the Company's most recent fiscal year, there has been (i) no material weakness in the
Company's internal control over financial reporting (whether or not remediated) and (ii) no change in the Company's
internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company's
internal control over financial reporting.

(x) *No Material Actions or Proceedings*. Other than as set forth
in the General Disclosure Package, there are no legal or governmental investigations, actions, suits or proceedings pending or, to the
knowledge of the Company, threatened against or affecting the Company or any of its subsidiaries or any of their respective properties
or to which the Company or any of its subsidiaries is or may be a party or to which any property of the Company or any of its subsidiaries
is or may be the subject which would individually or in the aggregate reasonably be expected to result in a Material Adverse Change or
have a material adverse effect on the ability of the Company or the Issuer to perform their respective obligations under the Transaction
Documents; and there are no statutes, regulations, contracts or other documents that are required by the Act to be disclosed in the Registration
Statement and the General Disclosure Package which are not so disclosed (including by way of incorporation by reference).

(y) *Title to Properties*. The Company and its subsidiaries have
good and marketable title in fee simple to all items of real property and good title to all personal property owned by them, in each
case free and clear of all liens, encumbrances and defects except (i) as described or referred to in the General Disclosure Package
or (ii) such other encumbrances and defects that do not affect the value of such property and do not interfere with the use made
or proposed to be made of such property by the Company and its subsidiaries in any manner that would result in a Material Adverse Change;
and any real property and buildings held under lease by the Company and its subsidiaries are held by them under valid, existing and enforceable
leases with such exceptions as are not material and do not interfere with the use made or proposed to be made of such property and buildings
by the Company or its subsidiaries.

(z) *Related Party Transactions.* No relationship, direct or
indirect, exists between or among the Company or any of its subsidiaries on the one hand, and the directors, officers, shareholders,
customers or suppliers of the Company or any of its subsidiaries on the other hand, which is required by the Act to be described (including
by way of incorporation by reference) in the Registration Statement and the General Disclosure Package which is not so described.

(aa) *All Necessary Permits, etc.* Each of the Company and
its subsidiaries owns, possesses or has obtained all licenses, permits, certificates, consents, orders, approvals and other authorizations
from, and has made all declarations and filings with, all federal, state, local and other governmental authorities (including foreign
regulatory agencies), all self-regulatory organizations and all courts and other tribunals, domestic or foreign, necessary to own or
lease, as the case may be, and to operate its properties and to carry on its business as conducted as of the date hereof, except such
as would not, individually or in the aggregate, result in a Material Adverse Change, and neither the Company nor any such subsidiary
has received any actual notice of any proceeding relating to revocation or modification of any such license, permit, certificate, consent,
order, approval or other authorization which, if determined adversely to the Company or any of its subsidiaries could, individually or
in the aggregate, result in a Material Adverse Change; and each of the Company and its subsidiaries is in compliance with all laws and
regulations relating to the conduct of its business as conducted as of the date hereof, except where the failure to so comply would not,
individually or in the aggregate, result in a Material Adverse Change.

(bb) *Tax Law Compliance.* The Company and its subsidiaries have
filed all federal, state, local and non-U.S. tax returns which have been required to be filed and have paid all taxes and all assessments
received by them or any of them to the extent that such taxes or assessments have become due and are not being contested in good faith,
except to the extent that the failure to file or pay, as applicable, such returns, taxes and assessments would not, individually or in
the aggregate, result in a Material Adverse Change.

(cc) *Labor Matters*. There are no existing or, to the knowledge
of the Company, threatened labor disputes with the employees of the Company or any of its subsidiaries which are likely to result in
a Material Adverse Change.

(dd) *Compliance with and Liability under Environmental Laws.* The Company and its subsidiaries (i) are in compliance with any and all applicable foreign, federal, state and local laws and regulations
relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants
(" **Environmental Laws** "), (ii) have received all permits, licenses or other approvals required of them under applicable
Environmental Laws to conduct their respective businesses and (iii) are in compliance with all terms and conditions of any such
permit, license or approval, except where such noncompliance with Environmental Laws, failure to receive required permits, licenses or
other approvals or failure to comply with the terms and conditions of such permits, licenses or approvals would not, individually or
in the aggregate, result in a Material Adverse Change, and except as disclosed in the General Disclosure Package.

(ee) *Periodic Review of Costs of Environmental Compliance.* In
the ordinary course of its business, the Company conducts a periodic review of the effect of Environmental Laws on the business, operations
and properties of the Company and its subsidiaries, in the course of which it identifies and evaluates associated costs and liabilities
(including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with
Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential liabilities
to third parties). On the basis of such review and the amount of its established reserves, the Company has reasonably concluded that
such associated costs and liabilities would not, individually or in the aggregate, result in a Material Adverse Change, except as disclosed
in the General Disclosure Package.

(ff) *Insurance.* Each of the Company and its subsidiaries is
insured by recognized, financially sound institutions with policies in such amounts and with such deductibles and covering such risks
as are generally deemed adequate and customary for their businesses including, without limitation, policies covering real and personal
property owned or leased by the Company and its subsidiaries against theft, damage, destruction, acts of vandalism and earthquakes. The
Company does not have any reason to believe that it or any subsidiary will not be able (i) to renew its existing insurance coverage
as and when such policies expire or (ii) to obtain comparable coverage from similar institutions as may be necessary or appropriate
to conduct its business as now conducted and at a cost that would not result in a Material Adverse Change.

(gg) *ERISA Compliance.* Except as would not, individually or
in the aggregate, result in a Material Adverse Change, (i) each "employee benefit plan" (as defined under the Employee
Retirement Income Security Act of 1974 (as amended, "**ERISA** "), which term, as used herein, includes the regulations
and published interpretations thereunder) established or maintained by the Company, its subsidiaries or their ERISA Affiliates (as defined
below) is in compliance with ERISA, (ii) no "reportable event" (as defined under ERISA) has occurred or is reasonably
expected to occur with respect to any "employee benefit plan" established or maintained by the Company, its subsidiaries
or any of their ERISA Affiliates, (iii) no "employee benefit plan" for which the Company or any ERISA Affiliate could
have any liability has failed to satisfy the minimum funding standard (within the meaning of Section 412 of the Internal Revenue
Code of 1986 (as amended, the "**Code**," which term, as used herein, includes the regulations and published interpretations
thereunder) or Section 302 of ERISA) applicable to such plan or filed pursuant to Section 412(c) of the Code or Section 302(c) of
ERISA an application for a waiver of the minimum funding standard with respect to any such "employee benefit plan," (iv) neither
the Company, its subsidiaries nor any of their ERISA Affiliates has incurred or reasonably expects to incur any liability under (A) Title
IV of ERISA with respect to termination of, or withdrawal from, any "employee benefit plan" that has not been satisfied in
full or (B) Sections 4971 or 4975 of the Code, and (v) each "employee benefit plan" established or maintained by
the Company, its subsidiaries or any of their ERISA Affiliates that is intended to be qualified under Section 401 of the Code has
received a favorable determination letter from the Internal Revenue Service with respect to its qualified status and the Company is not
aware of any circumstances reasonably likely to result in the loss of the qualification of any such plan under Section 401 of the
Code. "**ERISA Affiliate**" means, with respect to the Company or a subsidiary, any member of any group of organizations
described in Section 414 of the Code of which the Company or such subsidiary is a member.

(hh) *No Unlawful Contributions or Other Payments.* Except as
otherwise disclosed in the General Disclosure Package, neither the Company nor, to the knowledge of the Company, any of its subsidiaries
or any director, officer, agent, employee or affiliate of the Company or any of its subsidiaries, is aware of or, has taken any action,
directly or indirectly, that would result in a violation by such persons of (i) the FCPA, including, without limitation, making
use of the mails or any means or instrumentality of interstate commerce corruptly in furtherance of an offer, payment, promise to pay
or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of
value to any "foreign official" (as such term is defined in the FCPA) or any foreign political party or official thereof
or any candidate for foreign political office, in contravention of the FCPA; (ii) the Bribery Act 2010 of the United Kingdom (the
 "**UK Bribery Act** "); or (iii) any other applicable anti-bribery or corruption law (collectively, the "**Anti-Bribery Laws** "). Except as otherwise disclosed in the General Disclosure Package, the Company and, to the knowledge of the Company,
its affiliates, have conducted their businesses in compliance with the Anti-Bribery Laws and have instituted and maintain policies and
procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith. "**FCPA** "
means the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder.

(ii) *No Conflict with Anti-Money Laundering Laws.* Except as
otherwise disclosed in the General Disclosure Package, the operations of the Company and, to the knowledge of the Company, the operations
of its subsidiaries, are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements
of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the applicable anti-money laundering statutes of all jurisdictions,
the rules and regulations thereunder and any related or similar rules, regulations or guidelines issued, administered or enforced
by any governmental agency (collectively, the "**Anti-Money Laundering Laws**") and no action, suit or proceeding by or
before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect
to the Anti-Money Laundering Laws is pending or, to the best knowledge of the Company or any of its subsidiaries, threatened. Except
as otherwise disclosed in the General Disclosure Package, the Company and, to the knowledge of the Company, its affiliates, have conducted
their businesses in compliance with the Anti-Money Laundering Laws and have instituted policies and procedures designed to ensure, and
which are reasonably expected to continue to ensure, continued compliance therewith.

(jj) *No Conflict with Sanctions Laws.* Except as otherwise disclosed
in the General Disclosure Package, neither the Company nor, to the knowledge of the Company, any of its subsidiaries (collectively (for
purposes of this paragraph only), the "**Company**") or any director, officer, employee, agent, controlled affiliate or
representative of the Company is an individual or entity ()"**Person**") currently the subject of any sanctions administered
or enforced by the U.S. Department of Treasury's Office of Foreign Assets Control ()"**OFAC** "), the U.S. Department
of State, the U.S. Department of Commerce, the United Nations Security Council ()"**UNSC** "), the European Union ()"**EU** "),
HM Treasury ()"**HMT** "), or other relevant sanctions authority (collectively, "**Sanctions** "), nor is
the Company located, organized or resident in a country or territory that is the subject of Sanctions. The Company will not directly
or indirectly use the proceeds of the offering of the Securities hereunder, or lend, contribute or otherwise make available such proceeds
to any subsidiary, joint venture partner or other person or entity to fund any activities of or business with any Person, or in any country
or territory, that, at the time of such funding, is (i) the subject of Sanctions or (ii) owned 50% or more by or otherwise
controlled by, or acting on behalf of, any Person that is the subject of Sanctions.

(kk) *Reserved.*

(ll) *No Restrictions on Dividends*. No subsidiary of the Company
is currently prohibited, directly or indirectly, from paying any dividends to the Company, from making any other distribution on such
subsidiary's shares of capital stock or other ownership interests, from repaying to the Company any loans or advances to such subsidiary
from the Company or from transferring any of such subsidiary's property or assets to the Company or any other subsidiary of the
Company, except as described in the General Disclosure Package.

(mm) *Not an "Investment Company."* Neither the Company
nor the Issuer is and, after giving effect to the offer and sale of the Securities and the application of the net proceeds thereof as
described in the General Disclosure Package, neither the Company nor the Issuer will be, an "investment company," as such
term is defined in the Investment Company Act of 1940, as amended (the "**Investment Company Act** ").

(nn) *Ratings*. Since January 1, 2025, no "nationally
recognized statistical rating organization" as such term is defined in Section 3(a)(62) of the Exchange Act has imposed (or
has informed the Company that it is considering imposing) any condition (financial or otherwise) on the Company's or the Issuer's
retaining any rating assigned to the Company or any subsidiary, any securities of the Company or any subsidiary or has indicated to the
Company that it is considering the downgrading, suspension, or withdrawal of, or any review for a possible change that does not indicate
the direction of the possible change in, any rating so assigned of the Company or any subsidiary or any securities of the Company or
any subsidiary.

(oo) *Regulations T, U and X*. Neither the Company nor any of
its subsidiaries nor any agent thereof acting on the behalf of them, other than the Underwriters, as to which the Company does not make
any representations, has taken, and none of them will take, any action that might cause this Agreement or the issuance or sale of the
Securities to violate Regulation T (12 C.F.R. Part 220), Regulation U (12 C.F.R. Part 221) or Regulation X (12 C.F.R. Part 224)
of the Board of Governors of the Federal Reserve System.

(pp) *No Price Stabilization or Manipulation*. Neither the Company
nor the Issuer has taken nor will take, directly or indirectly, any action designed to or that might be reasonably expected to cause
or result in stabilization or manipulation of the price of any security of the Company or the Issuer to facilitate the sale or resale
of the Securities.

(qq) *Residency of Company*. The Company is resident in the United
Kingdom for tax purposes.

(rr) *Securities Free of Taxes*. Except for any net income, capital
gains and/or franchise taxes imposed on the Underwriters by The Netherlands or the United Kingdom or any political subdivision or taxing
authority thereof or therein as a result of any present or former connection (other than any connection resulting solely from the transactions
contemplated by the Transaction Documents and the General Disclosure Package) between the Underwriters and the jurisdiction imposing
such tax, no stamp or other issuance or transfer taxes or duties and no capital gains, income, withholding or other taxes are required
to be paid by or on behalf of the Underwriters to The Netherlands or the United Kingdom or any political subdivision or taxing authority
thereof or therein, in connection with (i) the execution, delivery or consummation of the Transaction Documents or any other document
or instrument to be furnished hereunder or thereunder; (ii) the sale of the Securities to the Underwriters in the manner contemplated
herein; or (iii) the initial resale and delivery of such Securities by the Underwriters in the manner contemplated in the General
Disclosure Package.

(ss) *Local Qualification*. It is not necessary under the laws
of The Netherlands (i) to enable the Underwriters to enforce their rights under this Agreement or any other document or instrument
to be furnished hereunder, to enable any holder of Securities to enforce their respective rights under the Indenture, the Securities
or any other document or instrument to be furnished thereunder, *provided* that they are not otherwise engaged in business in The
Netherlands, or (ii) solely by reason of the execution, delivery or consummation of the Transaction Documents or the offering or
sale of the Securities, for any of the Underwriters, any holder of Securities or the Company or the Issuer to be licensed, qualified
or entitled to carry out business in The Netherlands.

(tt) *Form of Transaction Documents*. The Transaction Documents
and any other document or instrument to be furnished hereunder or thereunder are in proper form under the laws of The Netherlands for
the enforcement thereof against the Company or the Issuer, and to ensure the legality, validity, enforceability or admissibility into
evidence in The Netherlands of each of the Transaction Documents and any other document or instrument to be furnished hereunder or thereunder,
it is not necessary that any such document or instrument to be furnished hereunder or thereunder be filed or recorded with any court
or other authority in The Netherlands.

(uu) *Distributions on the Securities*. Except as disclosed in
the General Disclosure Package, all interest and other distributions on the Securities may under the current law and regulations of The
Netherlands and the United Kingdom be paid in U.S. dollars that may be freely transferred out of The Netherlands and the United Kingdom
and all such interest and other distributions on the Securities will not be subject to withholding or other taxes under the laws and
regulations of The Netherlands or the United Kingdom and are otherwise free and clear of any other tax, withholding or deduction in The
Netherlands and the United Kingdom and without the necessity of obtaining any consent, approval, authorization, filing with or order
of any court or governmental agency or body in The Netherlands or the United Kingdom.

(vv) *Submission to Jurisdiction; Agent for Service of Process*.
The Company has the power to submit, and pursuant to Section **‎** 16(a) of this Agreement has, to the extent permitted
by law, legally, validly, effectively and irrevocably submitted, to the jurisdiction of the Specified Courts (as defined in Section **‎** 16(a) of
this Agreement), and has the power to designate, appoint and empower, and pursuant to Section **‎** 16(a) of this Agreement,
has legally, validly and effectively designated, appointed and empowered an agent for service of process in any suit or proceeding based
on or arising under this Agreement in any of the Specified Courts.

(ww) *Immunity from Jurisdiction*. Neither the Company nor any
of its subsidiaries nor any of its or their properties or assets has any immunity from the jurisdiction of any court or from any legal
process (whether through service or notice, attachment prior to judgment, attachment in aid of execution or otherwise) under the laws
of The Netherlands.

(xx) *Cybersecurity.* To the knowledge of the Company, there has
been no security breach or incident, unauthorized access or disclosure, or other compromise of or relating to the Company's or
its subsidiaries' information technology and computer systems, networks, hardware, software, data and databases (including the
data and information of their respective customers, employees, suppliers, vendors and any third-party data maintained, processed or stored
by the Company and its subsidiaries) (collectively, "**IT Systems and Data** "), nor any investigations under internal
review relating to the same, except, in each case, as would not, individually or in the aggregate, result in a Material Adverse Change;
and the Company and its subsidiaries have implemented commercially reasonable controls, policies, procedures, and technological safeguards
to maintain and protect the integrity, continuous operation, redundancy and security of their IT Systems and Data reasonably consistent
with industry standards and practices, or as required by applicable regulatory standards. The Company and its subsidiaries are presently
in material compliance with all applicable laws or statutes and all judgments, orders, rules and regulations of any court or arbitrator
or governmental or regulatory authority, internal policies and contractual obligations relating to the privacy and security of IT Systems
and Data and to the protection of such IT Systems and Data from unauthorized use, access, misappropriation or modification.

3. *Purchase, Sale and Delivery of Securities*. On the basis
of the representations, warranties and agreements and subject to the terms and conditions set forth herein, the Issuer agrees to sell
to each Underwriter, and each Underwriter agrees, severally and not jointly, to purchase from the Issuer, the respective principal amount
of Notes set forth opposite the name of each such Underwriter on <u>Schedule A</u> hereto at a purchase price equal to 99.206% of the
principal amount of the 2031 Notes and 98.629 % of the principal amount of the 2036 Notes, in each case plus accrued interest, if any,
from November 13, 2025 to the Closing Date.

The Issuer will deliver the Notes through the facilities of DTC to or as instructed by the Representatives for the accounts of the several Underwriters against payment of the purchase price by the Underwriters in Federal (same day) funds by wire transfer to the account specified by the Company at 10:00 A.M., New York time, on November 13, 2025, or at such other date or time as shall be determined by agreement among the Representatives, the Company and the Issuer, such date and time being herein referred to as the "**Closing Date**." For purposes of Rule 15c6-1 under the Exchange Act, the Closing Date (if later than the otherwise applicable settlement date) shall be the settlement date for payment of funds and delivery of all the Securities sold pursuant to the offering. On the Closing Date, the Company will deliver to the Trustee, as nominee for DTC, one or more global securities for each of the 2031 Notes and the 2036 Notes, in definitive form registered in the name of Cede & Co., as nominee of the DTC, through the office of Davis Polk & Wardwell LLP, at 450 Lexington Avenue, New York, New York 10017.

4. *Offering by Underwriters*. It is understood that the several
Underwriters propose to offer the Securities for sale to the public as set forth in the Final Prospectus.

5. *Certain Agreements of the Company and the Issuer.* The Company
and the Issuer, jointly and severally, agree with the several Underwriters that:

(a) *Filing of Pricing Term Sheet and Final Prospectus.* The
Company and the Issuer will prepare and file the Pricing Term Sheet pursuant to Rule 433(d) under the Act within the time required
by such Rule. The Company and the Issuer will timely file the Final Prospectus pursuant to and in accordance with Rule 424(b). The
Company and the Issuer will advise the Representatives promptly of any such filing pursuant to Rule 424(b).

(b) *Filing of Amendments; Response to Commission Requests*.
The Company and the Issuer will promptly advise the Representatives of any proposal to amend or supplement the Registration Statement
or any Statutory Prospectus at any time and will not effect such amendment or supplement without the Representatives' prior written
consent (not to be unreasonably withheld), except that such consent shall not be required if, in the written opinion of outside counsel
to the Company and the Issuer, such amendment or supplement is required by law; and the Company and the Issuer will also advise the Representatives
promptly of (i) the filing of any such amendment or supplement, (ii) any request by the Commission or its staff for any amendment
to the Registration Statement, for any supplement to any Statutory Prospectus or for any additional information, (iii) the institution
by the Commission of any stop order proceedings in respect of the Registration Statement or the threatening of any proceeding for that
purpose, and (iv) the receipt by the Company or the Issuer of any notification with respect to the suspension of the qualification
of the Securities in any jurisdiction or the institution or threatening of any proceedings for such purpose. The Company and the Issuer
will use their commercially reasonable efforts to prevent the issuance of any such stop order or the suspension of any such qualification
and, if issued, to obtain as soon as possible the withdrawal thereof.

(c) *Continued Compliance with Securities Laws*. If, at any time
when a prospectus relating to the Securities is (or but for the exemption in Rule 172 would be) required to be delivered under the
Act by any Underwriter or dealer, any event occurs as a result of which the Final Prospectus as then amended or supplemented would include
an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light
of the circumstances under which they were made, not misleading, or if it is necessary at any time to amend the Registration Statement
or supplement the Final Prospectus to comply with the Act, the Company and the Issuer will promptly notify the Representatives of such
event and will promptly prepare and file with the Commission and furnish, at their own expense, to the Underwriters and the dealers and
any other dealers upon request of the Representatives, an amendment or supplement which will correct such statement or omission or an
amendment which will effect such compliance. Neither the Representatives' consent to, nor the Underwriters' delivery of,
any such amendment or supplement shall constitute a waiver of any of the conditions set forth in Section **‎** 7 hereof.

