Winmark Corp
WINA- Exchange
- Nasdaq
- Industry
- Retail-Miscellaneous Retail
- SEC CIK
- 0000908315
In the last 90 days, Winmark Corp insiders filed 0 open-market purchases and 1 sale; 216 institutions reported holding it in 13F filings for Q2 2026, worth $1.36B in total; no superinvestor holds it.
Holders of 5% or more of WINA
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Winmark Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 12.10%432.1K shares | +6.00 ppfrom 6.10% | Apr 17, 20252 filings | Feb 6, 2026 | SEC |
| Renaissance Technologies LLC | 13G | 6.21%220.5K shares | +1.26 ppfrom 4.95% | Feb 11, 20214 filings | Aug 13, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
34 Schedule 13D and 13G filings on Winmark Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 30, 202610:14 AM ET | First Trust Portfolios LPand 2 others | 13G/A | 0.06%2.04K shares | −5.26 ppfrom 5.32%Below 5% | Sep 30, 2026 | SEC |
| Jul 27, 202611:00 AM ET | First Trust Portfolios LPand 2 others | 13G | 5.32%190.2K shares | New | Jun 30, 2026 | SEC |
| Mar 27, 20262:14 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −5.13 ppfrom 5.13%Below 5% | Mar 13, 2026 | SEC |
| Feb 6, 202612:08 PM ET | BlackRock, Inc. | 13G/A | 12.10%432.1K shares | +6.00 ppfrom 6.10% | Jan 31, 2026 | SEC |
| Jan 21, 20263:53 PM ET | AltraVue Capital, LLC | 13G | 4.90%174.1K shares | −0.10 ppfrom 5.00%Below 5% | Dec 31, 2025 | SEC |
| Aug 13, 20254:13 PM ET | Renaissance Technologies LLCand 1 other | 13G | 6.21%220.5K shares | +1.26 ppfrom 4.95% | Jun 4, 2025 | SEC |
| Jul 29, 20252:50 PM ET | Vanguard Group Inc | 13G | 5.13%181.4K shares | New | Jun 30, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 6.10%217.1K shares | – | Mar 31, 2025 | SEC |
| Feb 13, 20259:59 AM ET | Renaissance Technologies LLCand 1 other | 13G/A | 4.95%174.2K shares | –Below 5% | Dec 31, 2024 | SEC |
| Jan 14, 20251:43 PM ET | AltraVue Capital, LLC | 13G | 5.00%177.4K shares | New | Jan 8, 2025 | SEC |
| Nov 8, 2024 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Renaissance Technologies LLC | 13GOld format | – | – | – | SEC |
| Feb 12, 2024 | Neuberger Berman Group LLC | 13GOld format | – | New | – | SEC |
| Feb 5, 2024 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Jan 26, 202411:49 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | T. Rowe Price Investment Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Nine Ten Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Jan 31, 20235:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Dec 12, 2022 | T. Rowe Price Investment Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Aug 10, 2022 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | New | – | SEC |
| Aug 10, 2022 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | Nine Ten Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20225:08 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| May 7, 2021 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Apr 12, 2021 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Apr 12, 2021 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Nine Ten Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | Renaissance Technologies LLC | 13G/AOld format | – | – | – | SEC |
| Feb 5, 2021 | Mawer Investment Management Ltd. | 13G/AOld format | – | – | – | SEC |
