← United States · Coverage record
US · SEC FORM 4
QuidelOrtho Corp
QDEL · Nasdaq · CIK 0001906324 · Healthcare · Medical Devices
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
36 Form 4 transaction lines observed in the same window
0 sales · 36 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 8 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-02-13 · Busky Joseph M..
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 14,953,442
- Previous report
- 14,190,525
- Avg daily volume
- 1,362,233
- Days to cover
- 11.0
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-02-13 | Busky Joseph M. | Purchase (P) | Common Stock | 3,370 | USD 23.66 | USD 79,734 | SEC filing ↗ |
| 2026-02-13 | Strobeck Matthew | Purchase (P) | Common Stock | 10,000 | USD 23.96 | USD 239,600 | SEC filing ↗ |
| 2026-02-13 | Busky Joseph M. | Purchase (P) | Common Stock | 3,370 | USD 23.66 | USD 79,734 | SEC filing ↗ |
| 2026-02-13 | Blaser Brian J. | Purchase (P) | Common Stock | 10,540 | USD 23.59 | USD 248,639 | SEC filing ↗ |
| 2025-12-10 | RHOADS ANN D | Purchase (P) | Common Stock | 750 | USD 28.28 | USD 21,210 | SEC filing ↗ |
| 2025-11-26 | Wilkins Joseph D Jr. | Purchase (P) | Common Stock | 370 | USD 27.96 | USD 10,345 | SEC filing ↗ |
| 2025-11-24 | Busky Joseph M. | Purchase (P) | Common Stock | 4,770 | USD 26.06 | USD 124,306 | SEC filing ↗ |
| 2025-11-21 | POLAN MARY LAKE PH D | Purchase (P) | Common Stock | 1,000 | USD 22.43 | USD 22,430 | SEC filing ↗ |
| 2025-11-19 | Blaser Brian J. | Purchase (P) | Common Stock | 23,500 | USD 21.34 | USD 501,490 | SEC filing ↗ |
| 2024-12-11 | Blaser Brian J. | Purchase (P) | Common Stock | 6,033 | USD 41.42 | USD 249,887 | SEC filing ↗ |
| 2024-02-23 | Busky Joseph M | Purchase (P) | Common Stock | 2,150 | USD 46.36 | USD 99,674 | SEC filing ↗ |
Form 4 evidence
79 transaction lines in the latest 365-day window; 474 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | Bowman Ronald Lee | Option exercise / conversion (M) | Common Stock | 2,566 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-15 | Bowman Ronald Lee | Tax withholding (F) | Common Stock | 921 | USD 10.63 | USD 9,790 | SEC filing ↗ |
| 2026-08-15 | Hanson Bryan Michael | Option exercise / conversion (M) | Common Stock | 446 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | Bowman Ronald Lee | Option exercise / conversion (M) | Common Stock | 2,566 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-15 | Bowman Ronald Lee | Tax withholding (F) | Common Stock | 921 | USD 10.63 | USD 9,790 | SEC filing ↗ |
| 2026-08-15 | Hanson Bryan Michael | Option exercise / conversion (M) | Common Stock | 446 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-15 | Hanson Bryan Michael | Tax withholding (F) | Common Stock | 162 | USD 14.30 | USD 2,317 | SEC filing ↗ |
| 2026-07-01 | Hanson Bryan Michael | Option exercise / conversion (M) | Common Stock | 5,797 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-07-01 | Hanson Bryan Michael | Tax withholding (F) | Common Stock | 2,096 | USD 18.18 | USD 38,105 | SEC filing ↗ |
| 2026-06-06 | WIDDER KENNETH J | Award / grant (A) | Common Stock | 1,183 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-06 | POLAN MARY LAKE PH D | Award / grant (A) | Common Stock | 973 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-06 | Michael Edward L. | Award / grant (A) | Common Stock | 1,252 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-06 | BUECHLER KENNETH F | Award / grant (A) | Common Stock | 2,156 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | Wilkins Joseph D Jr. | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | WIDDER KENNETH J | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | Strobeck Matthew | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | RHOADS ANN D | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | POLAN MARY LAKE PH D | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | Michael Edward L. | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | Huennekens R Scott | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | Dilsaver Evelyn S | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | Chiminski John R | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-29 | BUECHLER KENNETH F | Award / grant (A) | Common Stock | 6,829 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-22 | RHOADS ANN D | Award / grant (A) | Common Stock | 1,407 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-15 | Blaser Brian J. | Tax withholding (F) | Common Stock | 10,252 | USD 10.32 | USD 105,801 | SEC filing ↗ |
| 2026-05-15 | Blaser Brian J. | Award / grant (A) | Common Stock | 20,759 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-26 | McLellan Philip D. | Tax withholding (F) | Common Stock | 699 | USD 11.59 | USD 8,101 | SEC filing ↗ |
| 2026-04-26 | McLellan Philip D. | Award / grant (A) | Common Stock | 1,946 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-26 | Hanson Bryan Michael | Tax withholding (F) | Common Stock | 528 | USD 11.59 | USD 6,120 | SEC filing ↗ |
| 2026-04-26 | Hanson Bryan Michael | Award / grant (A) | Common Stock | 1,459 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-22 | McLellan Philip D. | Tax withholding (F) | Common Stock | 1,162 | USD 11.90 | USD 13,828 | SEC filing ↗ |
| 2026-04-22 | McLellan Philip D. | Award / grant (A) | Common Stock | 3,238 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-22 | Hanson Bryan Michael | Tax withholding (F) | Common Stock | 1,269 | USD 11.90 | USD 15,101 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | QDEL |
| CIK | 0001906324 |
| Sector | Healthcare |
| Industry | Medical Devices Yahoo Finance |
| SEC SIC | 2835 In Vitro & In Vivo Diagnostic Substances |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 474 transaction lines from 2020-08-28 to 2026-09-15 11 P purchase lines · 106 S sale lines · 357 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.