Mercer International's three largest insider shareholders as of September 29, 2026 are Peter R Kellogg (TenPercentOwner, 2.30Mn shares), Peter R Kellogg (TenPercentOwner, 2.21Mn shares), Peter R Kellogg (TenPercentOwner, 2.00Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Jimmy S H Lee | Executive Chairman | 3,835,185 | 0 | 3,835,185 | 53.6% | 16 Feb, 2023 |
| 2 | Peter R Kellogg | TenPercentOwner | 1,385,672 | 0 | 1,385,672 | 19.4% | 08 Jul, 2026 |
| 3 | David M Gandossi | Ceo And President | 198,211 | 0 | 198,211 | 2.8% | 16 Feb, 2022 |
| 4 | James Shepherd | Director | 192,089 | 0 | 192,089 | 2.7% | 02 Jun, 2026 |
| 5 | Leonhard Nossol | Group Controller For Europe | 165,294 | 0 | 165,294 | 2.3% | 16 Feb, 2024 |
| 6 | Wolfram Ridder | Vp Of Business Development | 138,929 | 0 | 138,929 | 1.9% | 16 Feb, 2024 |
| 7 | David Kent Ure | Senior Vice President, Finance | 138,380 | 0 | 138,380 | 1.9% | 16 Feb, 2023 |
| 8 | Keith Purchase | Director | 137,356 | 0 | 137,356 | 1.9% | 02 May, 2023 |
| 9 | William Mccartney | Director | 113,650 | 0 | 113,650 | 1.6% | 02 Jun, 2023 |
| 10 | Brian Merwin | Senior Vp, Mass Timber | 106,371 | 0 | 106,371 | 1.5% | 16 Feb, 2024 |
| 11 | Adolf Koppensteiner | Coo, Pulp Products | 105,415 | 0 | 105,415 | 1.5% | 16 Feb, 2024 |
| 12 | Rainer Rettig | Director | 97,289 | 0 | 97,289 | 1.4% | 03 Jun, 2025 |
| 13 | Alan C. Wallace | Director | 91,869 | 0 | 91,869 | 1.3% | 03 Jun, 2025 |
| 14 | Richard George Short | Cfo And Secretary | 91,717 | 0 | 91,717 | 1.3% | 06 Sep, 2024 |
| 15 | Genevieve Stannus | Vp, Treasurer | 79,148 | 0 | 79,148 | 1.1% | 16 Feb, 2024 |
| 16 | Estrada Juan Carlos Bueno | President Ceo | 75,615 | 0 | 75,615 | 1.1% | 13 Jun, 2025 |
| 17 | Eric Xavier Heine | Vice President | 61,840 | 0 | 61,840 | 0.9% | 22 Nov, 2024 |
| 18 | Linda J Welty | Director | 36,290 | 0 | 36,290 | 0.5% | 18 Aug, 2025 |
| 19 | Wolfgang Beck | Sr. Vp, Global Wood Sourcing | 35,054 | 0 | 35,054 | 0.5% | 09 May, 2025 |
| 20 | Pentz Markwart Von | Director | 27,933 | 0 | 27,933 | 0.4% | 03 Jun, 2025 |
| 21 | Carsten Merforth | Coo, Wood Products | 22,651 | 0 | 22,651 | 0.3% | 10 May, 2025 |
| 22 | Janine North | Director | 11,743 | 2,000 | 13,743 | 0.2% | 11 Sep, 2024 |
| 23 | Cynthia Margaret Alekson | Vp, Controller | 2,637 | 0 | 2,637 | 0.0% | 16 Feb, 2024 |
| 24 | Alice Laberge | Director | 0 | 2,000 | 2,000 | 0.0% | 27 Feb, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 01 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 16,000 | $0.90 | $14.37K | 981,929 | Direct |
| 01 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 36,000 | $0.90 | $32.37K | 1,017,929 | Direct |
| 01 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 2,731 | $0.90 | $2.45K | 1,020,660 | Direct |
| 01 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 10,154 | $0.91 | $9.23K | 1,030,814 | Direct |
| 02 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 1,047 | $0.92 | $959 | 1,031,861 | Direct |
| 04 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 36,000 | $0.89 | $32.02K | 1,067,861 | Direct |
| 05 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 36,000 | $0.85 | $30.59K | 1,103,861 | Direct |
| 08 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 34,733 | $0.80 | $27.73K | 1,138,594 | Direct |
| 09 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 23,637 | $0.79 | $18.76K | 1,162,231 | Direct |
| 10 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 36,000 | $0.82 | $29.67K | 1,198,231 | Direct |
| 11 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 136,000 | $0.86 | $116.95K | 1,334,231 | Direct |
| 12 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 36,000 | $0.93 | $33.50K | 1,370,231 | Direct |
| 12 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 1,210 | $0.90 | $1.09K | 1,371,441 | Direct |
| 12 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 200 | $0.91 | $182 | 1,371,641 | Direct |
| 12 Jun, 2026 | Peter R Kellogg | TenPercentOwner | Acquired P | 14,031 | $0.91 | $12.77K | 1,385,672 | Direct |
| 04 Jun, 2026 | Genevieve Stannus | Vp, Treasurer | Acquired A | 8,583 | $0.00 | $0 | 8,583 | Direct |
| 04 Jun, 2026 | Adolf Koppensteiner | Coo, Pulp Products | Acquired A | 30,505 | $0.00 | $0 | 30,505 | Direct |
| 04 Jun, 2026 | Wolfram Ridder | Senior Vp, Innovation Gov. | Acquired A | 18,665 | $0.00 | $0 | 18,665 | Direct |
| 04 Jun, 2026 | Wolfgang Beck | Senior Vp Global Wood Sourcing | Acquired A | 12,967 | $0.00 | $0 | 12,967 | Direct |
| 04 Jun, 2026 | Eric Xavier Heine | Vp Sales, Marketing Logistics | Acquired A | 10,750 | $0.00 | $0 | 10,750 | Direct |