As of August 29, 2026, the three largest insider holders of TECX are Timothy A Springer (Director, 5.84Mn shares), Geoffrey Mackay (President Ceo, 633.13K shares), Terrance Mcguire (Director, 573.06K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Timothy A Springer | Director, TenPercentOwner | 4,334,846 | 1,503,358 | 5,838,204 | 75.0% | 11 Apr, 2025 |
| 2 | Geoffrey Mackay | President Ceo | 188,012 | 445,123 | 633,135 | 8.1% | 26 Jan, 2023 |
| 3 | Terrance Mcguire | Director | 0 | 573,062 | 573,062 | 7.4% | 07 Apr, 2025 |
| 4 | Alise Reicin | Chief Executive Officer | 310,623 | 0 | 310,623 | 4.0% | 23 Jun, 2026 |
| 5 | Marcella K. Ruddy | Chief Medical Officer | 67,682 | 0 | 67,682 | 0.9% | 06 May, 2026 |
| 6 | Daniel Lochner | Chief Financial Officer | 58,544 | 0 | 58,544 | 0.8% | 05 Mar, 2026 |
| 7 | Azadeh Golipour | Chief Technology Officer | 55,872 | 0 | 55,872 | 0.7% | 05 Feb, 2024 |
| 8 | Peter Mcnamara | Chief Scientific Officer | 55,285 | 0 | 55,285 | 0.7% | 26 Aug, 2026 |
| 9 | Marc Schwabish | Chief Business Officer | 45,314 | 0 | 45,314 | 0.6% | 05 Mar, 2026 |
| 10 | Braden Michael Leonard | Other | 2,778 | 33,362 | 36,139 | 0.5% | 25 Jun, 2024 |
| 11 | Erik Ostrowski | Interim Ceo, President And Cfo | 29,285 | 0 | 29,285 | 0.4% | 05 Feb, 2024 |
| 12 | Stefan Vitorovic | Director | 0 | 27,774 | 27,774 | 0.4% | 24 Jun, 2024 |
| 13 | Steven Avruch | Chief Legal Officer | 22,022 | 0 | 22,022 | 0.3% | 05 Feb, 2024 |
| 14 | Essra Ridha | Chief Medical Officer | 15,881 | 0 | 15,881 | 0.2% | 05 Feb, 2024 |
| 15 | Christian Cortis | Chief Operating Officer | 10,530 | 0 | 10,530 | 0.1% | 24 Jun, 2024 |
| 16 | Philip J. Vickers | Director | 4,800 | 0 | 4,800 | 0.1% | 08 Jul, 2021 |
| 17 | Praveen P. Tipirneni | Director | 3,037 | 0 | 3,037 | 0.0% | 24 Jun, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 25 Aug, 2026 | Peter Mcnamara | Chief Scientific Officer | Acquired M | 43 | $14.71 | $633 | 55,328 | Direct |
| 25 Aug, 2026 | Peter Mcnamara | Chief Scientific Officer | Disposed S | 43 | $36.52 | $1.57K | 55,285 | Direct |
| 25 Aug, 2026 | Peter Mcnamara | Chief Scientific Officer | Disposed M | 43 | $0.00 | $0 | 7,787 | Direct |
| 12 Aug, 2026 | Peter Mcnamara | Chief Scientific Officer | Acquired M | 43 | $14.71 | $633 | 55,328 | Direct |
| 12 Aug, 2026 | Peter Mcnamara | Chief Scientific Officer | Disposed S | 43 | $35.00 | $1.51K | 55,285 | Direct |
| 12 Aug, 2026 | Peter Mcnamara | Chief Scientific Officer | Disposed M | 43 | $0.00 | $0 | 7,830 | Direct |
| 30 Jun, 2026 | Peter Mcnamara | Chief Scientific Officer | Acquired M | 172 | $14.71 | $2.53K | 55,457 | Direct |
| 30 Jun, 2026 | Peter Mcnamara | Chief Scientific Officer | Disposed S | 172 | $35.00 | $6.02K | 55,285 | Direct |
| 30 Jun, 2026 | Peter Mcnamara | Chief Scientific Officer | Disposed M | 172 | $0.00 | $0 | 7,873 | Direct |
| 20 Jun, 2026 | Alise Reicin | Chief Executive Officer | Disposed F | 924 | $30.34 | $28.03K | 310,623 | Direct |
| 11 Jun, 2026 | Daniel Lochner | Chief Financial Officer | Acquired A | 7,500 | $0.00 | $0 | 7,500 | Direct |
| 09 Jun, 2026 | Timothy A Springer | Director, TenPercentOwner | Acquired A | 10,200 | $0.00 | $0 | 10,200 | Direct |
| 08 Jun, 2026 | Jessica Caroline Chutter | Director | Acquired A | 20,400 | $0.00 | $0 | 20,400 | Direct |
| 09 Jun, 2026 | Praveen P. Tipirneni | Director | Acquired A | 10,200 | $0.00 | $0 | 10,200 | Direct |
| 09 Jun, 2026 | Phillip B. Donenberg | Director | Acquired A | 10,200 | $0.00 | $0 | 10,200 | Direct |
| 09 Jun, 2026 | Stefan Vitorovic | Director | Acquired A | 10,200 | $0.00 | $0 | 10,200 | Direct |
| 04 May, 2026 | Marcella K. Ruddy | Chief Medical Officer | Disposed S | 1,065 | $30.00 | $31.95K | 67,682 | Direct |
| 01 Apr, 2026 | Marcella K. Ruddy | Chief Medical Officer | Disposed S | 1,000 | $31.05 | $31.05K | 68,747 | Direct |
| 01 Apr, 2026 | Francois Nader | Director | Acquired A | 20,400 | $0.00 | $0 | 20,400 | Direct |
| 06 Mar, 2026 | Marcella K. Ruddy | Chief Medical Officer | Disposed S | 10,000 | $30.00 | $300.00K | 69,747 | Direct |