Winmark Corporation (WINA) ownership: Top institutional holder: BlackRock, Inc. ($199.40M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 466377.00 | $199.40M | 2026-03-31 |
| NEUBERGER BERMAN GROUP LLC | 284676.00 | $121.71M | 2026-03-31 |
| RENAISSANCE TECHNOLOGIES LLC | 205875.00 | $88.02M | 2026-03-31 |
| VANGUARD GROUP INC | 186832.00 | $75.66M | 2025-12-31 |
| AltraVue Capital, LLC | 161863.00 | $69.20M | 2026-03-31 |
| FIRST TRUST ADVISORS LP | 150369.00 | $64.29M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 137822.00 | $58.93M | 2026-03-31 |
| STATE STREET CORP | 123645.00 | $52.86M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.