STOCK TITAN

Major MERC holder Peter R. Kellogg adds 419,743 Mercer (MERC) shares in open‑market buys

Filing Impact
(Moderate)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Mercer International Inc. ten percent owner Peter R. Kellogg reported a series of open-market purchases of Common Stock in early June 2026. He bought a total of 419,743 shares at prices between about $0.79 and $0.93 per share.

Following these purchases, Kellogg directly owns 1,385,672 Common shares. He also reports substantial indirect holdings through various entities, including 13,475,000 shares held via IAT Insurance Co. Ltd. and other positions via partnerships, insurance companies, trusts, foundations, and his spouse.

Positive

  • None.

Negative

  • None.
Insider KELLOGG PETER R
Role null
Bought 419,743 shs ($363K)
Type Security Shares Price Value
Purchase Common Stock 36,000 $0.9306 $34K
Purchase Common Stock 1,210 $0.9047 $1K
Purchase Common Stock 200 $0.9085 $181.70
Purchase Common Stock 14,031 $0.91 $13K
Purchase Common Stock 136,000 $0.8599 $117K
Purchase Common Stock 36,000 $0.8243 $30K
Purchase Common Stock 23,637 $0.7938 $19K
Purchase Common Stock 34,733 $0.7984 $28K
Purchase Common Stock 36,000 $0.8498 $31K
Purchase Common Stock 36,000 $0.8894 $32K
Purchase Common Stock 1,047 $0.9155 $958.53
Purchase Common Stock 16,000 $0.8984 $14K
Purchase Common Stock 36,000 $0.8992 $32K
Purchase Common Stock 2,731 $0.8987 $2K
Purchase Common Stock 10,154 $0.9094 $9K
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Holdings After Transaction: Common Stock — 1,370,231 shares (Direct, null); Common Stock — 1,957,000 shares (Indirect, Via Harco)
Footnotes (1)
Total shares bought 419,743 shares Open-market purchases in early June 2026
Direct holdings after trades 1,385,672 shares Common Stock held directly after June 12, 2026
Purchase price range $0.7938–$0.9306 per share Individual trade prices disclosed for June 2026 buys
Largest single-day buy 136,000 shares at $0.8599 Open-market purchase on June 11, 2026
Indirect holding via IAT Insurance 13,475,000 shares Common Stock held indirectly via IAT Insurance Co. Ltd.
Indirect holding via spouse 2,300,000 shares Common Stock held indirectly via spouse
open-market purchase financial
"transaction_action": "open-market purchase""
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
ten percent owner financial
""is_ten_percent_owner": 1"
indirect ownership financial
""ownership_type": "indirect""
Common Stock financial
""security_title": "Common Stock""
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
Form 4 regulatory
"INSIDER FILING DATA (Form 4)"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
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FAQ

What insider transactions did Peter R. Kellogg report for MERC in June 2026?

Peter R. Kellogg reported multiple open‑market purchases of Mercer International Common Stock in early June 2026, buying 419,743 shares total at prices around $0.79–$0.93 per share, according to his Form 4 filing.

How many Mercer (MERC) shares does Peter R. Kellogg now hold directly?

After the reported June 2026 purchases, Peter R. Kellogg directly holds 1,385,672 shares of Mercer International Common Stock. These are separate from additional, sizable indirect holdings he reports through various entities and related parties in the same Form 4.

What was the total size of Peter R. Kellogg’s recent MERC share purchases?

The Form 4 shows Kellogg bought 419,743 Mercer shares in open‑market transactions. These trades occurred across several days in early June 2026 at per‑share prices mostly below $0.93, based on the transaction detail in the filing.

Over what price range did Peter R. Kellogg buy Mercer (MERC) shares?

Kellogg’s June 2026 Mercer purchases were executed between roughly $0.79 and $0.93 per share. Individual transactions in the Form 4 list specific prices such as $0.7938, $0.8243, $0.8599, $0.8992, $0.9094, and $0.9306.

What indirect holdings in Mercer (MERC) does Peter R. Kellogg report?

Beyond his direct shares, Kellogg reports large indirect holdings in Mercer through entities such as IAT Insurance Co. Ltd. (13,475,000 shares), Bermuda Partners, his spouse, several insurance companies, trusts, foundations, and corporate entities listed in the Form 4.

Is Peter R. Kellogg a ten percent owner of Mercer International (MERC)?

Yes. The Form 4 identifies Peter R. Kellogg as a ten percent owner of Mercer International Inc. This status reflects his combined direct and indirect holdings in the company’s Common Stock as disclosed in the filing.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
KELLOGG PETER R

(Last)(First)(Middle)
48 WALL STREET C/O IAT INSURANCE CO. LTD

(Street)
NEW YORK NEW YORK 10005

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
MERCER INTERNATIONAL INC. [ MERC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/01/2026P16,000A$0.8984981,929D
Common Stock06/01/2026P36,000A$0.89921,017,929D
Common Stock06/01/2026P2,731A$0.89871,020,660D
Common Stock06/01/2026P10,154A$0.90941,030,814D
Common Stock06/02/2026P1,047A$0.91551,031,861D
Common Stock06/04/2026P36,000A$0.88941,067,861D
Common Stock06/05/2026P36,000A$0.84981,103,861D
Common Stock06/08/2026P34,733A$0.79841,138,594D
Common Stock06/09/2026P23,637A$0.79381,162,231D
Common Stock06/10/2026P36,000A$0.82431,198,231D
Common Stock06/11/2026P136,000A$0.85991,334,231D
Common Stock06/12/2026P36,000A$0.93061,370,231D
Common Stock06/12/2026P1,210A$0.90471,371,441D
Common Stock06/12/2026P200A$0.90851,371,641D
Common Stock06/12/2026P14,031A$0.911,385,672D
Common Stock1,957,000IVia Harco
Common Stock253,000IVia E.G. Anderson Inc.
Common Stock1,000,000IVia Peter and Cynthia Kellogg Foundation
Common Stock1,360,000IVia Non Marital PRK Trust
Common Stock2,300,000IVia Spouse
Common Stock2,000,000IVia Bermuda Partners
Common Stock10,000IVia Cardia Company Inc.
Common Stock13,475,000IVia IAT Insurance Co. Ltd.
Common Stock10,000IVia C. Kellogg & P Kellogg TTEE U/W Charles A Kirkland Trust
Common Stock35,000IVia the Myth and Barnegat Restoration Society, Inc.
Common Stock10,000IVia C. Kellogg & P Kellogg TTEE U/W Anne Kirkland Trust
Common Stock100,000IVia Acceptance Casualty
Common Stock225,000IVia Acceptance Indemnity
Common Stock630,000IVia Wilshire
Common Stock540,000IVia Transguard
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Marguerite Gorman, attorney-in-fact07/08/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)