Gran Tierra Energy (GTE) investors disclose over 13% stakes in amended 13G filing

Rhea-AI Filing Summary

Gran Tierra Energy Inc. is the subject of an amended Schedule 13G filing (Amendment No. 5) by Daniel Lau, Christine Man, LM Asset Management Inc., LM Asset Fund Limited Partnership, and LM Asset General Partner Ltd. These reporting persons state they are filing jointly but each expressly disclaims membership in a group and beneficial ownership beyond their pecuniary interest. Based on 35,380,429 shares of common stock outstanding as of August 5, 2026, Daniel Lau reports beneficial ownership of 4,812,420 shares (13.6%), and Christine Man 4,637,970 shares (13.1%). LM Asset Management Inc. reports 4,365,420 shares (12.3%), the Partnership 2,847,800 shares (8.1%), and the General Partner 3,648,020 shares (10.3%). Voting and dispositive power is split between limited sole power and substantial shared power across these entities, reflecting control relationships among the advisers and funds.

Key Figures

Shares outstanding: 35,380,429 shares Daniel Lau beneficial ownership: 4,812,420 shares (13.6%) Christine Man beneficial ownership: 4,637,970 shares (13.1%) +3 more

6 metrics

Shares outstanding 35,380,429 shares Common Stock outstanding as of August 5, 2026

Daniel Lau beneficial ownership 4,812,420 shares (13.6%) GTE Common Stock beneficially owned as reported in Item 4

Christine Man beneficial ownership 4,637,970 shares (13.1%) GTE Common Stock beneficially owned as reported in Item 4

LM Asset Management Inc. ownership 4,365,420 shares (12.3%) Beneficial ownership with shared voting and dispositive power

LM Asset Fund LP ownership 2,847,800 shares (8.1%) Beneficial ownership with shared voting and dispositive power

LM Asset General Partner Ltd. ownership 3,648,020 shares (10.3%) Beneficial ownership with mix of sole and shared powers

Key Terms

Schedule 13G, beneficial ownership, sole voting power, shared dispositive power, +1 more

5 terms

Schedule 13G regulatory

"Exhibit 99.1 - Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G"

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 financial

"Each reporting person also disclaims beneficial ownership of the Common Stock"

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.

sole voting power financial

"Sole Voting Power 240,000.00 6 | Shared Voting Power 4,572,420.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

shared dispositive power financial

"Shared Dispositive Power 4,572,420.00 9 4,812,420.00"

pecuniary interest financial

"except to the extent of that reporting person's pecuniary interest therein"

FAQ

What ownership stake in GTE does Daniel Lau report in this Schedule 13G/A?

Daniel Lau reports beneficial ownership of 4,812,420 Gran Tierra Energy (GTE) shares, representing 13.6% of the common stock, based on 35,380,429 shares outstanding as of August 5, 2026.

How many Gran Tierra Energy (GTE) shares does Christine Man beneficially own?

Christine Man reports beneficial ownership of 4,637,970 GTE common shares, equal to 13.1% of the class, calculated using 35,380,429 shares outstanding as of August 5, 2026.

What is LM Asset Management Inc.’s reported position in Gran Tierra Energy (GTE)?

LM Asset Management Inc. reports beneficial ownership of 4,365,420 GTE shares, or 12.3% of the common stock, with 4,365,420 shares subject to shared voting and shared dispositive power.

What percentage of Gran Tierra Energy (GTE) does LM Asset Fund Limited Partnership hold?

LM Asset Fund Limited Partnership reports beneficial ownership of 2,847,800 GTE common shares, representing 8.1% of the outstanding class, all under shared voting and shared dispositive power.

Do the GTE reporting persons file as a group in this Schedule 13G/A?

The reporting persons state they are filing jointly but each expressly disclaims membership in a group and disclaims beneficial ownership of GTE common stock beyond their pecuniary interest.

What is the total GTE share count used to calculate the ownership percentages?

All reported ownership percentages are calculated using 35,380,429 Gran Tierra Energy common shares outstanding on August 5, 2026, as reported in the issuer’s Form 10-Q for the quarter ended June 30, 2026.

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Available on EDGAR 08/12/2026 - 07:16 PM Accepted by SEC EDGAR 08/12/2026 - 07:15 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 5)

GRAN TIERRA ENERGY INC.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

38500T200

(CUSIP Number)

06/30/2026

(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): 38500T200

1

Names of Reporting Persons

Daniel Lau

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

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 240,000.00
6	Shared Voting Power 4,572,420.00
7	Sole Dispositive Power 240,000.00
8	Shared Dispositive Power 4,572,420.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,812,420.00

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)

13.6 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: Percentage calculated based on 35,380,429 shares of Common Stock outstanding on August 5, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2026.