(d) *Rule 158.* As soon as practicable, but not later than
the Availability Date, the Company will make generally available to its shareholders an earnings statement covering a period of at least
12 months beginning after the date of this Agreement and satisfying the provisions of Section 11(a) of the Act and Rule 158.
For the purpose of the preceding sentence, "**Availability Date**" means the day after the end of the fourth fiscal quarter
following the fiscal quarter that includes such Effective Time on which the Company is required to file its Form 10-Q for such fiscal
quarter except that, if such fourth fiscal quarter is the last quarter of the Company's fiscal year, "**Availability Date** "
means the day after the end of such fourth fiscal quarter on which the Company is required to file its Form 10-K.

(e) *Furnishing of Prospectuses*. The Company will furnish to
the Representatives copies of the Registration Statement (none of which will be signed), including all exhibits, any Statutory Prospectus,
the Final Prospectus and all amendments and supplements to such documents, in each case as soon as available and in such quantities as
the Representatives reasonably request. The Final Prospectus shall be so furnished on or prior to the earlier of (i) 5:30 P.M.,
New York time, on the second business day following the later of the execution and delivery of this Agreement or the Effective Time of
the Registration Statement and (ii) immediately prior to the delivery of the Notes on the Closing Date. All other such documents
shall be so furnished as soon as available. If printing is requested by the Underwriters, the Company and the Issuer will pay the expenses
of printing and distributing to the Underwriters all such documents.

(f) *Use of Proceeds*. The Company and the Issuer upon the Closing
Date will apply the net proceeds from the sale of the Securities as set forth under "Use of Proceeds" in the General Disclosure
Package and the Final Prospectus.

(g) *The Depositary*. The Company and the Issuer will cooperate
with the Underwriters and use their commercially reasonable efforts to permit the Notes to be eligible for clearance and settlement through
the facilities of the DTC.

(h) *Blue Sky Qualifications*. The Company and the Issuer will
arrange to obtain the qualification of the Securities for sale and the determination of their eligibility for investment under the laws
of such jurisdictions in the United States and Canada as the Representatives reasonably request and will continue such qualifications
in effect so long as required for the resale of the Securities by the Underwriters; *provided* that in no event shall the Company
or the Issuer be obligated to qualify to do business in any jurisdiction where it is not now so qualified or to take any action that
would subject it to service of process in suits, other than those arising out of the offering or sale of the Securities, in any jurisdiction
where it is not now so subject.

(i) *Reporting Requirements*. During the period of two years
hereafter, the Company will furnish to the Representatives and, upon request, to each of the other Underwriters, as soon as practicable
after the end of each fiscal year, a copy of its annual report to shareholders for such year; and the Company will furnish to the Representatives
(i) as soon as publicly available, a copy of each report and any definitive proxy statement of the Company filed with the Commission
under the Exchange Act or mailed to shareholders, and (ii) from time to time, such other information concerning the Company as the
Representatives may reasonably request. However, so long as the Company is subject to the reporting requirements of either Section 13
or Section 15(d) of the Exchange Act and is timely filing reports with the Commission on EDGAR, it is not required to furnish
such reports or statements to the Underwriters.

(j) *Payment of Expenses*. The Company and the Issuer will pay
all expenses incident to the performance of the obligations of the Company and the Issuer under this Agreement, including but not limited
to (i) all such expenses incident to the sale and delivery of the Securities (including all printing and engraving costs, if any),
(ii) all necessary issue, transfer and other stamp taxes in connection with the sale of the Securities by the Company and the Issuer
to the Underwriters or the resale and delivery of such Securities by the Underwriters as contemplated in the Final Prospectus, (iii) all
such fees and expenses of the Company's and the Issuer's counsel, independent public or certified public accountants and
other advisors, (iv) all such costs and expenses incurred in connection with the preparation, printing, filing, shipping and distribution
of the General Disclosure Package and the Final Prospectus (including financial statements and exhibits, as applicable), and all amendments
and supplements thereto, and the Transaction Documents, (v) all filing fees, such attorneys' fees and expenses incurred by
the Company, the Issuer or the Underwriters in connection with qualifying or registering (or obtaining exemptions from the qualification
or registration of) all or any part of the Securities for offer and sale under the securities laws of the several states of the United
States, the provinces of Canada or other jurisdictions designated by the Underwriters pursuant to Section **‎** 5(f) hereof
(including, without limitation, the cost of preparing, printing and mailing preliminary and final blue sky or legal investment memoranda
and any related supplements to the General Disclosure Package or the Final Prospectus), (vi) such fees and expenses of the Trustee,
including the fees and disbursements of counsel for the Trustee in connection with the Indenture and the Securities, (vii) any fees
payable in connection with the rating of the Notes with the ratings agencies, (viii) any filing fees incident to, and such fees
and disbursements of counsel to the Underwriters in connection with the review by FINRA, if any, of the terms of the sale of the Securities,
(ix) all such fees and expenses (including reasonable out-of-pocket fees and expenses of counsel) of the Company and the Issuer
in connection with approval of the Notes by the DTC for "book-entry" transfer, and the performance by the Company and the
Issuer of their other respective obligations under this Agreement, (x) all such fees and expenses (including reasonable out-of-pocket
fees and expenses of counsel) of the Company and the Issuer in connection with the performance by the Company and the Issuer of their
respective obligations under this Agreement and (xi) all reasonable and documented marketing and "road show" expenses.
Except as provided in this Section **‎** 5(j) and Sections **‎** 8 and **‎** 9 hereof, the Underwriters
shall pay their own expenses, including the fees and disbursements of their counsel, on a pro rata basis in accordance with the amount
of Notes purchased by such Underwriter as set forth on <u>Schedule A</u>.

(k) *Absence of Manipulation*. Neither the Company nor the Issuer
will take, directly or indirectly, any action designed to, or that would constitute, or that might reasonably be expected to cause or
result in, stabilization or manipulation of the price of any securities of the Company or the Issuer to facilitate the sale or resale
of the Securities.

(l) *Restriction on Sale of Securities.* From the date of this
Agreement until the day after the Closing Date, neither the Company nor the Issuer will, without the prior written consent of the Representatives
(which consent may be withheld at the sole discretion of the Representatives), directly or indirectly, sell, offer, contract or grant
any option to sell, pledge, transfer or establish an open "put equivalent position" within the meaning of Rule 16a-1
under the Exchange Act, or otherwise dispose of or transfer, or announce the offering of, or file any registration statement under the
Act in respect of, any debt securities of the Company or the Issuer having a tenor of more than one year or securities exchangeable for
or convertible into debt securities of the Company or the Issuer having a tenor of more than one year (other than as contemplated by
this Agreement and the Final Prospectus).

(m) *USA PATRIOT Act.* In accordance with the requirements of
the USA PATRIOT Act, each of the Company and the Issuer acknowledges and agrees that the Underwriters are required to obtain, verify
and record information that identifies their respective clients, including the Company and the Issuer, which information may include
the name and address of their respective clients, as well as other information that will allow the Underwriters to properly make such
identifications.

(n) *Affiliates*. Offers and sales of Securities will be made
only by the Underwriters or affiliates thereof qualified to do so in the jurisdictions in which such offers or sales are made. The Underwriters
may perform certain of their services contemplated hereby through their affiliates and any of their affiliates performing services hereunder
shall be entitled to the benefits and be subject to the terms and conditions of this Agreement.

6. *Free Writing Prospectuses*. Each of the Company and the
Issuer represents and agrees that, unless it obtains the prior consent of the Representatives, and each Underwriter represents and agrees
that, unless it obtains the prior consent of each of the Company, the Issuer and the Representatives, it has not made and will not make
any offer relating to the Securities (other than the Pricing Term Sheet) that would constitute an Issuer Free Writing Prospectus, or
that would otherwise constitute a "free writing prospectus," as defined in Rule 405, required to be filed with the Commission.
Any such free writing prospectus consented to by the Company, the Issuer and the Representatives (including the Pricing Term Sheet) is
hereinafter referred to as a "**Permitted Free Writing Prospectus**." Each of the Company and the Issuer represents that
it has treated and agrees that it will treat each Permitted Free Writing Prospectus as an "issuer free writing prospectus,"
as defined in Rule 433, and has complied and will comply with the requirements of Rules 164 and 433 applicable to any
Permitted Free Writing Prospectus, including timely Commission filing where required, legending and record keeping.

7. *Conditions of the Obligations of the Underwriters*. The
obligations of the several Underwriters to purchase and pay for the Securities on the Closing Date will be subject to the accuracy of
the representations and warranties of the Company and the Issuer herein (as though made on the Closing Date), to the accuracy of the
statements of officers of the Company and the Issuer made pursuant to the provisions hereof, to the performance by the Company and the
Issuer of their respective obligations hereunder and to the following additional conditions precedent:

(a) *Accountants' Comfort Letter*. On the date hereof,
the Underwriters shall have received from PricewaterhouseCoopers LLP, the independent registered public accounting firm for the Company,
a "comfort letter" dated the date hereof addressed to the Underwriters, in form and substance satisfactory to the Representatives,
covering the financial information in the General Disclosure Package and other customary matters and procedures shall be brought down
to a date no more than 2 business days prior to the date hereof. In addition, on the Closing Date, the Underwriters shall have received
from PricewaterhouseCoopers LLP, a "bring-down comfort letter" dated the Closing Date addressed to the Underwriters, in form
and substance satisfactory to the Representatives, in the form of the "comfort letter" delivered on the date hereof, except
that (i) it shall cover the financial information in the Final Prospectus and any amendment or supplement thereto and (ii) procedures
shall be brought down to a date no more than 2 business days prior to the Closing Date.

(b) *Filing of Pricing Term Sheet and Prospectus.* The Pricing
Term Sheet and the Final Prospectus shall have been filed with the Commission in accordance with the Rules and Regulations and Section **‎** 5(a) hereof.
No stop order suspending the effectiveness of the Registration Statement or of any part thereof shall have been issued and no proceedings
for that purpose shall have been instituted or, to the knowledge of the Company, the Issuer or any Underwriter, shall be contemplated
by the Commission.

(c) *No Material Adverse Change or Ratings Agency Change*. For
the period from and after the date of this Agreement and prior to the Closing Date: (i) in the judgment of the Representatives there
shall not have occurred any Material Adverse Change; and (ii) there shall not have occurred any downgrading, nor shall any notice
have been given of any intended or potential downgrading or of any review for a possible change that does not indicate the direction
of the possible change, in the rating accorded the Company or any of its subsidiaries or any of their securities or indebtedness by any
 "nationally recognized statistical rating organization" as such term is defined in Section 3(a)(62) of the Exchange
Act.

(d) *Opinions of Counsel for the Company and the Issuer*. The
Representatives shall have received the favorable opinions, dated the Closing Date, of (i) De Brauw Blackstone Westbroek N.V., Dutch
counsel for the Company and the Issuer, substantially in the form of <u>Schedule C-1</u> hereto, (ii) Gibson, Dunn & Crutcher
LLP, U.S. counsel and U.S. tax counsel for the Company and the Issuer, substantially in the form of <u>Schedule C-2</u> and <u>Schedule C-3</u> hereto, (iii) Charity R. Kohl, Deputy General Counsel, Corporate Secretary for the Company, substantially in the form of <u>Schedule C-4</u> hereto, and (iv) Gibson, Dunn & Crutcher UK LLP, United Kingdom tax counsel for the Company, substantially
in the form of <u>Schedule C-5</u> hereto, in each case, subject to such customary limitations and assumptions as may be stated therein.

(e) *Opinion of Counsel for Underwriters.* The Representatives
shall have received from Davis Polk & Wardwell LLP, counsel for the Underwriters, such opinion or opinions, dated the Closing
Date, with respect to such matters as the Representatives may require. In rendering such opinions, Davis Polk & Wardwell LLP
may rely as to the incorporation of the Company and all other matters governed by the laws of the country of The Netherlands upon the
opinions referred to above in Section **‎** 7(d).

(f) *Company Officer's Certificate*. On the Closing Date,
the Underwriters shall have received a written certificate executed by one of the Chief Executive Officer, Chief Financial Officer, Chief
Accounting Officer, General Counsel, Treasurer or Assistant Treasurer of the Company, dated as of the Closing Date, to the effect set
forth in Section **‎** 7(c)(ii) hereof, and further to the effect that: (i) for the period from and after the date
of this Agreement and prior to the Closing Date there has not occurred any Material Adverse Change; (ii) the representations, warranties
and covenants of the Company set forth in Section **‎** 2 hereof were true and correct as of the date hereof and are true
and correct as of the Closing Date with the same force and effect as though expressly made on and as of the Closing Date; and (iii) the
Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied at or prior to
the Closing Date.

(g) *Issuer Officer's Certificate*. On the Closing Date,
the Underwriters shall have received a written certificate executed by an officer of the Issuer, dated as of the Closing Date, to the
effect that: (i) the representations, warranties and covenants of the Issuer set forth in Section **‎** 2 hereof were
true and correct as of the date hereof and are true and correct as of the Closing Date with the same force and effect as though expressly
made on and as of the Closing Date; and (ii) the Issuer has complied with all the agreements and satisfied all the conditions on
its part to be performed or satisfied at or prior to the Closing Date.

(h) *Additional Documents.* On or before the Closing Date, the
Underwriters and counsel for the Underwriters shall have received such information, documents and opinions as they may reasonably require
for the purposes of enabling them to pass upon the offer and sale of the Securities as contemplated herein, or to evidence the accuracy
of any of the representations and warranties, or the satisfaction of any of the conditions or agreements, herein contained.

If any condition specified in this Section ‎7 is not satisfied when and as required to be satisfied, this Agreement may be terminated by the Representatives by notice to the Company and the Issuer at any time on or prior to the Closing Date, which termination shall be without liability on the part of any party to any other party, except that Sections ‎5(j), ‎8 and ‎9 hereof shall at all times be effective and shall survive such termination.

The Company and the Issuer will furnish the Representatives with such conformed copies of such opinions, certificates, letters and documents as the Representatives reasonably request. The Representatives may in their sole discretion waive on behalf of the Underwriters compliance with any conditions to the obligations of the Underwriters hereunder.

8. *Reimbursement of Underwriters' Expenses*. If this
Agreement is terminated by the Representatives pursuant to Section **‎** 7 or Section **‎** 10 hereof (other than
solely because of the termination of this Agreement pursuant to clauses **‎** (ii), **‎** (iii) or **‎** (iv) of
Section **‎** 10) hereof, including if the sale to the Underwriters of the Securities on the Closing Date is not consummated
because of any refusal, inability or failure on the part of the Company or the Issuer to perform any agreement herein or to comply with
any provision hereof other than by reason of a default by any of the Underwriters, the Company and the Issuer, jointly and severally,
agree to reimburse the Underwriters, severally, upon demand for all out-of-pocket expenses that shall have been reasonably incurred by
the Underwriters in connection with the proposed purchase and the offering and sale of the Securities, including, without limitation,
fees and disbursements of counsel, printing expenses, travel expenses and postage.

9. *Indemnification and Contribution*. (a) *Indemnification of Underwriters by the Company and the Issuer*. The Company and the Issuer, jointly and severally, agree to indemnify and hold harmless
each Underwriter, its directors, officers and employees, its selling agent and each person, if any, who controls any Underwriter within
the meaning of the Act and the Exchange Act against any loss, claim, damage, liability or expense, as incurred, to which such Underwriter,
director, officer, employee, selling agent or controlling person may become subject, under the Act, the Exchange Act or other federal
or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is
effected with the written consent of the Company or is otherwise permitted in Section **‎** 9(d) hereof), insofar as
such loss, claim, damage, liability or expense (or actions in respect thereof as contemplated below) arises out of or is based upon any
untrue statement or alleged untrue statement of a material fact contained in any part of the Registration Statement, any Statutory Prospectus,
the Final Prospectus, or any Issuer Free Writing Prospectus, or the omission or alleged omission therefrom of a material fact required
to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made,
not misleading; and to reimburse each Underwriter and each such director, officer, employee, selling agent or controlling person for
any and all expenses (including the reasonable fees and disbursements of counsel chosen by the Representatives) as such expenses are
reasonably incurred by such Underwriter or such director, officer, employee, selling agent or controlling person in connection with investigating,
defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action; *provided*, *however*,
that the foregoing indemnity agreement shall not apply, with respect to an Underwriter, to any loss, claim, damage, liability or expense
to the extent, but only to the extent, arising out of or based upon any untrue statement or alleged untrue statement or omission or alleged
omission made in reliance upon and in conformity with written information furnished to the Company or the Issuer by such Underwriter
through the Representatives expressly for use in the General Disclosure Package or the Final Prospectus (or any amendment or supplement
thereto), it being understood and agreed that the only such information furnished by or on behalf of any Underwriter consists of the
following information in the General Disclosure Package and the Final Prospectus furnished on behalf of each Underwriter: the information
related to stabilizing transactions, syndicate covering transactions and penalty bids contained in the eighth paragraph under the caption
 "Underwriting." The indemnity agreement set forth in this Section **‎** 9(a) shall be in addition to any
liabilities that the Company and the Issuer may otherwise have.

(b) *Indemnification of the Company and the Issuer by the Underwriters*.
Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless each of the Company and the Issuer, and each of their
respective directors, officers who sign a Registration Statement and each person, if any, who controls either of the Company or the Issuer
within the meaning of the Act or the Exchange Act, against any loss, claim, damage, liability or expense, as incurred, to which such
indemnified party may become subject, under the Act, the Exchange Act, or other federal or state statutory law or regulation, or at common
law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent of such Underwriter
or is otherwise permitted in Section **‎** 9(d) hereof), insofar as such loss, claim, damage, liability or expense (or
actions in respect thereof as contemplated below) arises out of or is based upon any untrue statement or alleged untrue statement of
a material fact contained in any part of the Registration Statement, any Statutory Prospectus, the Final Prospectus, or any Issuer Free
Writing Prospectus, or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary in order
to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case to the extent,
but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration
Statement, any Statutory Prospectus, the Final Prospectus, or any Issuer Free Writing Prospectus in reliance upon and in conformity with
written information furnished to the Company or the Issuer by such Underwriter through the Representatives expressly for use therein;
and to reimburse such indemnified party for any and all expenses (including the fees and disbursements of counsel) as such expenses are
reasonably incurred by such indemnified party in connection with investigating, defending, settling, compromising or paying any such
loss, claim, damage, liability, expense or action. Each of the Company and the Issuer hereby acknowledges that the only information that
the Underwriters through the Representatives have furnished to the Company or the Issuer expressly for use in the Final Prospectus are
the statements described in Section **‎** 9(a) above. The indemnity agreement set forth in this Section **‎** 9(b) shall
be in addition to any liabilities that each Underwriter may otherwise have.

(c) *Notifications and Other Indemnification Procedures.* Promptly
after receipt by an indemnified party under this Section **‎** 9 of notice of the commencement of any action, such indemnified
party will, if a claim in respect thereof is to be made against an indemnifying party under this Section **‎** 9, notify the
indemnifying party in writing of the commencement thereof, but the failure to so notify the indemnifying party will not relieve such
indemnifying party from any liability which it may have to any indemnified party under the indemnity agreement contained in this Section **‎** 9
except to the extent it is materially prejudiced (through the forfeiture of substantive rights and defenses) as a result of such failure
and shall not relieve the indemnifying party from any liability that the indemnifying party may have to an indemnified party otherwise
than under the provisions of this Section **‎** 9. In case any such action is brought against any indemnified party and such
indemnified party seeks or intends to seek indemnity from an indemnifying party, the indemnifying party will be entitled to participate
in and, to the extent that it shall elect, jointly with all other indemnifying parties similarly notified, by written notice delivered
to the indemnified party promptly after receiving the aforesaid notice from such indemnified party, to assume the defense thereof with
counsel reasonably satisfactory to such indemnified party; *provided*, *however*, if the defendants in any such action include
both the indemnified party and the indemnifying party and the indemnified party shall have reasonably concluded that a conflict may arise
between the positions of the indemnifying party and the indemnified party in conducting the defense of any such action or that there
may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the
indemnifying party, the indemnified party or parties shall have the right to select separate counsel to assume such legal defenses and
to otherwise participate in the defense of such action on behalf of such indemnified party or parties (such counsel to be selected by
the Representatives in the case of Sections **‎** 9(a) and **‎** 9(e) hereof); *provided*, *further*,
that the Company and the Issuer shall, in connection with any one such action or separate but substantially similar or related actions
in the same jurisdiction arising out of the same general allegations or circumstances, be liable for the reasonable fees and expenses
of only one separate firm of attorneys (in addition to any local counsel) at any time for all such Underwriters and controlling persons,
which firm shall be selected by the Representatives. Upon receipt of notice from the indemnifying party to such indemnified party of
such indemnifying party's election so to assume the defense of such action and approval by the indemnified party of counsel, the
indemnifying party will not be liable to such indemnified party under this Section **‎** 9 for any legal or other expenses
subsequently incurred by such indemnified party in connection with the defense thereof unless (i) the indemnified party shall have
employed separate counsel in accordance with the proviso to the next preceding sentence (it being understood, however, that the indemnifying
party shall not be liable for the expenses of more than one separate counsel (together with local counsel (in each jurisdiction)) representing
the indemnified parties who are parties to such action) or (ii) the indemnifying party shall not have employed counsel satisfactory
to the indemnified party to represent the indemnified party within a reasonable time after notice of commencement of the action, in each
of which cases the fees and expenses of counsel shall be at the expense of the indemnifying party.

