Brian J Blaser bought $502k of QDEL
President and CEO at QuidelOrtho Corp. 23,500 shares at an average of $21.34, traded Nov 19, 2025, filed Nov 20, 2025.
Score components
- +25RoleCEO
- +18Trade size$502k at market
- +10Relative to holdingsHoldings up 390%
- +18Price context6% above the 52-week low; 56% below the 52-week high
- +15Cluster4 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +35.9%, 3m +10.8%, 6m -41.9%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001492289-25-000006, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Nov 19, 2025 | POpen-market purchase Common Stockindirect: By Trust | +23,500 | $21.34 | $502k | 29,533 | Nov 20, 2025 |
Related signals
Other insiders at QuidelOrtho Corp and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 65Notable | QuidelOrtho Corp | Joseph M Busky Chief Financial Officer | $80k 3,370 shares | +49% | |
| 72Notable | QuidelOrtho Corp | Brian J Blaser President and CEO | $249k 10,540 shares | +36% | |
| 65Notable | QuidelOrtho Corp | Joseph M Busky Chief Financial Officer | $80k 3,370 shares | +49% | |
| 61Notable | QuidelOrtho Corp | Matthew Strobeck director | $240k 10,000 shares | +56% | |
| 34Weak | QuidelOrtho Corp | Ann D Rhoads director | $21k 750 shares | +5% | |
| 38Weak | QuidelOrtho Corp | Joseph D Wilkins Jr. director | $10k 370 shares | +3% | |
| 65Notable | QuidelOrtho Corp | Joseph M Busky Chief Financial Officer | $124k 4,770 shares | +222% | |
| 10Weak | QDELsell QuidelOrtho Corp | Kenneth J Widder director | $112k 4,026 shares | -10% | |
| 41Moderate | QuidelOrtho Corp | Mary Lake Ph D Polan director | $22k 1,000 shares | +9% | |
| 46Moderate | QDELbuy QuidelOrtho Corp | Brian J Blaser President and CEO | $250k 6,033 shares | - |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.