SCHEDULE 13G

CUSIP Number(s): 38500T200

1

Names of Reporting Persons

Christine Man

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

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 65,550.00
6	Shared Voting Power 4,572,420.00
7	Sole Dispositive Power 65,550.00
8	Shared Dispositive Power 4,572,420.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,637,970.00

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)

13.1 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: Percentage calculated based on 35,380,429 shares of Common Stock outstanding on August 5, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2026.

SCHEDULE 13G

CUSIP Number(s): 38500T200

1

Names of Reporting Persons

LM Asset Management Inc.

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

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,365,420.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,365,420.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,365,420.00

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)

12.3 %

12

Type of Reporting Person (See Instructions)

IA, CO

Comment for Type of Reporting Person: Percentage calculated based on 35,380,429 shares of Common Stock outstanding on August 5, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2026.

SCHEDULE 13G

CUSIP Number(s): 38500T200

1

Names of Reporting Persons

LM Asset Fund Limited Partnership

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

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,847,800.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,847,800.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,847,800.00

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)

8.1 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: Percentage calculated based on 35,380,429 shares of Common Stock outstanding on August 5, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2026.

SCHEDULE 13G

CUSIP Number(s): 38500T200

1

Names of Reporting Persons

LM Asset General Partner Ltd.

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

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 40,000.00
6	Shared Voting Power 3,608,020.00
7	Sole Dispositive Power 40,000.00
8	Shared Dispositive Power 3,608,020.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,648,020.00

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)

10.3 %

12

Type of Reporting Person (See Instructions)

CO

Comment for Type of Reporting Person: Percentage calculated based on 35,380,429 shares of Common Stock outstanding on August 5, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: GRAN TIERRA ENERGY INC.
(b)	Address of issuer's principal executive offices: 500 CENTRE STREET SE CALGARY, ALBERTA, CANADA T2G 1A6
Item 2.
(a)	Name of person filing: Daniel Lau Christine Man LM Asset Management Inc. LM Asset Fund Limited Partnership (the "Partnership") LM Asset General Partner Ltd. (the "General Partner") The reporting persons are filing this statement jointly, but not as members of a group. Each reporting person expressly disclaims membership in a group. Each reporting person also disclaims beneficial ownership of the Common Stock except to the extent of that reporting person's pecuniary interest therein.
(b)	Address or principal business office or, if none, residence: 1640 - 1055 West Hastings Street, Vancouver, BC, Canada, V6E 2E9
(c)	Citizenship: For citizenship of Filers, see Item 4 of the cover sheet for each Filer.
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 38500T200
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: Daniel Lau: 4,812,420 Christine Man: 4,637,970 LM Asset Management Inc.: 4,365,420 Partnership: 2,847,800 General Partner: 3,648,020
(b)	Percent of class: Daniel Lau: 13.6% Christine Man: 13.1% LM Asset Management Inc.: 12.3% Partnership: 8.1% General Partner: 10.3%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Daniel Lau: 240,000 Christine Man: 65,550 LM Asset Management Inc.: 0 Partnership: 0 General Partner: 40,000
	(ii) Shared power to vote or to direct the vote: Daniel Lau: 4,572,420 Christine Man: 4,572,420 LM Asset Management Inc.: 4,365,420 Partnership: 2,847,800 General Partner: 3,608,020
	(iii) Sole power to dispose or to direct the disposition of: Daniel Lau: 240,000 Christine Man: 65,550 LM Asset Management Inc.: 0 Partnership: 0 General Partner: 40,000
	(iv) Shared power to dispose or to direct the disposition of: Daniel Lau: 4,572,420 Christine Man: 4,572,420 LM Asset Management Inc.: 4,365,420 Partnership: 2,847,800 General Partner: 3,608,020
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. Mr. Lau and Ms. Man are the control persons of LM Asset Management Inc. and other investment advisers to private investment funds, including the Partnership, and other accounts. The General Partner is the general partner of the Partnership. Those investment advisers, funds and accounts have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, Common Stock. However, no individual fund or account other than the Partnership beneficially owns more than five percent of the outstanding Common Stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
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 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.

Daniel Lau

Signature:	/s/ Daniel Lau
Name/Title:	Reporting person
Date:	08/12/2026

Christine Man

Signature:	/s/ Christine Man
Name/Title:	Reporting person
Date:	08/12/2026

LM Asset Management Inc.

Signature:	/s/ Daniel Lau
Name/Title:	Director
Date:	08/12/2026

LM Asset Fund Limited Partnership

Signature:	/s/ Daniel Lau
Name/Title:	Director of the General Partner of the Partnership
Date:	08/12/2026

LM Asset General Partner Ltd.

Signature:	/s/ Daniel Lau
Name/Title:	Director
Date:	08/12/2026

Exhibit Information

Exhibit 99.1 - Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G