(d) *Settlements.* The indemnifying party under this Section **‎** 9
shall not be liable for any settlement of any proceeding effected without its written consent, which will not be unreasonably withheld,
but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party agrees to indemnify the indemnified
party against any loss, claim, damage, liability or expense by reason of such settlement or judgment. Notwithstanding the foregoing sentence,
if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses
of counsel as contemplated by this Section 9, the indemnifying party agrees that it shall be liable for any settlement of any proceeding
effected without its written consent if such settlement is entered into more than 60 days after receipt by such indemnifying party of
the aforesaid request, such indemnifying party shall have received notice of the terms of such settlement at least 30 days before such
settlement is entered into and such indemnifying party shall not have reimbursed the indemnified party in accordance with such request
prior to the date of such settlement. No indemnifying party shall, without the prior written consent of the indemnified party, effect
any settlement, compromise or consent to the entry of judgment in any pending or threatened action, suit or proceeding in respect of
which any indemnified party is or could have been a party and indemnity was or could have been sought hereunder by such indemnified party,
unless such settlement, compromise or consent (i) includes an unconditional release of such indemnified party from all liability
on claims that are the subject matter of such action, suit or proceeding and (ii) does not include any statements as to or any findings
of fault, culpability or failure to act by or on behalf of any indemnified party.

(e) *Contribution.* If the indemnification provided for in this
Section **‎** 9 is for any reason held to be unavailable to or otherwise insufficient to hold harmless an indemnified party
in respect of any losses, claims, damages, liabilities or expenses referred to therein, then each indemnifying party shall contribute
to the aggregate amount paid or payable by such indemnified party, as incurred, as a result of any losses, claims, damages, liabilities
or expenses referred to therein (i) in such proportion as is appropriate to reflect the relative benefits received by the Company
and the Issuer, on the one hand, and the Underwriters, on the other hand, from the offering of the Securities pursuant to this Agreement
or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate
to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company and the Issuer,
on the one hand, and the Underwriters, on the other hand, in connection with the statements or omissions which resulted in such losses,
claims, damages, liabilities or expenses, as well as any other relevant equitable considerations. The relative benefits received by the
Company and the Issuer, on the one hand, and the Underwriters, on the other hand, in connection with the offering of the Securities pursuant
to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Securities
pursuant to this Agreement (after deducting discounts and commissions to the Underwriters but before deducting expenses) received by
the Company and the Issuer bear to the total purchase discounts and commissions received by the Underwriters. The relative fault of the
Company and the Issuer, on the one hand, and the Underwriters, on the other hand, shall be determined by reference to, among other things,
whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates
to information supplied by the Company or the Issuer, on the one hand, or the Underwriters, on the other hand, and the parties'
relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission or inaccuracy.

The amount paid or payable by a party as a result of the losses, claims, damages, liabilities and expenses referred to above shall be deemed to include, subject to the limitations set forth in this Section ‎9, any legal or other fees or expenses reasonably incurred by such party in connection with investigating or defending any action or claim. The provisions set forth in this Section ‎9 with respect to notice of commencement of any action shall apply if a claim for contribution is to be made under this Section ‎9(e); *provided*, *however*, that no additional notice shall be required with respect to any action for which notice has been given under this Section ‎9 for purposes of indemnification.

The Company, the Issuer and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section ‎9(e) were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in this Section ‎9(e).

Notwithstanding the provisions of this Section ‎9(e), no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11 of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters' obligations to contribute pursuant to this Section ‎9(e) are several, and not joint, in proportion to their respective commitments as set forth opposite their names in <u>Schedule A</u>. For purposes of this Section ‎9(e), each director, officer, selling agent and employee of an Underwriter and each person, if any, who controls an Underwriter within the meaning of the Act and the Exchange Act shall have the same rights to contribution as such Underwriter, and each director and officer of the Company or the Issuer, and each person, if any, who controls the Company or the Issuer within the meaning of the Act and the Exchange Act, shall have the same rights to contribution as the Company and the Issuer.

10. *Termination of This Agreement.* Prior to the Closing Date,
this Agreement may be terminated by the Representatives by notice given to the Company and the Issuer if at any time: (i) trading
or quotation in any of the Company's or the Issuer's securities shall have been suspended or materially limited by the Commission,
(ii) trading in securities generally on either the NASDAQ Stock Market or the New York Stock Exchange shall have been suspended
or materially limited, or minimum or maximum prices shall have been generally established on any of such quotation system or stock exchange
by the Commission or FINRA; (iii) a general banking moratorium shall have been declared by any of federal or New York authorities;
(iv) there shall have occurred any outbreak or escalation of national or international hostilities or any crisis or calamity, or
any change in the United States or international financial markets, or any substantial change or development involving a prospective
substantial change in United States or international political, financial or economic conditions, as in the judgment of the Representatives
is material and adverse and makes it impracticable or inadvisable to proceed with the offering, sale or delivery of the Securities in
the manner and on the terms described in the General Disclosure Package or to enforce contracts for the sale of securities; (v) in
the judgment of the Representatives there shall have occurred any Material Adverse Change; or (vi) the Company or the Issuer shall
have sustained a loss by strike, fire, flood, earthquake, accident or other calamity of such character as in the judgment of the Representatives
may interfere materially with the conduct of the business and operations of the Company or the Issuer regardless of whether or not such
loss shall have been insured. Any termination pursuant to this Section **‎** 10 shall be without liability on the part of
(a) the Company or the Issuer to any Underwriter, except that the Company and the Issuer shall be obligated to reimburse the expenses
of the Underwriters pursuant to Sections **‎** 5(h) and **‎** 8 hereof, (b) any Underwriter to the Company
and the Issuer, or (c) any party hereto to any other party except that the provisions of Section **‎** 9 hereof shall
at all times be effective and shall survive such termination.

11. *Survival*. The respective indemnities, agreements, representations,
warranties and other statements of each of the Company and the Issuer and their respective officers and the several Underwriters set
forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf
of any Underwriter, the Company, the Issuer or any of their partners, officers or directors or any controlling person, as the case may
be, and will survive delivery of and payment for the Securities sold hereunder and any termination of this Agreement.

12. *Notices*. All communications hereunder shall be in writing
and shall be mailed, hand delivered, couriered, emailed or facsimiled and confirmed to the parties hereto as follows:

If to the Underwriters:

Citigroup Global Markets Inc.

388 Greenwich Street, New York NY 10013

Attention: General Counsel

Fax: 646-291-1469

Deutsche Bank Securities Inc.

1 Columbus Circle

New York, New York 10019

Attention: Debt Capital Markets Syndicate, with a copy to General Counsel,

(dbcapmarkets.gcnotices@list.db.com)

J.P. Morgan Securities LLC

270 Park Avenue

New York, New York 10179

Attention: Investment Grade Syndicate Desk

Facsimile: (212) 834-6081

with a copy to:

Davis Polk & Wardwell LLP<br> 450 Lexington Avenue<br> New York, New York 10017<br> Attention: Stephen A. Byeff

Facsimile: (212) 701-5715

If to the Company or the Issuer:

LyondellBasell Industries N.V.<br> 4<sup>th</sup> Floor, One Vine Street<br> London W1J OAH<br> United Kingdom

Attention: Treasury Operations US

Email: TreasuryOperationsUS@lyondellbasell.com

and

c/o LYB International Finance III, LLC

Lyondell Chemical Company<br> 2800 Post Oak Blvd<br> Suite 5100<br> Houston, Texas 77056<br> Attention: Treasury Operations US

with a copy to:

Gibson, Dunn & Crutcher LLP

811 Main Street, Suite 3000<br> Houston, Texas 77002<br> Attention: Hillary H. Holmes<br> E-mail: HHolmes@gibsondunn.com

Any party hereto may change the address, email or facsimile number for receipt of communications by giving written notice to the others.

13. *Successors*. This Agreement will inure to the benefit of
and be binding upon the parties hereto, and to the benefit of the indemnified parties referred to in Section **‎** 9 hereof,
and in each case their respective successors, and no other person will have any right or obligation hereunder. The term "successors"
shall not include any purchaser of the Securities as such from any of the Underwriters merely by reason of such purchase.

14. *Authority of the Representatives*. Any action by the Underwriters
hereunder may be taken by the Representatives, or any of them, on behalf of the Underwriters, and any such action taken by the Representatives,
or any of them, shall be binding upon the Underwriters.

15. *Partial Unenforceability.* The invalidity or unenforceability
of any section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other section, paragraph
or provision hereof. If any section, paragraph or provision of this Agreement is for any reason determined to be invalid or unenforceable,
there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable.

16. *Governing Law Provisions.* THIS AGREEMENT AND ANY CLAIM,
CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL
LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED IN SUCH STATE WITHOUT REGARD TO CONFLICTS OF LAW PRINCIPLES
THEREOF.

(a) *Consent to Jurisdiction.* Any legal suit, action or proceeding
arising out of or based upon this Agreement or the transactions contemplated hereby ()"**Related Proceedings**") may be
instituted in the competent federal courts of the United States of America located in the City and County of New York or the competent
courts of the State of New York in each case located in the City and County of New York (collectively, the "**Specified Courts** "),
and each party irrevocably submits to the exclusive jurisdiction (except for suits, actions, or proceedings instituted in regard to the
enforcement of a judgment of any Specified Court in a Related Proceeding (a "**Related Judgment**") as to which such jurisdiction
is non-exclusive) of the Specified Courts in any Related Proceeding. Service of any process, summons, notice or document by mail to such
party's address set forth above shall be effective service of process for any Related Proceeding brought in any Specified Court.
The parties irrevocably and unconditionally waive any objection to the laying of venue of any Related Proceeding in the Specified Courts
and irrevocably and unconditionally waive and agree not to plead or claim in any Specified Court that any Related Proceeding brought
in any Specified Court has been brought in an inconvenient forum. Service of process or other legal summons to the Company for purposes
of any Related Proceeding that may be instituted in any Specified Court shall be delivered to 2800 Post Oak Blvd, Suite 5100, Houston,
TX 77056 Attention: General Counsel (the "**Service Address** "). Service of any process, summons, notice or document sent
to the Service Address in any manner permitted by applicable law shall be effective service of process for any Related Proceeding brought
in any Specified Court. The parties hereto each hereby waive any right to trial by jury in any action, proceeding or counterclaim arising
out of or relating to this Agreement.

(b) *Waiver of Immunity.* With respect to any Related Proceeding,
each party irrevocably waives, to the fullest extent permitted by applicable law, all immunity (whether on the basis of sovereignty or
otherwise) from jurisdiction, service of process, attachment (both before and after judgment) and execution to which it might otherwise
be entitled in the Specified Courts, and with respect to any Related Judgment, each party waives any such immunity in the Specified Courts
or any other court of competent jurisdiction, and will not raise or claim or cause to be pleaded any such immunity at or in respect of
any such Related Proceeding or Related Judgment, including, without limitation, any immunity pursuant to the United States Foreign Sovereign
Immunities Act of 1976, as amended.

(c) *Judgment Currency.* If for the purposes of obtaining judgment
in any court it is necessary to convert a sum due hereunder into any currency other than U.S. dollars, the parties hereto agree, to the
fullest extent that they may effectively do so, that the rate of exchange used shall be the rate at which in accordance with normal banking
procedures the Underwriters could purchase U.S. dollars with such other currency in The City of New York on the business day preceding
that on which final judgment is given. The obligations of each of the Company and the Issuer in respect of any sum due from it to any
Underwriter shall, notwithstanding any judgment in any currency other than U.S. dollars, not be discharged until the first business day,
following receipt by such Underwriter of any sum adjudged to be so due in such other currency, on which (and only to the extent that)
such Underwriter may in accordance with normal banking procedures purchase U.S. dollars with such other currency; if the U.S. dollars
so purchased are less than the sum originally due to such Underwriter hereunder, each of the Company and the Issuer agrees, as a separate
obligation and notwithstanding any such judgment, to indemnify such Underwriter against such loss. If the U.S. dollars so purchased are
greater than the sum originally due to such Underwriter hereunder, such Underwriter agrees to pay to the Company or the Issuer, as the
case may be (but without duplication), an amount equal to the excess of the U.S. dollars so purchased over the sum originally due to
such Underwriter hereunder.

17. *Default of Underwriters*. If any Underwriter or Underwriters
default in their obligations to purchase Securities hereunder on the Closing Date, and the aggregate principal amount of Securities that
such defaulting Underwriter or Underwriters agreed but failed to purchase does not exceed 10% of the aggregate principal amount of Notes
that the Underwriters are obligated to purchase on the Closing Date, the Representatives may make arrangements satisfactory to the Company
for the purchase of such Securities by other persons, including any of the Underwriters, but if no such arrangements are made by the
Closing Date, the non-defaulting Underwriters shall be obligated severally, in proportion to their respective commitments hereunder,
to purchase the Securities that such defaulting Underwriters agreed but failed to purchase on the Closing Date. If any Underwriter or
Underwriters so default and the principal amount of Securities with respect to which such default or defaults occur exceeds 10% of the
aggregate principal amount of Securities that the Underwriters are obligated to purchase on the Closing Date and arrangements satisfactory
to the Representatives, the Company and the Issuer for the purchase of such Securities by other persons are not made within 36 hours
after such default, this Agreement will terminate without liability on the part of any non-defaulting Underwriter, the Company or the
Issuer, except as provided in Section **‎** 11. As used in this Agreement, the term "Underwriter" includes any
person substituted for an Underwriter under this Section **‎** 17. Nothing herein will relieve a defaulting Underwriter from
liability for its default.

18. *No Advisory or Fiduciary Responsibility.* Each of the Company
and the Issuer acknowledges and agrees that: (i) the purchase and sale of the Securities pursuant to this Agreement, including the
determination of the offering price of the Securities and any related discounts and commissions, is an arm's-length commercial
transaction among the Company, the Issuer and the several Underwriters, and each of the Company and the Issuer is capable of evaluating
and understanding and understands and accepts the terms, risks and conditions of the transactions contemplated by this Agreement; (ii) in
connection with each transaction contemplated hereby and the process leading to such transaction each Underwriter is and has been acting
solely as a principal and is not the agent or fiduciary of the Company or the Issuer or any of their respective affiliates, shareholders,
creditors or employees or any other party; (iii) no Underwriter has assumed or will assume an advisory or fiduciary responsibility
in favor of the Company or the Issuer with respect to any of the transactions contemplated hereby or the process leading thereto (irrespective
of whether such Underwriter has advised or is currently advising the Company or the Issuer on other matters) or any other obligation
to the Company or the Issuer except the obligations expressly set forth in this Agreement; (iv) the several Underwriters and their
respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company and
the Issuer and that the several Underwriters have no obligation to disclose any of such interests by virtue of any fiduciary or advisory
relationship; and (v) the Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the offering
contemplated hereby and each of the Company and the Issuer has consulted its own legal, accounting, regulatory and tax advisors to the
extent it deemed appropriate.

19. *Taxes.* All payments to be made by the Company under this
Agreement shall be paid free and clear of and without deduction or withholding for or on account of, any present or future taxes, levies
or imposts by The Netherlands or the United Kingdom or by any department, agency or other political subdivision or taxing authority thereof
or therein, and all interest, penalties or similar liabilities with respect thereto (collectively, "**Taxes** "), save
to the extent required by law. If any Taxes are required by law to be deducted or withheld in connection with such payments, the Company
will increase the amount paid so that the full amount of such payment is received by the Underwriters, provided always that such an increase
will not be made on account of any income, franchise or other similar tax in lieu thereof on the overall net income of the payee that
would not have been imposed but for the existence of any present or former connection between the payee and the jurisdiction imposing
such tax other than any such connection arising as a result of the transactions contemplated under the Transaction Documents. All fees
and amounts payable by the Company to the Underwriters under this Agreement are exclusive of any value added tax or any similar taxes
(" **VAT** "). If the transactions described in this Agreement are subject to VAT, and the Underwriters (or any person with
which any Underwriter is grouped for VAT purposes) are required to account to a tax authority for that VAT, the Company will, upon receipt
of a valid VAT invoice, pay the Underwriters the applicable VAT. If the transactions described in this Agreement are subject to VAT and
the Company (or any person with which the Company is grouped for VAT purposes), as the case may be, is required to account to a tax authority
for that VAT under the reverse charge procedure, the Company shall account directly for such VAT.

20. *Recognition of the U.S. Special Resolution Regimes.* 

(a) In the event that any Underwriter that is a Covered Entity becomes
subject to a proceeding under a U.S. Special Resolution Regime, the transfer from such Underwriter of this Agreement, and any interest
and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special
Resolution Regime, if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state
of the United States;

(b) In the event that any Underwriter that is a Covered Entity or
a BHC Act Affiliate of such Underwriter becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights under
this Agreement that may be exercised against such Underwriter are permitted to be exercised to no greater extent than such Default Rights
could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state
of the United States.

(c) For the purposes of this Section 20, the following definitions
apply:

(i) "**BHC Act Affiliate**" has the meaning assigned
to the term "affiliate" in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k).

(ii) "**Covered Entity**" means any of the following:

(A) a "covered entity" as that term is defined in, and
interpreted in accordance with, 12 C.F.R. § 252.82(b);

(B) a "covered bank" as that term is defined in, and interpreted
in accordance with, 12 C.F.R. § 47.3(b); or

(C) a "covered FSI" as that term is defined in, and interpreted
in accordance with, 12 C.F.R. § 382.2(b).

(iii) "**Default Right**" has the meaning assigned to
that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable.

(iv) "**U.S. Special Resolution Regime**" means each
of (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (ii) Title II of the Dodd-Frank Wall
Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

21. *UK Bail-In*. Notwithstanding and to the exclusion of any
other term of this Agreement or any other agreements, arrangements, or understanding between the Underwriters (each a "UK Bail-in
Party"), the Issuer and the Company, the Issuer and the Company (each a "Counterparty") each acknowledge and accept
that a UK Bail-in Liability arising under this Agreement may be subject to the exercise of UK Bail-in Powers by the relevant UK resolution
authority, and acknowledge, accept, and agree to be bound by:

(a) the effect of the exercise of UK Bail-in Powers by the relevant
UK resolution authority in relation to any UK Bail-in Liability of a UK Bail-In Party (the "Relevant UK Bail-in Party") to
a Counterparty (the "Relevant Counterparty") under this Agreement, that (without limitation) may include and result in any
of the following, or some combination thereof:

(i) the reduction of all, or a portion, of the UK Bail-in Liability
or outstanding amounts due thereon;

(ii) the conversion of all, or a portion, of the UK Bail-in Liability
into shares, other securities or other obligations of the Relevant UK Bail-in Party or another person, and the issue to or conferral
on the Relevant Counterparty of such shares, securities or obligations;

(iii) the cancellation of the UK Bail-in Liability;

(iv) the amendment or alteration of any interest, if applicable, thereon,
the maturity or the dates on which any payments are due, including by suspending payment for a temporary period;

(b) the variation of the terms of this Agreement, as deemed necessary
by the relevant UK resolution authority, to give effect to the exercise of UK Bail-in Powers by the relevant UK resolution authority.

(c) For the purposes of this Section 21, the following definitions
apply:

(i) "UK Bail-in Legislation" means Part I of the
UK Banking Act 2009 and any other law or regulation applicable in the UK relating to the resolution of unsound or failing banks, investment
firms or other financial institutions or their affiliates (otherwise than through liquidation, administration or other insolvency proceedings).

(ii) "UK Bail-in Liability" means a liability in respect
of which the UK Bail-in Powers may be exercised.

(iii) "UK Bail-in Powers" means the powers under the UK
Bail-In Legislation to cancel, transfer or dilute shares issued by a person that is a bank or investment firm or affiliate of a bank
or investment firm, to cancel, reduce, modify or change the form of a liability of such a person or any contract or instrument under
which that liability arises, to convert all or part of that liability into shares, securities or obligations of that person or any other
person, to provide that any such contract or instrument is to have effect as if a right had been exercised under it or to suspend any
obligation in respect of that liability.

22. *General Provisions.* This Agreement constitutes the entire
agreement of the parties to this Agreement and supersedes all prior written or oral and all contemporaneous oral agreements, understandings
and negotiations with respect to the subject matter hereof. This Agreement may be executed in two or more counterparts, each one of which
shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. The parties agree to
electronic contracting and signatures with respect to this Agreement. Delivery of an electronic signature to, or a signed copy of, this
Agreement by facsimile, email or other electronic transmission (i.e., a "pdf" or "tif") shall be fully binding
on the parties to the same extent as the delivery of the signed originals and shall be admissible into evidence for all purposes. The
words "execution," "execute," "signed," "signature," and words of like import in or related
to any document to be signed in connection with this Agreement shall be deemed to include electronic signatures, the electronic matching
of assignment terms and contract formations on electronic platforms approved by the Company, or the keeping of records in electronic
form, each of which shall be of the same legal effect, validity or enforceability as a manually executed signature or the use of a paper-based
recordkeeping system, as the case may be, to the extent and as provided for in any applicable law, including the Federal Electronic Signatures
in Global and National Commerce Act, the New York State Electronic Signatures and Records Act, or any other similar state laws based
on the Uniform Electronic Transactions Act. This Agreement may not be amended or modified unless in writing by all of the parties hereto,
and no condition herein (express or implied) may be waived unless waived in writing by each party whom the condition is meant to benefit.
The section headings herein are for the convenience of the parties only and shall not affect the construction or interpretation of this
Agreement.

Each of the Company and the Issuer hereby waives and releases, to the fullest extent permitted by law, any claims that the Company or the Issuer may have against the several Underwriters with respect to any breach or alleged breach of fiduciary duty with respect to transactions contemplated by this Agreement.

