In the last 12 months, insiders at NEKTAR THERAPEUTICS ($NKTR) filed 83 transactions with the SEC: 0 open-market purchases totaling $0 and 51 sales totaling $1,903,780. Net insider sentiment: net selling.
NEKTAR THERAPEUTICS operates in the Pharmaceutical preparations industry (Life sciences sector).
Most Active Insiders
- ROBIN HOWARD W (President & CEO) — 31 transactions totaling $1,229,373
- Zalevsky Jonathan (Chief R&D Officer) — 24 transactions totaling $406,727
- Wilson Mark Andrew (Chief Legal Officer) — 16 transactions totaling $144,651
- Deep Track Capital, LP (Not found) — 1 transaction totaling $99,630
- CHESS ROBERT (Not found) — 3 transactions totaling $23,400
View all SEC Filings for NEKTAR THERAPEUTICS (NKTR).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 18, 2026 | ROBIN HOWARD W | President & CEO | S | Common Stock | 423 | $73.00 | 75,517.0000 | 18,946,559 | 0.56% | 0.00% |
| Feb. 18, 2026 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 180 | $73.00 | 21,174.0000 | 18,946,559 | 0.84% | 0.00% |
| Jan. 20, 2026 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 3867 | $35.67 | 21,354.0000 | 18,946,559 | 15.33% | 0.02% |
| Dec. 22, 2025 | ROBIN HOWARD W | President & CEO | A | Stock Option | 86667 | $0.00 | 86,667.0000 | 18,946,559 | 9999.99% | 0.46% |
| Dec. 22, 2025 | Zalevsky Jonathan | Chief R&D Officer | A | Stock Option | 25000 | $0.00 | 25,000.0000 | 18,946,559 | 9999.99% | 0.13% |
| Dec. 22, 2025 | Zalevsky Jonathan | Chief R&D Officer | A | Common Stock | 6250 | $0.00 | 25,221.0000 | 18,946,559 | 32.95% | 0.03% |
| Dec. 22, 2025 | ROBIN HOWARD W | President & CEO | A | Common Stock | 21667 | $0.00 | 75,940.0000 | 18,946,559 | 39.92% | 0.11% |
| Nov. 21, 2025 | Wilson Mark Andrew | Chief Legal Officer | A | Common Stock | 1903 | $0.00 | 22,215.0000 | 18,946,559 | 9.37% | 0.01% |
| Nov. 25, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 1157 | $54.28 | 18,971.0000 | 18,946,559 | 5.75% | 0.01% |
| Nov. 21, 2025 | Zalevsky Jonathan | Chief R&D Officer | A | Common Stock | 2666 | $0.00 | 20,128.0000 | 18,946,559 | 15.27% | 0.01% |
| Nov. 21, 2025 | ROBIN HOWARD W | President & CEO | A | Stock Option | 12170 | $0.00 | 12,170.0000 | 18,946,559 | 9999.99% | 0.06% |
| Nov. 25, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 2207 | $54.28 | 54,273.0000 | 18,946,559 | 3.91% | 0.01% |
| Nov. 21, 2025 | ROBIN HOWARD W | President & CEO | A | Common Stock | 7110 | $0.00 | 56,480.0000 | 18,946,559 | 14.40% | 0.04% |
| Nov. 21, 2025 | Wilson Mark Andrew | Chief Legal Officer | A | Stock Option | 3400 | $0.00 | 3,400.0000 | 18,946,559 | 9999.99% | 0.02% |
| Nov. 25, 2025 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 630 | $54.28 | 21,585.0000 | 18,946,559 | 2.84% | 0.00% |
| Nov. 21, 2025 | Zalevsky Jonathan | Chief R&D Officer | A | Stock Option | 4766 | $0.00 | 4,766.0000 | 18,946,559 | 9999.99% | 0.03% |
| Sept. 30, 2025 | CHESS ROBERT | Not found | A | Stock Option | 8000 | $0.00 | 8,000.0000 | 205,661,000 | 9999.99% | 0.00% |
| Sept. 30, 2025 | GREER R SCOTT | Not found | A | Stock Option | 8000 | $0.00 | 8,000.0000 | 205,661,000 | 9999.99% | 0.00% |
| Sept. 30, 2025 | WHITFIELD ROY A | Not found | A | Stock Option | 8000 | $0.00 | 8,000.0000 | 205,661,000 | 9999.99% | 0.00% |
| Sept. 30, 2025 | Ajer Jeffrey Robert | Not found | A | Stock Option | 8000 | $0.00 | 8,000.0000 | 205,661,000 | 9999.99% | 0.00% |
| Sept. 30, 2025 | Brainard Diana | Not found | A | Stock Option | 8000 | $0.00 | 8,000.0000 | 205,661,000 | 9999.99% | 0.00% |
| Sept. 9, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 2156 | $47.49 | 50,580.0000 | 205,661,000 | 4.09% | 0.00% |
| Sept. 9, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1200 | $46.41 | 52,736.0000 | 205,661,000 | 2.22% | 0.00% |
| Sept. 9, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1210 | $48.18 | 49,370.0000 | 205,661,000 | 2.39% | 0.00% |
