Comparable stake leader
GLAZER CAPITAL, LLC
SEC ownership of PATTERSON COMPANIES, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000891024.
Disclosed value leader
GLAZER CAPITAL, LLC
Comparable rows
1/12
Latest evidence
17 Apr 2025
- Parsed ownership sources
-
13D/G and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
GLAZER CAPITAL, LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
1 of 12
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
GLAZER CAPITAL, LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
17 Apr 2025
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000891024
- Issuer location
- St Paul, MN
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of PATTERSON COMPANIES, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
GLAZER CAPITAL, LLC
Disclosed value leader
GLAZER CAPITAL, LLC
Comparable rows
1/12
Latest evidence
17 Apr 2025
13D/G
3/4/5
Lead comparable stake: 5.2%
11 rows are not safely comparable across share classes.
13D/G row: GLAZER CAPITAL, LLC
Showing 1-8 of 12 holder rows.
Quick read
GLAZER CAPITAL, LLC leads the comparable SEC ownership view at 5.2%.
1 of 12 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens GLAZER CAPITAL, LLC's linked filing trail.
Comparable ownership
Top 1
GLAZER CAPITAL, LLC
5.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 12 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| GLAZER CAPITAL, LLC |
13D/G
|
5.2%
|
$145,215,271
4,635,023 shares
|
$0 | 24 Mar 2025 |
| Mark S. Walchirk |
3/4/5
President & CEO, Director
|
—
mixed-class rows
|
$8,090,480
420,129 shares
mixed-class rows
|
— | 01 Jul 2022 |
| Ellen A. Rudnick |
3/4/5
Director
|
—
class O/S missing
|
$2,057,934
75,715 shares
|
— | 11 Sep 2023 |
| Timothy E. Rogan |
3/4/5
President - Dental
|
—
mixed-class rows
|
$1,557,659
97,309 shares
mixed-class rows
|
— | 05 Oct 2023 |
| Eric R. Shirley |
3/4/5
President-Patterson Dental
|
—
mixed-class rows
|
$1,527,244
70,377 shares
mixed-class rows
|
— | 01 Jul 2021 |
| Andrea L. Frohning |
3/4/5
Chief Human Resources Officer
|
—
mixed-class rows
|
$1,096,904
50,366 shares
mixed-class rows
|
— | 06 Jul 2022 |
| Francis Joseph Malecha |
3/4/5
Director
|
—
class O/S missing
|
$547,079
20,128 shares
|
— | 13 Sep 2021 |
| Donald Zurbay |
3/4/5
President & CEO, Director
|
—
class O/S missing
|
—
99,250 shares
|
— | 17 Apr 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 28 Sep 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-19 of 19 reporting-owner rows connected to PATTERSON COMPANIES, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
19
Largest Forms 3/4/5 holder
Mark S. Walchirk
Net 12M change
$0
Latest report
17 Apr 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Mark S. Walchirk | President & CEO, Director | $8,090,480 | Mixed | 01 Jul 2022 | ||
| Ellen A. Rudnick | Director | $2,057,934 | Mixed | 11 Sep 2023 | ||
| Timothy E. Rogan | President - Dental | $1,557,659 | Mixed | 05 Oct 2023 | ||
| Eric R. Shirley | President-Patterson Dental | $1,527,244 | Mixed | 01 Jul 2021 | ||
| Andrea L. Frohning | Chief Human Resources Officer | $1,096,904 | Mixed | 06 Jul 2022 | ||
| Francis Joseph Malecha | Director | $547,079 | Mixed | 13 Sep 2021 | ||
| Donald Zurbay | President & CEO, Director | $0 | Mixed | 17 Apr 2025 | ||
| Robert Frenzel | Director | $0 | Mixed | 17 Apr 2025 | ||
| Neil A. Schrimsher | Director | $0 | Mixed | 17 Apr 2025 | ||
| John D. Buck | Director | $0 | Mixed | 17 Apr 2025 | ||
| Jody H. Feragen | Director | $0 | Mixed | 17 Apr 2025 | ||
| Kevin M. Pohlman | Chief Operating Officer | $0 | Mixed | 17 Apr 2025 | ||
| Philip McKoy | Director | $0 | Mixed | 17 Apr 2025 | ||
| Kevin Michael Barry | Cfo | $0 | Mixed | 17 Apr 2025 | ||
| Samantha L. Bergeson | Chro | $0 | Mixed | 17 Apr 2025 | ||
| Meenu Agarwal | Director | $0 | Mixed | 17 Apr 2025 | ||
| Les B. Korsh | CLO & Corporate Secretary | $0 | Mixed | 17 Apr 2025 | ||
| Alex N. Blanco | Director | $0 | Mixed | 17 Apr 2025 | ||
| Pamela J. Tomczik | Director | $0 | Mixed | 17 Apr 2025 |
Recent insider transactions for PATTERSON COMPANIES, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.