Zalevsky Jonathan (CIK 0001789857)

Latest company ownership

Role: Chief R&D Officer
Shares held
4,766
Last filed at
Nov 25, 2025
Confidence Score
74.3
2025Q4
Confidence Score History
2019Q4 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Nov 21, 2025 Nov 25, 2025 NEKTAR THERAPEUTICS Chief R&D Officer Sell 90.0 +1,509 8.64% $62.8K
Sep 4, 2025 Sep 8, 2025 NEKTAR THERAPEUTICS Chief R&D Officer Sell 28.8 -1,721 -8.97% $57.7K
Sep 2, 2025 Sep 4, 2025 NEKTAR THERAPEUTICS Chief R&D Officer Sell 45.0 -485 -2.47% $14.6K
Aug 19, 2025 Aug 21, 2025 NEKTAR THERAPEUTICS Chief R&D Officer Sell 46.3 -725 -3.56% $19.3K
May 19, 2025 May 21, 2025 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -10,712 -3.38% $7.2K
Feb 19, 2025 Feb 21, 2025 NEKTAR THERAPEUTICS Chief R&D Officer Sell 46.3 -10,300 -3.15% $10.4K
Dec 19, 2024 Dec 20, 2024 NEKTAR THERAPEUTICS Chief R&D Officer Sell 46.3 -51,115 -13.52% $48K
Nov 19, 2024 Nov 20, 2024 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -7,785 -3.10% $7.9K
Aug 19, 2024 Aug 20, 2024 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -6,866 -2.66% $8.8K
May 17, 2024 May 20, 2024 NEKTAR THERAPEUTICS Chief R&D Officer Sell 46.3 -7,355 -2.78% $12.9K
Feb 20, 2024 Feb 22, 2024 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -9,014 -3.29% $6.1K
Nov 17, 2023 Nov 20, 2023 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -9,646 -3.40% $4.7K
Aug 16, 2023 Aug 17, 2023 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -9,703 -3.31% $7.6K
May 16, 2023 May 17, 2023 NEKTAR THERAPEUTICS Chief R&D Officer Sell 47.5 -9,791 -3.23% $7K
Feb 16, 2023 Feb 17, 2023 NEKTAR THERAPEUTICS Chief R&D Officer Sell 46.3 -10,484 -3.34% $31.5K
Nov 16, 2022 Nov 18, 2022 NEKTAR THERAPEUTICS Chief R&D Officer Sell 46.3 -13,460 -4.11% $48.1K
Aug 18, 2022 Aug 19, 2022 NEKTAR THERAPEUTICS Chief R&D Officer Sell 17.5 -73,716 -18.39% $342.8K
Aug 15, 2022 Aug 17, 2022 NEKTAR THERAPEUTICS Chief R&D Officer Sell 95.0 +124,440 45.02% $50.3K
May 15, 2022 May 17, 2022 NEKTAR THERAPEUTICS Chief R&D Officer Sell 72.5 +2,277 0.83% $85.6K
Feb 16, 2022 Feb 18, 2022 NEKTAR THERAPEUTICS Chief R&D Officer Sell 42.5 -10,912 -3.83% $119.5K
Nov 15, 2021 Nov 17, 2021 NEKTAR THERAPEUTICS Chief R&D Officer Sell 92.5 +19,281 9.06% $274.6K
Aug 16, 2021 Aug 18, 2021 NEKTAR THERAPEUTICS Chief R&D Officer Sell 42.5 -7,662 -3.48% $106K
May 17, 2021 May 19, 2021 NEKTAR THERAPEUTICS Chief R&D Officer Sell 40.0 -31,111 -11.69% $569.3K
Feb 16, 2021 Feb 18, 2021 NEKTAR THERAPEUTICS Chief R&D Officer Sell 40.0 -24,141 -8.32% $540K
Nov 23, 2020 Nov 25, 2020 NEKTAR THERAPEUTICS Chief R&D Officer Sell 30.0 -16,380 -6.14% $268.6K
Nov 16, 2020 Nov 18, 2020 NEKTAR THERAPEUTICS Chief R&D Officer Sell 40.0 -29,618 -10.00% $501.4K
Aug 17, 2020 Aug 19, 2020 NEKTAR THERAPEUTICS Chief R&D Officer Sell 40.0 -26,200 -8.12% $515.4K
May 18, 2020 May 20, 2020 NEKTAR THERAPEUTICS Chief R&D Officer Sell 42.5 -4,558 -1.39% $102.6K
Feb 18, 2020 Feb 20, 2020 NEKTAR THERAPEUTICS Chief R&D Officer Sell 42.5 -4,774 -1.44% $106.7K
Nov 18, 2019 Nov 20, 2019 NEKTAR THERAPEUTICS Chief R&D Officer Sell 42.5 -3,960 -1.34% $71.2K