Winmark Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -60.44. In total, the insiders bought 107.23K and sold 25.69K WINA shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power

(Last 100 transactions)
-60.44
Buy 107.23K shares
Sell 25.69K shares
75% Buy Activity
Negligible or No Correlation
Buy Signal Low Confidence
Jun 01, 2026

Analysis Breakdown:

  • Signal is highly questionable due to a strongly contradictory negative Insider Power Score of -60.44.
  • Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date Type Person Role Amount
Aug 27, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 2 103
Value: $370.5K
Aug 27, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 170
Value: $76.8K
Aug 27, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 1 630
Value: $737.9K
Aug 27, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 1 186
Value: $538.5K
Aug 27, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 1 985
Value: $903.1K
Aug 27, 2025
Buy
Common Stock
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 2 868
Value: $472.8K
Aug 26, 2025
Buy
Common Stock
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 510
Value: $99.9K
Aug 26, 2025
Buy
Common Stock
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 526
Value: $86.7K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 600
Value: $275.2K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 400
Value: $182.8K
Aug 26, 2025
Buy
Common Stock
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 1 915
Value: $275.5K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 800
Value: $363.1K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 641
Value: $289.8K
Aug 26, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 510
Value: $99.9K
Aug 26, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 3 394
Value: $559.5K
Aug 26, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 3 305
Value: $475.5K
Aug 26, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 3 305
Value: $475.5K
Aug 26, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 3 394
Value: $559.5K
Aug 26, 2025
Buy
Employee Stock Option (right to buy)
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 510
Value: $99.9K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 641
Value: $289.8K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 800
Value: $363.1K
Aug 26, 2025
Buy
Common Stock
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 1 915
Value: $275.5K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 400
Value: $182.8K
Aug 26, 2025
Sell
Common Stock
S-Sale
Heffes Brett D
Chair And CEO
CEO / President 600
Value: $275.2K
Aug 26, 2025
Buy
Common Stock
M-Exempt
Heffes Brett D
Chair And CEO
CEO / President 526
Value: $86.7K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

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ABOUT WINMARK CORPORATION
Winmark
Winmark Corporation, together with its subsidiaries, operates as a franchisor of retail store concepts that buy, sell, trade, and consign used merchandise primarily in the United States and Canada. The company operates through two segments, Franchising and Leasing. Its franchises retail stores operate under the Plato's Closet, Once Upon A Child, Play It Again Sports, Style Encore, and Music Go Round brand names. The company's Plato's Closet brand...
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