Kurt L. Kalbfleisch sold $42k of DRK
Chief Executive Officer at Sphere 3D Corp.. 90,000 shares at an average of $0.47, traded Dec 9, 2025, filed Dec 10, 2025.
Score components
- +25RoleCEO
- +6Trade size$42k at market
- +5Share of holdings soldSold 14% of holdings
- 0ClusterNo other insider selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
What happened after comparable sells
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 -33.7%, 3m -67.1%, 6m -41.6%.
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 0001062993-25-017276, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 8, 2025 | MOption exercise Common Stock | +183,594 | - | - | 648,964 | Dec 10, 2025 |
| Dec 9, 2025 | SOpen-market sale Common Stock | -90,000 | $0.47 | $42k | 558,964 | Dec 10, 2025 |
| Dec 8, 2025 | MOption exercise Restricted Stock Unit (RSU)derivative | -183,594 | - | - | 976,561 | Dec 10, 2025 |
Related signals
Other insiders at Sphere 3D Corp. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 23Weak | Sphere 3D Corp. | Kurt L. Kalbfleisch CEO and CFO | $16k 9,800 shares | -13% | |
| 18Weak | Sphere 3D Corp. | Tiah Norton Reppas Chief Accounting Officer | $10k 6,250 shares | -34% | |
| 39Weak | Sphere 3D Corp. | Patricia Trompeter CEO | $42k 35,000 shares | -6% | |
| 15Weak | Sphere 3D Corp. | Kurt L. Kalbfleisch SVP and CFO | $7,883 6,000 shares | -4% | |
| 26Weak | Sphere 3D Corp. | Patricia Trompeter CEO | $65k 50,000 shares | -8% | |
| 7Weak | DRKsell Sphere 3D Corp. | Kurt L. Kalbfleisch SVP and CFO | $10k 11,000 shares | -7% | |
| 49Moderate | Sphere 3D Corp. | Patricia Trompeter CEO | $144k 120,000 shares | -22% | |
| 35Weak | Sphere 3D Corp. | Kurt L. Kalbfleisch SVP and CFO | $93k 80,000 shares | -39% | |
| 34Weak | Sphere 3D Corp. | Patricia Trompeter CEO | $171k 150,000 shares | -21% | |
| 35Weak | Sphere 3D Corp. | Kurt L. Kalbfleisch SVP and CFO | $16k 10,070 shares | -13% |
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.