{
  "name": "Winchester Bancorp, Inc.",
  "legal_name": "Winchester Bancorp, Inc./MD/",
  "ticker": "WSBK",
  "tickers": [
    "WSBK"
  ],
  "cik": "0002047235",
  "page_url": "https://steadybase.io/company/winchester-bancorp-inc/",
  "markdown_url": "https://steadybase.io/company/winchester-bancorp-inc.md",
  "json_url": "https://steadybase.io/company/winchester-bancorp-inc.json",
  "as_of": "2026-11-10",
  "last_filed": "2026-11-04",
  "industry": {
    "sic": "6036",
    "description": "Savings Institutions, Not Federally Chartered"
  },
  "headquarters": {
    "city": "Winchester",
    "state": "MA",
    "country": "US"
  },
  "exchanges": [
    "Nasdaq"
  ],
  "fiscal_year_end": "December 31",
  "filer_category": "<br>Emerging growth company",
  "state_of_incorporation": "MD",
  "website": "winchestersavings.com",
  "investor_relations_url": "https://ir.winchestersavings.com/overview/default.aspx",
  "linkedin_company_url": "https://www.linkedin.com/company/winchester-savings-bank",
  "summary": {
    "text": "Winchester Bancorp, Inc. (the “Company”, \"we\", \"our\", \"us\") is a Maryland corporation that was incorporated in December 2024 to become the registered bank holding company of Winchester Savings Bank (the “Bank”) as part of the mutual holding company reorganization of the Bank, which was completed on April 30, 2025.",
    "section": "Item 1. Business",
    "period_end": "2026-06-30",
    "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
  },
  "key_facts": [
    {
      "key": "revenue",
      "label": "Revenue",
      "value": 50380000,
      "unit": "USD",
      "period_start": "2025-07-01",
      "period_end": "2026-06-30",
      "basis": "filing_fact",
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/0001193125-26-392194-index.html",
      "text": "Revenue: $50.4M for the fiscal year ended Jun 30, 2026 (10-K filed Sep 16, 2026)."
    },
    {
      "key": "net_income",
      "label": "Net income",
      "value": 4421000,
      "unit": "USD",
      "period_start": "2025-07-01",
      "period_end": "2026-06-30",
      "basis": "filing_fact",
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/0001193125-26-392194-index.html",
      "text": "Net income: $4.4M for the fiscal year ended Jun 30, 2026 (10-K filed Sep 16, 2026)."
    },
    {
      "key": "shares_outstanding",
      "label": "Shares outstanding",
      "value": 9295376,
      "unit": "shares",
      "period_end": "2026-11-04",
      "form": "10-Q",
      "filed": "2026-11-04",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526447179/0001193125-26-447179-index.html",
      "text": "Shares outstanding: 9,295,376 as of Nov 4, 2026 (10-Q filed Nov 4, 2026)."
    },
    {
      "key": "auditor",
      "label": "Auditor",
      "value": "Wolf & Company",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm",
      "text": "Auditor: Wolf & Company, Boston, Massachusetts, named in the latest 10-K."
    }
  ],
  "metrics": {
    "revenue": [
      {
        "period_start": "2025-07-01",
        "period_end": "2026-06-30",
        "value": 50380000,
        "unit": "USD",
        "basis": "filing_fact",
        "form": "10-K",
        "filed": "2026-09-16",
        "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/0001193125-26-392194-index.html"
      },
      {
        "period_start": "2024-07-01",
        "period_end": "2025-06-30",
        "value": 42713000,
        "unit": "USD",
        "basis": "filing_fact",
        "form": "10-K",
        "filed": "2026-09-16",
        "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/0001193125-26-392194-index.html"
      },
      {
        "period_start": "2023-07-01",
        "period_end": "2024-06-30",
        "value": 34863000,
        "unit": "USD",
        "basis": "filing_fact",
        "form": "10-K",
        "filed": "2025-09-17",
        "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312525206332/0001193125-25-206332-index.html"
      }
    ],
    "net_income": [
      {
        "period_start": "2025-07-01",
        "period_end": "2026-06-30",
        "value": 4421000,
        "unit": "USD",
        "basis": "filing_fact",
        "form": "10-K",
        "filed": "2026-09-16",
        "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/0001193125-26-392194-index.html"
      },
      {
        "period_start": "2024-07-01",
        "period_end": "2025-06-30",
        "value": -874000,
        "unit": "USD",
        "basis": "filing_fact",
        "form": "10-K",
        "filed": "2026-09-16",
        "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/0001193125-26-392194-index.html"
      },
      {
        "period_start": "2023-07-01",
        "period_end": "2024-06-30",
        "value": 786000,
        "unit": "USD",
        "basis": "filing_fact",
        "form": "10-K",
        "filed": "2025-09-17",
        "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312525206332/0001193125-25-206332-index.html"
      }
    ]
  },
  "next_earnings": {
    "date": "2027-02-11",
    "confidence": "estimate",
    "webcast_url": null
  },
  "people": [
    {
      "name": "John A. Carroll",
      "title": "President and Chief Executive Officer",
      "role": "officer",
      "linkedin_url": "https://linkedin.com/in/john-carroll-a062a73b",
      "form": "8-K",
      "filed": "2026-10-28",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526436113/wsbk-ex99_1.htm"
    },
    {
      "name": "Elda Heller",
      "title": "Executive Vice President and Chief Financial Officer",
      "role": "officer",
      "linkedin_url": "https://linkedin.com/in/elda-heller-a169b39",
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Deborah A Carson",
      "title": "Chairperson of the Board",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Alan G. Macdonald",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Carole A. Pierce Connolly",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "David P. Hood",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Edward Merritt",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Geoffrey A. Curtis",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "John I Snow, III",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Neal J. Harte",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Paula M. Cotter",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Sara Perkins Salehpour",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Stephen H. Boodakian",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "William P. Hood",
