WINA

WINMARK CORP

Retail-Miscellaneous RetailNasdaqLarge accelerated filer

Total Trades

55

Buys

2

Sells

34

Largest Trade

$1M+

Insiders

10

Institutional Funds

176

Inst. Value

$1M+

Activist Filings

21

Insider Trades

InsiderTitleTypeValueSharesPriceDate
GRASSLE JENELE CDirectorSELL$100K–$500K2K$234.76Aug 19, 2022
Tomlinson Percy C JrDirectorBUY$15K–$50K100$224.81Apr 14, 2022
Goff Leah AVP OF HUMAN RESOUR…SELL$100K–$500K2K$225.28Mar 14, 2022
Goff Leah AVP OF HUMAN RESOUR…EXERCISE$100K–$500K2K$144.45Mar 14, 2022
Tomlinson Percy C JrDirectorBUY$15K–$50K100$225.00Mar 9, 2022
🔓Seeing ranges? Sign in for exact trade values — free forever

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

BlackRock, Inc.

SC 13G/A · Feb 6, 2026

12.1%

432K shares

AltraVue Capital, LLC

SC 13G · Jan 21, 2026

4.9%

174K shares

Renaissance Technologies LLC

SC 13G · Aug 13, 2025

6.2%

220K shares

The Vanguard Group

SC 13G · Jul 29, 2025

5.1%

181K shares

BlackRock, Inc.

SC 13G/A · Apr 17, 2025

6.1%

217K shares

Renaissance Technologies LLC

SC 13G/A · Feb 13, 2025

5.0%

174K shares

AltraVue Capital, LLC

SC 13G · Jan 14, 2025

5.0%

177K shares

Mawer Investment Management Ltd.

SC 13G/A · Nov 8, 2024

2.6%

90K shares

5.1%

177K shares

8.8%

308K shares

BlackRock, Inc.

SC 13G/A · Jan 26, 2024

7.6%

264K shares

4.1%

144K shares

Mawer Investment Management Ltd.

SC 13G/A · Feb 13, 2023

11.0%

377K shares

2.6%

91K shares

BlackRock, Inc.

SC 13G/A · Jan 31, 2023

6.3%

217K shares

5.1%

174K shares

10.1%

349K shares

0.0%

2K shares

10.2%

372K shares

Mawer Investment Management Ltd.

SC 13G/A · Feb 10, 2022

10.7%

386K shares

BlackRock, Inc.

SC 13G/A · Feb 1, 2022

6.4%

233K shares

View on Google Finance →