Mercer CEO granted 126,808 restricted stock units

BUENO ESTRADA JUAN CARLOS reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

BUENO ESTRADA JUAN CARLOS reported acquisition or exercise transactions in this Form 4 filing.

Mercer International Inc. reported that CEO and President Juan Carlos Bueno Estrada received a grant of 126,808 restricted stock units. These units were awarded as equity-based compensation, not bought on the open market.

Each restricted stock unit represents the right to receive one share of Mercer common stock, or the cash value of a share at the company’s election. The units vest on January 1, 2029, assuming he continues his service with the company, and his reported direct holdings in this award total 126,808 units after the grant.

Insider Trade Summary

Grant/Award: 126,808 shares

Grant/Award 1 txn

Insider BUENO ESTRADA JUAN CARLOS

Role CEO & President

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	126,808	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 126,808 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: 126,808 units Grant price: 0.0000 per unit Underlying common shares: 126,808 shares +2 more

5 metrics

RSUs granted 126,808 units Restricted stock unit grant to CEO on June 4, 2026

Grant price 0.0000 per unit Compensation award, not open-market purchase

Underlying common shares 126,808 shares Each unit represents right to one common share or cash

Post-grant RSU holdings 126,808 units Total restricted stock units reported following transaction

Vesting date January 1, 2029 Units vest subject to continued service to Mercer

Key Terms

Restricted Stock Units, contingent right, vest, cash value

4 terms

Restricted Stock Units financial

"Each restricted stock unit represents a contingent right to receive one share of Mercer International Inc. common stock"

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

"Each restricted stock unit represents a contingent right to receive one share of Mercer International Inc. common stock"

vest financial

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

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.

cash value financial

"or, at the company's election, the cash value thereof."

Cash value is the amount of money you could get right away if an asset or contract were converted to cash or surrendered, after any fees or penalties. Think of it like the cash you could pull out of a savings jar when you need it; for investors it signals how much immediate liquidity or recoverable worth exists in an investment, insurance policy, or balance-sheet item.

FAQ

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

What did Mercer (MERC) CEO Juan Carlos Bueno Estrada report in this Form 4?

He reported receiving 126,808 restricted stock units as equity compensation. These units are not open-market purchases but a grant that can convert into Mercer common stock or cash if service-based vesting conditions are met by January 1, 2029.

How many Mercer (MERC) restricted stock units were granted to the CEO?

The CEO was granted 126,808 restricted stock units. Each unit represents a contingent right to receive one share of Mercer common stock, or its cash value, if the vesting conditions are satisfied on January 1, 2029.

When do Juan Carlos Bueno Estrada’s Mercer (MERC) restricted stock units vest?

The restricted stock units vest on January 1, 2029. Vesting is contingent on his continued service to Mercer International Inc. through that date, aligning the long-term incentive with ongoing leadership and company performance over several years.

Are the CEO’s new Mercer (MERC) restricted stock units an immediate share issuance?

No, the grant is not an immediate share issuance. Each restricted stock unit is a future right to receive one share of common stock, or equivalent cash, only after vesting on January 1, 2029, subject to continued employment conditions.

Does this Mercer (MERC) Form 4 show the CEO buying or selling stock in the market?

It does not show market buying or selling. The filing records a compensation-related grant of restricted stock units at a reported price of zero, rather than open-market transactions, so it mainly reflects long-term incentive alignment, not trading activity.

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

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Accepted by SEC EDGAR 06/05/2026 - 01:44 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^*

BUENO ESTRADA JUAN CARLOS

(Last) (First) (Middle)

SUITE 1120

700 WEST PENDER STREET

(Street)

VANCOUVER V6C1G8

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO & President

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		126,808(1)		(1)	(2)	Common Stock	126,808	$0	126,808	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/Juan Carlos Bueno	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)