Weyerhaeuser Company
US ˙ NYSE ˙ US9621661043

SecurityWY / Weyerhaeuser Company
InstitutionMarathon Capital Management
Latest Disclosed Ownership55,035 shares
Latest Disclosed Value $ 1,344,505
Marathon Capital Management reports 11.07% increase in ownership of WY / Weyerhaeuser Company

On May 14, 2026 - Marathon Capital Management filed a 13F-HR form disclosing ownership of 55,035 shares of Weyerhaeuser Company (US:WY) valued at $1,344,505 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 49,548 shares of Weyerhaeuser Company. This represents a change in shares of 11.07% during the quarter. The current value of the position is $1,347,257 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F WEYERHAEUSER COM NEW 962166104 55,035 5,487 11.07 1,345 14.58 0.3020
2026-01-29 2025-12-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 49,548 -18,368 -27.05 1,174 -30.30 0.2526
2025-11-14 2025-09-30 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 67,916 14,010 25.99 1,684 21.60 0.3853
2025-08-14 2025-06-30 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 53,906 -218 -0.40 1,385 -12.63 0.3527
2025-05-15 2025-03-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 54,124 -562 -1.03 1,585 2.92 0.4221
2025-02-14 2024-12-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 54,686 -3,900 -6.66 1,539 -22.39 0.3845
2024-11-14 2024-09-30 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 58,586 -600 -1.01 1,984 18.04 0.4809
2024-08-14 2024-06-30 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 59,186 -2,750 -4.44 1,680 -24.46 0.4282
2024-05-15 2024-03-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 61,936 0 0.00 2,224 3.30 0.5307
2024-02-14 2023-12-31 13F/A-1 WEYERHAEUSER CO MTN BE COM NEW 962166104 61,936 -3,000 -4.62 2,154 8.19 0.5413
2024-02-08 2023-12-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 61,936 -3,000 2,154 0.5413
2023-11-14 2023-09-30 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 64,936 -25 -0.04 1,991 -8.55 0.5010
2023-08-15 2023-06-30 13F/A-1 WEYERHAEUSER CO MTN BE COM NEW 962166104 64,961 7,045 12.16 2,177 24.70 0.5373
2023-08-14 2023-06-30 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 64,961 7,045 2,177 0.5273
2023-05-12 2023-03-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 57,916 -300 -0.52 1,745 -3.27 0.4294
2023-02-14 2022-12-31 13F WEYERHAEUSER CO MTN BE COM NEW 962166104 58,216 0 0.00 1,805 8.48 0.4974
2022-11-14 2022-09-30 13F Weyerhaeuser COM NEW 962166104 58,216 -590 -1.00 1,663 -14.63 0.4751
2022-08-12 2022-06-30 13F Weyerhaeuser COM NEW 962166104 58,806 -1,134 -1.89 1,948 -14.26 0.6293
2022-05-13 2022-03-31 13F Weyerhaeuser COM NEW 962166104 59,940 121 0.20 2,272 -7.75 0.6522
2022-02-09 2021-12-31 13F Weyerhaeuser COM NEW 962166104 59,819 -1,179 -1.93 2,463 13.50 0.5772
2021-11-15 2021-09-30 13F Weyerhaeuser COM NEW 962166104 60,998 -350 -0.57 2,170 2.79 0.4926
2021-08-16 2021-06-30 13F Weyerhaeuser COM NEW 962166104 61,348 -2,474 -3.88 2,111 -7.09 0.4887
2021-05-14 2021-03-31 13F Weyerhaeuser COM NEW 962166104 63,822 3,386 5.60 2,272 12.14 0.5990
2021-02-08 2020-12-31 13F Weyerhaeuser COM NEW 962166104 60,436 -2,675 -4.24 2,026 12.62 0.5972
2020-11-16 2020-09-30 13F Weyerhaeuser COM NEW 962166104 63,111 -3,112 -4.70 1,799 20.98 0.6549
2020-08-14 2020-06-30 13F Weyerhaeuser COM NEW 962166104 66,223 327 0.50 1,487 33.24 0.5712
2020-05-15 2020-03-31 13F Weyerhaeuser COM 962166104 65,896 2,020 3.16 1,116 -42.15 0.5124
2020-02-14 2019-12-31 13F Weyerhaeuser COM 962166104 63,876 275 0.43 1,929 9.48 0.6560
2019-11-13 2019-09-30 13F Weyerhaeuser COM 962166104 63,601 3,065 5.06 1,762 10.54 0.7106
2019-07-25 2019-06-30 13F Weyerhaeuser COM 962166104 60,536 663 1.11 1,594 1.08 0.6501
2019-05-15 2019-03-31 13F Weyerhaeuser COM 962166104 59,873 46,575 350.24 1,577 443.79 0.7043
2019-02-07 2018-12-31 13F Weyerhaeuser COM 962166104 13,298 -41,047 -75.53 290 -82.78 0.1439
2016-05-13 2016-03-31 13F Weyerhaeuser EQ 962166104 54,345 54,345 1,684 0.8716
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.