Kalbfleisch Kurt L. 4
4 · Sphere 3D Corp. · Filed Dec 10, 2025
Insider Transaction Report
Form 4
Kalbfleisch Kurt L.
Acting CEO and CFO
Transactions
- Exercise/Conversion
Common Stock
2025-12-08+183,594→ 648,964 total - Sale
Common Stock
2025-12-09$0.47/sh−90,000$41,922→ 558,964 total - Exercise/Conversion
Restricted Stock Unit (RSU)
2025-12-08−183,594→ 976,561 total→ Common Stock (183,594 underlying)
Holdings
- 2,142(indirect: By Daughter)
Common Stock
Footnotes (4)
- [F1]Each RSU represents a contingent right to receive one share of Sphere 3D Corp. common stock.
- [F2]This transaction represents the sale of shares by the reporting person to satisfy the issuer's tax withholding obligations in connection with the release of vested RSUs on December 8, 2025.
- [F3]11,719 RSUs vested on September 30, 2025, 78,125 RSUs vested on September 30, 2025 and 93,750 RSUs vested on December 1, 2025.
- [F4]The RSUs reported under Column 9 include three awards. The underlying shares and vesting schedules are as follows: (i) 78,125 shares vest each quarter beginning 12/31/2025 until 12/31/2026; (ii) 11,719 shares vest on 12/31/2025 and 11,717 shares vest on 3/31/2026; and (iii) 93,750 shares vest each quarter from 3/1/2025 until 6/1/2027.