Zalevsky Jonathan Insider Trading Activity

Corporate InsiderChief R&D Officer · CIK 1789857

10

Total trades

$318K

Total volume

May 19, 2026

Last activity

NKTR

NEKTAR THERAPEUTICS

Zalevsky Jonathan has been net-selling over the last 12 months with 0 purchases and 10 sales across 1 company.

NKTR is the most-traded position with 10 trades. The largest single transaction was a sale of NKTR for $138K on Jan 20, 2026.

Performance Scorecard

Forward stock performance after each transaction by Zalevsky Jonathan. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIODAVG BUY RETURNAVG SELL AVOIDEDSUCCESS RATETRADES
30 days-60.8%30%10
90 days-78.8%11%9
120 days-37.0%11%9

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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NKTR · NEKTAR THERAPEUTICS

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Recent Trades

DATETICKERTYPESHARESPRICEVALUEΔ OWNEDROLEFILING
May 19, 2026
NKTRSell199$65.51$13K−0.9%Chief R&D Officer
Feb 18, 2026
NKTRSell180$73.00$13K−0.8%Chief R&D Officer
Jan 20, 2026
NKTRSell3,867$35.67$138K−15.3%Chief R&D Officer
Nov 25, 2025
NKTRSell1,157$54.28$63K−5.7%Chief R&D Officer
Sep 4, 2025
NKTRSell793$32.43$26K−4.1%Chief R&D Officer
Sep 4, 2025
NKTRSell432$33.60$15K−2.3%Chief R&D Officer
Sep 4, 2025
NKTRSell189$34.41$7K−1.1%Chief R&D Officer
Sep 4, 2025
NKTRSell307$35.69$11K−1.7%Chief R&D Officer
Sep 2, 2025
NKTRSell485$30.10$15K−2.5%Chief R&D Officer
Aug 19, 2025
NKTRSell725$26.59$19K−3.6%Chief R&D Officer

Top Companies Traded

TICKERCOMPANYTRADESTOTAL VOLUME
NKTRNEKTAR THERAPEUTICS10$318K

Other insiders at NEKTAR THERAPEUTICS

1 other tracked filer at NKTR.