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Whitebox Advisors LLC and Whitebox General Partner LLC report beneficial ownership of Mercer International Inc. common stock. They are deemed to beneficially own 3,590,350 shares of common stock, representing 5.4% of the outstanding class, based on 67,018,033 shares outstanding as of August 4, 2026.
The Whitebox entities have shared voting and dispositive power over these 3,590,350 shares and no sole voting or dispositive power. The shares are held for clients of Whitebox Advisors, who have the right to receive dividends and sale proceeds from these securities.
Key Figures
Beneficially owned shares:3,590,350 sharesPercent of class:5.4%Shares outstanding:67,018,033 shares+2 more
5 metrics
Beneficially owned shares3,590,350 sharesShares of Mercer International common stock deemed beneficially owned by each reporting person
Percent of class5.4%Portion of Mercer common stock outstanding deemed beneficially owned
Shares outstanding67,018,033 sharesMercer common shares outstanding as of August 4, 2026
Shared voting power3,590,350 sharesShares over which the reporting persons have shared power to vote or direct the vote
Shared dispositive power3,590,350 sharesShares over which the reporting persons have shared power to dispose or direct disposition
Key Terms
beneficial owner, shared voting power, shared dispositive power, Percent of class, +1 more
5 terms
beneficial ownerfinancial
"each of WA and WGP is deemed to be the beneficial owner of 3,590,350 shares"
A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.
shared voting powerfinancial
"Shared Voting Power 3,590,350.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
shared dispositive powerfinancial
"Shared Dispositive Power 3,590,350.00"
Percent of classfinancial
"each of WA and WGP is deemed to beneficially own approximately 5.4% of the shares"
Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.
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.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What stake in Mercer International Inc. (MERC) do the Whitebox entities report?
Whitebox Advisors LLC and Whitebox General Partner LLC report beneficial ownership of 3,590,350 Mercer common shares, representing 5.4% of the outstanding common stock, held on behalf of clients who receive dividends and sale proceeds.
How was the 5.4% ownership in MERC calculated by Whitebox?
The 5.4% ownership was calculated using 67,018,033 Mercer common shares outstanding as of August 4, 2026, as reported in Mercer’s quarterly report referenced by the reporting persons.
Do Whitebox Advisors LLC and Whitebox General Partner LLC control voting of MERC shares?
They report shared voting power over 3,590,350 Mercer shares and no sole voting power, meaning voting decisions are shared, consistent with their role managing assets for clients.
Who benefits economically from the MERC shares held by Whitebox’s clients?
Whitebox states that its clients have the right to receive dividends and sale proceeds from the 3,590,350 Mercer shares that may be deemed beneficially owned by the reporting persons.
What type of Mercer security do the Whitebox entities hold?
The holdings consist of Common Stock of Mercer International Inc., with a $1.00 par value per share, identified by CUSIP number 588056101, and are beneficially owned through Whitebox’s clients.
Do Whitebox entities have sole dispositive power over MERC shares?
They report no sole dispositive power and shared dispositive power over 3,590,350 Mercer shares, meaning decisions to sell or dispose are made on a shared basis for client accounts.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
MERCER INTERNATIONAL INC.
(Name of Issuer)
Common Stock, par value $1.00 per share
(Title of Class of Securities)
588056101
(CUSIP Number)
08/07/2026
(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):
588056101
1
Names of Reporting Persons
WHITEBOX ADVISORS LLC
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
3,590,350.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
3,590,350.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,590,350.00
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)
5.4 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
588056101
1
Names of Reporting Persons
WHITEBOX GENERAL PARTNER LLC
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
3,590,350.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
3,590,350.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,590,350.00
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)
5.4 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
MERCER INTERNATIONAL INC.
(b)
Address of issuer's principal executive offices:
Suite 1120, 700 West Pender Street, Vancouver, British Columbia, Canada, V6C 1G8
Item 2.
(a)
Name of person filing:
This statement is filed by:
(i) Whitebox Advisors LLC, a Delaware limited liability company ("WA"); and
(ii) Whitebox General Partner LLC, a Delaware limited liability company ("WGP" and, together with WA, the "Reporting Persons").
(b)
Address or principal business office or, if none, residence:
The address of the business office of WA and WGP is:
3033 Excelsior Boulevard
Suite 500
Minneapolis, MN 55416
(c)
Citizenship:
WA and WGP are organized under the laws of the State of Delaware.
(d)
Title of class of securities:
Common Stock, par value $1.00 per share
(e)
CUSIP Number(s):
588056101
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:
As of the date hereof, each of WA and WGP is deemed to be the beneficial owner of 3,590,350 shares of Common Stock, as a result of WA's clients' ownership of 3,590,350 shares of Common Stock.
(b)
Percent of class:
As of the date hereof, each of WA and WGP is deemed to beneficially own approximately 5.4% of the shares of Common Stock outstanding.
Percent of class was calculated based on 67,018,033 shares of Common Stock outstanding as of August 4, 2026, as reported in the Issuer's quarterly report on Form 10-Q filed with the Securities and Exchange Commission on August 6, 2026.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
WA and WGP: 0
(ii) Shared power to vote or to direct the vote:
WA and WGP: 3,590,350
(iii) Sole power to dispose or to direct the disposition of:
WA and WGP: 0
(iv) Shared power to dispose or to direct the disposition of:
WA and WGP: 3,590,350
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.
WA's clients are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock covered by this Statement that may be deemed to be beneficially owned by the Reporting Persons.
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.
