Mercer International Inc.
DE ˙ DB ˙ US5880561015
0,73 € ↓ -0,01 (-0,82%)
2026-06-04
DEL PRIS
SecurityDE:AEZ / Mercer International Inc.
InstitutionWhitebox Advisors Llc
Latest Disclosed Ownership1,057,658 shares
Latest Disclosed Value $ 1,501,874
Whitebox Advisors Llc reports 54.17% increase in ownership of AEZ / Mercer International Inc.

On May 15, 2026 - Whitebox Advisors Llc filed a 13F-HR form disclosing ownership of 1,057,658 shares of Mercer International Inc. (DE:AEZ) valued at $1,300,919 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 686,019 shares of Mercer International Inc.. This represents a change in shares of 54.17% during the quarter. The current value of the position is $772,090 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MERCER INTL COM 588056101 1,057,658 371,639 54.17 1,502 10.53 0.0185
2026-02-17 2025-12-31 13F MERCER INTL COM 588056101 686,019 150,000 27.98 1,358 -11.99 0.0193
2025-11-14 2025-09-30 13F MERCER INTL COM 588056101 536,019 96,596 21.98 1,544 0.39 0.0239
2025-08-14 2025-06-30 13F MERCER INTL COM 588056101 439,423 180,409 69.65 1,538 -3.45 0.0327
2025-05-15 2025-03-31 13F MERCER INTL COM 588056101 259,014 -25,000 -8.80 1,593 -13.76 0.0411
2025-02-14 2024-12-31 13F MERCER INTL COM 588056101 284,014 30,000 11.81 1,846 7.39 0.0533
2024-11-14 2024-09-30 13F MERCER INTL COM 588056101 254,014 80,000 45.97 1,720 15.68 0.0469
2024-08-14 2024-06-30 13F MERCER INTL COM 588056101 174,014 4,556 2.69 1,486 -11.86 0.0425
2024-05-15 2024-03-31 13F MERCER INTL COM 588056101 169,458 105,433 164.67 1,686 178.22 0.0419
2024-02-14 2023-12-31 13F MERCER INTL COM 588056101 64,025 24,638 62.55 607 79.82 0.0166
2023-11-14 2023-09-30 13F MERCER INTL COM 588056101 39,387 -50,000 -55.94 338 -53.26 0.0107
2023-08-14 2023-06-30 13F MERCER INTL COM 588056101 89,387 10,000 12.60 721 -7.09 0.0196
2023-05-15 2023-03-31 13F MERCER INTL COM 588056101 79,387 5,000 6.72 776 -10.29 0.0266
2023-02-14 2022-12-31 13F MERCER INTL COM 588056101 74,387 12,000 19.23 866 12.78 0.0239
2022-11-14 2022-09-30 13F MERCER INTL COM 588056101 62,387 0 0.00 767 -6.46 0.0213
2022-08-15 2022-06-30 13F MERCER INTL COM 588056101 62,387 -500 -0.80 820 -6.50 0.0253
2022-05-16 2022-03-31 13F MERCER INTL COM 588056101 62,887 -27,573 -30.48 877 -19.17 0.0177
2022-02-14 2021-12-31 13F MERCER INTL COM 588056101 90,460 90,460 1,085 0.0221
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.