[*Signature Pages Follow*]

If the foregoing is in accordance with your understanding of our agreement, kindly sign and return to the Company and the Issuer the enclosed copies hereof, whereupon this instrument, along with all counterparts hereof, shall become a binding agreement in accordance with its terms.

---

| | |
|:---|:---|
| Very truly yours, | Very truly yours, |
| LYONDELLBASELL INDUSTRIES N.V. | LYONDELLBASELL INDUSTRIES N.V. |
| By: | /s/ Brendan J. Dalton |
| Name: | Brendan J. Dalton |
| Title: | Authorized Person |
| LYB INTERNATIONAL FINANCE III, LLC | LYB INTERNATIONAL FINANCE III, LLC |
| By: | /s/ Brendan J. Dalton |
| Name: | Brendan J. Dalton |
| Title: | Treasurer |

---

[Signature Page to Underwriting Agreement]

The foregoing Underwriting Agreement is hereby confirmed and accepted by the Underwriters as of the date first above written.

---

| | |
|:---|:---|
| CITIGROUP GLOBAL MARKETS INC. | CITIGROUP GLOBAL MARKETS INC. |
| By: | /s/ Adam D. Bordner |
|  | Name: Adam D. Bordner |
|  | Title: Managing Director |

---

[Signature Page to Underwriting Agreement]

The foregoing Underwriting Agreement is hereby confirmed and accepted by the Underwriters as of the date first above written.

---

| | |
|:---|:---|
| DEUTSCHE BANK SECURITIES INC. | DEUTSCHE BANK SECURITIES INC. |
| By: | /s/ Thomas Short |
|  | Name: Thomas Short |
|  | Title: Managing Director / Debt Syndicate Deutsche Bank Securities Inc. |
| By: | /s/ Brendan Murphy |
|  | Name: Brendan Murphy |
|  | Title: Managing Director / Debt Syndicate Deutsche Bank Securities Inc. |

---

The foregoing Underwriting Agreement is hereby confirmed and accepted by the Underwriters as of the date first above written.

---

| | |
|:---|:---|
| J.P. MORGAN SECURITIES LLC | J.P. MORGAN SECURITIES LLC |
| By: | /s/ Som Bhattacharyya |
|  | Name: Som Bhattacharyya |
|  | Title: Executive Director |

---

[Signature Page to Underwriting Agreement]

**<u>SCHEDULE A</u>**

---

| | | |
|:---|:---|:---|
| **Underwriter** | **Aggregate<br> Principal<br> Amount of**<br>**2031 Notes** | **Aggregate<br> Principal<br> Amount of**<br>**2036 Notes** |
| Citigroup Global Markets Inc. | $66666000 | $133334000 |
| Deutsche Bank Securities Inc. | $66666000 | $133334000 |
| J.P. Morgan Securities LLC | $66666000 | $133334000 |
| BofA Securities, Inc. | $25000000 | $50000000 |
| Mizuho Securities USA LLC | $25000000 | $50000000 |
| Morgan Stanley & Co. LLC | $25000000 | $50000000 |
| Wells Fargo Securities, LLC | $25000000 | $50000000 |
| Barclays Capital Inc. | $16667000 | $33333000 |
| BNP Paribas Securities Corp. | $16667000 | $33333000 |
| ING Financial Markets LLC | $16667000 | $33333000 |
| MUFG Securities Americas Inc. | $16667000 | $33333000 |
| SMBC Nikko Securities America, Inc. | $16667000 | $33333000 |
| UniCredit Capital Markets LLC | $16667000 | $33333000 |
| Academy Securities, Inc. | $15000000 | $30000000 |
| Scotia Capital (USA) Inc. | $10000000 | $20000000 |
| Goldman Sachs & Co. LLC | $10000000 | $20000000 |
| PNC Capital Markets LLC | $10000000 | $20000000 |
| Santander US Capital Markets LLC | $10000000 | $20000000 |
| Standard Chartered Bank | $10000000 | $20000000 |
| TD Securities (USA) LLC | $10000000 | $20000000 |
| Truist Securities, Inc. | $10000000 | $20000000 |
| BNY Mellon Capital Markets, LLC | $7500000 | $15000000 |
| Loop Capital Markets LLC | $7500000 | $15000000 |
| **Total** | $500000000 | $1000000000 |

---

Schedule A

**<u>SCHEDULE B</u>**

**1.** **General Use Free Writing Prospectuses (included in the General Disclosure Package)** 

"General Use Issuer Free Writing Prospectus" includes each of the following documents:

Pricing Term Sheet dated November 10, 2025.

**2.** **Other Information Included in the General Disclosure Package** 

None.

Schedule B

**<u>SCHEDULE C-1</u>**

**Form of Opinion of De Brauw Blackstone Westbroek N.V.**

**Dutch Counsel to the Guarantor and the Issuer**

(a) The Guarantor has been incorporated and exists as a public limited liability company (*naamloze vennootschap*).

(b) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Guarantor has the corporate power to enter into and perform the Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) The Guarantor has taken all necessary corporate action to authorise its entry into and performance of
the Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) The Guarantor has validly signed the Agreements and the Officer's Certificate.

(c) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Guarantor does not require any governmental licence, dispensation, recognition or other consent for
its entry into and performance of the Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) There are no governmental registration, filing or similar formalities required to ensure the validity
and binding effect on and enforceability against the Guarantor of the Agreements.

(d) The Guarantor's entry into and performance of the Agreements do not violate Dutch law or its articles
of association.

(e) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The choice of New York Law as the governing law of each Agreement and the Notes is recognised.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Dutch law does not restrict the validity and binding effect on and enforceability against the Guarantor
of the Agreements.

(f) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The validity and binding effect on and enforceability against the Guarantor of the submission to the jurisdiction
of the New York Court in the Agreements and:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) under Dutch private international law are likely governed by New York Law; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) are not restricted by Dutch law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) A judgment in a civil or commercial matter rendered by a New York Court cannot be enforced in the Netherlands.
However, if a person has obtained a final judgment without appeal in such a matter rendered by a New York Court which is enforceable in
the State of New York and files his claim with a Dutch court with jurisdiction, the Dutch court will generally recognise and give effect
to the judgment insofar as it finds that (A) the jurisdiction of the court has been based on an internationally generally accepted
ground, (B) proper legal procedures have been observed, (C) the judgment does not contravene Dutch public policy, and (D) the
judgment is not irreconcilable with a judgment of a Dutch court or an earlier judgment of a foreign court that is capable of being recognised
in the Netherlands.

Schedule C-1

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) The Guarantor is not entitled to immunity from legal proceedings nor are its assets immune from execution.

(g) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) No Dutch Taxes must be withheld by the Guarantor from any amount realized or deemed realized by the Counterparty
under the Agreements except potentially, if the Guarantor and the Counterparty are Related.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) No Dutch Taxes of a documentary nature, such as capital tax or stamp or registration tax or duty, are
payable by any Underwriter or the Trustee solely as a result of its entry into, performance or enforcement of the Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) The Underwriters or the Trustee will not become or be deemed resident in the Netherlands for the purpose
of, or become subject to, Dutch Taxes solely as a result of its entry into, performance or enforcement of any Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) The statements in the Prospectus Supplement under the heading "Material Dutch Tax Considerations,"
to the extent that they are statements as to Dutch Tax law, are correct.

Schedule C-1

**<u>SCHEDULE C-2</u>**

**Form of Opinion of Gibson, Dunn & Crutcher LLP**

**U.S. Counsel and U.S. Tax Counsel to the Company**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The Company is a validly existing limited liability company in good standing under the laws of the State of Delaware.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. The Company has all requisite limited liability company power to execute and deliver the Note Documents and to perform its obligations thereunder.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. The execution and delivery by the Company of the Note Documents and the performance of its obligations thereunder have been duly authorized by all necessary limited liability company action. Each of the Note Documents (other than the Notes) has been duly executed and delivered by the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The Indenture constitutes a legal, valid and binding obligation of the Company and the Guarantor**,** enforceable against the Company and the Guarantor in accordance with its terms.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The Notes, when executed and authenticated in accordance with the provisions of the Indenture and delivered to and paid for by the Underwriters in accordance with the terms of the Underwriting Agreement, will be legal, valid and binding obligations of the Company, enforceable against the Company in accordance with their terms.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6. When the Notes have been duly executed and authenticated in accordance with the provisions of the Indenture and delivered to and paid for by the Underwriters in accordance with the terms of the Underwriting Agreement, the Guarantee set forth in the Indenture will be a legal, valid and binding obligation of the Guarantor, enforceable against the Guarantor in accordance with its terms.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7. The execution and delivery by each of the Company and the Guarantor of the Note Documents to which it is a party, the performance of its obligations thereunder, and the issuance by the Company and the Guarantor of the Notes and the Guarantee to the Underwriters pursuant to the Underwriting Agreement:

&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;(i) do not and will not violate the certificate of formation or limited liability company agreement of the Company;

&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;(ii) do not and will not, based solely upon review of such agreements, result in a breach of or default under the agreements listed on **<u>Annex A</u>** by the Company or the Guarantor; 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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) do not and will not (A) violate, or require any filing with or approval of any governmental authority or regulatory body of the State of New York or the United States of America under, any law, rule or regulation of the State of New York or the United States of America applicable to the Company that, in our experience, is generally applicable to transactions in the nature of those contemplated by the Underwriting Agreement, (B) violate, or require any filing with or approval of any governmental authority or regulatory body of the State of Delaware under, the Delaware Limited Liability Company Act or (C) require any filing with or approval of any governmental authority or regulatory body of the United States of America under the Securities Act or the Trust Indenture Act of 1939, as amended (the "<u>Trust Indenture Act</u>"), except for such filings or approvals as already have been made or obtained.

Schedule C-2

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8. Insofar as the statements in the General Disclosure Package and the Prospectus under the captions "Description of Debt Securities" and "Description of the Notes" purport to describe specific provisions of the Notes or the other Specified Note Documents, such statements present in all material respects an accurate summary of such provisions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9. To the extent that the statements in the General Disclosure Package and the Prospectus under the caption "Tax Consequences—Material U.S. Federal Income Tax Considerations" purport to describe specific provisions of the Internal Revenue Code of 1986, as amended, or the rules and regulations thereunder, such statements present in all material respects an accurate summary of such provisions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10. The Company is not and, after giving effect to the sale of the Notes and the use of proceeds therefrom as described in the General Disclosure Package and the Prospectus, will not be an "investment company" that is required to be registered under the Investment Company Act of 1940, as amended (the "<u>Investment Company Act</u>"). For purposes of this paragraph 10, the term "investment company" has the meanings ascribed to such term in the Investment Company Act.

Schedule C-2

**<u>SCHEDULE C-3</u>**

**Form of Negative Assurance Letter of Gibson, Dunn & Crutcher LLP**

**U.S. Counsel and U.S. Tax Counsel to the Company**

Based solely on the representations and warranties of the Company contained in the Underwriting Agreement as to factual matters, we are of the view that the Registration Statement is effective under the Securities Act and that the Indenture has been duly qualified under the Trust Indenture Act of 1939, as amended. To our knowledge, based solely upon our review of the list of stop orders contained on the Commission's website at http://www.sec.gov/litigation/stoporders.shtml at 8:00 a.m., Eastern time, on November 13, 2025, as of the time of such confirmation no stop order suspending the effectiveness of the Registration Statement has been issued under the Securities Act, and no proceedings for that purpose have been instituted or are pending or threatened by the Commission.

We have participated in conferences with officers and other representatives of the Company, representatives of the independent auditors of the Company and your representatives and counsel at which the contents of the Registration Statement, the General Disclosure Package and the Prospectus and related matters were discussed. Because the purpose of our professional engagement was not to establish or confirm factual matters and because we did not independently undertake to verify the accuracy, completeness or fairness of the statements set forth in the Registration Statement, the General Disclosure Package or the Prospectus, we are not passing upon and do not assume any responsibility for the accuracy, completeness or fairness of the statements contained in the Registration Statement, the General Disclosure Package or the Prospectus except insofar as such statements specifically relate to us or as specifically addressed in paragraphs 8 and 9 of our legal opinion addressed to you of even date herewith. Our identification of information as constituting the General Disclosure Package is for the limited purpose of making the statements set forth in this letter. We express no opinion or belief as to the conveyance of the General Disclosure Package or the Prospectus or the information contained therein to investors generally or to any particular investors at any particular time or in any particular manner.

On the basis of the foregoing, and except for (1) the financial statements and schedules and other information of an accounting or financial nature included or incorporated by reference therein and (2) the Statement of Eligibility on Form T-1 of the Trustee, as to all of which we express no opinion or belief, no facts have come to our attention that led us to believe: (a) that the Registration Statement, at the time it became effective, or the Prospectus, as of the date of the Final Prospectus Supplement, were not appropriately responsive in all material respects to the requirements of the Securities Act and the Trust Indenture Act and the applicable rules and regulations of the Commission thereunder; or (b)(i) that the Registration Statement, at the time it became effective, contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (ii) that the General Disclosure Package, at the Applicable Time, included an untrue statement of a material fact or omitted to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, or (iii) that the Prospectus, as of its date or as of the date hereof, included or includes an untrue statement of a material fact or omitted or omits to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

Schedule C-3

**<u>SCHEDULE C-4</u>**

**Form of LyondellBasell In-House Opinion**

Each of the Significant Subsidiaries organized under the laws of a U.S. jurisdiction is validly existing under the laws of its jurisdiction of organization, with power and authority (corporate, limited liability company or limited partnership) under such laws to own its properties and conduct its business as described in the General Disclosure Package, the Final Prospectus and the documents incorporated by reference in each of them, and has been duly qualified for the transaction of business and is in good standing under the laws of each jurisdiction in which it owns or leases properties, or conducts any business, so as to require such qualification, other than where the failure to be so qualified or in good standing would not result in a Material Adverse Change; and all the outstanding shares of capital stock or other ownership interests of each such Significant Subsidiary have been duly authorized and validly issued, are fully paid and non-assessable, and (except (i) any Liens permitted under the indentures, as amended or supplemented, dated as of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) July 16, 2013, relating to the 5.250% Guaranteed Notes due 2043 and 4.875% Guaranteed Notes due 2044
issued by LYB International Finance B.V. and guaranteed by the Company;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) March 5, 2015, relating to the Company's 4.625% Senior Notes due 2055;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) March 2, 2016, relating to the 3.500% Guaranteed Notes due 2027, 0.875% Guaranteed Notes due 2026,
and 1.625% Guaranteed Notes due 2031 issued by LYB International Finance II B.V. and guaranteed by the Company; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) October 10, 2019, relating to the 4.200% Guaranteed Notes due 2049, 3.375% Guaranteed Notes due 2030,
4.200% Guaranteed Notes due 2050, 2.250% Guaranteed Notes due 2030, 3.375% Guaranteed Notes due 2040, 3.625% Guaranteed Notes due 2051,
3.800% Guaranteed Notes due 2060, 5.625% Guaranteed Notes due 2033, 5.500% Guaranteed Notes due 2034 and 6.150% Guaranteed Notes due 2035
issued by the Issuer and guaranteed by the Company; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) as otherwise set forth in the General Disclosure Package, the Final Prospectus and the documents incorporated by reference in each of them) are owned, directly or indirectly by the Company, free and clear of all consensual liens, encumbrances, equities and similar claims.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Other than as set forth or contemplated in the General Disclosure Package, the Final Prospectus and the documents incorporated by reference in each of them, to the best of my knowledge, there are no legal or governmental investigations, actions, suits or proceedings pending or threatened against the Company or any of its subsidiaries or any of their respective properties or to which the Company or any of its subsidiaries is or may be a party or to which any property of the Company or its subsidiaries is or may be the subject which, if determined adversely to the Company or its subsidiaries, could individually or in the aggregate reasonably be expected to result in a Material Adverse Change.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Except as disclosed in the General Disclosure Package and the Final Prospectus, to the best of my knowledge, there are no persons with registration or other similar rights to have any equity or debt securities registered for sale under the Registration Statement or included in the offering contemplated by the Underwriting Agreement, except for such rights as have been duly waived.

Schedule C-4

**<u>SCHEDULE C-5</u>**

**Form of Opinion of Gibson, Dunn & Crutcher LLP**

**U.K. Tax Counsel to the Company**

Subject to the assumptions contained in paragraph 3 of this opinion, the other matters set out in this opinion, and the qualification contained in paragraph 5 of this opinion, we are of the opinion that, as at today's date, the summary in the Prospectus under the heading "*Tax Consequences—Material U.K. Tax Considerations*," insofar as it summarises the provisions of certain tax laws of the United Kingdom and subject to any assumptions, limitations or qualifications contained therein, constitutes a fair and accurate summary in all material respects.

Schedule C-5

**<u>Exhibit A</u>**

**Issuer Free Writing Prospectus, dated November 10, 2025**

**Filed Pursuant to Rule 433 under the Securities Act of 1933**

**Registration No. 333-283755**

**LYB International Finance III, LLC**

**$500,000,000 5.125% Guaranteed Notes due 2031**

**$1,000,000,000 5.875% Guaranteed Notes due 2036**

**<u>Pricing Term Sheet dated November 10, 2025</u>**

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Issuer:** | &nbsp;&nbsp;LYB International Finance III, LLC |
| &nbsp;&nbsp;**Parent Guarantor:** | &nbsp;&nbsp;LyondellBasell Industries N.V. |
| &nbsp;&nbsp;**Security Description:** | &nbsp;&nbsp; $500,000,000 5.125% Guaranteed Notes due 2031 (the "2031 Notes")<br> $1,000,000,000 5.875% Guaranteed Notes due 2036 (the "2036 Notes" and, together with the 2031 Notes, the "Notes") |
| &nbsp;&nbsp;**Distribution:** | &nbsp;&nbsp;SEC-registered |
| &nbsp;&nbsp;**Principal Amount:** | &nbsp;&nbsp; 2031 Notes: $500,000,000<br> 2036 Notes: $1,000,000,000 |
| &nbsp;&nbsp;**Coupon:** | &nbsp;&nbsp; 2031 Notes: 5.125%<br> 2036 Notes: 5.875% |
| &nbsp;&nbsp;**Public Offering Price:** | &nbsp;&nbsp; 2031 Notes: 99.806% of the principal amount<br> 2036 Notes: 99.279% of the principal amount |
| &nbsp;&nbsp;**Yield to Maturity:** | &nbsp;&nbsp; 2031 Notes: 5.165%<br> 2036 Notes: 5.968% |
| &nbsp;&nbsp;**Benchmark:** | &nbsp;&nbsp; 2031 Notes: UST 3.625% due October 31, 2030<br> 2036 Notes: UST 4.250% due August 15, 2035 |

---

Exhibit A-1

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Spread to Benchmark:** | &nbsp;&nbsp; 2031 Notes: +145 basis points<br> 2036 Notes: +185 basis points |
| &nbsp;&nbsp;**Benchmark Treasury Price / Yield:** | &nbsp;&nbsp; 2031 Notes: 99-19 / 3.715%<br> 2036 Notes: 101-01+ / 4.118% |
| &nbsp;&nbsp;**Trade Date:** | &nbsp;&nbsp;November 10, 2025 |
| &nbsp;&nbsp;**Settlement Date\*:** | &nbsp;&nbsp;November 13, 2025 (T+2) |
| &nbsp;&nbsp;**Maturity Date:** | &nbsp;&nbsp; 2031 Notes: January 15, 2031<br> 2036 Notes: January 15, 2036 |
| &nbsp;&nbsp;**Record Date:** | &nbsp;&nbsp;January 1 and July 1 of each year |
| &nbsp;&nbsp;**Interest Payment Dates:** | &nbsp;&nbsp;January 15 and July 15 of each year |
| &nbsp;&nbsp;**First Interest Payment Date:** | &nbsp;&nbsp;July 15, 2026 |
| &nbsp;&nbsp;**Optional Redemption:** |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Make-Whole Call:** | &nbsp;&nbsp; 2031 Notes: T+25 basis points (at any time before December 15, 2030)<br> 2036 Notes: T+30 basis points (at any time before October 15, 2035) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Par Call:** | &nbsp;&nbsp; 2031 Notes: At any time on or after December 15, 2030<br> 2036 Notes: At any time on or after October 15, 2035 |
| &nbsp;&nbsp;**Change of Control Triggering Event:** | &nbsp;&nbsp;Puttable at 101% of principal plus accrued and unpaid interest, if any |
| &nbsp;&nbsp;**Denominations/Multiple:** | &nbsp;&nbsp;$2,000 / $1,000 |
| &nbsp;&nbsp;**CUSIP / ISIN:** | &nbsp;&nbsp; 2031 Notes: 50249A AQ6/ US50249AAQ67<br> 2036 Notes: 50249A AR4/ US50249AAR41 |

---

---

| | |
|:---|:---|
| &nbsp;&nbsp; **Joint Book-Running Managers:**<br>| &nbsp;&nbsp; Citigroup Global Markets Inc.<br> Deutsche Bank Securities Inc.<br> J.P. Morgan Securities LLC<br> BofA Securities, Inc.<br> Mizuho Securities USA LLC<br> Morgan Stanley & Co. LLC<br> Wells Fargo Securities, LLC<br>|

---

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Co-Managers:** | &nbsp;&nbsp; Barclays Capital Inc.<br> BNP Paribas Securities Corp.<br> ING Financial Markets LLC<br> MUFG Securities Americas Inc.<br> SMBC Nikko Securities America, Inc.<br> UniCredit Capital Markets LLC<br> Academy Securities, Inc.<br> Scotia Capital (USA) Inc.<br> Goldman Sachs & Co. LLC<br> PNC Capital Markets LLC<br> Santander US Capital Markets LLC<br> Standard Chartered Bank<br> TD Securities (USA) LLC<br> Truist Securities, Inc.<br> BNY Mellon Capital Markets, LLC<br> Loop Capital Markets LLC |

---

Exhibit A-2

_____________________________________________

**\*Note: It is expected that delivery of the Notes will be made against payment therefor on or about November 13, 2025, which will be the second business day following the date of the pricing of the Notes (such settlement cycle being referred to as "T+2"). Under Rule 15c6-1 under the Securities Exchange Act of 1934, as amended, trades in the secondary market are generally required to settle in one business day, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the Notes prior to the business day preceding the date of delivery of the Notes will be required, by virtue of the fact that the Notes will initially settle in T+2, to specify an alternate settlement arrangement at the time of any such trade to prevent a failed settlement. Purchasers of the Notes who wish to trade the Notes prior to the business day preceding the date of delivery of the Notes should consult their own advisors.**

**The issuer has filed a registration statement (including a prospectus) and a preliminary prospectus supplement with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement, the preliminary prospectus supplement and other documents the issuer has filed with the SEC that are incorporated into the prospectus supplement for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and the related prospectus supplement if you request it by calling Citigroup Global Markets Inc. at 1-800-831-9146, Deutsche Bank Securities Inc. at 1-800-503-4611 or J.P. Morgan Securities LLC at 1-212-834-4533.**

***Any disclaimer or other notice that may appear below is not applicable to this communication and should be disregarded. Such disclaimer or notice was automatically generated as a result of this communication being sent by Bloomberg or another email system.***

Exhibit A-3

## Exhibit 4.3

**Exhibit 4.3**

**LYB INTERNATIONAL FINANCE III, LLC**

**<u>Officer's Certificate</u>**

November 13, 2025

Reference is made to the Indenture, dated as of October 10, 2019 among LYB International Finance III, LLC, as issuer (the "**Company**"), LyondellBasell Industries N.V., as guarantor (the "**Guarantor**"), and Wells Fargo Bank, National Association, as trustee (the "**Base Indenture**"), as supplemented by the First Supplemental Indenture dated as of May 17, 2023 among the Company, the Guarantor, Computershare Trust Company, N.A., as base trustee (as successor-in-interest to Wells Fargo Bank, National Association), and The Bank of New York Mellon Trust Company, N.A., as trustee (the "**Trustee**") (as so supplemented and modified, the "**Indenture**"). The Trustee is the trustee for the Notes issued under the Indenture. Pursuant to Section 2.01 of the Indenture, the undersigned officer does hereby certify, in connection with the issuance of $500,000,000 aggregate principal amount of 5.125% Guaranteed Notes due 2031 (the "**2031 Notes**") and $1,000,000,000 aggregate principal amount of 5.875% Guaranteed Notes due 2036 (the "**2036 Notes**" and, together with the 2031 Notes, the "**Notes**") that the terms of the Notes are as follows:

Capitalized terms used but not otherwise defined herein shall have the meanings specified in the Indenture or in the form of Notes attached hereto as <u>Exhibit A</u> and <u>Exhibit B</u>, as applicable.

