SEC Form 4
Winchester Bancorp, Inc. (WSBK) insider trading
In the 12 months to Nov 7, 2026, 4 WSBK insiders reported open-market purchases of $145.3K across 5 filings; no open-market sales were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $0
- 0 filings · 0 insiders
- Open-market purchases
- $145.3K
- 5 filings
Who traded WSBK, and when
- Purchase
WSBK daily close from Nov 10, 2025 to Nov 6, 2026, between $9.56 and $13.65, last $13.61. 0 sale and 5 purchase filings by 4 insiders, marked at their filing dates. John Ingalls Snow III, Director: bought $100.7K across 2 filings, first filed May 6, 2026, last May 8, 2026. Stephen Harry Boodakian, Director: bought $32.3K across 1 filing, first filed May 5, 2026, last May 5, 2026. Edward J. Merritt, Director: bought $11.7K across 1 filing, first filed May 27, 2026, last May 27, 2026. John A. Carroll, President & CEO: bought $638 across 1 filing, first filed May 22, 2026, last May 22, 2026.
Largest mark · tap a row for others
John Ingalls Snow III · Director
Filing 1 of 2 within a week · $100,694 total
Purchase $78,636
6,110 shares at $12.87 avg
Filed May 6, 2026 · traded May 5
Close on filing date $12.65
John Ingalls Snow III · Director
Director
$100.7K boughtStephen Harry Boodakian · Director
Director
$32.3K boughtEdward J. Merritt · Director
Director
$11.7K boughtJohn A. Carroll · President & CEO
President & CEO
$638 boughtOpen-market trades
5 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| John Ingalls Snow III | Director | — | $100.7K | 2 | — | |
| Stephen Harry Boodakian | Director | — | $32.3K | 1 | — | |
| Edward J. Merritt | Director | — | $11.7K | 1 | — | |
| John A. Carroll | President & CEO | — | $638 | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Edward J. Merritt Director | Purchase | 915 | $12.76 | $11.7K | 20,915 | |
traded | John A. Carroll President & CEO | Purchase | 50 | $12.75 | $638 | 50 | |
traded | John Ingalls Snow III Director | Purchase | 1,725 | $12.79 | $22.1K | 19,535 | |
traded | John Ingalls Snow III Director | Purchase | 6,110 | $12.87 | $78.6K | 18,610 | |
traded | Stephen Harry Boodakian Director | Purchase | 2,500 | $12.93 | $32.3K | 2,500 |
GET /stocks/filings/vX/form-4?tickers=WSBK&filing_date.gte=2025-11-07&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"WSBK"
],
"issuer_cik": "0002047235",
"owner_cik": "0001480263",
"accession_number": "0001437749-26-018597",
"form_type": "4",
"filing_date": "2026-05-27",
"period_of_report": "2026-05-26",
"issuer_name": "Winchester Bancorp, Inc./MD/",
"issuer_trading_symbol": "WSBK",
"owner_name": "Merritt Edward J",
"is_director": true,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-26",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 915,
"transaction_price_per_share": 12.76,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 20915,
"transaction_value": 11675.4,
"direct_or_indirect": "I",
"nature_of_ownership": "By IRA"
},
{
"tickers": [
"WSBK"
],
"issuer_cik": "0002047235",
"owner_cik": "0001602704",
"accession_number": "0001437749-26-018205",
"form_type": "4",
"filing_date": "2026-05-22",
"period_of_report": "2026-05-21",
"issuer_name": "Winchester Bancorp, Inc./MD/",
"issuer_trading_symbol": "WSBK",
"owner_name": "Carroll John A",
"is_director": true,
"is_officer": true,
"officer_title": "President & CEO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-21",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 50,
"transaction_price_per_share": 12.75,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 50,
"transaction_value": 637.5,
"direct_or_indirect": "I",
"nature_of_ownership": "By Spouse as custodian for child"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 14 records
- Grants and awards12 records
- Gifts2 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Winchester Bancorp, Inc.'s CEO sold stock?
No. John A. Carroll (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is WSBK’s insider data?
These are WSBK Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
Build with AI
Track WSBK insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for WSBK every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
Nothing on this page is investment advice. All data and content is provided for informational purposes under our Terms of Service.