As of September 29, 2026, the three largest insider holders of NKTX are Capital Management, L.P. Ra (Director, 10.05Mn shares), Capital Management, L.P. Ra (Director, 7.81Mn shares), Simeon George (Director, 2.00Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital Management, L.P. Ra | Director, TenPercentOwner | 0 | 10,050,818 | 10,050,818 | 75.0% | 29 Mar, 2024 |
| 2 | Simeon George | Director | 0 | 2,000,000 | 2,000,000 | 14.9% | 28 Mar, 2024 |
| 3 | Paul J Hastings | Chief Executive Officer | 390,247 | 0 | 390,247 | 2.9% | 22 Jun, 2026 |
| 4 | David Shook | Chief Medical Officer | 190,955 | 0 | 190,955 | 1.4% | 17 Jan, 2025 |
| 5 | Nadir Mahmood | President | 167,727 | 0 | 167,727 | 1.3% | 20 Jan, 2026 |
| 6 | James Trager | Chief Scientific Officer | 150,959 | 0 | 150,959 | 1.1% | 20 Jun, 2024 |
| 7 | Alicia J. Hager | Chief Legal Officer | 146,735 | 0 | 146,735 | 1.1% | 17 Jan, 2025 |
| 8 | Ralph Brandenberger | Chief Technical Officer | 124,796 | 0 | 124,796 | 0.9% | 17 Jan, 2025 |
| 9 | Alyssa Levin | Officer | 102,662 | 0 | 102,662 | 0.8% | 17 Jan, 2025 |
| 10 | Shawn Marshall Rose | Officer | 70,000 | 0 | 70,000 | 0.5% | 08 Jan, 2026 |
| 11 | Kanya Rajangam | Chief Medical Officer | 12,800 | 0 | 12,800 | 0.1% | 19 Jan, 2022 |
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 |
|---|---|---|---|---|---|---|---|---|
| 18 Jun, 2026 | Paul J Hastings | Chief Executive Officer | Disposed S | 1,776 | $2.71 | $4.81K | 390,247 | Direct |
| 10 Jun, 2026 | Simeon George | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 10 Jun, 2026 | Zachary Scheiner | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 10 Jun, 2026 | Leone D Patterson | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 10 Jun, 2026 | Capital Management, L.P. Ra | Director, TenPercentOwner | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Indirect |
| 10 Jun, 2026 | Michael Dybbs | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 10 Jun, 2026 | Angela Thedinga | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 10 Jun, 2026 | George Vratsanos | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 10 Jun, 2026 | Ali Behbahani | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 15 Jan, 2026 | Paul J Hastings | Chief Executive Officer | Disposed S | 26,046 | $2.07 | $53.92K | 390,023 | Direct |
| 15 Jan, 2026 | Nadir Mahmood | President | Disposed S | 5,649 | $2.07 | $11.69K | 167,727 | Direct |
| 06 Jan, 2026 | Shawn Marshall Rose | Officer | Acquired A | 70,000 | $0.00 | $0 | 70,000 | Direct |
| 06 Jan, 2026 | Paul J Hastings | Chief Executive Officer | Acquired A | 94,000 | $0.00 | $0 | 416,069 | Direct |
| 06 Jan, 2026 | Nadir Mahmood | President | Acquired A | 80,000 | $0.00 | $0 | 173,376 | Direct |
| 06 Jan, 2026 | Shawn Marshall Rose | Officer | Acquired A | 139,000 | $0.00 | $0 | 139,000 | Direct |
| 06 Jan, 2026 | Nadir Mahmood | President | Acquired A | 160,000 | $0.00 | $0 | 160,000 | Direct |
| 06 Jan, 2026 | Paul J Hastings | Chief Executive Officer | Acquired A | 562,000 | $0.00 | $0 | 562,000 | Direct |
| 23 Jun, 2025 | Shawn Marshall Rose | Officer | Acquired A | 500,000 | $0.00 | $0 | 500,000 | Direct |
| 18 Jun, 2025 | Paul J Hastings | Chief Executive Officer | Disposed S | 1,790 | $1.79 | $3.20K | 320,069 | Direct |
| 05 Jun, 2025 | Paul J Hastings | Chief Executive Officer | Acquired A | 377,000 | $0.00 | $0 | 377,000 | Direct |