***2031 Notes***

---

| | |
|:---|:---|
| *Title:* | 5.125% Guaranteed Notes due 2031 |
| *Issuer:* | LYB International Finance III, LLC |
| *Form:* | The 2031 Notes shall be issued in permanent global form |
| *Guarantor:* | LyondellBasell Industries N.V. |
| *Trustee, Registrar, Transfer* <br> *Agent, Authenticating<br> Agent, and Paying Agent:* | The Bank of New York Mellon Trust Company, N.A. |
| *Aggregate Principal Amount at Maturity:* | $500000000 |
| *Principal Payment Date:* | January 15, 2031 |
| *Interest:* | 5.125% per annum |
| *Date from which Interest will Accrue:* | November 13, 2025 |

---

---

| | |
|:---|:---|
| *Interest Payment Dates:* | Semi-annually on January 15 and July 15, commencing on July 15, 2026 |
| *Record Dates:* | January 1 and July 1 immediately preceding the related interest payment date |
| *Places of Payment:* | The Trustee at its Corporate Trust Office in Houston set forth in Section 2.03 of the First Supplemental Indenture dated May 17, 2023. |
| *Optional Redemption:* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Prior to the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to the greater of:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 25 basis points less (b) interest accrued to, but excluding, the Redemption Date; and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) 100% of the principal amount of the Notes to be redeemed;<br>plus, in either case, accrued and unpaid interest thereon to, but excluding, the redemption date.<br>On or after the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest on the Notes to be redeemed to, but excluding, the date of redemption.<br>The Notes are also redeemable upon certain tax events as set forth in the Notes and Section 3.12 of the Indenture. |
| *Conversion:* |  |
| *Sinking Fund:* |  |
| *Redemption at the Option of the Holder:* | Upon a Change of Control Triggering Event as set forth in the Notes |

---

---

| | |
|:---|:---|
| *Additional Amounts:* | As set forth in Section 4.10 of the Indenture with respect to the Guarantor and Section 3.12 and Section 4.09 of the Indenture |
| *Denominations:* | $2,000 and integral multiples of $1,000 in excess thereof |
| *Miscellaneous:* | The terms of the Notes shall include such other terms as are set forth in the form of Notes attached hereto as **<u>Exhibit A</u>** and in the Indenture. |

---

***2036 Notes***

---

| | |
|:---|:---|
| *Title:* | 5.875% Guaranteed Notes due 2036 |
| *Issuer:* | LYB International Finance III, LLC |
| *Form:* | The 2036 Notes shall be issued in permanent global form |
| *Guarantor:* | LyondellBasell Industries N.V. |
| *Trustee, Registrar, Transfer* <br> *Agent, Authenticating<br> Agent, and Paying Agent:* | The Bank of New York Mellon Trust Company, N.A. |
| *Aggregate Principal Amount at Maturity:* | $1000000000 |
| *Principal Payment Date:* | January 15, 2036 |
| *Interest:* | 5.875% per annum |
| *Date from which Interest will Accrue:* | November 13, 2025 |
| *Interest Payment Dates:* | Semi-annually on January 15 and July 15, commencing on July 15, 2026 |
| *Record Dates:* | January 1 and July 1 immediately preceding the related interest payment date |
| *Places of Payment:* | The Trustee at its Corporate Trust Office in Houston set forth in Section 2.03 of the First Supplemental Indenture dated May 17, 2023. |

---

---

| | |
|:---|:---|
| *Optional Redemption:* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Prior to the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to the greater of:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 30 basis points less (b) interest accrued to, but excluding, the Redemption Date; and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) 100% of the principal amount of the Notes to be redeemed;<br>plus, in either case, accrued and unpaid interest thereon to, but excluding, the redemption date.<br>On or after the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest on the Notes to be redeemed to, but excluding, the date of redemption.<br>The Notes are also redeemable upon certain tax events as set forth in the Notes and Section 3.12 of the Indenture. |
| *Conversion:* |  |
| *Sinking Fund:* |  |
| *Redemption at the Option of the Holder:* | Upon a Change of Control Triggering Event as set forth in the Notes |
| *Additional Amounts:* | As set forth in Section 4.10 of the Indenture with respect to the Guarantor and Section 3.12 and Section 4.09 of the Indenture |
| *Denominations:* | $2,000 and integral multiples of $1,000 in excess thereof |
| *Miscellaneous:* | The terms of the Notes shall include such other terms as are set forth in the form of Notes attached hereto as **<u>Exhibit B</u>** and in the Indenture. |

---

Subject to the representations, warranties and covenants described in the Indenture, the Company shall be entitled, subject to authorization by the sole member of the Company and an Officer's Certificate, to issue additional Notes of a series of Notes from time to time. Any such additional Notes shall have identical terms as the applicable series of Notes issued on the issue date, other than with respect to the date of issuance, the public offering price, the initial interest payment date, if applicable, and the payment of interest accruing prior to the issue date of such additional Notes (together the "**Additional Notes**"). Any Additional Notes will be issued in accordance with Section 2.01 of the Indenture.

Such officer has read and understands the provisions of the Indenture and the definitions relating thereto. The statements made in this Officer's Certificate are based upon the examination of the provisions of the Indenture and upon the relevant books and records of the Company. In such officer's opinion, he has made such examination or investigation as is necessary to enable such officer to express an informed opinion as to whether or not the covenants and conditions of such Indenture relating to the issuance and authentication of the Notes have been complied with. In such officer's opinion, such covenants and conditions have been complied with.

[*Signature Page Follows*]

IN WITNESS WHEREOF, I have signed this certificate.

Dated: November 13, 2025

---

| | |
|:---|:---|
| LYB INTERNATIONAL FINANCE III, LLC | LYB INTERNATIONAL FINANCE III, LLC |
| By: | /s/ Brendan J. Dalton |
| Name: Brendan J. Dalton | Name: Brendan J. Dalton |
| Title: Treasurer | Title: Treasurer |

---

[*Signature Page to Officer's Certificate*]

EXHIBIT A

FORM OF NOTE DUE 2031

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY NOTE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS A BENEFICIAL INTEREST HEREIN.

TRANSFERS OF THIS NOTE ARE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE ARE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE TRANSFER PROVISIONS OF THE INDENTURE.

IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS.

Exhibit A-1

**CUSIP:** **50249A AQ6<br> ISIN: US50249AAQ67**

**LYB International Finance III, LLC**

**GLOBAL NOTE<br> representing up to**<br> **$[ ]<br> 5.125% Guaranteed Notes due 2031**

**Fully and Unconditionally Guaranteed by**

**LyondellBasell Industries N.V.**

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| | | |
|:---|:---|:---|
| No. | R-[ ] | $[ ] |

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LYB INTERNATIONAL FINANCE III, LLC, a Delaware limited liability company, promises to pay to Cede & Co., or its registered assigns, [ ] DOLLARS ($[ ]) or such greater or lesser principal sum as may be set forth on the Schedule of Increases or Decreases in Global Note attached hereto on January 15, 2031.

Interest Payment Dates: Semi-annually on January 15 and July 15, commencing on July 15, 2026

Record Dates: January 1 and July 1 immediately preceding the related interest payment date

Additional provisions of this Note are set forth on the other side of this Note.

Exhibit A-2

IN WITNESS WHEREOF, the parties have caused this instrument to be duly executed.

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| | |
|:---|:---|
| LYB INTERNATIONAL FINANCE III, LLC, as Issuer | LYB INTERNATIONAL FINANCE III, LLC, as Issuer |
| By: |  |
|  | Name: |
|  | Title: |

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Dated:

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| | |
|:---|:---|
| LYONDELLBASELL INDUSTRIES N.V., as Guarantor | LYONDELLBASELL INDUSTRIES N.V., as Guarantor |
| By: |  |
|  | Name: |
|  | Title: |

---

Dated:

This is one of the Notes referred to in the within-mentioned Indenture:

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| | |
|:---|:---|
| THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee | THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee |
| By: |  |
|  | Name: |
|  | Title: |

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Dated:

[*Signature Page to Global Note*]

[Back of Note]

5.125% Guaranteed Notes due 2031

Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. LYB International Finance III, LLC, a Delaware limited liability company (the "**Company**"), promises to pay interest on the principal amount of this Note at 5.125% per annum from November 13, 2025 until maturity as set forth in the Indenture (as defined below). The Company will pay interest semi-annually in arrears on January 15 and July 15 of each year, or if any such day is not a Business Day, on the next succeeding Business Day without the accrual of interest for the intervening period (each, an "**Interest Payment Date**"). Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the Issue Date; *provided* that the first Interest Payment Date shall be July 15, 2026. The Company will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at the interest rate on the Notes; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace periods) from time to time on demand at the interest rate on the Notes. Interest will be computed on the basis of a 360 day year comprised of twelve 30-day months.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.  *Method of Payment*. The Company will pay interest on the Notes to the Persons who are registered Holders of Notes at the close of business on January 1 and July 1 (whether or not a Business Day), as the case may be, immediately preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.15(b) of the Indenture with respect to defaulted interest. Payment of interest may be made by check mailed to the Holders at their addresses set forth in the register of Holders; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest and premium on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.  *Trustee; Paying Agent and Registrar*. The Bank of New York Mellon Trust Company, N.A., will be the Trustee, Paying Agent and Registrar (the "**Trustee**") under the Indenture with regard to the Notes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.  *Guarantee*. LyondellBasell Industries N.V., a public company with limited liability (*naamloze vennootschap*) under the laws of the Netherlands (the "**Guarantor**"), unconditionally guarantees to the Holders from time to time of the Notes, upon the terms and subject to the conditions set forth in the Indenture, (a) the full and prompt payment of the principal of and any premium on this Note when and as the same shall become due, whether at the Stated Maturity thereof, by acceleration, redemption or otherwise, and (b) the full and prompt payment of any interest on and any Additional Amounts with respect to this Note when and as the same shall become due, subject in each case to any applicable grace period. The Guarantee constitutes a guarantee of payment and not of collection. In the event of a default in the payment of principal of or any premium on any Note when and as the same shall become due, whether at the Stated Maturity thereof, by acceleration, call for redemption or otherwise, or in the event of a default in any sinking fund payment, or in the event of a default in the payment of any interest on or any Additional Amounts with respect to any Note when and as the same shall become due, each of the Trustee and the Holder of such Note shall have the right to proceed first and directly against the Guarantor under the Indenture without first proceeding against the Company or exhausting any other remedies which the Trustee or such Holder may have and without resorting to any other security held by it.

Exhibit A-4

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.  *Indenture*. The Company issued the Notes under an Indenture, dated as of October 10, 2019 (the "**Base Indenture**"), between the Company, the Guarantor and Wells Fargo Bank, National Association, as supplemented by the First Supplemental Indenture dated as of May 17, 2023 among the Company, the Guarantor, Computershare Trust Company, N.A., as base trustee (as successor to Wells Fargo Bank, National Association), and the Trustee (the Base Indenture, as so supplemented, the "**Indenture**"). This Note represents a duly authorized issue of Notes of the Company designated as its 5.125% Guaranteed Notes due 2031 (the "**Notes**"). The Company shall be entitled to issue additional Notes pursuant to Section 2.01 of the Indenture. The Notes issued under the Indenture shall be treated as a single class of securities under the Indenture, unless otherwise specified in the Indenture. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (the "**Trust Indenture Act**"). The Notes are subject to all such terms, and Holders are referred to the Indenture and the Trust Indenture Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.  *Optional Redemption*.

&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) Prior to the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to the greater of:

&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;(i) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the Redemption Date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 25 basis points less (b) interest accrued to, but excluding, the Redemption 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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) 100% of the principal amount of the Notes to be redeemed;

plus, in either case, accrued and unpaid interest thereon to, but excluding, the Redemption Date.

On or after the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest on the Notes to be redeemed to, but excluding, the date of redemption.

Exhibit A-5

&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) Notes called for redemption become due on the date fixed for redemption. Notices of redemption will be mailed or electronically delivered at least 10 but not more than 60 days before the Redemption Date to each Holder of record of the Notes to be redeemed at its registered address. The notice of redemption for the Notes will state, among other things, the amount of Notes to be redeemed, the Redemption Date, the redemption price or, if not ascertainable, the manner of determining the redemption price and the place(s) that payment will be made upon presentation and surrender of Notes to be redeemed. Unless the Company defaults in payment of the redemption price, interest will cease to accrue on any Notes that have been called for redemption at the Redemption Date. Notes called for redemption will be redeemed and repaid in principal amounts of $2,000 or any integral multiple of $1,000 in excess thereof. If less than all the Notes are redeemed at any time, the Trustee will select the Notes to be redeemed on a pro rata basis or by any other method in accordance with the procedures of DTC.

For purposes of determining the optional redemption price, the following definitions are applicable:

"*Par Call Date*" means December 15, 2030 (one month prior to the maturity date of the Notes).

"*Treasury Rate*" means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the Redemption Date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily) — H.15" (or any successor designation or publication) ("H.15") under the caption "U.S. government securities — Treasury constant maturities — Nominal" (or any successor caption or heading) ("H.15 TCM"). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the Redemption Date to the Par Call Date (the "Remaining Life"); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields — one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life — and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the Redemption Date.

Exhibit A-6

If on the third business day preceding the Redemption Date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semiannual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

The Company's actions and determinations in determining the redemption price shall be conclusive and binding for all purposes, absent manifest error. The Trustee shall have no responsibility to determine the redemption price.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7. *Redemption for Changes in Taxes*. In accordance with Section 3.12 of the Indenture, the Company may redeem the Notes in whole but not in part at its discretion at any time upon giving not less than 10 nor more than 60 days' prior notice to the Holders of the Notes (which notice will be irrevocable) at a redemption price equal to 100% of the principal amount thereof, together with accrued and unpaid interest, if any, to the date fixed by the Company for redemption (a "**Tax Redemption Date**") (subject to the right of Holders of record on the relevant record date to receive interest due on the relevant Interest Payment Date and Additional Amounts (if any) in respect thereof) under the circumstances set forth in Section 3.12 of the Indenture.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.  *Sinking Fund*. The Company shall not be required to make sinking fund payments with respect to the Notes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.  *Change of Control Offer*. If a Change of Control Triggering Event (as defined below) occurs, unless the Company has exercised its option to redeem the Notes as described in Section 6, each Holder shall have the right to require the Company to make an offer (a "**Change of Control Offer**") to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess thereof) of that Holder's Notes on the terms set forth herein. In a Change of Control Offer, the Company will offer payment in cash equal to 101% of the aggregate principal amount of Notes repurchased (a "**Change of Control Payment**"), plus accrued and unpaid interest, if any, on the Notes repurchased to the date of repurchase, subject to the right of Holders of record on the applicable record date to receive interest due on the next Interest Payment Date.

Exhibit A-7

Within 30 days following any Change of Control Triggering Event or, at the Company's option, prior to any Change of Control, but after public announcement of the transaction that constitutes or may constitute the Change of Control, a notice will be mailed to Holders of the Notes describing the transaction that constitutes or may constitute the Change of Control Triggering Event and offering to repurchase such Notes on the date specified in the applicable notice, which date will be no earlier than 30 days and no later than 60 days from the date such notice is mailed (a "**Change of Control Payment Date**"). The notice may, if mailed prior to the date of consummation of the Change of Control, state that the Change of Control Offer is conditioned on the Change of Control Triggering Event occurring on or prior to the applicable Change of Control Payment Date.

Upon the Change of Control Payment Date, the Company will, to the extent lawful:

&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) accept for payment all Notes or portions of Notes properly tendered and not withdrawn pursuant to the Change of Control Offer;

&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) deposit with the Paying Agent an amount equal to the Change of Control Payment in respect of all Notes or portions of Notes properly tendered and not withdrawn; 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) deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officers' Certificate stating the aggregate principal amount of Notes or portions of Notes being repurchased.

The Company will not be required to make a Change of Control Offer upon the occurrence of a Change of Control Triggering Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and the third party repurchases all Notes properly tendered and not withdrawn under its offer. In addition, the Company will not repurchase any Notes if there has occurred and is continuing on the Change of Control Payment Date an Event of Default under the Indenture, other than a default in the payment of the Change of Control Payment upon a Change of Control Triggering Event.

The Company will comply with the applicable requirements of Rule 14e-1 under the Securities Exchange Act of 1934, as amended (the "**Exchange Act**"), and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Offer provisions of the Notes, the Company will comply with those securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Offer provisions of the Notes by virtue of any such conflict.

For purposes of this Section 10, the following terms will be applicable:

Exhibit A-8

"*Change of Control*" means the occurrence of any of the following: (1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or more series of related transactions, of all or substantially all of the Guarantor's assets and the assets of the Guarantor's Subsidiaries, taken as a whole, to any person, other than the Guarantor or one of its Subsidiaries; or (2) the Guarantor becomes aware of (by way of a report or any other filing pursuant to Section 13(d) of the Exchange Act, proxy, vote, written notice or otherwise) the acquisition by any person or group (within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act, or any successor provision), including any group acting for the purpose of acquiring, holding or disposing of securities (within the meaning of Rule 13d-5(b)(1) under the Exchange Act), in a single transaction or in a related series of transactions, by way of acquisition, merger, amalgamation, consolidation, transfer, conveyance or other business combination or purchase of beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act, or any successor provision) of more than 50% of the total voting power of the voting stock of the Guarantor, other than by virtue of the imposition of a holding company, or the reincorporation of the Guarantor in another jurisdiction, so long as the beneficial owners of the voting stock of the Guarantor immediately prior to such transaction hold a majority of the voting power of the voting stock of such holding company or reincorporation entity immediately thereafter. Any disposition of a "disposed group" permitted pursuant to Section 5.01(b) of the Indenture will not constitute a Change of Control pursuant to clause (1) of the first sentence of this definition.

Notwithstanding the foregoing, a transaction will not be deemed to involve a Change of Control under clause (2) of the definition of Change of Control above if (i) the Guarantor becomes a direct or indirect wholly owned Subsidiary of a holding company and (ii)(A) the direct or indirect holders of the voting stock of such holding company immediately following that transaction are substantially the same as the holders of the Guarantor's voting stock immediately prior to that transaction or (B) immediately following that transaction no person (other than a holding company satisfying the requirements of this sentence) is the beneficial owner, directly or indirectly, of more than 50% of the voting stock of such holding company. The term "person," as used in this definition of Change of Control, has the meaning given thereto in Section 13(d)(3) of the Exchange Act.

These provisions relating to the Company's obligation to make a Change of Control Offer may be waived or modified with the consent of the Holders of a majority in aggregate principal amount of the Notes.

