Winmark Corporation (WINA) Insider Trading

Last 12 months

Insiders sold $4.13M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. Director Jenele C Grassle sold $1.86M on Mar 4, 61% of their stake, outside a plan. The last open-market buy by an executive or director was in Aug 2025.

Net open-market

−$4.13M

0 buys · 4 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 3

executives and directors

Last open-market buy

Aug 2025

Aug 13, 2025

Get an email when WINA's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Mar 4	Jenele C Grassle Director	SoldNo plan	3,900	$475.80	$1.86M	61%	Form 4
Mar 3	Percy C Tomlinson Jr Director	SoldNo plan	1,660	$460.52	$764k	67%	Form 4
Nov 21, 2025	Jenele C Grassle Director	SoldNo plan	2,400	$420.87	$1.01M	49%	Form 4
Oct 24, 2025	Renae M. Gaudette CHIEF OPERATING OFFICER	SoldNo plan 2 parts	1,200	$417.11 average	$501k	6.0%	Form 4
Sep 17, 2025	Lawrence A Barbetta Director	SoldNo plan 2 parts	852	$505.02 average	$430k	57%	Form 4
Aug 26, 2025 – Aug 27, 2025	Brett D Heffes CHAIR AND CEO	SoldNo plan 8 parts	7,412	$454.28 average	$3.37M	6.1%	Form 4
Aug 13, 2025	Gina Decaro Sprenger Director	Bought	250	$410.77	$103k	New	Form 4
May 30, 2025	Anthony D Ishaug CHIEF FINANCIAL OFFICER	SoldNo plan 5 parts	4,000	$425.95 average	$1.7M	5.9%	Form 4
May 16, 2025	Jenele C Grassle Director	SoldNo plan	1,600	$428.23	$685k	39%	Form 4
May 6, 2025	Anthony D Ishaug CHIEF FINANCIAL OFFICER	SoldNo plan 4 parts	1,600	$366.69 average	$587k	2.6%	Form 4
Nov 25, 2024	Lawrence A Barbetta Director	SoldNo plan 2 parts	3,021	$425.49 average	$1.29M	67%	Form 4
Nov 22, 2024 – Nov 25, 2024	Ronald G Olson Large holder	SoldNo plan 4 parts	6,400	$417.14 average	$2.67M	1.6%	Form 4
Nov 5, 2024 – Nov 6, 2024	Brett D Heffes CHAIR AND CEO	SoldNo plan 9 parts	8,997	$396.36 average	$3.57M	7.4%	Form 4
Oct 25, 2024	Renae M. Gaudette CHIEF OPERATING OFFICER	SoldNo plan	1,500	$380.11	$570k	9.1%	Form 4

Mar 4No plan
Jenele C Grassle
Director · sold 3,900 at $475.80
$1.86M
61% of stake
Mar 3No plan
Percy C Tomlinson Jr
Director · sold 1,660 at $460.52
$764k
67% of stake
Nov 21, 2025No plan
Jenele C Grassle
Director · sold 2,400 at $420.87
$1.01M
49% of stake
Oct 24, 2025No plan
Renae M. Gaudette
CHIEF OPERATING OFFICER · sold 1,200 at avg $417.11
$501k
6.0% of stake
Sep 17, 2025No plan
Lawrence A Barbetta
Director · sold 852 at avg $505.02
$430k
57% of stake
Aug 26, 2025 – Aug 27, 2025No plan
Brett D Heffes
CHAIR AND CEO · sold 7,412 at avg $454.28
$3.37M
6.1% of stake
Aug 13, 2025
Gina Decaro Sprenger
Director · bought 250 at $410.77
$103k
New position
May 30, 2025No plan
Anthony D Ishaug
CHIEF FINANCIAL OFFICER · sold 4,000 at avg $425.95
$1.7M
5.9% of stake
May 16, 2025No plan
Jenele C Grassle
Director · sold 1,600 at $428.23
$685k
39% of stake
May 6, 2025No plan
Anthony D Ishaug
CHIEF FINANCIAL OFFICER · sold 1,600 at avg $366.69
$587k
2.6% of stake
Nov 25, 2024No plan
Lawrence A Barbetta
Director · sold 3,021 at avg $425.49
$1.29M
67% of stake
Nov 22, 2024 – Nov 25, 2024No plan
Ronald G Olson
Large holder · sold 6,400 at avg $417.14
$2.67M
1.6% of stake
Nov 5, 2024 – Nov 6, 2024No plan
Brett D Heffes
CHAIR AND CEO · sold 8,997 at avg $396.36
$3.57M
7.4% of stake
Oct 25, 2024No plan
Renae M. Gaudette
CHIEF OPERATING OFFICER · sold 1,500 at $380.11
$570k
9.1% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch WINA, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in WINA's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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