      "title": "Director",
      "role": "director",
      "linkedin_url": null,
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "name": "Paul V. Cheremka",
      "title": "Named in proxy",
      "role": "officer",
      "linkedin_url": null,
      "form": "DEF 14A",
      "filed": "2026-09-28",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526403439/wsbk-20260928.htm"
    }
  ],
  "events_8k": [
    {
      "filed": "2026-11-05",
      "items": [
        {
          "item": "5.02",
          "label": "Departure or appointment of directors or officers; compensation",
          "signal": "leadership_change"
        },
        {
          "item": "5.07",
          "label": "Submission of matters to a vote of security holders",
          "signal": "governance"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526449165/wsbk-20261104.htm"
    },
    {
      "filed": "2026-10-28",
      "items": [
        {
          "item": "2.02",
          "label": "Results of operations and financial condition (earnings release)",
          "signal": "earnings"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526436113/wsbk-20261028.htm"
    },
    {
      "filed": "2026-09-30",
      "items": [
        {
          "item": "8.01",
          "label": "Other events",
          "signal": "other"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526408295/wsbk-20260930.htm"
    },
    {
      "filed": "2026-07-30",
      "items": [
        {
          "item": "2.02",
          "label": "Results of operations and financial condition (earnings release)",
          "signal": "earnings"
        },
        {
          "item": "5.03",
          "label": "Amendments to articles or bylaws; change in fiscal year",
          "signal": "governance"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526324928/wsbk-20260730.htm"
    },
    {
      "filed": "2026-04-29",
      "items": [
        {
          "item": "2.02",
          "label": "Results of operations and financial condition (earnings release)",
          "signal": "earnings"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526191386/wsbk-20260429.htm"
    },
    {
      "filed": "2026-01-28",
      "items": [
        {
          "item": "2.02",
          "label": "Results of operations and financial condition (earnings release)",
          "signal": "earnings"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526027185/wsbk-20260128.htm"
    },
    {
      "filed": "2025-11-13",
      "items": [
        {
          "item": "5.07",
          "label": "Submission of matters to a vote of security holders",
          "signal": "governance"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312525279601/wsbk-20251112.htm"
    },
    {
      "filed": "2025-10-22",
      "items": [
        {
          "item": "2.02",
          "label": "Results of operations and financial condition (earnings release)",
          "signal": "earnings"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312525246729/wsbk-20251022.htm"
    },
    {
      "filed": "2025-09-17",
      "items": [
        {
          "item": "8.01",
          "label": "Other events",
          "signal": "other"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312525206345/wsbk-20250917.htm"
    },
    {
      "filed": "2025-07-30",
      "items": [
        {
          "item": "2.02",
          "label": "Results of operations and financial condition (earnings release)",
          "signal": "earnings"
        },
        {
          "item": "9.01",
          "label": "Financial statements and exhibits",
          "signal": "exhibits"
        }
      ],
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000095017025100224/wsbk-20250730.htm"
    }
  ],
  "insider_trades": [
    {
      "owner": "Edward J. Merritt",
      "role": "Director",
      "action": "bought",
      "code": "P",
      "shares": 915,
      "value_usd": 11675,
      "date": "2026-05-26",
      "filed": "2026-05-27",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000143774926018597/0001437749-26-018597-index.htm"
    },
    {
      "owner": "John A. Carroll",
      "role": "President & CEO",
      "action": "bought",
      "code": "P",
      "shares": 50,
      "value_usd": 638,
      "date": "2026-05-21",
      "filed": "2026-05-22",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000143774926018205/0001437749-26-018205-index.htm"
    },
    {
      "owner": "John Ingalls Snow III",
      "role": "Director",
      "action": "bought",
      "code": "P",
      "shares": 1725,
      "value_usd": 22059,
      "date": "2026-05-07",
      "filed": "2026-05-08",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000143774926015781/0001437749-26-015781-index.htm"
    },
    {
      "owner": "John Ingalls Snow III",
      "role": "Director",
      "action": "bought",
      "code": "P",
      "shares": 6110,
      "value_usd": 78636,
      "date": "2026-05-05",
      "filed": "2026-05-06",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000143774926015135/0001437749-26-015135-index.htm"
    },
    {
      "owner": "Stephen Harry Boodakian",
      "role": "Director",
      "action": "bought",
      "code": "P",
      "shares": 2500,
      "value_usd": 32325,
      "date": "2026-05-01",
      "filed": "2026-05-05",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000143774926014760/0001437749-26-014760-index.htm"
    }
  ],
  "quotes": [
    {
      "text": "We continue to build on the momentum we established in our first year as a public company",
      "speaker": "John A. Carroll",
      "title": "President and Chief Executive Officer",
      "form": "8-K",
      "filed": "2026-10-28",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526436113/wsbk-ex99_1.htm"
    }
  ],
  "latest_filings": [
    {
      "form": "8-K",
      "filed": "2026-10-28",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526436113/wsbk-20261028.htm"
    },
    {
      "form": "10-K",
      "filed": "2026-09-16",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526392194/wsbk-20260630.htm"
    },
    {
      "form": "10-Q",
      "filed": "2026-05-13",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526221566/wsbk-20260331.htm"
    },
    {
      "form": "DEF 14A",
      "filed": "2026-09-28",
      "source_url": "https://www.sec.gov/Archives/edgar/data/2047235/000119312526403439/wsbk-20260928.htm"
    }
  ],
  "source": "SEC EDGAR filings, read by Steadybase. Every value links to the filing it came from."
}