"*Change of Control Triggering Event*" means the occurrence of both a Change of Control and a Rating Event.

"*Fitch*" means Fitch Ratings, Inc. and its successors.

"*investment grade rating*" means a rating equal to or higher than BBB- (or the equivalent) or better by Fitch, Baa3 (or the equivalent) by Moody's and BBB- (or the equivalent) by S&P, and the equivalent investment grade credit rating from any replacement rating agency or rating agencies selected by the Guarantor.

"*Moody's*" means Moody's Investors Service, Inc. and its successors.

"*rating agencies*" means (1) each of Fitch, Moody's and S&P and (2) if any of Fitch, Moody's or S&P ceases to rate the Notes or fails to make a rating of the Notes publicly available for reasons outside of the Guarantor's control, a "nationally recognized statistical rating organization" within the meaning of Section 3(a)(62) of the Exchange Act selected by the Guarantor (as certified by a resolution of the Company's Board of Directors) as a replacement agency for Fitch, Moody's or S&P, or all of them, as the case may be.

Exhibit A-9

"*rating event*" means the rating on the Notes is lowered by each of the three rating agencies and the Notes are rated below an investment grade rating by each of the three rating agencies, in any case on any day during the period (which period will be extended so long as the rating of the Notes is under publicly announced consideration for a possible downgrade by either of the rating agencies) commencing 60 days prior to the first public notice of the occurrence of a Change of Control or the Guarantor's intention to effect a Change of Control and ending 60 days following consummation of such Change of Control.

"*S&P*" means S&P Global Ratings, a division of S&P Global, Inc., and its successors.

"*voting stock*" means, with respect to any specified "person" (as that term is used in Section 13(d)(3) of the Exchange Act) as of any date, the capital stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.  *Denominations, Transfer, Exchange*. The Notes are in fully registered form only, without coupons, in denominations of $2,000 and integral multiples of $1,000. A holder shall register the transfer or exchange of Notes in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay certain transfer taxes or similar governmental charges payable in connection therewith as permitted by the Indenture. The Registrar need not register the transfer or exchange of any Notes during a period beginning 15 days before the mailing of a redemption notice for any Notes or portions thereof selected for redemption.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.  *Persons Deemed Owners*. The registered Holder of a Note may be treated as its owner for all purposes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.  *Amendment, Supplement and Waiver*. The Indenture or the Notes may be amended or supplemented as provided in the Indenture.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.  *Defaults and Remedies*. If an Event of Default with respect to any Securities of any series at the time outstanding (other than an Event of Default relating to certain events of bankruptcy, insolvency or reorganization of the Company or the Guarantor as specified in the Indenture) occurs and is continuing, the Trustee by notice to the Company and the Guarantor, or the Holders of at least 25% in principal amount of the then outstanding Securities of the series affected by such Event of Default (or, in the case of an Event of Default described in clause (4) of Section 6.01(a) of the Indenture, if outstanding Securities of other series are affected by such Event of Default, then at least 25% in principal amount of the then outstanding Securities of all such series so affected acting as one class) by notice to the Company, the Guarantor and the Trustee, may declare the principal of (or, if any such Securities are Original Issue Discount Securities, such portion of the principal amount as may be specified in the terms of that series) and all accrued and unpaid interest on all then outstanding Securities of such series or of all series, as the case may be, to be due and payable. Upon any such declaration, the amounts due and payable on the Securities shall be due and payable immediately. If an Event of Default specified in clause (6) or (7) of Section 6.01(a) of the Indenture hereof occurs, such amounts shall *ipso facto* become and be immediately due and payable without any declaration, notice or other act on the part of the Trustee or any Holder of the Securities. The Holders of a majority in principal amount of the then outstanding Securities of the series affected by such Event of Default or all series so affected, as the case may be, by written notice to the Trustee may rescind an acceleration and its consequences (other than nonpayment of principal of or premium or interest on or any Additional Amounts with respect to the Securities) if (1) the rescission would not conflict with any judgment or decree, (2) all existing Events of Default with respect to Securities of that series (or of all series, as the case may be) have been cured or waived, except nonpayment of principal, premium, interest or any Additional Amounts that has become due solely because of the acceleration, and (3) the Trustee has been paid any amounts due to it for the compensation as may be agreed in writing by the parties from time to time, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 of the Indenture.

Exhibit A-10

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14. *Authentication*. This Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose until authenticated by the manual or electronic signature of the Trustee.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15.  *GOVERNING LAW*. THE NOTES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK, EXCEPT TO THE EXTENT THE LAWS OF THE STATE OF NEW YORK REQUIRE THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16. *CUSIP and ISIN Numbers*. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Notes and the Trustee may use CUSIP and ISIN numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

The Company will furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to the Company at the following address:

LYB International Finance III, LLC<br> 2800 Post Oak Boulevard

Suite 5100

Houston, Texas 77056<br> Attention: Treasury Operations US

Email: TreasuryOperationsUS@lyondellbasell.com

Exhibit A-11

**ASSIGNMENT FORM**

To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to: ______________________________

(Insert assignee's legal name)

__________________________________________________________________

(Insert assignee's Soc. Sec. or tax I.D. no.)

________________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

(Print or type assignee's name, address and zip code)

and irrevocably appoint _________________________________________________ to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date: _____________________

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| | |
|:---|:---|
| Your Signature: | |
|  | (Sign exactly as your name appears on<br> the face of this Note) |

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Signature Guarantee<sup>\*</sup>: ____________________________

\* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

Exhibit A-12

**OPTION OF HOLDER TO ELECT PURCHASE**

If you want to elect to have this Note purchased by the Company pursuant to Section 9 of the Note, check the box below:

[ ]

If you want to elect to have only part of this Note purchased by the Company pursuant to Section 9 of the Note, state the amount you elect to have purchased:

$______________

Date: _____________________

 <br> Your Signature:   <br> (Sign exactly as your name appears on the face of this Note)

Tax Identification No.:  

Signature Guarantee\*: _____________________________

\* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

Exhibit A-13

**SCHEDULE OF INCREASES OR DECREASES IN GLOBAL NOTE**

The following increases or decreases in this Global Note have been made:

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| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp; **Date of Exchange** | &nbsp;&nbsp; **Amount of<br> decrease in <br> Principal Amount<br> of this Global Note** | &nbsp;&nbsp; **Amount of <br> increase in<br> Principal Amount<br> of this Global Note** | &nbsp;&nbsp; **Principal Amount <br> of Global Note<br> following such <br> decrease or<br> increase** | &nbsp;&nbsp; **Signature of <br> authorized <br> signatory of <br> Trustee or Notes <br> Custodian** |

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Exhibit A-14

EXHIBIT B

FORM OF NOTE DUE 2036

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY NOTE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS A BENEFICIAL INTEREST HEREIN.

TRANSFERS OF THIS NOTE ARE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE ARE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE TRANSFER PROVISIONS OF THE INDENTURE.

IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS.

Exhibit B-1

**CUSIP:** **50249A AR4<br> ISIN: US50249AAR41**

**LYB International Finance III, LLC**

**GLOBAL NOTE<br> representing up to**<br> **$[ ]<br> 5.875% Guaranteed Notes due 2036**

**Fully and Unconditionally Guaranteed by**

**LyondellBasell Industries N.V.**

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| | | |
|:---|:---|:---|
| No. | R-[ ] | $[ ] |

---

LYB INTERNATIONAL FINANCE III, LLC, a Delaware limited liability company, promises to pay to Cede & Co., or its registered assigns, [ ] DOLLARS ($[ ]) or such greater or lesser principal sum as may be set forth on the Schedule of Increases or Decreases in Global Note attached hereto on January 15, 2036.

Interest Payment Dates: Semi-annually on January 15 and July 15, commencing on July 15, 2026

Record Dates: January 1 and July 1 immediately preceding the related interest payment date

Additional provisions of this Note are set forth on the other side of this Note.

Exhibit B-2

IN WITNESS WHEREOF, the parties have caused this instrument to be duly executed.

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| | |
|:---|:---|
| LYB INTERNATIONAL FINANCE III, LLC, as Issuer | LYB INTERNATIONAL FINANCE III, LLC, as Issuer |
| By: |  |
|  | Name: |
|  | Title: |

---

Dated:

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| | |
|:---|:---|
| LYONDELLBASELL INDUSTRIES N.V., as Guarantor | LYONDELLBASELL INDUSTRIES N.V., as Guarantor |
| By: |  |
|  | Name: |
|  | Title: |

---

Dated:

This is one of the Notes referred to in the within-mentioned Indenture:

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| | |
|:---|:---|
| THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee | THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee |
| By: |  |
|  | Name: |
|  | Title: |

---

Dated:

[*Signature Page to Global Note*]

[Back of Note]

5.875% Guaranteed Notes due 2036

Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. LYB International Finance III, LLC, a Delaware limited liability company (the "**Company**"), promises to pay interest on the principal amount of this Note at 5.875% per annum from November 13, 2025 until maturity as set forth in the Indenture (as defined below). The Company will pay interest semi-annually in arrears on January 15 and July 15 of each year, or if any such day is not a Business Day, on the next succeeding Business Day without the accrual of interest for the intervening period (each, an "**Interest Payment Date**"). Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the Issue Date; *provided* that the first Interest Payment Date shall be July 15, 2026. The Company will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at the interest rate on the Notes; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace periods) from time to time on demand at the interest rate on the Notes. Interest will be computed on the basis of a 360 day year comprised of twelve 30-day months.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.  *Method of Payment*. The Company will pay interest on the Notes to the Persons who are registered Holders of Notes at the close of business on January 1 and July 1 (whether or not a Business Day), as the case may be, immediately preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.15(b) of the Indenture with respect to defaulted interest. Payment of interest may be made by check mailed to the Holders at their addresses set forth in the register of Holders; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest and premium on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.  *Trustee; Paying Agent and Registrar*. The Bank of New York Mellon Trust Company, N.A., will be the Trustee, Paying Agent and Registrar (the "**Trustee**") under the Indenture with regard to the Notes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.  *Guarantee*. LyondellBasell Industries N.V., a public company with limited liability (*naamloze vennootschap*) under the laws of the Netherlands (the "**Guarantor**"), unconditionally guarantees to the Holders from time to time of the Notes, upon the terms and subject to the conditions set forth in the Indenture, (a) the full and prompt payment of the principal of and any premium on this Note when and as the same shall become due, whether at the Stated Maturity thereof, by acceleration, redemption or otherwise, and (b) the full and prompt payment of any interest on and any Additional Amounts with respect to this Note when and as the same shall become due, subject in each case to any applicable grace period. The Guarantee constitutes a guarantee of payment and not of collection. In the event of a default in the payment of principal of or any premium on any Note when and as the same shall become due, whether at the Stated Maturity thereof, by acceleration, call for redemption or otherwise, or in the event of a default in any sinking fund payment, or in the event of a default in the payment of any interest on or any Additional Amounts with respect to any Note when and as the same shall become due, each of the Trustee and the Holder of such Note shall have the right to proceed first and directly against the Guarantor under the Indenture without first proceeding against the Company or exhausting any other remedies which the Trustee or such Holder may have and without resorting to any other security held by it.

Exhibit B-4

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.  *Indenture*. The Company issued the Notes under an Indenture, dated as of October 10, 2019 (the "**Base Indenture**"), between the Company, the Guarantor and Wells Fargo Bank, National Association, as supplemented by the First Supplemental Indenture dated as of May 17, 2023 among the Company, the Guarantor, Computershare Trust Company, N.A., as base trustee (as successor to Wells Fargo Bank, National Association), and the Trustee (the Base Indenture, as so supplemented, the "**Indenture**"). This Note represents a duly authorized issue of Notes of the Company designated as its 5.875% Guaranteed Notes due 2036 (the "**Notes**"). The Company shall be entitled to issue additional Notes pursuant to Section 2.01 of the Indenture. The Notes issued under the Indenture shall be treated as a single class of securities under the Indenture, unless otherwise specified in the Indenture. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (the "**Trust Indenture Act**"). The Notes are subject to all such terms, and Holders are referred to the Indenture and the Trust Indenture Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.  *Optional Redemption*.

&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) Prior to the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to the greater of:

&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;(i) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the Redemption Date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 30 basis points less (b) interest accrued to, but excluding, the Redemption 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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) 100% of the principal amount of the Notes to be redeemed;

plus, in either case, accrued and unpaid interest thereon to, but excluding, the Redemption Date.

On or after the Par Call Date, the Notes will be redeemable and repayable, at the Company's option, at any time in whole, or from time to time in part, at a price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest on the Notes to be redeemed to, but excluding, the date of redemption.

Exhibit B-5

&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) Notes called for redemption become due on the date fixed for redemption. Notices of redemption will be mailed or electronically delivered at least 10 but not more than 60 days before the Redemption Date to each Holder of record of the Notes to be redeemed at its registered address. The notice of redemption for the Notes will state, among other things, the amount of Notes to be redeemed, the Redemption Date, the redemption price or, if not ascertainable, the manner of determining the redemption price and the place(s) that payment will be made upon presentation and surrender of Notes to be redeemed. Unless the Company defaults in payment of the redemption price, interest will cease to accrue on any Notes that have been called for redemption at the Redemption Date. Notes called for redemption will be redeemed and repaid in principal amounts of $2,000 or any integral multiple of $1,000 in excess thereof. If less than all the Notes are redeemed at any time, the Trustee will select the Notes to be redeemed on a pro rata basis or by any other method in accordance with the procedures of DTC.

For purposes of determining the optional redemption price, the following definitions are applicable:

"*Par Call Date*" means October 15, 2035 (three months prior to the maturity date of the Notes).

"*Treasury Rate*" means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the Redemption Date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily) — H.15" (or any successor designation or publication) ("H.15") under the caption "U.S. government securities — Treasury constant maturities — Nominal" (or any successor caption or heading) ("H.15 TCM"). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the Redemption Date to the Par Call Date (the "Remaining Life"); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields — one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life — and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the Redemption Date.

If on the third business day preceding the Redemption Date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semiannual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

Exhibit B-6

The Company's actions and determinations in determining the redemption price shall be conclusive and binding for all purposes, absent manifest error. The Trustee shall have no responsibility to determine the redemption price.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7. *Redemption for Changes in Taxes*. In accordance with Section 3.12 of the Indenture, the Company may redeem the Notes in whole but not in part at its discretion at any time upon giving not less than 10 nor more than 60 days' prior notice to the Holders of the Notes (which notice will be irrevocable) at a redemption price equal to 100% of the principal amount thereof, together with accrued and unpaid interest, if any, to the date fixed by the Company for redemption (a "**Tax Redemption Date**") (subject to the right of Holders of record on the relevant record date to receive interest due on the relevant Interest Payment Date and Additional Amounts (if any) in respect thereof) under the circumstances set forth in Section 3.12 of the Indenture.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.  *Sinking Fund*. The Company shall not be required to make sinking fund payments with respect to the Notes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.  *Change of Control Offer*. If a Change of Control Triggering Event (as defined below) occurs, unless the Company has exercised its option to redeem the Notes as described in Section 6, each Holder shall have the right to require the Company to make an offer (a "**Change of Control Offer**") to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess thereof) of that Holder's Notes on the terms set forth herein. In a Change of Control Offer, the Company will offer payment in cash equal to 101% of the aggregate principal amount of Notes repurchased (a "**Change of Control Payment**"), plus accrued and unpaid interest, if any, on the Notes repurchased to the date of repurchase, subject to the right of Holders of record on the applicable record date to receive interest due on the next Interest Payment Date.

Within 30 days following any Change of Control Triggering Event or, at the Company's option, prior to any Change of Control, but after public announcement of the transaction that constitutes or may constitute the Change of Control, a notice will be mailed to Holders of the Notes describing the transaction that constitutes or may constitute the Change of Control Triggering Event and offering to repurchase such Notes on the date specified in the applicable notice, which date will be no earlier than 30 days and no later than 60 days from the date such notice is mailed (a "**Change of Control Payment Date**"). The notice may, if mailed prior to the date of consummation of the Change of Control, state that the Change of Control Offer is conditioned on the Change of Control Triggering Event occurring on or prior to the applicable Change of Control Payment Date.

Exhibit B-7

Upon the Change of Control Payment Date, the Company will, to the extent lawful:

&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) accept for payment all Notes or portions of Notes properly tendered and not withdrawn pursuant to the Change of Control Offer;

&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) deposit with the Paying Agent an amount equal to the Change of Control Payment in respect of all Notes or portions of Notes properly tendered and not withdrawn; 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) deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officers' Certificate stating the aggregate principal amount of Notes or portions of Notes being repurchased.

The Company will not be required to make a Change of Control Offer upon the occurrence of a Change of Control Triggering Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and the third party repurchases all Notes properly tendered and not withdrawn under its offer. In addition, the Company will not repurchase any Notes if there has occurred and is continuing on the Change of Control Payment Date an Event of Default under the Indenture, other than a default in the payment of the Change of Control Payment upon a Change of Control Triggering Event.

The Company will comply with the applicable requirements of Rule 14e-1 under the Securities Exchange Act of 1934, as amended (the "**Exchange Act**"), and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Offer provisions of the Notes, the Company will comply with those securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Offer provisions of the Notes by virtue of any such conflict.

For purposes of this Section 10, the following terms will be applicable:

Exhibit B-8

"*Change of Control*" means the occurrence of any of the following: (1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or more series of related transactions, of all or substantially all of the Guarantor's assets and the assets of the Guarantor's Subsidiaries, taken as a whole, to any person, other than the Guarantor or one of its Subsidiaries; or (2) the Guarantor becomes aware of (by way of a report or any other filing pursuant to Section 13(d) of the Exchange Act, proxy, vote, written notice or otherwise) the acquisition by any person or group (within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act, or any successor provision), including any group acting for the purpose of acquiring, holding or disposing of securities (within the meaning of Rule 13d-5(b)(1) under the Exchange Act), in a single transaction or in a related series of transactions, by way of acquisition, merger, amalgamation, consolidation, transfer, conveyance or other business combination or purchase of beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act, or any successor provision) of more than 50% of the total voting power of the voting stock of the Guarantor, other than by virtue of the imposition of a holding company, or the reincorporation of the Guarantor in another jurisdiction, so long as the beneficial owners of the voting stock of the Guarantor immediately prior to such transaction hold a majority of the voting power of the voting stock of such holding company or reincorporation entity immediately thereafter. Any disposition of a "disposed group" permitted pursuant to Section 5.01(b) of the Indenture will not constitute a Change of Control pursuant to clause (1) of the first sentence of this definition.

Notwithstanding the foregoing, a transaction will not be deemed to involve a Change of Control under clause (2) of the definition of Change of Control above if (i) the Guarantor becomes a direct or indirect wholly owned Subsidiary of a holding company and (ii)(A) the direct or indirect holders of the voting stock of such holding company immediately following that transaction are substantially the same as the holders of the Guarantor's voting stock immediately prior to that transaction or (B) immediately following that transaction no person (other than a holding company satisfying the requirements of this sentence) is the beneficial owner, directly or indirectly, of more than 50% of the voting stock of such holding company. The term "person," as used in this definition of Change of Control, has the meaning given thereto in Section 13(d)(3) of the Exchange Act.

These provisions relating to the Company's obligation to make a Change of Control Offer may be waived or modified with the consent of the Holders of a majority in aggregate principal amount of the Notes.

"*Change of Control Triggering Event*" means the occurrence of both a Change of Control and a Rating Event.

"*Fitch*" means Fitch Ratings, Inc. and its successors.

"*investment grade rating*" means a rating equal to or higher than BBB- (or the equivalent) or better by Fitch, Baa3 (or the equivalent) by Moody's and BBB- (or the equivalent) by S&P, and the equivalent investment grade credit rating from any replacement rating agency or rating agencies selected by the Guarantor.

"*Moody's*" means Moody's Investors Service, Inc. and its successors.

"*rating agencies*" means (1) each of Fitch, Moody's and S&P and (2) if any of Fitch, Moody's or S&P ceases to rate the Notes or fails to make a rating of the Notes publicly available for reasons outside of the Guarantor's control, a "nationally recognized statistical rating organization" within the meaning of Section 3(a)(62) of the Exchange Act selected by the Guarantor (as certified by a resolution of the Company's Board of Directors) as a replacement agency for Fitch, Moody's or S&P, or all of them, as the case may be.

Exhibit B-9

"*rating event*" means the rating on the Notes is lowered by each of the three rating agencies and the Notes are rated below an investment grade rating by each of the three rating agencies, in any case on any day during the period (which period will be extended so long as the rating of the Notes is under publicly announced consideration for a possible downgrade by either of the rating agencies) commencing 60 days prior to the first public notice of the occurrence of a Change of Control or the Guarantor's intention to effect a Change of Control and ending 60 days following consummation of such Change of Control.

"*S&P*" means S&P Global Ratings, a division of S&P Global, Inc., and its successors.

