Timberland Bancorp, Inc.
US ˙ NasdaqGM ˙ US8870981011

SecurityTSBK / Timberland Bancorp, Inc.
InstitutionRBF Capital, LLC
Latest Disclosed Ownership20,416 shares
Latest Disclosed Value $ 805,003
RBF Capital, LLC ownership in TSBK / Timberland Bancorp, Inc.

On May 18, 2026 - RBF Capital, LLC filed a 13F-HR/A form disclosing ownership of 20,416 shares of Timberland Bancorp, Inc. (US:TSBK) valued at $805,003 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 20,416 shares of Timberland Bancorp, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $849,101 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)
2026-05-18 2026-03-31 13F/A-1 TIMBERLAND BANCORP COM 887098101 20,416 0 0.00 805 10.27 0.0394
2026-05-14 2026-03-31 13F TIMBERLAND BANCORP COM 887098101 20,416 0 805 0.0421
2026-02-17 2025-12-31 13F/A-1 TIMBERLAND BANCORP COM 887098101 20,416 0 0.00 731 7.51 0.0324
2026-02-17 2025-12-31 13F TIMBERLAND BANCORP COM 887098101 20,416 0 731 0.0324
2025-11-14 2025-09-30 13F TIMBERLAND BANCORP COM 887098101 20,416 0 0.00 679 6.76 0.0303
2025-08-14 2025-06-30 13F TIMBERLAND BANCORP COM 887098101 20,416 0 0.00 637 3.41 0.0303
2025-05-15 2025-03-31 13F TIMBERLAND BANCORP COM 887098101 20,416 0 0.00 616 -1.13 0.0370
2025-02-14 2024-12-31 13F TIMBERLAND BANCORP COM 887098101 20,416 -1,522 -6.94 623 -6.18 0.0322
2024-11-14 2024-09-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 664 11.62 0.0333
2024-08-14 2024-06-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 594 0.68 0.0342
2024-05-15 2024-03-31 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 591 -14.49 0.0330
2024-02-14 2023-12-31 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 690 16.16 0.0417
2023-11-14 2023-09-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 595 5.88 0.0391
2023-08-14 2023-06-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 561 -5.24 0.0350
2023-05-16 2023-03-31 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 593 -20.96 0.0431
2023-02-14 2022-12-31 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 749 23.39 0.0563
2022-11-14 2022-09-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 607 10.77 0.0511
2022-08-15 2022-06-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 548 -9.42 0.0381
2022-05-16 2022-03-31 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 605 -0.49 0.0387
2022-02-14 2021-12-31 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 608 -4.10 0.0374
2021-11-15 2021-09-30 13F TIMBERLAND BANCORP COM 887098101 21,938 0 0.00 634 2.76 0.0354
2021-08-16 2021-06-30 13F TIMBERLAND BANCORP COM 887098101 21,938 21,938 617 0.0345
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.