| Sept. 9, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 2100 | $45.16 | 53,936.0000 | 205,661,000 | 3.75% | 0.00% |
| Sept. 4, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1923 | $32.37 | 65,945.0000 | 205,661,000 | 2.83% | 0.00% |
| Sept. 4, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 793 | $32.43 | 18,390.0000 | 205,661,000 | 4.13% | 0.00% |
| Sept. 5, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1136 | $39.89 | 56,036.0000 | 205,661,000 | 1.99% | 0.00% |
| Sept. 5, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 2226 | $38.82 | 57,172.0000 | 205,661,000 | 3.75% | 0.00% |
| Sept. 5, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 3304 | $37.87 | 59,398.0000 | 205,661,000 | 5.27% | 0.00% |
| Sept. 4, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1134 | $35.80 | 62,702.0000 | 205,661,000 | 1.78% | 0.00% |
| Sept. 4, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 613 | $34.40 | 63,836.0000 | 205,661,000 | 0.95% | 0.00% |
| Sept. 4, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1496 | $33.54 | 64,449.0000 | 205,661,000 | 2.27% | 0.00% |
| Sept. 4, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 307 | $35.69 | 17,462.0000 | 205,661,000 | 1.73% | 0.00% |
| Sept. 4, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 189 | $34.41 | 17,769.0000 | 205,661,000 | 1.05% | 0.00% |
| Sept. 4, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 432 | $33.60 | 17,958.0000 | 205,661,000 | 2.35% | 0.00% |
| Sept. 2, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 485 | $30.10 | 19,183.0000 | 205,661,000 | 2.47% | 0.00% |
| Sept. 2, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1500 | $30.16 | 67,868.0000 | 205,661,000 | 2.16% | 0.00% |
| Aug. 19, 2025 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 676 | $26.59 | 20,312.0000 | 205,661,000 | 3.22% | 0.00% |
| Aug. 19, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 725 | $26.59 | 19,668.0000 | 205,661,000 | 3.56% | 0.00% |
| Aug. 19, 2025 | Zalevsky Jonathan | Chief R&D Officer | A | Stock Option | 16666 | $0.00 | 16,666.0000 | 205,661,000 | 9999.99% | 0.01% |
| Aug. 19, 2025 | Wilson Mark Andrew | Chief Legal Officer | A | Stock Option | 21666 | $0.00 | 21,666.0000 | 205,661,000 | 9999.99% | 0.01% |
| Aug. 19, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 1573 | $26.59 | 69,368.0000 | 205,661,000 | 2.22% | 0.00% |
| Aug. 19, 2025 | ROBIN HOWARD W | President & CEO | A | Stock Option | 86666 | $0.00 | 86,666.0000 | 205,661,000 | 9999.99% | 0.04% |
| May 19, 2025 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 9996 | $0.67 | 314,296.0000 | 205,661,000 | 3.08% | 0.00% |
| May 19, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 23208 | $0.67 | 1,064,103.0000 | 205,661,000 | 2.13% | 0.01% |
| May 19, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 10712 | $0.67 | 305,892.0000 | 205,661,000 | 3.38% | 0.01% |
| Feb. 19, 2025 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 11040 | $1.01 | 324,292.0000 | 205,661,000 | 3.29% | 0.01% |
| Feb. 19, 2025 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 10300 | $1.01 | 316,604.0000 | 205,661,000 | 3.15% | 0.01% |
| Feb. 19, 2025 | ROBIN HOWARD W | President & CEO | S | Common Stock | 23774 | $1.01 | 1,087,311.0000 | 205,661,000 | 2.14% | 0.01% |
| Sept. 18, 2024 | Ajer Jeffrey Robert | Not found | A | Stock Option | 120000 | $0.00 | 120,000.0000 | 190,001,000 | 9999.99% | 0.06% |
| Sept. 18, 2024 | WHITFIELD ROY A | Not found | A | Stock Option | 120000 | $0.00 | 120,000.0000 | 190,001,000 | 9999.99% | 0.06% |
| Sept. 18, 2024 | GREER R SCOTT | Not found | A | Stock Option | 120000 | $0.00 | 120,000.0000 | 190,001,000 | 9999.99% | 0.06% |
| Sept. 18, 2024 | CHESS ROBERT | Not found | A | Stock Option | 120000 | $0.00 | 120,000.0000 | 190,001,000 | 9999.99% | 0.06% |