"*voting stock*" means, with respect to any specified "person" (as that term is used in Section 13(d)(3) of the Exchange Act) as of any date, the capital stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.  *Denominations, Transfer, Exchange*. The Notes are in fully registered form only, without coupons, in denominations of $2,000 and integral multiples of $1,000. A holder shall register the transfer or exchange of Notes in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay certain transfer taxes or similar governmental charges payable in connection therewith as permitted by the Indenture. The Registrar need not register the transfer or exchange of any Notes during a period beginning 15 days before the mailing of a redemption notice for any Notes or portions thereof selected for redemption.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.  *Persons Deemed Owners*. The registered Holder of a Note may be treated as its owner for all purposes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.  *Amendment, Supplement and Waiver*. The Indenture or the Notes may be amended or supplemented as provided in the Indenture.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.  *Defaults and Remedies*. If an Event of Default with respect to any Securities of any series at the time outstanding (other than an Event of Default relating to certain events of bankruptcy, insolvency or reorganization of the Company or the Guarantor as specified in the Indenture) occurs and is continuing, the Trustee by notice to the Company and the Guarantor, or the Holders of at least 25% in principal amount of the then outstanding Securities of the series affected by such Event of Default (or, in the case of an Event of Default described in clause (4) of Section 6.01(a) of the Indenture, if outstanding Securities of other series are affected by such Event of Default, then at least 25% in principal amount of the then outstanding Securities of all such series so affected acting as one class) by notice to the Company, the Guarantor and the Trustee, may declare the principal of (or, if any such Securities are Original Issue Discount Securities, such portion of the principal amount as may be specified in the terms of that series) and all accrued and unpaid interest on all then outstanding Securities of such series or of all series, as the case may be, to be due and payable. Upon any such declaration, the amounts due and payable on the Securities shall be due and payable immediately. If an Event of Default specified in clause (6) or (7) of Section 6.01(a) of the Indenture hereof occurs, such amounts shall *ipso facto* become and be immediately due and payable without any declaration, notice or other act on the part of the Trustee or any Holder of the Securities. The Holders of a majority in principal amount of the then outstanding Securities of the series affected by such Event of Default or all series so affected, as the case may be, by written notice to the Trustee may rescind an acceleration and its consequences (other than nonpayment of principal of or premium or interest on or any Additional Amounts with respect to the Securities) if (1) the rescission would not conflict with any judgment or decree, (2) all existing Events of Default with respect to Securities of that series (or of all series, as the case may be) have been cured or waived, except nonpayment of principal, premium, interest or any Additional Amounts that has become due solely because of the acceleration, and (3) the Trustee has been paid any amounts due to it for the compensation as may be agreed in writing by the parties from time to time, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 of the Indenture.

Exhibit B-10

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14. *Authentication*. This Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose until authenticated by the manual or electronic signature of the Trustee.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15.  *GOVERNING LAW*. THE NOTES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK, EXCEPT TO THE EXTENT THE LAWS OF THE STATE OF NEW YORK REQUIRE THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16. *CUSIP and ISIN Numbers*. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Notes and the Trustee may use CUSIP and ISIN numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

The Company will furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to the Company at the following address:

LYB International Finance III, LLC<br> 2800 Post Oak Boulevard

Suite 5100

Houston, Texas 77056<br> Attention: Treasury Operations US

Email: TreasuryOperationsUS@lyondellbasell.com

Exhibit B-11

**ASSIGNMENT FORM**

To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to: ______________________________

(Insert assignee's legal name)

__________________________________________________________________

(Insert assignee's Soc. Sec. or tax I.D. no.)

________________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

(Print or type assignee's name, address and zip code)

and irrevocably appoint _________________________________________________ to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date: _____________________

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| | |
|:---|:---|
| Your Signature: | |
|  | (Sign exactly as your name appears on<br> the face of this Note) |

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Signature Guarantee<sup>\*</sup>: ____________________________

\* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

Exhibit B-12

**OPTION OF HOLDER TO ELECT PURCHASE**

If you want to elect to have this Note purchased by the Company pursuant to Section 9 of the Note, check the box below:

[ ]

If you want to elect to have only part of this Note purchased by the Company pursuant to Section 9 of the Note, state the amount you elect to have purchased:

$______________

Date: _____________________

 <br> Your Signature:   <br> (Sign exactly as your name appears on the face of this Note)

Tax Identification No.:  

Signature Guarantee\*: _____________________________

\* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

Exhibit B-13

**SCHEDULE OF INCREASES OR DECREASES IN GLOBAL NOTE**

The following increases or decreases in this Global Note have been made:

---

| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp; **Date of Exchange** | &nbsp;&nbsp; **Amount of <br> decrease in <br> Principal Amount <br> of this Global Note** | &nbsp;&nbsp; **Amount of <br> increase in <br> Principal Amount <br> of this Global Note** | &nbsp;&nbsp; **Principal Amount<br> of Global Note <br> following such <br> decrease or <br> increase** | &nbsp;&nbsp; **Signature of<br> authorized<br> signatory of <br> Trustee or Notes <br> Custodian** |

---

Exhibit B-14

## Exhibit 5.1

**Exhibit 5.1**

![](tm2530154d4_ex5-1img01.jpg)

November 13, 2025

LYB International Finance III, LLC

LyondellBasell Industries N.V.

c/o LyondellBasell Industries N.V.

4th Floor, One Vine Street

London W1J OAH

United Kingdom

Re: *LyondellBasell Industries N.V. and LYB International Finance III, LLC; Registration Statement on Form S-3 (File No. 333-283755)*

Ladies and Gentlemen:

We have acted as counsel to LYB International Finance III, LLC, a Delaware limited liability company (the "<u>Company</u>"), and LyondellBasell Industries N.V., a public company with limited liability (*naamloze vennootschap*) in the country of The Netherlands (the "<u>Guarantor</u>"), in connection with the preparation and filing of the prospectus supplement, dated November 10, 2025, filed with the Securities and Exchange Commission (the "<u>Commission</u>") on November 12, 2025 pursuant to Rule 424(b) of the Securities Act (as defined below) (the "<u>Prospectus Supplement</u>"), and the offering and sale by the Company pursuant thereto of (i) $500,000,000 aggregate principal amount of 5.125% Guaranteed Notes due 2031 (the "<u>2031 Notes</u>") and (ii) $1,000,000,000 aggregate principal amount of 5.875% Guaranteed Notes due 2036 (the "<u>2036 Notes</u>" and, together with the 2031 Notes, the "<u>Notes</u>") pursuant to the Underwriting Agreement dated as of November 10, 2025 among the Company, the Guarantor and the Underwriters named therein.

The Notes are being issued pursuant to the Indenture, dated as of October 10, 2019 (the "<u>Base Indenture</u>"), as supplemented by the First Supplemental Indenture dated May 17, 2023, among the Company, the Guarantor, Computershare Trust Company, N.A., as base trustee (as successor to Wells Fargo Bank, National Association), and The Bank of New York Mellon Trust Company, N.A., as trustee, as further modified in respect of the Notes by the Officer's Certificate pursuant to Section 2.01 of the Base Indenture dated as of November 13, 2025 (as so supplemented and modified, the "<u>Indenture</u>"), and are being guaranteed pursuant to the terms of the Indenture by the Guarantor (the "<u>Guarantee</u>").

In arriving at the opinion expressed below, we have examined originals, or copies certified or otherwise identified to our satisfaction as being true and complete copies of the originals, of the Indenture, the Notes, the Guarantee and such other documents, corporate records, certificates of officers of the Company and the Guarantor and of public officials and other instruments as we have deemed necessary or advisable to enable us to render these opinions. In our examination, we have assumed, without independent investigation, the genuineness of all signatures, the legal capacity and competency of all natural persons, the authenticity of all documents submitted to us as originals and the conformity to original documents of all documents submitted to us as copies. As to any facts material to these opinions, we have relied to the extent we deemed appropriate and without independent investigation upon statements and representations of officers and other representatives of the Company, the Guarantor and others.

**Gibson, Dunn & Crutcher LLP**

811 Main Street Suite 3000 \| Houston, TX 77002-6117 \| T: 346.718.6600 \| F: 346.718.6620 \| gibsondunn.com

![](tm2530154d4_ex5-1img01.jpg)

November 13, 2025

We are not admitted or qualified to practice law in The Netherlands. Therefore, we have relied upon the opinions of De Brauw Blackstone Westbroek N.V., Dutch counsel for the Company and the Guarantor, filed as exhibits to the Guarantor's Current Report on Form 8-K filed with the Commission on November 13, 2025, with respect to matters governed by the laws of The Netherlands.

Based upon the foregoing, and subject to the assumptions, exceptions, qualifications and limitations set forth herein, we are of the opinion that the Notes are legal, valid and binding obligations of the Company, enforceable against the Company in accordance with their respective terms, and the Guarantee of the Notes is a legal, valid and binding obligation of the Guarantor obligated thereon, enforceable against the Guarantor in accordance with its terms.

The opinion expressed above is subject to the following additional exceptions, qualifications, limitations and assumptions:

&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. We render no opinion herein as to matters involving the laws of any jurisdiction other than the State of New York and the United States of America and for purposes of our opinions above, the Delaware Limited Liability Company Act. We are not admitted to practice in the State of Delaware; however, we are generally familiar with the Delaware Limited Liability Company Act as currently in effect and have made such inquiries as we consider necessary to render the opinions above. We have further assumed without independent investigation that the operating agreement of the Company constitutes a legal, valid and binding obligation of the Company, enforceable against it in accordance with its terms; to the extent our opinions above are dependent on the interpretation of such agreement, they are based on the plain meaning of the provisions thereof in light of the Delaware Limited Liability Company Act. Without limitation, we do not express any opinion regarding any Delaware contract law. This opinion is limited to the effect of the current state of the laws of the State of New York and the United States of America and, to the limited extent set forth above, the laws of the State of Delaware, and the facts as they currently exist. We assume no obligation to revise or supplement this opinion in the event of future changes in such laws or the interpretations thereof or such facts.

&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. The opinions above are each subject to (i) the effect of any bankruptcy, insolvency, reorganization, moratorium, arrangement or similar laws affecting the rights and remedies of creditors generally, including without limitation the effect of statutory or other laws regarding fraudulent transfers or preferential transfers, and (ii) general principles of equity, including without limitation concepts of materiality, reasonableness, good faith and fair dealing and the possible unavailability of specific performance, injunctive relief or other equitable remedies regardless of whether enforceability is considered in a proceeding in equity or at law.

![](tm2530154d4_ex5-1img01.jpg)

November 13, 2025

&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. We express no opinion regarding the effectiveness of (i) any waiver of stay, extension or usury laws or of unknown future rights; (ii) any waiver (whether or not stated as such) under the Indenture, the Guarantee or the certificates evidencing the global Notes (collectively, the "<u>Specified Note Documents</u>") of, or any consent thereunder relating to, unknown future rights or the rights of any party thereto existing, or duties owing to it, as a matter of law; (iii) any waiver (whether or not stated as such) contained in the Specified Note Documents of rights of any party, or duties owing to it, that is broadly or vaguely stated or does not describe the right or duty purportedly waived with reasonable specificity; (iv) provisions relating to indemnification, exculpation or contribution, to the extent such provisions may be held unenforceable as contrary to public policy or federal or state securities laws or due to the negligence or willful misconduct of the indemnified party; (v) any purported fraudulent transfer "savings" clause; (vi) any provision in any Specified Note Document waiving the right to object to venue in any court; (vii) any agreement to submit to the jurisdiction of any Federal court; (viii) any waiver of the right to jury trial; or (ix) any provision to the effect that every right or remedy is cumulative and may be exercised in addition to any other right or remedy or that the election of some particular remedy does not preclude recourse to one or more others.

We consent to the filing of this opinion as an exhibit to the Company's Current Report on Form 8-K, which is deemed incorporated by reference into the Registration Statement on Form S-3 (Registration No. 333-283755), and to the reference to our firm under the heading "Legal Matters" in the Prospectus Supplement. In giving these consents, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission promulgated thereunder.

Very truly yours,

/s/ Gibson, Dunn & Crutcher LLP

## Exhibit 5.2

**Exhibit 5.2**

---

| | |
|:---|:---|
|  | Advocaten<br> Notarissen<br> Belastingadviseurs |
| <br> ![](tm2530154d4_ex5-2img02.jpg) | <br> ![](tm2530154d4_ex5-2img02.jpg) |
| To the Guarantor (as defined below) | Burgerweeshuispad 201<br> P.O. Box 75084<br> 1070 AB Amsterdam<br>T +31 20 577 1771<br> F +31 20 577 1775 |

---

---

| | | |
|:---|:---|:---|
| Date 13 November 2025 | Date 13 November 2025 | F.J.M. Hengst<br> E ferdinand.hengst@debrauw.com<br> T +31 20 577 1956<br> F +31 20 577 1775 |
| | | F.J.M. Hengst<br> E ferdinand.hengst@debrauw.com<br> T +31 20 577 1956<br> F +31 20 577 1775 |
| Our ref. | M41900887/1/20750692 | F.J.M. Hengst<br> E ferdinand.hengst@debrauw.com<br> T +31 20 577 1956<br> F +31 20 577 1775 |
|  |  | F.J.M. Hengst<br> E ferdinand.hengst@debrauw.com<br> T +31 20 577 1956<br> F +31 20 577 1775 |
| Re: | | |
| Dear Sir/Madam, | Dear Sir/Madam, | Dear Sir/Madam, |

---

**LyondellBasell Industries N.V. (the "Guarantor")<br> USD 500,000,000 5.125% Guaranteed Notes due 2031**

**USD 1,000,000,000 5.875% Guaranteed Notes due 2036**

**(the "Notes")**

---

| | |
|:---|:---|
| **1** | **Introduction** |

---

We, De Brauw Blackstone Westbroek N.V. ("**De Brauw**") act as Dutch legal advisers to the Guarantor in connection with the Notes and the Registration.

Certain terms used in this opinion are defined in the **Annex** (*Definitions*).

---

| | |
|:---|:---|
| **2** | **SCOPE OF WORK** |

---

As set out in paragraphs 1 and 7, we give this opinion as Dutch legal advisers and our duty of care is governed by Dutch law. By implication:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) This opinion is limited to Dutch law.
 It (including all terms used in it) is to be construed in accordance with Dutch law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) As required by Dutch law, in preparing
 and issuing this opinion, we have observed the care which is to be expected from a reasonably
 proficient and reasonably acting Dutch opinion giver in similar circumstances (including
 our reputation) and accordingly:

De Brauw Blackstone Westbroek N.V., Amsterdam, is registered with the Trade Register in the Netherlands under no. 27171912.

All services and other work are carried out under an agreement of instruction ("overeenkomst van opdracht") with De Brauw Blackstone Westbroek N.V. The agreement is subject to the General Conditions, which have been filed with the register of the District Court in Amsterdam and contain a limitation of liability.

![](tm2530154d4_ex5-2img02.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) we have performed the factual research
 set out in paragraph 3 and not any additional fact-finding actions (including not in respect
 of the correctness of the assumptions in paragraph 4 or the applicability of the qualifications
 in paragraph 6 except as expressly set out in it);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) we have examined the text of the documents
 listed in paragraph 3 and not researched their meaning and effect beyond their semantic meaning
 to a Dutch opinion giver (including not their meaning and effect under any law other than
 Dutch law);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) we have performed legal research into
 Dutch law reasonably likely to be relevant to this opinion and not any additional legal research
 (including into Dutch law not in effect on or prior to the date of this opinion); 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;(iv) we do not express any opinion or view
 other than as expressly set out in paragraphs 5 and 6 (including not in respect of any document,
 or on any reference to a document, not listed in paragraph 3).

This opinion is limited to its date.

---

| | |
|:---|:---|
| **3** | **Factual research** |

---

We have examined the following documents:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) A copy of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) each Agreement signed by the Guarantor;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) the form of the Notes, including the
 Guarantee as included in the Officer's Certificate;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) the Registration Statement, including
 the Base Prospectus and the Prospectus Supplement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) the Base Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) the Officer's Certificate; 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;(vi) a draft of the Current Report.

**2 /** 16

![](tm2530154d4_ex5-2img02.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) A copy of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) the Guarantor's deed of incorporation
 and its articles of association, as provided by the Chamber of Commerce (*Kamer van Koophandel*);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) each Board Regulation; 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;(iii) each Trade Register Extract.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) A copy of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) each Corporate Resolution;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) the Company Certificate; 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;(iii) the Guarantor CEO Confirmation.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) A copy of the:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Power of Attorney;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) 2019 Power of Attorney;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) 2023 Power of Attorney;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) 2024 Power of Attorney; 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;(v) 2025 Power of Attorney.

In addition, we have obtained the following confirmations on the date of this opinion:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) Confirmation by telephone from the Chamber
 of Commerce that the 2025 Trade Register Extract is up to date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) Confirmation through https://data.europa.eu/data/datasets/consolidated-list-of-persons-groups-and-entities-subject-to-eu-financial-sanctions?locale=en
 and https://www.rijksoverheid.nl/documenten/rapporten/2015/08/27/nationale-terrorismelijst
 that the Guarantor is not included on any Sanctions List.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) Confirmation through www.rechtspraak.nl,
 derived from the Central Insolvency Register (including from the segments for EU registrations
 and publications about public composition proceedings outside bankruptcy), that the Guarantor
 is not registered as being subject to a public Dutch Insolvency or foreign Insolvency Proceedings.

**3** / 16

![](tm2530154d4_ex5-2img02.jpg)

---

| | |
|:---|:---|
| **4** | **Assumptions** |

---

We have made the following assumptions:

(a) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Each copy document conforms to the original
 and each original is genuine and complete.

(ii) &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;(A) Each signature (including each electronic
 signature) is the genuine signature of the individual concerned.

&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;(B) Each electronic signature is a qualified
 electronic signature or the signing method used for it is sufficiently reliable.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) Each confirmation listed in paragraph
 3 is true.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) Each Agreement has been signed by all
 parties, all Notes have been or will have been issued, and the Registration Statement and
 the Prospectus Supplement have been filed with the SEC, in the form referred to in this opinion.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) Each party validly entered into the Base
 Indenture.

(b) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) All Board Regulations remain in force
 without modification.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Each Corporate Resolution has been duly
 adopted and remains in force without modification.

(c) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Power of Attorney:

&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;(A) has been signed on behalf of the Guarantor
 expressed to be granting it by its managing directors in accordance with its articles of
 association; 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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) remains in force without modification;

**4** / 16

![](tm2530154d4_ex5-2img02.jpg)

and no rule of law (other than Dutch law) which under the 1978 Hague Convention on the Law applicable to Agency applies or may be applied to the existence and extent of the authority of any person authorised to sign any Agreement on behalf of the Guarantor under the Power of Attorney, adversely affects the existence and extent of that authority as expressed in the Power of Attorney (including, whether or not expressed, to sign by electronic signature).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) The Agreements have been signed on behalf
 of the Guarantor by one of its managing directors or by a person named as authorised representative
 in the Power of Attorney granted by it.

(d) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Any Notes offered to the public in the
 Netherlands have been, are and will be so offered in accordance with the Prospectus Regulation
 and the Offer Regulations.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) The Notes have not been, are not and
 will not be admitted to trading on the regulated market of Euronext Amsterdam or on any other
 regulated market in the Netherlands.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) At the time when the Issuer disposed
 or disposes of the Notes in the context of the offer of the Notes, neither the Issuer nor
 the Guarantor possessed or possesses inside information (*voorwetenschap*) in respect
 of the Issuer or the Guarantor or the trade in the Notes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) The Issuer is a wholly owned subsidiary
 of the Guarantor.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) The Issuer does not qualify as a bank
 (*bank*) within the meaning of the Wft.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) Each trust party to the Indenture is a
 trust to which the Trust Convention applies.

---

| | |
|:---|:---|
| **5** | **Opinion** |

---

Within the limitations set out in paragraph 2, based on the factual research described in paragraph 3 and the assumptions made in paragraph 4 and subject to the qualifications in paragraph 6 and any matters not disclosed to us, we are of the following opinion:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The Guarantor has been incorporated and
 exists as a public limited liability company (*naamloze vennootschap*).

**5** / 16

![](tm2530154d4_ex5-2img02.jpg)

(b) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) The Guarantor has the corporate power
 to enter into and perform the Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) The Guarantor has taken all necessary
 corporate action to authorise its entry into and performance of the Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) The Guarantor has validly signed the
 Agreements.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) The Guarantor's entry into and performance
 of the Agreements do not violate Dutch law or its articles of association.

---

| | |
|:---|:---|
| **6** | **Qualifications** |

---

This opinion is subject to the following qualifications:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) This opinion is subject to any limitations
 arising from (i) rules relating to Dutch Insolvencies, (ii) rules relating
 to foreign insolvency or composition or restructuring proceedings (including foreign Insolvency
 Proceedings), (iii) other rules regulating conflicts between rights of creditors,
 or (iv) resolution, intervention and other measures in relation to financial enterprises
 or their affiliated entities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The Sanction Act 1977 (*Sanctiewet 1977*)
 or international sanctions may affect whether (i) the Guarantor's entry into and performance
 of the Agreements violate Dutch law, and (ii) the Agreements and the Notes are valid,
 binding and enforceable.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) To the extent that Dutch law applies,
 a legal act (*rechtshandeling*) performed by a person (including (without limitation)
 an agreement pursuant to which it guarantees the performance of the obligations of another
 person and any other legal act having a similar effect) may be nullified by any of its creditors,
 if (a) it performed the act without an obligation to do so (*onverplicht*), (b) the
 creditor concerned was prejudiced as a consequence of the act, and (c) at the time the
 act was performed both it and (unless the act was for no consideration (*om niet*))
 the party with or towards which it acted knew or should have known that one or more of its
 creditors (existing or future) would be prejudiced.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) If a legal act (*rechtshandeling*)
 performed by a Dutch legal entity (including (without limitation) an agreement pursuant to
 which it guarantees the performance of, or provides or agrees to provide security for, any
 of another person's obligations and any other legal act having a similar effect) is not in
 the entity's interest, the act may (i) exceed the entity's corporate or other power,
 (ii) violate its articles of association, and (iii) be nullified by it if the other
 party or parties to the act knew or should have known without investigation that the act
 is not in the entity's interest.

