NEKTAR THERAPEUTICS
Total Trades
82
Buys
0
Sells
71
Largest Trade
N/A
Insiders
11
Institutional Funds
134
Inst. Value
$1M+
Activist Filings
43
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 180 | $73.00 | Feb 21, 2026 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 423 | $73.00 | Feb 21, 2026 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $100K–$500K | 4K | $35.67 | Jan 23, 2026 |
| Zalevsky Jonathan | Chief R&D Officer | GRANT | N/A | 3K | — | Nov 26, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $50K–$100K | 1K | $54.28 | Nov 26, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $15K–$50K | 630 | $54.28 | Nov 26, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | GRANT | N/A | 2K | — | Nov 26, 2025 |
| ROBIN HOWARD W | President & CEO | GRANT | N/A | 7K | — | Nov 26, 2025 |
| ROBIN HOWARD W | President & CEO | SELL | $100K–$500K | 2K | $54.28 | Nov 26, 2025 |
| ROBIN HOWARD W | President & CEO | SELL | $100K–$500K | 7K | $46.69 | Sep 12, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $50K–$100K | 2K | $33.52 | Sep 9, 2025 |
| ROBIN HOWARD W | President & CEO | SELL | $100K–$500K | 12K | $36.42 | Sep 9, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 485 | $30.10 | Sep 5, 2025 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 2K | $30.16 | Sep 5, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 11K | $0.67 | May 22, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 10K | $0.67 | May 22, 2025 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 23K | $0.67 | May 22, 2025 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 10K | $1.01 | Feb 21, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 11K | $1.01 | Feb 21, 2025 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 24K | $1.01 | Feb 21, 2025 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $15K–$50K | 50K | $0.90 | Dec 27, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $15K–$50K | 51K | $0.94 | Dec 21, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 8K | $1.01 | Nov 21, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 6K | $1.01 | Nov 21, 2024 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 16K | $1.01 | Nov 21, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 7K | $1.28 | Aug 21, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 6K | $1.28 | Aug 21, 2024 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 15K | $1.28 | Aug 21, 2024 |
| CHESS ROBERT | Director | SELL | $15K–$50K | 20K | $1.20 | Jun 14, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 9K | $0.68 | Feb 23, 2024 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 8K | $0.68 | Feb 23, 2024 |
| ROBIN HOWARD W | President & CEO | SELL | $1K–$15K | 20K | $0.68 | Feb 23, 2024 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 10K | $0.49 | Nov 21, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 7K | $0.49 | Nov 21, 2023 |
| ROBIN HOWARD W | President & CEO | SELL | $1K–$15K | 20K | $0.49 | Nov 21, 2023 |
| Curet Myriam | Director | SELL | $1K–$15K | 4K | $0.69 | Sep 21, 2023 |
| CHESS ROBERT | Director | SELL | $1K–$15K | 10K | $0.67 | Sep 21, 2023 |
| Ajer Jeffrey Robert | Director | SELL | $1K–$15K | 4K | $0.69 | Sep 21, 2023 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 10K | $0.78 | Aug 18, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 7K | $0.78 | Aug 18, 2023 |
| ROBIN HOWARD W | President & CEO | SELL | $15K–$50K | 20K | $0.78 | Aug 18, 2023 |
| WHITFIELD ROY A | Director | SELL | $15K–$50K | 30K | $0.57 | Jun 15, 2023 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $1K–$15K | 10K | $0.72 | May 18, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $1K–$15K | 8K | $0.72 | May 18, 2023 |
| ROBIN HOWARD W | President & CEO | SELL | $1K–$15K | 20K | $0.72 | May 18, 2023 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $15K–$50K | 10K | $3.00 | Feb 18, 2023 |
