Sphere 3D's top three insider shareholders as of August 04, 2026 are Kurt L. Kalbfleisch (Ceo And Cfo, 64.45K shares), Patricia Trompeter (Ceo, 53.22K shares), Timothy P. Hanley (Director, 19.97K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Kurt L. Kalbfleisch | Ceo And Cfo | 64,455 | 0 | 64,455 | 37.9% | 13 Mar, 2026 |
| 2 | Patricia Trompeter | Ceo | 53,219 | 0 | 53,219 | 31.3% | 13 Dec, 2024 |
| 3 | Sue Harnett | Director | 19,971 | 0 | 19,971 | 11.7% | 16 May, 2025 |
| 4 | Timothy P. Hanley | Director | 19,971 | 0 | 19,971 | 11.7% | 16 May, 2025 |
| 5 | Tiah Norton Reppas | Chief Accounting Officer | 12,384 | 0 | 12,384 | 7.3% | 13 Mar, 2026 |
| 6 | Joseph O'Daniel | President | 152 | 0 | 152 | 0.1% | 05 Dec, 2023 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 11 Mar, 2026 | Tiah Norton Reppas | Chief Accounting Officer | Acquired M | 16,250 | — | — | 18,634 | Direct |
| 12 Mar, 2026 | Kurt L. Kalbfleisch | Ceo And Cfo | Acquired M | 18,358 | — | — | 74,255 | Direct |
| 13 Mar, 2026 | Kurt L. Kalbfleisch | Ceo And Cfo | Disposed S | 9,800 | $1.59 | $15.58K | 64,455 | Direct |
| 12 Mar, 2026 | Tiah Norton Reppas | Chief Accounting Officer | Disposed S | 6,250 | $1.61 | $10.06K | 12,384 | Direct |
| 11 Mar, 2026 | Tiah Norton Reppas | Chief Accounting Officer | Disposed M | 16,250 | — | — | 90,000 | Direct |
| 12 Mar, 2026 | Kurt L. Kalbfleisch | Ceo And Cfo | Disposed M | 18,358 | — | — | 229,297 | Direct |
| 04 Mar, 2026 | Sue Harnett | Director | Acquired A | 74,074 | — | — | 86,704 | Direct |
| 04 Mar, 2026 | Timothy P. Hanley | Director | Acquired A | 74,074 | — | — | 86,704 | Direct |
| 04 Mar, 2026 | Duncan J Mcewan | Director | Acquired A | 74,074 | — | — | 74,074 | Direct |
| 04 Mar, 2026 | Kurt L. Kalbfleisch | Ceo And Cfo | Acquired A | 150,000 | — | — | 247,655 | Direct |
| 04 Mar, 2026 | Tiah Norton Reppas | Chief Accounting Officer | Acquired A | 50,000 | — | — | 106,250 | Direct |
| 08 Dec, 2025 | Kurt L. Kalbfleisch | Chief Executive Officer | Acquired M | 183,594 | — | — | 64,896 | Direct |
| 09 Dec, 2025 | Kurt L. Kalbfleisch | Chief Executive Officer | Disposed S | 90,000 | $4.66 | $419.22K | 55,896 | Direct |
| 08 Dec, 2025 | Kurt L. Kalbfleisch | Chief Executive Officer | Disposed M | 183,594 | — | — | 97,656 | Direct |
| 03 Sep, 2025 | Kurt L. Kalbfleisch | Acting Ceo And Cfo | Acquired M | 195,201 | — | — | 55,038 | Direct |
| 03 Sep, 2025 | Kurt L. Kalbfleisch | Acting Ceo And Cfo | Disposed F | 85,010 | $6.07 | $515.93K | 46,537 | Direct |
| 03 Sep, 2025 | Kurt L. Kalbfleisch | Acting Ceo And Cfo | Disposed M | 195,201 | — | — | 116,016 | Direct |
| 05 Jun, 2025 | Kurt L. Kalbfleisch | Acting Ceo And Cfo | Acquired M | 339,844 | — | — | 48,959 | Direct |
| 05 Jun, 2025 | Kurt L. Kalbfleisch | Acting Ceo And Cfo | Disposed F | 134,406 | $7.39 | $993.26K | 35,518 | Direct |
| 05 Jun, 2025 | Kurt L. Kalbfleisch | Acting Ceo And Cfo | Disposed M | 339,844 | — | — | 135,536 | Direct |