Mercer director granted 25,000 cash-settled DSUs

Rettig Rainer reported acquisition or exercise transactions in this Form 4 filing.

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Form Type

Rhea-AI Filing Summary

Rettig Rainer reported acquisition or exercise transactions in this Form 4 filing.

Mercer International director Rainer Rettig received a grant of 25,000 cash-settled deferred stock units (DSUs) as non-employee director compensation. Each DSU is tied to the fair market value of one Mercer common share and pays out in cash after he ceases to be a director, unless further deferred. The DSUs vest on the earlier of the one-year anniversary of the June 2026 grant or the 2027 annual general meeting, covering his board term starting June 1, 2026.

Insider Trade Summary

Grant/Award: 25,000 shares

Grant/Award 1 txn

Insider Rettig Rainer

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Cash Settled Deferred Stock Units	25,000	$0.00	$0.00

Holdings After Transaction: Cash Settled Deferred Stock Units — 25,000 contracts (Direct)

Footnotes (1)

F1. Represents cash settled deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer"), as a grant to the Reporting Person, at the election of the Reporting Person as an equity grant under Mercer's non-employee director compensation program in respect of the board term commencing June 1, 2026 and ending at its next regularly scheduled annual general meeting in 2027 (the "2027 AGM"). Each DSU represents the right to receive a cash payment equal to the fair market value of one share of Mercer's common stock on the redemption date(s) and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms. These DSUs vest on the earlier of the one-year anniversary of the grant date or the date of the 2027 AGM.

Key Figures

DSUs granted: 25,000 units Exercise price: $0.0000 per unit Units outstanding after grant: 25,000 units +1 more

4 metrics

DSUs granted 25,000 units Cash-settled deferred stock units granted June 2026

Exercise price $0.0000 per unit Grant/award acquisition with no purchase price

Units outstanding after grant 25,000 units Total DSUs held following this transaction

Underlying common shares 25,000 shares reference Each DSU linked to one Mercer common share for value

Key Terms

Deferred Stock Units, non-employee director compensation program, fair market value, dividend equivalents, +1 more

5 terms

Deferred Stock Units financial

"Represents cash settled deferred stock units ("DSUs") issued by Mercer International Inc."

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

non-employee director compensation program financial

"as an equity grant under Mercer's non-employee director compensation program in respect of the board term"

fair market value financial

"Each DSU represents the right to receive a cash payment equal to the fair market value of one share"

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

dividend equivalents financial

"and dividend equivalents after the Reporting Person ceases to be a director of Mercer"

Payments tied to employee or contractor equity awards that mirror the cash dividends paid on the company’s stock; they give the holder the same economic benefit as owning the shares without transferring actual shares—often paid in cash or additional award units when the award becomes payable. Investors care because these payments affect a company’s compensation costs, cash flow and potential share dilution, and they signal how management is being rewarded and aligned with shareholders.

annual general meeting financial

"ending at its next regularly scheduled annual general meeting in 2027 (the "2027 AGM")"

FAQ

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

What insider transaction did MERC director Rainer Rettig report on this Form 4?

Rainer Rettig reported receiving 25,000 cash-settled deferred stock units as director compensation. The grant is linked to his board term beginning June 1, 2026 and represents a non-cash equity-based award rather than an open-market share purchase or sale.

How many deferred stock units did MERC grant to director Rainer Rettig?

Mercer granted Rainer Rettig 25,000 deferred stock units. Each unit references one share of Mercer common stock for value, providing cash settlement based on fair market value after his board service ends, subject to the plan’s vesting and deferral terms.

Are Rainer Rettig’s MERC deferred stock units settled in cash or shares?

The deferred stock units are settled in cash, not shares. Each DSU entitles Rettig to a cash payment equal to the fair market value of one Mercer common share on redemption, plus dividend equivalents, after he ceases to be a director.

When do Rainer Rettig’s MERC deferred stock units vest?

The DSUs vest on the earlier of the one-year anniversary of the grant date or the 2027 annual general meeting. This schedule aligns the vesting with Rettig’s non-employee director board term running from June 1, 2026 until the 2027 meeting.

What period of service does this MERC DSU grant cover for Rainer Rettig?

The grant covers Rettig’s board term commencing June 1, 2026 and ending at Mercer’s next regularly scheduled annual general meeting in 2027. The DSUs are part of Mercer’s non-employee director compensation program for that specific service period.

Do Rainer Rettig’s MERC deferred stock units receive dividend equivalents?

Yes, the DSUs receive dividend equivalents. Each unit provides the right to dividend equivalents and a cash amount equal to the fair market value of one Mercer common share on redemption after Rettig ceases to be a director, unless further deferred.

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

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Accepted by SEC EDGAR 06/02/2026 - 08:30 PM EDT

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^*

Rettig Rainer

(Last)

(First)

(Middle)

SUITE 1120, 700 WEST PENDER STREET

(Street)

VANCOUVER

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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Cash Settled Deferred Stock Units⁽¹⁾	⁽¹⁾	06/02/2026		A⁽¹⁾		25,000⁽¹⁾		⁽¹⁾	⁽¹⁾	Common Stock⁽¹⁾	25,000⁽¹⁾	⁽¹⁾	25,000	D

Explanation of Responses:

1. Represents cash settled deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer"), as a grant to the Reporting Person, at the election of the Reporting Person as an equity grant under Mercer's non-employee director compensation program in respect of the board term commencing June 1, 2026 and ending at its next regularly scheduled annual general meeting in 2027 (the "2027 AGM"). Each DSU represents the right to receive a cash payment equal to the fair market value of one share of Mercer's common stock on the redemption date(s) and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms. These DSUs vest on the earlier of the one-year anniversary of the grant date or the date of the 2027 AGM.

	/s/Rainer Rettig	06/02/2026
	** 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)

Source: View Original Filing on SEC EDGAR