// company-profile
Waterstone Financial, Inc.
WSBFExchangeNasdaqSectorSavings Institution, Federally CharteredInc.MDFilings43Insiders11
// api This Waterstone Financial, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Waterstone Financial, Inc. insiders bought $150K (2 transactions) and sold $183K (1 transaction).
- Most active insider: Gerke Mark Raymond with 3 transactions totaling $333K.
- Largest single sale: $183K by Gerke Mark Raymond on May 21, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Waterstone Financial, Inc. as of 2026-03-31
Total reported AUM
$161.1M
QoQ change
+32.3%
Reporting period
2026-03-31
#1
DIMENSIONAL FUND ADVISORS LP
CIK 354204
$24.6M
1.4M shares
#2
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
$19.7M
1.1M shares
#3
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$12.6M
700K 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.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 21, 2026 | Gerke Mark Raymond | WSBF | Sale | 10,000 | $18.34 | $183K |
| May 21, 2026 | Gerke Mark Raymond | WSBF | Option Exercise | 10,000 | $0.00 | $0K |
| May 21, 2026 | Gerke Mark Raymond | WSBF | Option Exercise | 10,000 | $14.98 | $150K |
| Feb 18, 2026 | Gordon Douglas S | WSBF | Sale | 2,880 | $18.11 | $52K |
| Feb 6, 2026 | Gordon Douglas S | WSBF | Sale | 6,765 | $18.27 | $124K |
45 more transactions hidden
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