Waterstone Financial, Inc. SEC filings WSBF
Waterstone Financial, Inc. has 539 filings in SEC EDGAR's recent list, going back to Jun 7, 2013. Its latest annual report, Form ARS, was filed on Apr 9, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 16, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 144 | Notice of proposed sale | May 21, 2026 | — |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 144 | Notice of proposed sale | Feb 3, 2026 | — |
| 144 | Notice of proposed sale | Feb 2, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Oct 28, 2025 | Oct 27, 2025 |
| 144 | Notice of proposed sale | Oct 23, 2025 | — |
| 3 | Initial insider ownership | Oct 2, 2025 | Jul 22, 2025 |
| 3 | Initial insider ownership | Oct 2, 2025 | Jul 22, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 12, 2025 | Aug 11, 2025 |
| 4 | Insider transaction | Jul 28, 2025 | Jul 24, 2025 |
| 144 | Notice of proposed sale | Jul 22, 2025 | — |
| 144 | Notice of proposed sale | Jun 11, 2025 | — |
| 144 | Notice of proposed sale | May 29, 2025 | — |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 144 | Notice of proposed sale | Feb 28, 2025 | — |
| 144 | Notice of proposed sale | Feb 28, 2025 | — |
| 4 | Insider transaction | Feb 14, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 12, 2025 | Feb 11, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 144 | Notice of proposed sale | Feb 6, 2025 | — |
| 144 | Notice of proposed sale | Feb 5, 2025 | — |
| 4 | Insider transaction | Feb 3, 2025 | Jan 30, 2025 |
| 4 | Insider transaction | Feb 3, 2025 | Jan 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 31, 2025 | — |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 27, 2024 |
| 4 | Insider transaction | Nov 27, 2024 | Nov 25, 2024 |
| 4 | Insider transaction | Nov 25, 2024 | Nov 22, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 14, 2024 | Nov 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| 4 | Insider transaction | Nov 12, 2024 | Nov 11, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 8, 2024 | Nov 7, 2024 |
| 4 | Insider transaction | Nov 8, 2024 | Nov 7, 2024 |
| 144 | Notice of proposed sale | Nov 7, 2024 | — |
| 4 | Insider transaction | Nov 7, 2024 | Nov 6, 2024 |
| 144 | Notice of proposed sale | Nov 6, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| 4 | Insider transaction | Sep 16, 2024 | Sep 13, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 4, 2024 |
| 4 | Insider transaction | Sep 4, 2024 | Aug 30, 2024 |
| 144 | Notice of proposed sale | Aug 30, 2024 | — |
| 4 | Insider transaction | Aug 30, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 28, 2024 |
| 144 | Notice of proposed sale | Aug 28, 2024 | — |
| 4 | Insider transaction | Apr 25, 2024 | Apr 23, 2024 |
| 4 | Insider transaction | Apr 25, 2024 | Apr 23, 2024 |
| 4 | Insider transaction | Mar 19, 2024 | Jan 26, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| 3 | Initial insider ownership | Mar 8, 2024 | Apr 11, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2024 | — |
| 4 | Insider transaction | Oct 30, 2023 | Oct 26, 2023 |
| 3 | Initial insider ownership | Apr 7, 2023 | Apr 6, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2023 | — |
| 4 | Insider transaction | Mar 15, 2022 | Mar 14, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2022 | — |
| 4 | Insider transaction | Jan 3, 2022 | Dec 28, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 23, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 23, 2021 | Nov 19, 2021 |
| 4 | Insider transaction | Jun 7, 2021 | Jun 3, 2021 |
| 4 | Insider transaction | May 19, 2021 | May 17, 2021 |
| 4 | Insider transaction | Mar 10, 2021 | Mar 10, 2021 |
| 4 | Insider transaction | Mar 9, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 9, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 9, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 5, 2021 | Mar 3, 2021 |
| 4 | Insider transaction | Mar 5, 2021 | Mar 3, 2021 |
| 4 | Insider transaction | Mar 2, 2021 | Mar 1, 2021 |
| 4 | Insider transaction | Mar 2, 2021 | Mar 1, 2021 |
| 3 | Initial insider ownership | Feb 17, 2021 | Feb 16, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| 3 | Initial insider ownership | Feb 11, 2021 | Jan 26, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2021 | — |
| 5 | Annual insider ownership | Jan 11, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Dec 29, 2020 | Dec 28, 2020 |
| 4 | Insider transaction | Dec 29, 2020 | Dec 23, 2020 |
| 4 | Insider transaction | Nov 17, 2020 | Nov 16, 2020 |
| 4/A | Form 4/a | Nov 17, 2020 | Nov 11, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Nov 11, 2020 |
| 4 | Insider transaction | Jul 10, 2020 | Jul 8, 2020 |
| 4 | Insider transaction | Jul 10, 2020 | Jul 9, 2020 |
| 4 | Insider transaction | Mar 16, 2020 | Mar 13, 2020 |
| 4 | Insider transaction | Mar 6, 2020 | Mar 4, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 18, 2020 | Feb 13, 2020 |
| 4 | Insider transaction | Feb 13, 2020 | Feb 12, 2020 |
| 4 | Insider transaction | Feb 13, 2020 | Feb 3, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2020 | — |
| 4 | Insider transaction | Jun 25, 2019 | Jun 24, 2019 |
| 4 | Insider transaction | Jun 5, 2019 | Jun 3, 2019 |
| 4 | Insider transaction | May 28, 2019 | May 23, 2019 |
| 4 | Insider transaction | Mar 13, 2019 | Mar 12, 2019 |
| 4 | Insider transaction | Mar 8, 2019 | Mar 7, 2019 |
| 4 | Insider transaction | Mar 8, 2019 | Mar 7, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2019 | — |
| 4 | Insider transaction | Dec 18, 2018 | Dec 14, 2018 |
| 4/A | Form 4/a | Dec 17, 2018 | Dec 11, 2018 |
| 4 | Insider transaction | Dec 14, 2018 | Dec 11, 2018 |
| 4 | Insider transaction | Dec 4, 2018 | Nov 30, 2018 |
| 4 | Insider transaction | Sep 12, 2018 | Sep 11, 2018 |
| 4 | Insider transaction | Aug 20, 2018 | Aug 16, 2018 |
| 4 | Insider transaction | Aug 13, 2018 | Aug 10, 2018 |
| 4 | Insider transaction | Aug 9, 2018 | Aug 7, 2018 |
| 4 | Insider transaction | May 21, 2018 | May 16, 2018 |
| 4 | Insider transaction | May 10, 2018 | May 9, 2018 |
| 4 | Insider transaction | May 9, 2018 | May 8, 2018 |
| 4 | Insider transaction | May 3, 2018 | May 2, 2018 |
| 4 | Insider transaction | Apr 30, 2018 | Apr 26, 2018 |
| 4 | Insider transaction | Mar 7, 2018 | Mar 6, 2018 |
| 4 | Insider transaction | Mar 7, 2018 | Mar 6, 2018 |
| 4 | Insider transaction | Mar 7, 2018 | Feb 28, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2018 | — |
| 5 | Annual insider ownership | Jan 4, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Oct 26, 2017 | Oct 25, 2017 |
| 4 | Insider transaction | Jun 23, 2017 | Jun 22, 2017 |
| 4 | Insider transaction | Apr 21, 2017 | Apr 20, 2017 |
| 4 | Insider transaction | Apr 20, 2017 | Apr 19, 2017 |
| 4 | Insider transaction | Mar 29, 2017 | Mar 27, 2017 |
| 4 | Insider transaction | Mar 16, 2017 | Mar 15, 2017 |
| 4 | Insider transaction | Mar 13, 2017 | Mar 10, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 9, 2017 | — |
| 4 | Insider transaction | Mar 7, 2017 | Mar 6, 2017 |
| 4 | Insider transaction | Mar 7, 2017 | Mar 6, 2017 |
| 4 | Insider transaction | Mar 7, 2017 | Mar 6, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2017 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2017 | — |
| 4 | Insider transaction | Jan 5, 2017 | Jan 5, 2017 |
| 4 | Insider transaction | Jan 5, 2017 | Jan 5, 2017 |
| 4 | Insider transaction | Dec 15, 2016 | Dec 14, 2016 |
| 4 | Insider transaction | Dec 9, 2016 | Dec 7, 2016 |
| 4 | Insider transaction | Dec 6, 2016 | Dec 5, 2016 |
| 4 | Insider transaction | Nov 22, 2016 | Nov 21, 2016 |
| 4 | Insider transaction | Nov 21, 2016 | Nov 18, 2016 |
| 4 | Insider transaction | Sep 2, 2016 | Aug 31, 2016 |
| 4 | Insider transaction | Aug 25, 2016 | Aug 25, 2016 |
| 4 | Insider transaction | Aug 25, 2016 | Aug 24, 2016 |
| 4 | Insider transaction | Aug 25, 2016 | Aug 24, 2016 |
| 4 | Insider transaction | Aug 25, 2016 | Aug 23, 2016 |
| 4/A | Form 4/a | Aug 25, 2016 | Mar 7, 2016 |
| 4 | Insider transaction | Aug 23, 2016 | Aug 22, 2016 |
| 4 | Insider transaction | Aug 23, 2016 | Aug 19, 2016 |
| 4/A | Form 4/a | Aug 23, 2016 | Mar 4, 2015 |
| 4 | Insider transaction | Aug 22, 2016 | Aug 18, 2016 |
| 4 | Insider transaction | Aug 22, 2016 | Aug 18, 2016 |
| 4 | Insider transaction | Jun 24, 2016 | Jun 21, 2016 |
| 4 | Insider transaction | May 12, 2016 | May 10, 2016 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 14, 2016 | — |
| 3 | Initial insider ownership | Apr 8, 2016 | Apr 7, 2016 |
| 4 | Insider transaction | Mar 9, 2016 | Mar 7, 2016 |
| 4 | Insider transaction | Mar 9, 2016 | May 29, 2015 |
| 4 | Insider transaction | Mar 2, 2016 | Mar 1, 2016 |
| 4 | Insider transaction | Mar 1, 2016 | Feb 29, 2016 |
| SC 13G | Ownership over 5% (passive) | Feb 12, 2016 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2016 | — |
| 4 | Insider transaction | Sep 1, 2015 | Aug 28, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 27, 2015 |
| SC 13D/A | Amended ownership over 5% (active) | May 20, 2015 | — |
| 4 | Insider transaction | May 18, 2015 | Feb 3, 2015 |
| 4 | Insider transaction | Apr 30, 2015 | Apr 27, 2015 |
| 4 | Insider transaction | Mar 5, 2015 | Mar 4, 2015 |
| 4 | Insider transaction | Mar 5, 2015 | Mar 4, 2015 |
| 4 | Insider transaction | Mar 5, 2015 | Mar 4, 2015 |
| 4 | Insider transaction | Mar 5, 2015 | Mar 4, 2015 |
| 4 | Insider transaction | Mar 5, 2015 | Mar 4, 2015 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Savings Institution, Federally Chartered (SIC 6035)
- Listed as
- WSBF (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- MD
- Headquarters
- Wauwatosa, WI
- SEC filer status
- Accelerated filer
- SEC CIK
- 1569994
Other Savings Institution, Federally Chartered companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.