| Sept. 18, 2024 | Brainard Diana | Not found | A | Stock Option | 120000 | $0.00 | 120,000.0000 | 190,001,000 | 9999.99% | 0.06% |
| Dec. 24, 2024 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 16560 | $0.89 | 335,332.0000 | 13,949,851 | 4.71% | 0.12% |
| Dec. 23, 2024 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 33402 | $0.90 | 351,892.0000 | 13,949,851 | 8.67% | 0.24% |
| Dec. 19, 2024 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 51115 | $0.94 | 326,904.0000 | 13,949,851 | 13.52% | 0.37% |
| Dec. 17, 2024 | ROBIN HOWARD W | President & CEO | S | Common Stock | 46995 | $1.01 | 1,196,120.0000 | 13,949,851 | 3.78% | 0.34% |
| Dec. 18, 2024 | ROBIN HOWARD W | President & CEO | S | Common Stock | 85035 | $0.99 | 1,111,085.0000 | 13,949,851 | 7.11% | 0.61% |
| Dec. 13, 2024 | ROBIN HOWARD W | President & CEO | A | Common Stock | 410625 | $0.00 | 1,243,115.0000 | 13,949,851 | 49.32% | 2.94% |
| Dec. 13, 2024 | ROBIN HOWARD W | President & CEO | A | Stock Option | 1300000 | $0.00 | 1,300,000.0000 | 13,949,851 | 9999.99% | 9.32% |
| Dec. 13, 2024 | ROBIN HOWARD W | President & CEO | A | Stock Option | 821250 | $0.00 | 821,250.0000 | 13,949,851 | 9999.99% | 5.89% |
| Dec. 13, 2024 | Wilson Mark Andrew | Chief Legal Officer | A | Stock Option | 325000 | $0.00 | 325,000.0000 | 13,949,851 | 9999.99% | 2.33% |
| Dec. 13, 2024 | Wilson Mark Andrew | Chief Legal Officer | A | Stock Option | 331875 | $0.00 | 331,875.0000 | 13,949,851 | 9999.99% | 2.38% |
| Dec. 13, 2024 | Wilson Mark Andrew | Chief Legal Officer | A | Common Stock | 165938 | $0.00 | 385,294.0000 | 13,949,851 | 75.65% | 1.19% |
| Dec. 13, 2024 | Zalevsky Jonathan | Chief R&D Officer | A | Stock Option | 375000 | $0.00 | 375,000.0000 | 13,949,851 | 9999.99% | 2.69% |
| Dec. 13, 2024 | Zalevsky Jonathan | Chief R&D Officer | A | Stock Option | 270000 | $0.00 | 270,000.0000 | 13,949,851 | 9999.99% | 1.94% |
| Dec. 13, 2024 | Zalevsky Jonathan | Chief R&D Officer | A | Common Stock | 135000 | $0.00 | 378,019.0000 | 13,949,851 | 55.55% | 0.97% |
| Nov. 19, 2024 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 7785 | $1.01 | 243,019.0000 | 13,949,851 | 3.10% | 0.06% |
| Nov. 19, 2024 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 6407 | $1.01 | 218,856.0000 | 13,949,851 | 2.84% | 0.05% |
| Nov. 19, 2024 | ROBIN HOWARD W | President & CEO | S | Common Stock | 16278 | $1.01 | 832,490.0000 | 13,949,851 | 1.92% | 0.12% |
| Aug. 19, 2024 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 5651 | $1.28 | 225,263.0000 | 190,001,000 | 2.45% | 0.00% |
| Aug. 19, 2024 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 6866 | $1.28 | 250,804.0000 | 190,001,000 | 2.66% | 0.00% |
| Aug. 19, 2024 | ROBIN HOWARD W | President & CEO | S | Common Stock | 14881 | $1.28 | 848,768.0000 | 190,001,000 | 1.72% | 0.01% |
| June 14, 2024 | CHESS ROBERT | Not found | S | Common Stock | 19500 | $1.20 | 261,573.0000 | 190,001,000 | 6.94% | 0.01% |
| May 17, 2024 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 7355 | $1.75 | 257,670.0000 | 190,001,000 | 2.78% | 0.00% |
| May 17, 2024 | ROBIN HOWARD W | President & CEO | S | Common Stock | 16650 | $1.75 | 863,649.0000 | 190,001,000 | 1.89% | 0.01% |
| May 17, 2024 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 6260 | $1.75 | 230,414.0000 | 190,001,000 | 2.64% | 0.00% |
| May 10, 2024 | Deep Track Capital, LP | Not found | S | Common Stock | 56000 | $1.78 | 18,344,000.0000 | 190,001,000 | 0.30% | 0.03% |
| Feb. 20, 2024 | ROBIN HOWARD W | President & CEO | S | Common Stock | 20033 | $0.68 | 880,299.0000 | 190,001,000 | 2.23% | 0.01% |
| Feb. 20, 2024 | Wilson Mark Andrew | Chief Legal Officer | S | Common Stock | 7606 | $0.68 | 236,674.0000 | 190,001,000 | 3.11% | 0.00% |
| Feb. 20, 2024 | Zalevsky Jonathan | Chief R&D Officer | S | Common Stock | 9014 | $0.68 | 265,025.0000 | 190,001,000 | 3.29% | 0.00% |