MERC

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 18

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,206,540

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 17

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,170,825

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 16

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,170,540

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 15

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,134,540

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 14

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,108,602

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 13

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,072,602

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 12

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,036,602

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 24

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 646,000

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 11

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 1,000,000

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 10

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 993,840

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 9

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 993,490

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 8

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 974,840

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 7

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 969,300

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 6

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 950,300

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 5

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 933,300

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 4

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 916,300

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 3

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 874,522

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 2

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 866,822

SEC source: 0001104659-25-119790 · tm2530391-1_4seq1.xml · nonDerivative · entry 1

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 863,700

SEC source: 0001205450-25-000001 · primary_doc.xml · nonDerivative · entry 1

WELTY LINDA J · CIK 0001205450 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,290

SEC source: 0001848174-25-000002 · primary_doc.xml · nonDerivative · entry 1

Laberge Alice · CIK 0001848174 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,065

SEC source: 0001848174-25-000001 · primary_doc.xml · nonDerivative · entry 1

Laberge Alice · CIK 0001848174 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,065

SEC source: 0001104659-25-070127 · tm2521601-1_4seq1.xml · nonDerivative · entry 1

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Spouse

Disclosed balance after: 2,300,000

SEC source: 0001104659-26-025706 · tm268454-1_4seq1.xml · nonDerivative · entry 1

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Peter and Cynthia Kellogg Foundation

Disclosed balance after: 1,000,000

SEC source: 0001927186-25-000002 · primary_doc.xml · nonDerivative · entry 1

BUENO ESTRADA JUAN CARLOS · CIK 0001927186 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,615

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 5

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 860,000

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 4

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 851,100

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 3

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 838,900

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 9

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Bermuda Partners

Disclosed balance after: 2,000,000

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 8

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Bermuda Partners

Disclosed balance after: 1,969,371

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 2

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 826,600

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 1

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Non Marital PRK Trust

Disclosed balance after: 807,003

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 7

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Bermuda Partners

Disclosed balance after: 1,968,200

SEC source: 0001104659-25-066671 · tm2520235-1_4seq1.xml · nonDerivative · entry 6

KELLOGG PETER R · CIK 0000897485 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Via Bermuda Partners

Disclosed balance after: 1,931,600

SEC source: 0001333274-25-000006 · primary_doc.xml · nonDerivative · entry 1

Rettig Rainer · CIK 0001804365 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,396

F1 · shares: Represents a restricted stock award by Mercer International Inc. ("Mercer") to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). These shares vest on the earlier of the one-year anniversary of the grant date or the date of the 2026 AGM

SEC source: 0001333274-25-000009 · primary_doc.xml · derivative · entry 1

CORRICK THOMAS KEVIN · CIK 0001607859 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,008

Underlying: Common Stock · 27,933 shares

Expires not disclosed

F1 · security: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.exercise_price: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · kind: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · shares: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · price: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.exercise_date: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.expiration_date: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.underlying: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.underlying_shares: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

SEC source: 0001333274-25-000011 · primary_doc.xml · nonDerivative · entry 1

von Pentz Markwart · CIK 0001411741 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,933

F1 · shares: Represents a restricted stock award by Mercer International Inc. ("Mercer") to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). These shares vest on the earlier of the one-year anniversary of the grant date or the date of the 2026 AGM.

SEC source: 0001260893-25-000001 · primary_doc.xml · derivative · entry 1

MCCARTNEY WILLIAM · CIK 0001260893 · Director · Chairperson

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,906

Underlying: Common Stock · 46,090 shares

Expires not disclosed

F1 · security: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.exercise_price: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · kind: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · shares: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · price: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.exercise_date: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.expiration_date: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.underlying: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.underlying_shares: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer") as a grant to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2025 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

SEC source: 0001333274-25-000008 · primary_doc.xml · derivative · entry 1

WELTY LINDA J · CIK 0001205450 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,181

Underlying: Common Stock · 27,933 shares

Expires not disclosed

F1 · security: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.exercise_price: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · kind: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · shares: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · price: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.exercise_date: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.expiration_date: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.underlying: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

F1 · derivative.underlying_shares: Represents deferred stock units ("DSUs") issued by Mercer International Inc. ("Mercer) as a grant to the Reporting Person under Mercer's non-employee director compensation program and Amended and Restated 2022 Stock Incentive Plan in connection with his role as a director and Chairperson of Mercer's board of directors and in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). Each DSU vests on the earlier of the one year anniversary of the grant date or the date of the 2026 AGM and represents the right to receive one share of Mercer's common stock and dividend equivalents after the Reporting Person ceases to be a director of Mercer, unless deferred in accordance with its terms.

SEC source: 0001333274-25-000007 · primary_doc.xml · nonDerivative · entry 1

Wallace Alan C. · CIK 0001742623 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,901

F1 · shares: Represents a restricted stock award by Mercer International Inc. ("Mercer") to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). These shares vest on the earlier of the one-year anniversary of the grant date or the date of the 2026 AGM.

SEC source: 0001333274-25-000005 · primary_doc.xml · derivative · entry 1

North Janine · CIK 0001848169 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,289.3

Underlying: Common Stock · 27,933 shares

Expires not disclosed

F1 · security: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.exercise_price: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · kind: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · shares: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · price: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.exercise_date: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.expiration_date: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.underlying: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.underlying_shares: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

SEC source: 0001260893-25-000003 · primary_doc.xml · derivative · entry 1

Laberge Alice · CIK 0001848174 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,085

Underlying: Common Stock · 27,933 shares

Expires not disclosed

F1 · security: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.exercise_price: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · kind: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · shares: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · price: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.exercise_date: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.expiration_date: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

F1 · derivative.underlying_shares: 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 May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 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 2026 AGM.

SEC source: 0001260893-25-000002 · primary_doc.xml · nonDerivative · entry 1

Shepherd James · CIK 0001522288 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,471

F1 · shares: Represents a restricted stock award by Mercer International Inc. ("Mercer") to the Reporting Person under Mercer's non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan in respect of the board term commencing May 31, 2025 and ending at its next regularly scheduled annual general meeting in 2026 (the "2026 AGM"). These shares vest on the earlier of the one-year anniversary of the grant date or the date of the 2026 AGM.

SEC source: 0001943969-25-000001 · primary_doc.xml · nonDerivative · entry 1

Merforth Carsten · CIK 0001943969 · COO, Wood Products

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,651

SEC source: 0001967255-25-000001 · primary_doc.xml · nonDerivative · entry 2

BECK WOLFGANG · CIK 0001967255 · Sr. VP, Global Wood Sourcing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,054

SEC source: 0001967255-25-000001 · primary_doc.xml · nonDerivative · entry 1

BECK WOLFGANG · CIK 0001967255 · Sr. VP, Global Wood Sourcing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,463

SEC source: 0001333274-25-000004 · primary_doc.xml · nonDerivative · entry 1

Laberge Alice · CIK 0001848174 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,065

SEC source: 0001331804-24-000001 · primary_doc.xml · nonDerivative · entry 2

Heine Eric Xavier · CIK 0001331804 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,330

SEC source: 0001331804-24-000001 · primary_doc.xml · nonDerivative · entry 1

Heine Eric Xavier · CIK 0001331804 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,485

SEC source: 0001927186-24-000002 · primary_doc.xml · nonDerivative · entry 1

BUENO ESTRADA JUAN CARLOS · CIK 0001927186 · Director · CEO & President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,615