// company-profile

Winchester Bancorp, Inc./MD/

WSBK
ExchangeNasdaqSectorSavings Institutions, Not Federally CharteredInc.MDFilings9Insiders5
// api This Winchester Bancorp, Inc./MD/ insider-trading data is served live by the Form4API insider trading API. Get the same data via API.

// activity-summary

Recent insider activity is bullish. Over the last 30 days, 1 insider purchased shares (net $12K). Buying was led by Merritt Edward J.

// 90-day insight

Over the last 90 days, Winchester Bancorp, Inc./MD/ insiders bought $145K across 6 transactions with no open-market sales.

  • Most active insider: Snow John Ingalls III with 5 transactions totaling $101K.
  • Largest single purchase: $79K by Snow John Ingalls III on May 5, 2026.

Activity skews bullish — buys outpace sales.

Institutional Ownership

Top 13F-HR holders of Winchester Bancorp, Inc./MD/ as of 2026-03-31

↑ increasing
Total reported AUM
$8.2M
QoQ change
+24.4%
Reporting period
2026-03-31
#1
MANGROVE PARTNERS IM, LLC
CIK 1535392
$2.4M
186K shares
#2
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$2.3M
182K shares
#3
Northstar Financial Companies, Inc.
CIK 2059828
$889,000
70K shares

Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
May 26, 2026Merritt Edward JWSBK
Purchase
915$12.76$12K
May 21, 2026Carroll John AWSBK
Purchase
50$12.75$1K
May 7, 2026Snow John Ingalls IIIWSBK
Purchase
200$12.77$3K
May 7, 2026Snow John Ingalls IIIWSBK
Purchase
1,525$12.79$20K
May 5, 2026Snow John Ingalls IIIWSBK
Purchase
6,110$12.87$79K

30 more transactions hidden

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