Security key
97269D103
Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share (WSBK)
CUSIP: 97269D103
Q3 2026 13F Holders as of 30 Sep 2026
- Security type / class
- Equity / Common Stock, $0.01 par value per share
- Total 13F shares
- 31,500
- Total 13F value
- $406,665
- Share change
- +17,342
- SEC-reported price per share
- $12.91
- Number of holders
- 2
- Value change
- +$223,885
- Number of buys
- 1
- Shares outstanding
- 9,295,376
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
2
Top holders
2
WSBK full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q2 2026
Winchester Bancorp, Inc./MD/ SEC filings
Winchester Bancorp, Inc./MD/ company facts
Broader feeds
Reporting periods
Holder history for CUSIP 97269D103
Recent filing periods:
Ownership snapshot
Top reported holders of WSBK - Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Mhc Winchester Bancorp
Disclosed value leader
Mhc Winchester Bancorp
Comparable rows
1/15
Latest evidence
30 Jun 2026
3/4/5
13D/G
13F
Lead comparable stake: 55%
14 rows are not safely comparable across share classes.
13D/G row: Mhc Winchester Bancorp
Showing 1-6 of 15 holder rows.
Quick read
Mhc Winchester Bancorp leads the comparable SEC ownership view at 55%.
1 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Mhc Winchester Bancorp's linked filing trail.
Comparable ownership
Top 1
Mhc Winchester Bancorp
55%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Mhc Winchester Bancorp |
3/4/5
13D/G
10%+ Owner · Winchester Bancorp, MHC
|
55%
Reported 13D/G
· 30 Apr 2025
|
$47,699,224
5,112,457 shares
|
— | 30 Apr 2025 |
| MANGROVE PARTNERS IM, LLC |
13F
Company
|
—
denominator unverified
|
$2,446,681
186,201 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$2,351,285
178,941 shares
|
— | 30 Jun 2026 |
| Northstar Financial Companies, Inc. |
13F
Company
|
—
denominator unverified
|
$919,800
70,000 shares
|
— | 30 Jun 2026 |
| Integrated Wealth Concepts LLC |
13F
Company
|
—
denominator unverified
|
$748,980
57,000 shares
|
— | 30 Jun 2026 |
| Oppenheimer & Close, LLC |
13F
Company
|
—
denominator unverified
|
$657,000
50,000 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
2
Shares
31,500
Rows available
2
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
21
Q3 2026 holders
2
Holder diff
-19
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend