Zalevsky Jonathan Insider Trading Activity
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.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 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
Pro: Trade MarkersNKTR · NEKTAR THERAPEUTICS
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
May 19, 2026 | NKTR | Sell | 199 | $65.51 | $13K | −0.9% | Chief R&D Officer | |
Feb 18, 2026 | NKTR | Sell | 180 | $73.00 | $13K | −0.8% | Chief R&D Officer | |
Jan 20, 2026 | NKTR | Sell | 3,867 | $35.67 | $138K | −15.3% | Chief R&D Officer | |
Nov 25, 2025 | NKTR | Sell | 1,157 | $54.28 | $63K | −5.7% | Chief R&D Officer | |
Sep 4, 2025 | NKTR | Sell | 793 | $32.43 | $26K | −4.1% | Chief R&D Officer | |
Sep 4, 2025 | NKTR | Sell | 432 | $33.60 | $15K | −2.3% | Chief R&D Officer | |
Sep 4, 2025 | NKTR | Sell | 189 | $34.41 | $7K | −1.1% | Chief R&D Officer | |
Sep 4, 2025 | NKTR | Sell | 307 | $35.69 | $11K | −1.7% | Chief R&D Officer | |
Sep 2, 2025 | NKTR | Sell | 485 | $30.10 | $15K | −2.5% | Chief R&D Officer | |
Aug 19, 2025 | NKTR | Sell | 725 | $26.59 | $19K | −3.6% | Chief R&D Officer |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| NKTR | NEKTAR THERAPEUTICS | 10 | $318K |
Other insiders at NEKTAR THERAPEUTICS
1 other tracked filer at NKTR.