NEKTAR THERAPEUTICS — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Zalevsky Jonathan | Chief R&D Officer | Award / Grant | 6,250 | — | — | 25,221 | Dec 22, 2025 |
| ROBIN HOWARD W | President & CEO | Award / Grant | 21,667 | — | — | 75,912 | Dec 22, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | Award / Grant | 2,666 | — | — | 20,128 | Nov 25, 2025 |
| ROBIN HOWARD W | President & CEO | Award / Grant | 7,110 | — | — | 56,452 | Nov 25, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 630 | $54.28 | $34,196 | 21,585 | Nov 21, 2025 |
| ROBIN HOWARD W | President & CEO | Sale | 1,210 | $48.18 | $58,298 | 49,342 | Sep 9, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 432 | $33.60 | $14,515 | 17,958 | Sep 4, 2025 |
| ROBIN HOWARD W | President & CEO | Sale | 1,136 | $39.89 | $45,315 | 56,008 | Sep 4, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 485 | $30.10 | $14,599 | 19,183 | Sep 2, 2025 |
| ROBIN HOWARD W | President & CEO | Sale | 1,500 | $30.16 | $45,240 | 67,840 | Sep 2, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 725 | $26.59 | $19,278 | 19,668 | Aug 19, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 676 | $26.59 | $17,975 | 20,312 | Aug 19, 2025 |
| ROBIN HOWARD W | President & CEO | Sale | 1,573 | $26.59 | $41,826 | 69,340 | Aug 19, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 10,712 | $0.67 | $7,177 | 305,892 | May 19, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 9,996 | $0.67 | $6,697 | 314,296 | May 19, 2025 |
| ROBIN HOWARD W | President & CEO | Sale | 23,208 | $0.67 | $15,549 | 1,063,693 | May 19, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 10,300 | $1.01 | $10,403 | 316,604 | Feb 19, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 11,040 | $1.01 | $11,150 | 324,292 | Feb 19, 2025 |
| ROBIN HOWARD W | President & CEO | Sale | 23,774 | $1.01 | $24,012 | 1,086,901 | Feb 19, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 33,402 | $0.90 | $30,062 | 351,892 | Dec 24, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 51,115 | $0.94 | $48,048 | 326,904 | Dec 19, 2024 |
| ROBIN HOWARD W | President & CEO | Sale | 85,035 | $0.99 | $84,185 | 1,110,675 | Dec 17, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Award / Grant | 135,000 | — | — | 378,019 | Dec 13, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | Award / Grant | 165,938 | — | — | 385,294 | Dec 13, 2024 |
| ROBIN HOWARD W | President & CEO | Award / Grant | 410,625 | — | — | 1,242,705 | Dec 13, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 7,785 | $1.01 | $7,863 | 243,019 | Nov 19, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 6,407 | $1.01 | $6,471 | 218,856 | Nov 19, 2024 |
| ROBIN HOWARD W | President & CEO | Sale | 16,278 | $1.01 | $16,441 | 832,080 | Nov 19, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 6,866 | $1.28 | $8,788 | 250,804 | Aug 19, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 5,651 | $1.28 | $7,233 | 225,263 | Aug 19, 2024 |
| ROBIN HOWARD W | President & CEO | Sale | 14,881 | $1.28 | $19,048 | 848,358 | Aug 19, 2024 |
| CHESS ROBERT | — | Sale | 19,500 | $1.20 | $23,400 | 255,273 | Jun 14, 2024 |
| ROBIN HOWARD W | President & CEO | Sale | 16,650 | $1.75 | $29,138 | 863,239 | May 17, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 7,355 | $1.75 | $12,871 | 257,670 | May 17, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 6,260 | $1.75 | $10,955 | 230,414 | May 17, 2024 |
| KROIN DAVID | — | Sale | 56,000 | $1.78 | $99,680 | 18,344,000 | May 10, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 9,014 | $0.68 | $6,130 | 265,025 | Feb 20, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 7,606 | $0.68 | $5,172 | 236,674 | Feb 20, 2024 |
| ROBIN HOWARD W | President & CEO | Sale | 20,033 | $0.68 | $13,622 | 879,889 | Feb 20, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 9,646 | $0.49 | $4,727 | 274,039 | Nov 17, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 7,179 | $0.49 | $3,518 | 243,780 | Nov 17, 2023 |
| ROBIN HOWARD W | President & CEO | Sale | 19,877 | $0.49 | $9,740 | 899,922 | Nov 17, 2023 |
| Curet Myriam | — | Sale | 4,359 | $0.69 | $3,008 | 27,418 | Sep 18, 2023 |
| Ajer Jeffrey Robert | — | Sale | 4,359 | $0.69 | $3,008 | 34,153 | Sep 18, 2023 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 9,703 | $0.78 | $7,568 | 283,685 | Aug 16, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 7,221 | $0.78 | $5,632 | 250,959 | Aug 16, 2023 |
| ROBIN HOWARD W | President & CEO | Sale | 19,998 | $0.78 | $15,598 | 919,799 | Aug 16, 2023 |
| WHITFIELD ROY A | — | Sale | 30,000 | $0.57 | $17,100 | 216,250 | Jun 14, 2023 |
| Zalevsky Jonathan | Chief R&D Officer | Sale | 9,791 | $0.72 | $7,050 | 293,388 | May 16, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | Sale | 7,543 | $0.72 | $5,431 | 257,680 | May 16, 2023 |