WINMARK CORP
Total Trades
55
Buys
2
Sells
34
Largest Trade
$1M+
Insiders
10
Institutional Funds
175
Inst. Value
$1M+
Activist Filings
21
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| GRASSLE JENELE C | Director | SELL | $1M+ | 4K | $475.80 | Mar 5, 2026 |
| Tomlinson Percy C Jr | Director | SELL | $500K+ | 2K | $460.52 | Mar 3, 2026 |
| GRASSLE JENELE C | Director | SELL | $1M+ | 2K | $420.87 | Nov 21, 2025 |
| GRASSLE JENELE C | Director | EXERCISE | $100K–$500K | 2K | $115.42 | Nov 21, 2025 |
| Gaudette Renae M. | CHIEF OPERATING OF… | EXERCISE | $100K–$500K | 3K | $90.99 | Oct 24, 2025 |
| Gaudette Renae M. | CHIEF OPERATING OF… | SELL | $500K+ | 1K | $417.11 | Oct 24, 2025 |
| Barbetta Lawrence A | Director | SELL | $100K–$500K | 852 | $505.02 | Sep 18, 2025 |
| HEFFES BRETT D | CHAIR AND CEO | SELL | $1M+ | 7K | $454.28 | Aug 28, 2025 |
| HEFFES BRETT D | CHAIR AND CEO | EXERCISE | $1M+ | 9K | $161.66 | Aug 28, 2025 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $500K+ | 7K | $90.99 | Jun 2, 2025 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $1M+ | 4K | $425.95 | Jun 2, 2025 |
| GRASSLE JENELE C | Director | SELL | $500K+ | 2K | $428.23 | May 19, 2025 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $500K+ | 2K | $366.69 | May 6, 2025 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $100K–$500K | 3K | $91.93 | May 6, 2025 |
| Barbetta Lawrence A | Director | SELL | $1M+ | 3K | $425.49 | Nov 27, 2024 |
| OLSON RONALD G | 10% Owner | SELL | $1M+ | 6K | $417.14 | Nov 26, 2024 |
| HEFFES BRETT D | CHAIR AND CEO | SELL | $1M+ | 9K | $396.36 | Nov 7, 2024 |
| HEFFES BRETT D | CHAIR AND CEO | EXERCISE | $1M+ | 10K | $149.65 | Nov 7, 2024 |
| Gaudette Renae M. | CHIEF OPERATING OF… | EXERCISE | $100K–$500K | 3K | $80.32 | Oct 28, 2024 |
| Gaudette Renae M. | CHIEF OPERATING OF… | SELL | $500K+ | 2K | $380.11 | Oct 28, 2024 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $500K+ | 2K | $382.59 | Oct 18, 2024 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $100K–$500K | 5K | $94.46 | Oct 18, 2024 |
| Barbetta Lawrence A | Director | SELL | $500K+ | 2K | $395.30 | Aug 2, 2024 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $1M+ | 4K | $386.51 | Apr 24, 2024 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $500K+ | 8K | $75.38 | Apr 24, 2024 |
| HEFFES BRETT D | CHAIR AND CEO | SELL | $1M+ | 8K | $373.04 | Apr 22, 2024 |
| HEFFES BRETT D | CHAIR AND CEO | EXERCISE | $1M+ | 10K | $131.12 | Apr 22, 2024 |
| WILSON MARK L | Director | SELL | $100K–$500K | 1K | $437.26 | Nov 22, 2023 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $1M+ | 4K | $414.44 | Oct 23, 2023 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $500K+ | 8K | $82.78 | Oct 23, 2023 |
| Gaudette Renae M. | CHIEF OPERATING OF… | SELL | $100K–$500K | 665 | $401.33 | Oct 19, 2023 |
| Gaudette Renae M. | CHIEF OPERATING OF… | EXERCISE | $50K–$100K | 1K | $66.29 | Oct 19, 2023 |
| WILSON MARK L | Director | SELL | $1M+ | 3K | $359.60 | Jun 8, 2023 |
| GRASSLE JENELE C | Director | SELL | $500K+ | 3K | $314.16 | May 9, 2023 |
| HEFFES BRETT D | CHAIRMAN AND CEO | SELL | $1M+ | 7K | $338.18 | Apr 27, 2023 |
| HEFFES BRETT D | CHAIRMAN AND CEO | EXERCISE | $1M+ | 9K | $117.24 | Apr 27, 2023 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $1M+ | 4K | $338.89 | Apr 27, 2023 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $500K+ | 7K | $80.99 | Apr 27, 2023 |
