Mercer International Inc.
Mercer International Inc. (MERC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MERC · as of Sep 30, 2025
Ownership Breakdown
95
Institutional Holders
▼ 19 vs Q2
$139.13M
Total Inst. Value
▼ $44.44M vs Q2
66.98M
Shares Outstanding
freeFloat 57.56%
48.18M
13F Shares Held
▼ 4.17M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MERC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
IAT REINSURANCE CO LTD. pulp mills | 16.70M | 24.96% | 24.96% | $48.10B | Nov 10, 2025 | ▲ 220.0K |
REDWOOD CAPITAL MANAGEMENT, LLC pulp mills | 4.65M | 6.95% | 6.95% | $13.39B | Nov 14, 2025 | ▲ 1.28M |
TORONTO DOMINION BANK pulp mills | 3.30M | 4.93% | 4.93% | $9.50B | Nov 14, 2025 | — held |
ATLAS FRM LLC pulp mills | 3.15M | 4.71% | 4.71% | $9.07B | Nov 13, 2025 | — held |
DIMENSIONAL FUND ADVISORS LP pulp mills | 3.03M | 4.53% | 4.53% | $8.74B | Nov 12, 2025 | ▼ 212.4K |
READYSTATE ASSET MANAGEMENT LP pulp mills | 2.37M | 3.54% | 3.54% | $6.82B | Nov 7, 2025 | ▼ 53.8K |
SOLAS CAPITAL MANAGEMENT, LLC pulp mills | 1.65M | 2.47% | 2.47% | $4.75B | Nov 14, 2025 | ▼ 25.1K |
WELLS FARGO & COMPANY/MN pulp mills | 1.19M | 1.78% | 1.78% | $3.43B | Nov 13, 2025 | ▼ 96.4K |
AMERICAN CENTURY COMPANIES INC pulp mills | 1.14M | 1.70% | 1.70% | $3.27B | Nov 12, 2025 | ▲ 89.4K |
D. E. SHAW & CO., INC. pulp mills | 1.04M | 1.55% | 1.55% | $3.00B | Nov 14, 2025 | ▲ 478.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
21
Increased
+3.65M shares2
New Positions
first time holders21
Decreased
−2.57M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.08M
+3.65M / −2.57M
Net new holders
+2
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MERC insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
24
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Ridder Wolfram Senior VP, Innovation & Gov. | Jun 4, 2026 | Award | 18,665 | — | — | 18.7K | Form 4 ↗ |
BECK WOLFGANG Senior VP Global Wood Sourcing | Jun 4, 2026 | Award | 12,967 | — | — | 13.0K | Form 4 ↗ |
Short Richard George CFO & Secretary | Jun 4, 2026 | Award | 31,504 | — | — | 31.5K | Form 4 ↗ |
ARGUIN GUY Chief Human Resources Officer | Jun 4, 2026 | Award | 13,612 | — | — | 13.6K | Form 4 ↗ |
STANNUS GENEVIEVE VP, Treasurer | Jun 4, 2026 | Award | 8,583 | — | — | 8.6K | Form 4 ↗ |
Heine Eric Xavier VP Sales, Marketing& Logistics | Jun 4, 2026 | Award | 10,750 | — | — | 10.8K | Form 4 ↗ |
ALEKSON CYNTHIA MARGARET VP, Controller | Jun 4, 2026 | Award | 7,188 | — | — | 7.2K | Form 4 ↗ |
Merforth Carsten COO, Wood Products | Jun 4, 2026 | Award | 26,764 | — | — | 26.8K | Form 4 ↗ |
Koppensteiner Adolf COO, Pulp Products | Jun 4, 2026 | Award | 30,505 | — | — | 30.5K | Form 4 ↗ |
BUENO ESTRADA JUAN CARLOS CEO & President | Jun 4, 2026 | Award | 126,808 | — | — | 126.8K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Mercer International Inc. (MERC) is primarily owned by institutional investors, who hold approximately 71.9% of total shares outstanding. Company insiders own approximately 42.44%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Mercer International Inc. is IAT REINSURANCE CO LTD., holding approximately 16.70 million shares — equal to 24.96% of outstanding shares — as of September 30, 2025.
A total of 95 institutional investors currently hold MERC stock, with a combined institutional value of approximately $139,133,209 as of the most recent 13F filing period.
Frequently asked questions
MERC ownershipMercer International Inc. (MERC) is primarily owned by institutional investors, who hold approximately 71.9% of shares. The largest shareholder is IAT REINSURANCE CO LTD. with a 24.96% stake. Company insiders hold 42.44%. Data sourced from SEC Form 13F as of September 30, 2025.