**6** / 16

![](tm2530154d4_ex5-2img02.jpg)

(e) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) An extract from the Trade Register does
 not provide conclusive evidence that the facts set out in it are correct. However, under
 the 2007 Trade Register Act (*Handelsregisterwet 2007*), subject to limited exceptions,
 a legal entity or partnership cannot invoke the incorrectness or incompleteness of its Trade
 Register registration against third parties who were unaware of the incorrectness or incompleteness.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) A confirmation from the Central Insolvency
 Register does not provide conclusive evidence that an entity is not subject to a Dutch Insolvency
 or foreign Insolvency Proceedings (also because they are not all registered).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) The recognition of each trust party to
 the Indenture as a trust is subject to the Trust Convention.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) We do not express any opinion on:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) the validity, binding effect or enforceability
 of any Agreement, the Notes, the Current Report or the Registration Statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) tax matters;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) anti-trust, state-aid or competition
 laws;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) financial assistance;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) sanctions laws;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(vi) in rem matters; 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;(vii) any laws that we, having exercised
 customary professional diligence, could not be reasonably expected to recognize as being
 applicable to the Agreements or the transaction pursuant to the Agreements to which this
 opinion relates.

**7** / 16

![](tm2530154d4_ex5-2img02.jpg)

---

| | |
|:---|:---|
| **7** | **Reliance** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) This opinion is an exhibit to the Current
 Report and may be relied upon by Gibson, Dunn & Crutcher LLP for the purpose of
 the Registration. It may not be supplied, and its contents or existence may not be disclosed,
 to any person other than as an exhibit to (and therefore together with) the Current Report
 and may not be relied upon for any purpose other than the Registration.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) By accepting this opinion, each person
 accepting this opinion agrees 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;(i) only we, De Brauw (and not any other
 person, including any person working at or affiliated with us) will have any liability in
 connection with this opinion;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) our liability in connection with this
 opinion is limited to the amount that is paid out in the specific case under our insurance,
 plus the applicable deductible;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) the agreements in this paragraph 7,
 our duty of care and all liability and other matters relating to this opinion will be governed
 exclusively by Dutch law and the Dutch courts will have exclusive jurisdiction to settle
 any dispute relating to them;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) this opinion may be signed with an electronic
 signature. This has the same effect as if signed with a handwritten signature; 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;(v) the agreements in this paragraph 7 apply
 in addition to, and do not set aside, our general terms and conditions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) The Guarantor may:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) file this opinion as an exhibit to the
 Current Report; 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;(ii) refer to De Brauw giving this opinion
 under the heading "Item 9.01 Financial Statements and Exhibits" in the Current
 Report.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) The previous sentence is no admittance
 from De Brauw that we are in the category of persons whose consent for the filing and reference
 as set out in that sentence is required under Section 7 of the Securities Act or any
 rules or regulations of the SEC promulgated under it.

**8** / 16

![](tm2530154d4_ex5-2img02.jpg)

---

| |
|:---|
| Yours faithfully, |
| De Brauw Blackstone Westbroek N.V. |
| /s/ Ferdinand Hengst |
| Ferdinand Hengst |
| Advocaat |

---

**9** / 16

![](tm2530154d4_ex5-2img02.jpg)

**Annex – Definitions**

**Part 1 – General**

In this opinion:

"**Agreements**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Base Indenture**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Base Prospectus**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Board Regulations**" is defined in part 2 (*Guarantor*) of this Annex.

"**Company Certificate**" is defined in part 2 (*Guarantor*) of this Annex.

"**Corporate Resolutions**" is defined in part 2 (*Guarantor*) of this Annex.

"**Current Report**" is defined in part 3 (*Issue Documents*) of this Annex

"**De Brauw**" means De Brauw Blackstone Westbroek N.V.

"**Dutch Insolvency**" means bankruptcy (*faillissement*), suspension of payments (*surseance van betaling*) or restructuring proceedings outside bankruptcy (*akkoordprocedures buiten faillissement*).

"**Dutch law**" means the national law of the Netherlands and European Union and international law to the extent directly applicable in the Netherlands.

"**Guarantee**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Guarantor**" is defined in part 2 (*Guarantor*) of this Annex.

"**Guarantor CEO Confirmation**" is defined in part 2 (*Guarantor*) of this Annex.

"**Indenture**" is defined in part 3 (*Issue Documents*) of this Annex

"**Insolvency Proceedings**" means insolvency proceedings as defined in Article 2(4) of Regulation (EU) 2015/848 of the European Parliament and of the Council of 20 May 2015 on insolvency proceedings (recast).

"**Issuer**" means LYB International Finance III, LLC, with seat in Delaware, United States of America.

"**Notes**" means each of:

**10** / 16

![](tm2530154d4_ex5-2img02.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;(a) the USD 500,000,000 5.125% Guaranteed
 Notes issued by the Issuer due 2031; and

&nbsp;&nbsp;&nbsp;&nbsp;(b) the USD 1,000,000,000 5.875% Guaranteed
 Notes issued by the Issuer due 2036.

"**Offer Regulations**" means:

(a) Commission Delegated Regulation (EU) 2019/979
 of 14 March 2019 supplementing Regulation (EU) 2017/1129 of the European Parliament
 and of the Council with regard to regulatory technical standards on key financial information
 in the summary of a prospectus, the publication and classification of prospectuses, advertisements
 for securities, supplements to a prospectus, and the notification portal, and repealing Commission
 Delegated Regulation (EU) No 382/2014 and Commission Delegated Regulation (EU) 2016/301;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Commission Delegated Regulation (EU) 2019/980
 of 14 March 2019 supplementing Regulation (EU) 2017/1129 of the European Parliament
 and of the Council as regards the format, content, scrutiny and approval of the prospectus
 to be published when securities are offered to the public or admitted to trading on a regulated
 market, and repealing Commission Regulation (EC) No 809/2004;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Regulation (EU) No 596/2014 of the European
 Parliament and of the Council of 16 April 2014 on market abuse (market abuse regulation)
 and repealing Directive 2003/6/EC of the European Parliament and of the Council and Commission
 Directives 2003/124/EC, 2003/125/EC and 2004/72/EC;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Regulation (EC) No 1060/2009 of the European
 Parliament and of the Council of 16 September 2009 on credit rating agencies to the
 extent applicable to the Prospectus; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) the Wft.

"**Officer's Certificate**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Power of Attorney**" is defined in part 2 (*Guarantor*) of this Annex.

"**Prospectus**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Prospectus Regulation**" means Regulation (EU) 2017/1129 of the European Parliament and of the Council of 14 June 2017 on the prospectus to be published when securities are offered to the public or admitted to trading on a regulated market, and repealing Directive 2003/71/EC.

"**Prospectus Supplement**" is defined in part 3 (*Issue Documents*) of this Annex.

**11** / 16

![](tm2530154d4_ex5-2img02.jpg)

"**Registration**" means the registration by the Issuer of the Notes with the SEC under the Securities Act.

"**Registration Statement**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Sanctions List**" means each of:

(a) The Consolidated list of persons, groups and
 entities subject to EU financial sanctions; and

(b) The National terrorism sanctions list (*Nationale sanctielijst terrorisme*).

"**SEC**" means the U.S. Securities and Exchange Commission.

"**Securities Act**" means the U.S. Securities Act of 1933, as amended.

"**the Netherlands**" means the European part of the Netherlands.

"**Trade Register Extract**" is defined in part 2 (*Guarantor*) of this Annex.

"**Trustee**" means The Bank of New York Mellon Trust Company, N.A.

"**Trust Convention**" means the 1985 Convention on the Law applicable to Trusts and their Recognition.

"**Underwriters**" means Citigroup Global Markets Inc., Deutsche Bank Securities Inc., and J.P. Morgan Securities LLC as representatives of the several underwriters listed in Schedule A of the Underwriting Agreement.

"**Underwriting Agreement**" is defined in part 3 (*Issue Documents*) of this Annex.

"**Wft**" means the Financial Markets Supervision Act (*Wet op het financieel toezicht*).

"**2019 Power of Attorney**" is defined in part 2 (*Guarantor*) of this Annex.

"**2023 Power of Attorney**" is defined in part 2 (*Guarantor*) of this Annex.

"**2024 Power of Attorney**" is defined in part 2 (*Guarantor*) of this Annex.

"**2025 Power of Attorney**" is defined in part 2 (*Guarantor*) of this Annex.

"**2025 Trade Register Extract**" is defined in part 2 (*Guarantor*) of this Annex.

**12** / 16

![](tm2530154d4_ex5-2img02.jpg)

**Part 2 – Guarantor**

In this opinion:

"**Guarantor**" means LyondellBasell Industries N.V., with seat in Rotterdam, Trade Register number 24473890, and in relation to it:

(a) "**Board Regulations**" means
 each of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) the management board regulations of its
 management board (*bestuur*) dated 18 November 2021 and retrieved from its website
 on 23 October 2025; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) the charter of the Finance Committee
 of its management board (*bestuur*) dated 21 May 2025 and retrieved from its website
 on 23 October 2025;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) "**Company Certificate** "
 means the company certificate from the corporate secretary of the Guarantor dated 13 November 2025
 relating to the October 2025 Corporate Resolutions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) "**Corporate Resolutions** "
 means:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) the resolutions of its management board
 (*bestuur*), including a power of attorney granted by it to each of the Chief Executive
 Officer (Peter Vanacker), the Chief Financial Officer (Agustin Iquierdo), the General Counsel
 (Jeffrey Kaplan), the Treasurer (Brendan Dalton) and the Secretary (Charity Kohl) (or any
 successors in the aforementioned roles), adopted during a meeting on 29 October 2025,
 as reflected in the extract of the minutes of that meeting attached to the Company Certificate
 the (the "**October 2025 Corporate Resolutions** ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) the resolutions of its management board
 (*bestuur*), including a power of attorney granted by it to each of the Chief Executive
 Officer (Peter Vanacker), the Chief Financial Officer (Michael McMurray or Agustin Iquierdo,
 as applicable), the General Counsel (Jeff Kaplan), the Treasurer (Donny Chia) and the Secretary
 (Charity Kohl) (or any successors in the aforementioned roles), adopted during a meeting
 on 27 February 2025, as reflected in the extract of the minutes of that meeting attached
 to the Company Certificate (the "**February 2025 Corporate Resolutions** ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) the resolutions of its management board
 (*bestuur*), including a power of attorney granted by it to each of the Chief Executive
 Officer (Peter Vanacker), the Chief Financial Officer (Michael McMurray), the General Counsel
 (Jeff Kaplan), the Treasurer (Donny Chia) and the Secretary (Charity Kohl), adopted during
 a meeting on 17 November 2023 (the "**November 2023 Corporate Resolutions** ");

**13** / 16

![](tm2530154d4_ex5-2img02.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) the resolutions of its management board
 (*bestuur*), including a power of attorney granted by it to each of the Chief Executive
 Officer (Peter Vanacker), the Chief Financial Officer (Michael McMurray), the General Counsel
 (Jeff Kaplan), the Treasurer (Donny Chia) and the Secretary (Charity Kohl), adopted during
 a meeting on 23 February 2023 (the "**February 2023 Corporate Resolutions** ");
 and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) the resolutions of its management board
 (*bestuur*), including a power of attorney granted by it to each of the Chief Executive
 Officer (Bob Patel), the Chief Financial Officer (Thomas Aebischer), the Chief Legal Officer
 (Jeff Kaplan), the Treasurer (Larry Somma) and the Secretary (Charity Kohl), adopted during
 a meeting on 17 July 2019 (the "**2019 Corporate Resolutions** ");

(d) "**Guarantor CEO Confirmation** "
 means the confirmatory statement from the stated Chief Executive Officer of the Guarantor
 via email on 10 November 2025 approving the terms of the Agreements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) "**Power of Attorney**" means
 the power of attorney included in the resolutions of its management board referred to in
 the definition of "October 2025 Corporate Resolutions" at paragraph (c)(i) above;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) "**Trade Register Extracts** "
 means each of the Trade Register extracts relating to it provided by the Chamber of Commerce
 and dated:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) 12 November 2025 (the "**2025 Trade Register Extract** ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) 13 May 2025;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) 23 February 2024;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) 16 May 2023; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) 11 July 2019;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) "**2019 Power of Attorney** "
 means the power of attorney included in the resolutions of its management board referred
 to in the definition of "2019 Corporate Resolutions" at paragraph (c)(v) above;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) "**2023 Power of Attorney** "
 means the power of attorney included in the resolutions of its management board referred
 to in the definition of "February 2023 Corporate Resolutions" at paragraph
 (c)(iv) above; and

**14** / 16

![](tm2530154d4_ex5-2img02.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) "**2024 Power of Attorney** "
 means the power of attorney included in the resolutions of its management board referred
 to in the definition of "November 2023 Corporate Resolutions" at paragraph
 (c)(iii) above.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(j) **''2025 Power of Attorney** "
 means the power of attorney included in the resolutions of its management board referred
 to in the definition of "February 2025 Corporate Resolutions" at paragraph
 (c)(ii) above

**15** / 16

![](tm2530154d4_ex5-2img02.jpg)

**Part 3 – Issue Documents**

In this opinion:

"**Agreements**" means the Indenture and the Underwriting Agreement.

"**Base Indenture**" means the indenture dated 10 October 2019 between the Issuer, the Guarantor and Wells Fargo Bank, National Association, as trustee.

"**Base Prospectus**" means the prospectus included in the Registration Statement.

"**Current Report**" means the Issuer's current report on Form 8-K dated 13 November 2025, reporting the issue of the Notes (excluding any documents incorporated by reference into the report and any exhibits to the report).

"**Guarantee**" means the guarantee of the Notes by the Guarantor.

"**Indenture**" means the Base Indenture as supplemented by the first supplemental indenture dated 17 May 2023, among the Issuer, the Guarantor, Computershare Trust Company, N.A. as base trustee and the Trustee, as further modified in respect of the Notes by the Officer's Certificate pursuant to Section 2.01 of the Base Indenture.

"**Officer's Certificate**" means the Officer's Certificate in relation to the Indenture dated 13 November 2025.

"**Prospectus**" means the Base Prospectus as supplemented by the Prospectus Supplement.

"**Prospectus Supplement**" means the prospectus supplement dated ___ November 2025.

"**Registration Statement**" means the registration statement on Form S-3 dated 12 December 2024 in relation to the registration by the Guarantor and the Issuer of, inter alia, the Notes with the SEC under the Securities Act (including the Base Prospectus, but excluding any documents incorporated by reference in it and any exhibits to it), as amended and supplemented on the date hereof.

"**Underwriting Agreement**" means the underwriting agreement dated 10 November 2025 between the Issuer, the Guarantor and the Underwriters.

**16** / 16

## Exhibit 8.1

**Exhibit 8.1**

---

| | |
|:---|:---|
|  | Advocaten<br> Notarissen<br> Belastingadviseurs |
| <br> ![](tm2530154d4_ex8-1img01.jpg)  | <br> ![](tm2530154d4_ex8-1img01.jpg)  |
| To the Issuer (as defined below) | Burgerweeshuispad 201<br> P.O. Box 75084<br> 1070 AB Amsterdam<br>T +31 20 577 1771<br> F +31 20 577 1775<br>|

---

---

| | | |
|:---|:---|:---|
| Date 13 November 2025 | Date 13 November 2025 | Henk van Ravenhorst<br> E Henk.vanravenhorst@debrauw.com<br> T +31 20 577 1930 (direct)<br> T +31 20 577 1654 (secretary) |
| | | Henk van Ravenhorst<br> E Henk.vanravenhorst@debrauw.com<br> T +31 20 577 1930 (direct)<br> T +31 20 577 1654 (secretary) |
| Our ref. | 20750692 | Henk van Ravenhorst<br> E Henk.vanravenhorst@debrauw.com<br> T +31 20 577 1930 (direct)<br> T +31 20 577 1654 (secretary) |
|  |  | Henk van Ravenhorst<br> E Henk.vanravenhorst@debrauw.com<br> T +31 20 577 1930 (direct)<br> T +31 20 577 1654 (secretary) |
| Re: | | |
| Dear Sir/Madam, | Dear Sir/Madam, | Dear Sir/Madam, |

---

**LYB International Finance III, LLC (the "Issuer")<br> USD 500,000,000 5.125% Guaranteed Notes due 2031**

**USD 1,000,000,000 5.875 % Guaranteed Notes due 2036**

**(the "Notes")**

---

| | |
|:---|:---|
| **1** | **Introduction** |

---

I act as Dutch tax adviser to the Issuer in connection with the Registration.

Certain terms used in this opinion are defined in the **Annex** (*Definitions*).

---

| | |
|:---|:---|
| **2** | **Dutch Law** |

---

This opinion is limited to Dutch law in effect on the date of this opinion. It (including all terms used in it) is to be construed in accordance with Dutch law.

---

| | |
|:---|:---|
| **3** | **Scope of Inquiry** |

---

I have examined the following documents:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) a copy of the Registration Statement including
 the Prospectus Supplement; and

De Brauw Blackstone Westbroek N.V., Amsterdam, is registered with the Trade Register in the Netherlands under no. 27171912.

All services and other work are carried out under an agreement of instruction ("overeenkomst van opdracht") with De Brauw Blackstone Westbroek N.V. The agreement is subject to the General Conditions, which have been filed with the register of the District Court in Amsterdam and contain a limitation of liability.

![](tm2530154d4_ex8-1img01.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) a copy of the Current Report.

---

| | |
|:---|:---|
| **4** | **Assumptions** |

---

I have made the following assumptions:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) each copy document conforms to the original
 and each original is genuine and complete; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) the documents listed in paragraph 3 have
 been or will be filed with the SEC in the form referred to in this opinion.

---

| | |
|:---|:---|
| **5** | **Opinion** |

---

Based on the documents referred to and assumptions made in paragraphs ‎3 and ‎4 and subject to any matters not disclosed to me, I am of the following opinion:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**5.1** The statements in the Prospectus
 Supplement under the heading "Material Dutch Tax Considerations", to the extent
 that they are statements as to Dutch Tax law, are correct.

---

| | |
|:---|:---|
| **6** | **reliance** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**6.1** This opinion is an exhibit to the
 Current Report and may be relied upon by Gibson, Dunn & Crutcher LLP for the purpose
 of the Registration. It may not be supplied, and its contents or existence may not be disclosed,
 to any person other than as an exhibit to (and therefore together with) the Current Report
 and may not be relied upon for any purpose other than the Registration.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**6.2** By accepting this opinion, each
 person accepting this opinion agrees that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) only De Brauw (and not any other person)
 will have any liability in connection with this opinion;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) De Brauw's liability in connection with
 this opinion is limited to the amount that is paid out in the specific case under De Brauw's
 professional liability insurance, increased by the applicable deductible (*eigen risico*);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) the agreement in this paragraph ‎6
 and all liability and other matters relating to this opinion will be governed exclusively
 by Dutch law and the Dutch courts will have exclusive jurisdiction to settle any dispute
 relating to it;

**2** / 5

![](tm2530154d4_ex8-1img01.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) this opinion may be signed with an electronic
 signature. This has the same effect as if signed with a handwritten signature; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) the agreements in this paragraph ‎6
 apply in addition to, and do not set aside, De Brauw's terms and conditions of business.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**6.3** The Issuer may:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) file this opinion as an exhibit to the
 Current Report; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) refer to De Brauw giving this opinion
 under the heading "9.01 Financial Statements and Exhibits" in the Current Report.

The previous sentence is no admittance from me (or De Brauw) that I am (or De Brauw is) in the category of persons whose consent for the filing and reference as set out in that sentence is required under Section 7 of the Securities Act or any rules or regulations of the SEC promulgated under it.

*(signature page follows)*

**3** / 5

![](tm2530154d4_ex8-1img01.jpg)

---

| |
|:---|
| Yours faithfully,<br> De Brauw Blackstone Westbroek N.V. |
| /s/ Henk van Ravenhorst |
| **Henk van Ravenhorst** |

---

**4** / 5

![](tm2530154d4_ex8-1img01.jpg)

**Annex – Definitions**

In this opinion:

"**Current Report**" means the Issuer's current report on Form 8-K dated 13 November 2025, reporting the issue of the Notes (excluding any documents incorporated by reference into the report and any exhibits to the report).

"**De Brauw**" means De Brauw Blackstone Westbroek N.V.

"**Dutch law**" means the law directly applicable in the Netherlands.

"**Dutch Tax**" means any taxes of any nature levied by or on behalf of the Netherlands or any of its subdivisions or taxing authorities.

"**Issuer**" means LYB International Finance III, LLC, with seat in Delaware, United States of America.

"**Notes**" means each of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) the USD 500,000,000 5.125% Guaranteed Notes issued by the Issuer due 2031; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) the USD 1,000,000,000 5.875% Guaranteed Notes issued by the Issuer due 2036

"**Prospectus Supplement**" means the prospectus supplement dated<br> 10 November 2025 for the Notes.

"**Registration**" means the registration by the Issuer of the Notes with the SEC under the Securities Act.

"**Registration Statement**" means the registration statement on Form S-3 dated 12 December 2024, as amended and supplemented, and relating to the registration by the Issuer of the Notes under the Securities Act (including the Prospectus Supplement, but excluding any documents incorporated by reference in it and any exhibits to it).

"**SEC**" means the U.S. Securities and Exchange Commission.

"**Securities Act**" means the U.S. Securities Act of 1933, as amended.

"**the Netherlands**" means the part of the Netherlands located in Europe.

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