| Wilson Mark Andrew | Chief Legal Officer | SELL | $15K–$50K | 8K | $3.00 | Feb 18, 2023 |
| Thomsen Jillian B. | CFO | SELL | $15K–$50K | 10K | $3.00 | Feb 18, 2023 |
| ROBIN HOWARD W | President & CEO | SELL | $50K–$100K | 20K | $3.00 | Feb 18, 2023 |
| Zalevsky Jonathan | Chief R&D Officer | SELL | $15K–$50K | 13K | $3.57 | Nov 18, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 134 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Two Seas Capital LP | 745K | $1M+ | SH |
| Prosight Management, LP | 555K | $1M+ | SH |
| Sofinnova Investments, Inc. | 439K | $1M+ | SH |
| Point72 Asset Management, L.P. | 433K | $1M+ | SH |
| EMERALD ADVISERS, LLC | 384K | $1M+ | SH |
| 22NW, LP | 331K | $1M+ | SH |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 296K | $1M+ | SH |
| BALYASNY ASSET MANAGEMENT L.P. | 282K | $1M+ | SH |
| PRIMECAP MANAGEMENT CO/CA/ | 280K | $1M+ | SH |
| EMERALD MUTUAL FUND ADVISERS TRUST | 253K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 211K | $1M+ | SH |
| BNP PARIBAS FINANCIAL MARKETS | 210K | $1M+ | SH |
| STATE STREET CORP | 196K | $1M+ | SH |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | 188K | $1M+ | SH |
| Creek Drive Management Group LLC | 186K | $1M+ | SH |
| HRT FINANCIAL LP | 173K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 173K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 120K | $1M+ | SH |
| Nantahala Capital Management, LLC | 113K | $1M+ | SH |
| Jefferies Financial Group Inc. | 112K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G · Mar 6, 2026
11.1%
3.0M shares
SC 13G/A · Feb 13, 2026
4.0%
810K shares
SC 13G · Jan 30, 2026
5.0%
1.0M shares
Nantahala Capital Management, LLC
SC 13G/A · Nov 14, 2025
2.2%
419K shares
SC 13G/A · Nov 14, 2025
0.0%
0 shares
Susquehanna Portfolio Strategies, LLC
SC 13G · Nov 13, 2025
6.3%
1.2M shares
SC 13G/A · Oct 31, 2025
5.0%
949K shares
Integrated Core Strategies (US) LLC
SC 13G/A · Oct 28, 2025
1.8%
334K shares
Nantahala Capital Management, LLC
SC 13G · Aug 14, 2025
5.7%
710K shares
SC 13G/A · Aug 14, 2025
9.3%
1.9M shares
SC 13G/A · Jul 18, 2025
1.6%
203K shares
SC 13G · Jul 9, 2025
3.8%
662K shares
Integrated Core Strategies (US) LLC
SC 13G · Jul 3, 2025
4.7%
816K shares
SC 13G/A · May 15, 2025
0.0%
0 shares
SC 13G/A · Apr 17, 2025
6.7%
12.5M shares
SC 13G · Feb 14, 2025
5.2%
9.7M shares
Eventide Asset Management, LLC
SC 13G/A · Feb 14, 2025
3.6%
6.7M shares
SC 13G/A · Feb 14, 2025
1.1%
2.0M shares
Eventide Asset Management, LLC
SC 13G · Nov 14, 2024
5.1%
9.4M shares
SC 13G/A · Nov 14, 2024
8.7%
15.9M shares
SC 13G · Nov 8, 2024
8.7%
16.0M shares
SC 13G · Oct 22, 2024
8.7%
16.0M shares
SC 13G · Mar 15, 2024
9.9%
20.0M shares
SC 13G/A · Feb 14, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2024
3.0%
6 shares
SC 13G/A · Feb 14, 2024
9.7%
18.4M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
6.3%
12.0M shares
SC 13G · Aug 17, 2023
9.8%
18.7M shares
SC 13G/A · Jul 10, 2023
2.9%
5.5M shares
The Vanguard Group - 23-1945930
SC 13G/A · Jul 10, 2023
6.4%
12.1M shares
SC 13G/A · Jul 7, 2023
4.5%
8.6M shares
PRIMECAP Management Company 95-3868081
SC 13G/A · Jul 7, 2023
4.3%
8.1M shares
SC 13G · Jul 3, 2023
4.0%
6 shares
SC 13G/A · May 5, 2023
9.7%
18.3M shares
SC 13G · Apr 14, 2023
6.5%
12.3M shares
PRIMECAP Management Company 95-3868081
SC 13G/A · Feb 9, 2023
8.3%
15.7M shares
SC 13G/A · Feb 2, 2023
19.9%
37.3M shares
SC 13G/A · Jan 23, 2023
19.1%
35.9M shares
SC 13G/A · Feb 11, 2022
20.0%
36.9M shares
PRIMECAP Management Company 95-3868081
SC 13G/A · Feb 10, 2022
9.4%
17.4M shares
SC 13G/A · Jan 27, 2022
14.5%
26.7M shares
SC 13G/A · Jan 25, 2022
14.5%
26.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Jan 10, 2022
10.0%
18.5M shares