Mercer COO granted 26,764 restricted stock units

Merforth Carsten reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Merforth Carsten reported acquisition or exercise transactions in this Form 4 filing.

Mercer International Inc. reported that COO, Wood Products, Carsten Merforth received a grant of restricted stock units. He was awarded 26,764 restricted stock units, each representing a contingent right to receive one share of Mercer common stock or, at the company’s election, the cash value.

The restricted stock units vest on January 1, 2029, subject to his continued service with Mercer. Following this compensation-related award, Merforth holds 26,764 restricted stock units directly, and the filing shows no open-market purchases or sales associated with this Form 4.

Insider Trade Summary

Grant/Award: 26,764 shares

Grant/Award 1 txn

Insider Merforth Carsten

Role COO, Wood Products

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	26,764	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 26,764 contracts (Direct)

Footnotes (2)

1. F1. Each restricted stock unit represents a contingent right to receive one share of Mercer International Inc. ("Mercer") common stock, or, at the company's election, the cash value thereof. The restricted stock units vest on January 1, 2029 subject to the Reporting Person's continued service to Mercer.
2. F2. Not applicable.

Key Figures

RSUs granted: 26,764 units Underlying common stock: 26,764 shares Vesting date: January 1, 2029 +2 more

5 metrics

RSUs granted 26,764 units Restricted stock units awarded to COO, Wood Products

Underlying common stock 26,764 shares Each RSU corresponds to one Mercer common share

Vesting date January 1, 2029 RSUs vest subject to continued service

Price per RSU $0.0000 Grant/award, no purchase price paid by insider

RSUs after transaction 26,764 units Total restricted stock units held following grant

Key Terms

Restricted Stock Units, contingent right, vest, continued service

4 terms

Restricted Stock Units financial

"Each restricted stock unit represents a contingent right to receive one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"represents a contingent right to receive one share of Mercer International Inc."

vest financial

"The restricted stock units vest on January 1, 2029 subject to the Reporting Person's continued service"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

continued service financial

"vest on January 1, 2029 subject to the Reporting Person's continued service to Mercer"

FAQ

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

What insider transaction did MERCER INTERNATIONAL INC. (MERC) report for Carsten Merforth?

MERCER INTERNATIONAL INC. reported that COO, Wood Products, Carsten Merforth received a grant of 26,764 restricted stock units. These units are a form of equity compensation that can settle in Mercer common stock or, at the company’s election, the cash value of those shares.

How many restricted stock units were granted to Mercer (MERC) executive Carsten Merforth?

Carsten Merforth was granted 26,764 restricted stock units. Each unit represents a contingent right to receive one share of Mercer common stock or its cash value, providing long-term incentive compensation aligned with the company’s performance and his continued service to Mercer International Inc.

When do Carsten Merforth’s restricted stock units at Mercer (MERC) vest?

The restricted stock units granted to Carsten Merforth vest on January 1, 2029. Vesting is conditioned on his continued service to Mercer International Inc., meaning he must remain with the company through that date to receive the underlying shares or their cash equivalent.

Do the restricted stock units granted to Carsten Merforth involve immediate cash or stock at Mercer (MERC)?

The restricted stock units do not provide immediate cash or stock. Each unit is a contingent right that may convert into one share of Mercer common stock or the cash value thereof in the future, subject to vesting on January 1, 2029 and continued service conditions.

Did Carsten Merforth buy or sell Mercer (MERC) shares in this Form 4 filing?

The Form 4 shows a grant of restricted stock units to Carsten Merforth, not an open-market purchase or sale. It records an acquisition of 26,764 derivative units as compensation, with no reported share sales or market trades associated with this particular filing event.

What does each restricted stock unit represent in the Mercer (MERC) Form 4 for Carsten Merforth?

Each restricted stock unit represents a contingent right to receive one share of Mercer common stock, or at Mercer’s election, the cash value of that share. This structure gives the company flexibility in settlement while tying Merforth’s compensation to future company performance and service.

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

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Accepted by SEC EDGAR 06/05/2026 - 02:01 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Merforth Carsten

(Last) (First) (Middle)

SUITE 1120 - 700 WEST PENDER STREET

(Street)

VANCOUVER BRITISH COLUMBIA V6C 1G8

(City) (State) (Zip)

BRITISH COLUMBIA, CANADA

(Country)

2. Issuer Name and Ticker or Trading Symbol
MERCER INTERNATIONAL INC. [ MERC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	COO, Wood Products

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	06/04/2026		A		26,764(1)		(1)	(2)	Common Stock	26,764	$0	26,764	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of Mercer International Inc. ("Mercer") common stock, or, at the company's election, the cash value thereof. The restricted stock units vest on January 1, 2029 subject to the Reporting Person's continued service to Mercer.

2. Not applicable.

	/s/Carsten Merforth	06/05/2026
	** Signature of Reporting Person	Date
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)