Over the past 12 months, Nektar Therapeutics insiders sold $2.43 million of stock on the open market (40.93K shares) and made no open-market purchases.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Track Capital, Lp Deep | TenPercentOwner | 0 | 1,222,994 | 1,222,994 | 85.2% | 13 May, 2024 |
| 2 | Howard W Robin | President Ceo | 54,627 | 0 | 54,627 | 3.8% | 20 Aug, 2026 |
| 3 | R Scott Greer | Director | 22,239 | 0 | 22,239 | 1.6% | 25 Sep, 2026 |
| 4 | Mark Andrew Wilson | Chief Legal Officer | 21,585 | 0 | 21,585 | 1.5% | 25 Nov, 2025 |
| 5 | Jillian B. Thomsen | Chief Financial Officer | 20,901 | 0 | 20,901 | 1.5% | 17 Feb, 2023 |
| 6 | Gil M Labrucherie | Svp, Coo Cfo | 20,861 | 0 | 20,861 | 1.5% | 17 May, 2022 |
| 7 | Robert Chess | Chairman Of The Board | 19,019 | 0 | 19,019 | 1.3% | 25 Sep, 2026 |
| 8 | Roy A Whitfield | Director | 16,417 | 0 | 16,417 | 1.1% | 25 Sep, 2026 |
| 9 | John Northcott | Svp Chief Commercial Officer | 14,881 | 0 | 14,881 | 1.0% | 17 May, 2022 |
| 10 | Jonathan Zalevsky | Chief Rd Officer | 9,570 | 0 | 9,570 | 0.7% | 20 Aug, 2026 |
| 11 | Jeffrey Robert Ajer | Director | 4,277 | 0 | 4,277 | 0.3% | 25 Sep, 2026 |
| 12 | Diana Brainard | Director | 3,904 | 0 | 3,904 | 0.3% | 25 Sep, 2026 |
| 13 | Myriam Curet | Director | 1,828 | 0 | 1,828 | 0.1% | 20 Sep, 2023 |
| 14 | Karin Eastham | Director | 1,549 | 0 | 1,549 | 0.1% | 20 Sep, 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 |
|---|---|---|---|---|---|---|---|---|
| 23 Sep, 2026 | Robert Chess | Director | Acquired A | 2,000 | $0.00 | $0 | 19,019 | Direct |
| 23 Sep, 2026 | Jeffrey Robert Ajer | Director | Acquired A | 2,000 | $0.00 | $0 | 4,277 | Direct |
| 23 Sep, 2026 | R Scott Greer | Director | Acquired A | 2,000 | $0.00 | $0 | 22,239 | Direct |
| 23 Sep, 2026 | Diana Brainard | Director | Acquired A | 2,000 | $0.00 | $0 | 3,904 | Direct |
| 23 Sep, 2026 | Roy A Whitfield | Director | Acquired A | 2,000 | $0.00 | $0 | 16,417 | Direct |
| 23 Sep, 2026 | R Scott Greer | Director | Acquired A | 4,000 | $0.00 | $0 | 4,000 | Direct |
| 23 Sep, 2026 | Diana Brainard | Director | Acquired A | 4,000 | $0.00 | $0 | 4,000 | Direct |
| 23 Sep, 2026 | Jeffrey Robert Ajer | Director | Acquired A | 4,000 | $0.00 | $0 | 4,000 | Direct |
| 23 Sep, 2026 | Roy A Whitfield | Director | Acquired A | 4,000 | $0.00 | $0 | 4,000 | Direct |
| 23 Sep, 2026 | Robert Chess | Director | Acquired A | 4,000 | $0.00 | $0 | 4,000 | Direct |
| 18 Aug, 2026 | Jonathan Zalevsky | Chief Rd Officer | Disposed S | 186 | $71.98 | $13.39K | 9,570 | Direct |
| 18 Aug, 2026 | Howard W Robin | President Ceo | Disposed S | 418 | $71.98 | $30.09K | 54,627 | Direct |
| 24 Jul, 2026 | Jonathan Zalevsky | Chief Rd Officer | Acquired A | 16,500 | $0.00 | $0 | 16,500 | Direct |
| 24 Jul, 2026 | Howard W Robin | President Ceo | Acquired A | 57,200 | $0.00 | $0 | 57,200 | Direct |
| 30 Jun, 2026 | Jonathan Zalevsky | Chief Rd Officer | Disposed S | 5,681 | $70.00 | $397.67K | 9,756 | Direct |
| 16 Jun, 2026 | Howard W Robin | President Ceo | Disposed S | 5,303 | $59.97 | $318.02K | 69,742 | Direct |
| 16 Jun, 2026 | Howard W Robin | President Ceo | Disposed S | 4,697 | $60.71 | $285.15K | 65,045 | Direct |
| 17 Jun, 2026 | Howard W Robin | President Ceo | Disposed S | 5,500 | $60.81 | $334.46K | 59,545 | Direct |
| 17 Jun, 2026 | Howard W Robin | President Ceo | Disposed S | 4,500 | $61.65 | $277.43K | 55,045 | Direct |
| 15 Jun, 2026 | Jonathan Zalevsky | Chief Rd Officer | Disposed S | 5,538 | $60.71 | $336.21K | 15,437 | Direct |