| WILSON MARK L | Director | EXERCISE | $100K–$500K | 2K | $170.22 | Apr 21, 2023 |
| WILSON MARK L | Director | SELL | $500K+ | 2K | $343.88 | Apr 21, 2023 |
| Barbetta Lawrence A | Director | SELL | $1M+ | 10K | $306.58 | Mar 29, 2023 |
| Barbetta Lawrence A | Director | SELL | $1M+ | 7K | $305.47 | Mar 24, 2023 |
| REYELTS PAUL C | Director | SELL | $100K–$500K | 1K | $295.00 | Mar 17, 2023 |
| REYELTS PAUL C | Director | SELL | $500K+ | 2K | $295.25 | Mar 10, 2023 |
| REYELTS PAUL C | Director | SELL | $50K–$100K | 275 | $295.00 | Mar 8, 2023 |
| REYELTS PAUL C | Director | EXERCISE | $500K+ | 3K | $168.31 | Mar 8, 2023 |
| HEFFES BRETT D | CHAIRMAN AND CEO | SELL | $1M+ | 8K | $251.30 | Nov 3, 2022 |
| HEFFES BRETT D | CHAIRMAN AND CEO | EXERCISE | $500K+ | 10K | $94.23 | Nov 3, 2022 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | EXERCISE | $500K+ | 11K | $57.02 | Oct 19, 2022 |
| Ishaug Anthony D | CHIEF FINANCIAL OF… | SELL | $1M+ | 6K | $232.83 | Oct 19, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 175 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Neuberger Berman Group LLC | 292K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 208K | $1M+ | SH |
| FIRST TRUST ADVISORS LP | 152K | $1M+ | SH |
| Fisher Asset Management, LLC | 105K | $1M+ | SH |
| Port Capital LLC | 98K | $1M+ | SH |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 96K | $1M+ | SH |
| STATE STREET CORP | 84K | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 78K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 69K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 67K | $1M+ | SH |
| Copeland Capital Management, LLC | 66K | $1M+ | SH |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 52K | $1M+ | SH |
| Man Group plc | 37K | $1M+ | SH |
| GOLDMAN SACHS GROUP INC | 27K | $1M+ | SH |
| SCHWARTZ INVESTMENT COUNSEL INC | 27K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 25K | $1M+ | SH |
| ENVESTNET ASSET MANAGEMENT INC | 21K | $1M+ | SH |
| VANGUARD GROUP INC | 19K | $1M+ | SH |
| KENNEDY CAPITAL MANAGEMENT LLC | 16K | $1M+ | SH |
| VICTORY CAPITAL MANAGEMENT INC | 16K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 6, 2026
12.1%
432K shares
SC 13G · Jan 21, 2026
4.9%
174K shares
SC 13G · Aug 13, 2025
6.2%
220K shares
SC 13G · Jul 29, 2025
5.1%
181K shares
SC 13G/A · Apr 17, 2025
6.1%
217K shares
SC 13G/A · Feb 13, 2025
5.0%
174K shares
SC 13G · Jan 14, 2025
5.0%
177K shares
Mawer Investment Management Ltd.
SC 13G/A · Nov 8, 2024
2.6%
90K shares
Renaissance Technologies LLC 26-0385758
SC 13G · Feb 13, 2024
5.1%
177K shares
Neuberger Berman Group LLC 61-1591182
SC 13G · Feb 12, 2024
8.8%
308K shares
SC 13G/A · Jan 26, 2024
7.6%
264K shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G/A · Feb 14, 2023
4.1%
144K shares
Mawer Investment Management Ltd.
SC 13G/A · Feb 13, 2023
11.0%
377K shares
Nine Ten Capital Management LLC - IRS # 46-5220958
SC 13G/A · Feb 10, 2023
2.6%
91K shares
SC 13G/A · Jan 31, 2023
6.3%
217K shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G/A · Dec 12, 2022
5.1%
174K shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G · Aug 10, 2022
10.1%
349K shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Aug 10, 2022
0.0%
2K shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2022
10.2%
372K shares
Mawer Investment Management Ltd.
SC 13G/A · Feb 10, 2022
10.7%
386K shares
SC 13G/A · Feb 1, 2022
6.4%
233K shares