| Feb 2, 20213:13 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
35 notices from officers, directors and other affiliates planning to sell Winmark Corp shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Oct 22, 20265:15 PM ET | Gaudette Renae M.Officer | 1.88K | $526.4K | Oct 22, 2026 | Piper Sandler & Co Inc | SEC |
| Jul 14, 20261:03 PM ET | Grassle Jenele CDirector | 1.39K | $524.8K | Jul 14, 2026 | Charles Schwab Corp. | SEC |
| May 7, 202611:31 AM ET | Grassle Jenele CFormer affiliate | 3.00K | $1.10M | May 7, 2026 | Charles Schwab Corporation | SEC |
| Mar 4, 20269:30 AM ET | Grassle Jenele CDirector | 3.90K | $1.87M | Mar 4, 2026 | Charles Schwab & Co., Inc. | SEC |
| Mar 3, 202611:17 AM ET | Tomlinson Family Rev Tr DTD 8/25/16Board Member | 1.66K | $751.9K | Mar 3, 2026 | UBS Financial Services Inc | SEC |
| Nov 21, 20252:29 PM ET | Grassle Jenele CDirector | 2.40K | $1.00M | Nov 21, 2025 | Charles Schwab Corporation | SEC |
| Oct 24, 202511:21 AM ET | Renae GaudetteCOO | 1.20K | $500.5K | Oct 24, 2025 | Merrill | SEC |
| Sep 17, 20254:22 PM ET | Barbetta Lawrence ADirector | 852 | $430.3K | Sep 17, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Aug 27, 20254:01 PM ET | Heffes Brett DOfficer · Director | 4.97K | $2.23M | Aug 27, 2025 | Piper Sandler & Co Inc | SEC |
| Aug 26, 20254:39 PM ET | Heffes Brett DOfficer · Director | 2.44K | $1.12M | Aug 26, 2025 | Piper Sandler & Co Inc | SEC |
| May 30, 20254:01 PM ET | Ishaug Anthony DOfficer | 4.00K | $1.71M | May 30, 2025 | Piper Sandler & Co Inc | SEC |
| May 15, 202510:56 AM ET | Grassle Jenele CDirector | 1.60K | $669.9K | May 15, 2025 | Charles Schwab Corporation | SEC |
| May 6, 20254:14 PM ET | Ishaug Anthony DOfficer | 1.60K | $589.6K | May 6, 2025 | Piper Sandler & Co | SEC |
| Nov 25, 20245:32 PM ET | Barbetta Lawrence ADirector | 4.50K | $1.91M | Nov 25, 2024 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 25, 20243:58 PM ET | Olson Ronald G10% stockholder | 1.40K | $594.1K | Nov 25, 2024 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 22, 20243:33 PM ET | Olson Ronald G10% stockholder | 5.00K | $2.04M | Nov 22, 2024 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 6, 20245:02 PM ET | Heffes Brett DOfficer | 500 | $202.9K | Nov 6, 2024 | Piper Sandler & Co | SEC |
| Nov 5, 20245:15 PM ET | Heffes Brett DOfficer | 8.50K | $3.31M | Nov 5, 2024 | Piper Sandler and Co | SEC |
| Oct 25, 20241:01 PM ET | Gaudette Renae M.Officer | 1.50K | $570.0K | Oct 25, 2024 | MERRILL | SEC |
| Oct 18, 20244:24 PM ET | Ishaug Anthony DOfficer | 2.40K | $916.8K | Oct 18, 2024 | Piper Sandler & Co | SEC |
| Jul 26, 20244:13 PM ET | Barbetta Lawrence ADirector | 5.00K | $2.02M | Jul 26, 2024 | RBC WEALTH MANAGEMENT | SEC |
| May 16, 20245:42 PM ET | Mark L Wilson Irrevocable Trust IIBoard Member | 3.79K | $1.41M | May 16, 2024 | UBS Financial Services Inc | SEC |
| May 13, 20244:05 PM ET | MaNa Fund LLCBoard Member | 3.95K | $1.49M | May 13, 2024 | UBS Financial Services Inc | SEC |
| Apr 26, 20243:48 PM ET | MaNa Fund LLCBoard Member | 400 | $144.3K | Apr 26, 2024 | UBS Financial Services Inc | SEC |
| Apr 25, 20244:04 PM ET | Mark L. WilsonBoard Member | 1.50K | $545.5K | Apr 25, 2024 | UBS Financial Services Inc | SEC |
Showing the latest 25. See the WINA notices from the last 12 months