Comparable stake leader
Edward K. Russell
SEC ownership of QUIDEL CORP /DE/
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000353569.
Disclosed value leader
Edward K. Russell
Comparable rows
0/4
Latest evidence
03 Feb 2022
- Parsed ownership sources
-
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Edward K. Russell
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
03 Feb 2022
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000353569
- Issuer location
- San Diego, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of QUIDEL CORP /DE/ (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
Edward K. Russell
Disclosed value leader
Edward K. Russell
Comparable rows
0/4
Latest evidence
03 Feb 2022
3/4/5
Highest disclosed value: $457,271
4 rows are not safely comparable across share classes.
Quick read
Edward K. Russell has the largest disclosed position value at $457.3K.
0 of 4 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 Edward K. Russell's linked filing trail.
Disclosed position value
Top 4
Edward K. Russell
$457.3K
Charles P. Slacik
$378.6K
Randall J. Steward
$359.5K
Kathy Ordonez
$45.6K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-4 of 4 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Edward K. Russell |
3/4/5
SVP, Business Development
|
—
class O/S missing
|
$457,271
29,070 shares
|
— | 16 Jan 2022 |
| Charles P. Slacik |
3/4/5
Director
|
—
class O/S missing
|
$378,574
24,067 shares
|
— | 25 Jan 2022 |
| Randall J. Steward |
3/4/5
Chief Financial Officer
|
—
mixed-class rows
|
$359,541
29,831 shares
mixed-class rows
|
— | 03 Feb 2022 |
| Kathy Ordonez |
3/4/5
Director
|
—
mixed-class rows
|
$45,554
4,989 shares
mixed-class rows
|
— | 18 May 2021 |
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 27 Jun 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 1-17 of 17 reporting-owner rows connected to QUIDEL CORP /DE/. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
Edward K. Russell
Net 12M change
$0
Latest report
27 May 2022
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Edward K. Russell | SVP, Business Development | $457,271 | Mixed | 16 Jan 2022 | ||
| Charles P. Slacik | Director | $378,574 | Mixed | 25 Jan 2022 | ||
| Randall J. Steward | Chief Financial Officer | $359,541 | Mixed | 03 Feb 2022 | ||
| Kathy Ordonez | Director | $45,554 | Mixed | 18 May 2021 | ||
| Edward L. Michael | Director | Mixed | 27 May 2022 | |||
| Douglas C. Bryant | President & CEO, Director | Mixed | 27 May 2022 | |||
| WIDDER KENNETH J | Director | Mixed | 27 May 2022 | |||
| Kenneth F. Buechler | Director | Mixed | 27 May 2022 | |||
| Ann D. Rhoads | Director | Mixed | 27 May 2022 | |||
| Michelle A. Hodges | SVP, General Counsel | Mixed | 27 May 2022 | |||
| Robert J. Bujarski | Chief Operating Officer | Mixed | 27 May 2022 | |||
| Joseph D. Wilkins Jr. | Director | Mixed | 27 May 2022 | |||
| Ph.D. Mary Lake Polan | Director | Mixed | 27 May 2022 | |||
| Tamara A. Ranalli | SVP, Molecular Bus. Unit | Mixed | 27 May 2022 | |||
| William J. Ferenczy | SVP, Cardio/Metabolic Unit | Mixed | 27 May 2022 | |||
| Werner Kroll | Svp, R&D | Mixed | 27 May 2022 | |||
| Matthew W. Strobeck | Director | Mixed | 27 May 2022 |
Recent insider transactions for QUIDEL CORP /DE/
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.