Wellington reports 5.82% stake in Methanex

Methanex Corporation Schedule 13G reports that Wellington Management-affiliated entities beneficially own 4,503,858 shares of Methanex common stock, representing 5.82% of the class as of 03/31/2026.

Rhea-AI Filing Summary

Methanex Corporation Schedule 13G reports that Wellington Management-affiliated entities beneficially own 4,503,858 shares of Methanex common stock, representing 5.82% of the class as of 03/31/2026. The filing lists shared voting power of 3,171,291 shares and identifies the chain of Wellington parent and adviser entities responsible for the holdings.

The statement clarifies these securities are owned of record by clients of Wellington investment advisers and that no single client is known to hold more than 5% separately. Signatures are dated 05/15/2026.

Insights

Institutional Ownership Analyst

Wellington holds a meaningful passive stake in Methanex via client accounts.

Wellington-affiliated entities report shared dispositive control over 4,503,858 shares and shared voting power over 3,171,291 shares as of 03/31/2026. The filing is a routine disclosure of beneficial ownership under Schedule 13G.

Impact depends on client trading decisions and advisory discretion; subsequent filings may show ownership changes or conversions to Schedule 13D if activist intent arises.

Regulatory Compliance Specialist

The filing follows passive-investor disclosure conventions and lists the relevant subsidiary/adviser structure.

The cover identifies Wellington Management Group LLP and related holding/adviser entities and states the securities are owned of record by clients of Wellington Investment Advisers. The form notes no client is known to exceed 5% ownership separately.

Filers provide signature and dates; investors should watch future ownership statements for material changes or conversion to active-filer status.

Key Figures

Beneficial ownership: 4,503,858 shares Percent of class: 5.82% Shared voting power: 3,171,291 shares +4 more

7 metrics

Beneficial ownership 4,503,858 shares reported as beneficially owned

Percent of class 5.82% percent of common stock as stated in Item 4(b)

Shared voting power 3,171,291 shares shared power to vote per cover responses

Shared dispositive power 4,503,858 shares shared power to dispose per cover responses

Reporting date 03/31/2026 ownership as of date at top of filing

Signature date 05/15/2026 filing signed by Compliance Manager

CUSIP 59151K108 Methanex common stock

Key Terms

Schedule 13G, Beneficial ownership, Shared dispositive power, Investment adviser (IA)

4 terms

Schedule 13G regulatory

"Name of form at top identifying passive beneficial ownership"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficial ownership regulatory

"Amount beneficially owned: See the responses to Item 9"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Shared dispositive power regulatory

"Shared Dispositive Power 4,503,858.00"

Investment adviser (IA) regulatory

"Wellington Management Company LLP - IA listed among Wellington Investment Advisers"

An investment adviser (IA) is a person or firm that provides personalized guidance on buying, selling, or holding investments and often manages client portfolios for a fee. Investors should care because an IA has a legal duty to act in the client's best interest—think of them as a navigator who plans and steers your financial journey—so their advice, fee structure and potential conflicts can directly affect returns and financial risk.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does Wellington report in Methanex (MEOH)?

Wellington-affiliated entities report beneficial ownership of 4,503,858 shares, equal to 5.82% of Methanex common stock as of 03/31/2026. The shares are held of record by client accounts advised by Wellington.

Does any single Wellington client hold more than 5% of MEOH?

No single client is reported to hold more than 5% individually. The filing states clients of the Wellington advisers collectively own the disclosed shares and none is known to exceed 5% separately.

What voting and dispositive powers are reported by Wellington?

The filing shows shared voting power of 3,171,291 shares and shared dispositive power of 4,503,858 shares among the Wellington entities named on the cover pages.

Which Wellington entities are named on the Schedule 13G for MEOH?

The filing names Wellington Management Group LLP, Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP and lists related adviser subsidiaries in the ownership chain.

What dates are relevant in this Schedule 13G filing for MEOH?

The ownership position is stated as of 03/31/2026 and the signatures on the filing are dated 05/15/2026, reflecting the reporting period and filing execution date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 07:06 AM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Methanex Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

59151K108

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 59151K108

1

Names of Reporting Persons

Wellington Management Group LLP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,171,291.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,503,858.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,503,858.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 59151K108

1

Names of Reporting Persons

Wellington Group Holdings LLP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,171,291.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,503,858.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,503,858.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 59151K108

1

Names of Reporting Persons

Wellington Investment Advisors Holdings LLP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,171,291.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,503,858.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,503,858.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 59151K108

1

Names of Reporting Persons

Wellington Management Company LLP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,165,580.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,034,900.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,503,858.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.2 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Methanex Corporation
(b)	Address of issuer's principal executive offices: 200 Burrard Street, 1800 Waterfront Centre, Vancouver BC V6C 3L6
Item 2.
(a)	Name of person filing: Wellington Management Group LLP Wellington Group Holdings LLP Wellington Investment Advisors Holdings LLP Wellington Management Company LLP
(b)	Address or principal business office or, if none, residence: c/o Wellington Management Company LLP, 280 Congress Street, Boston MA 02210
(c)	Citizenship: Wellington Management Group LLP - Massachusetts Wellington Group Holdings LLP - Delaware Wellington Investment Advisors Holdings LLP - Delaware Wellington Management Company LLP - Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 59151K108
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: See the responses to Item 9 on the attached cover pages.
(b)	Percent of class: 5.82 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: See the responses to Item 6 on the attached cover pages.
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: See the responses to Item 8 on the attached cover pages.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The securities as to which this Schedule is filed are owned of record by clients of one or more investment advisers identified in Item 7 directly or indirectly owned by Wellington Management Group LLP. Those clients have the right to receive, or the power to direct the receipt of, dividends from, or the proceeds from the sale of, such securities. No such client is known to have such right or power with respect to more than five percent of this class of securities, except as follows: Not Applicable.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Pursuant to the instructions in Item 7 of Schedule 13G, the following lists the identity and Item 3 classification of each relevant entity that beneficially owns shares of the security class being reported on this Schedule 13G. Wellington Group Holdings LLP - HC Wellington Investment Advisors LLP - HC Wellington Management Global Holdings, Ltd. - HC One or more of the following investment advisers (the "Wellington Investment Advisers"): Wellington Management Company LLP - IA Wellington Management Canada LLC - IA Wellington Management Singapore Pte Ltd - IA Wellington Management Hong Kong Ltd - IA Wellington Management International Ltd - IA Wellington Management Japan Pte Ltd - IA Wellington Management Australia Pty Ltd - IA The securities as to which this Schedule is filed by Wellington Management Group LLP, as parent holding company of certain holding companies and the Wellington Investment Advisers, are owned of record by clients of the Wellington Investment Advisers. Wellington Investment Advisors Holdings LLP controls directly, or indirectly through Wellington Management Global Holdings, Ltd., the Wellington Investment Advisers. Wellington Investment Advisors Holdings LLP is owned by Wellington Group Holdings LLP. Wellington Group Holdings LLP is owned by Wellington Management Group LLP.
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Wellington Management Group LLP

Signature:	Matthew Revell
Name/Title:	Compliance Manager
Date:	05/15/2026

Wellington Group Holdings LLP

Signature:	Matthew Revell
Name/Title:	Compliance Manager
Date:	05/15/2026

Wellington Investment Advisors Holdings LLP

Signature:	Matthew Revell
Name/Title:	Compliance Manager
Date:	05/15/2026

Wellington Management Company LLP

Signature:	Matthew Revell
Name/Title:	Compliance Manager
Date:	05/15/2026