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Home/Insiders/Zalevsky Jonathan

Zalevsky Jonathan

Officer

Officer
Total trades
22
Bought (open market)
$0
Sold (open market)
$1.2M
Tickers traded
1
Jonathan Zalevsky, Chief R&D Officer at Nektar Therapeutics (NKTR), has demonstrated a consistent pattern of selling company shares over the past two years, with no recorded purchases in SEC filings. Since February 2024, Zalevsky has executed 15 sales totaling approximately $397,938, with transactions ranging from modest dispositions like $6,129 on February 20, 2024, to larger sales such as $137,936 on January 20, 2026. The activity intensified in late 2025 and early 2026, with multiple sales clustered in September 2025 (four transactions totaling $57,792) and a significant $137,936 sale in January 2026 followed by an additional $13,140 disposition in February 2026. Notably, Zalevsky’s filings include several awards of securities (coded "A") with zero reported value, likely representing equity grants or option exercises that did not involve open-market purchases. The absence of buy transactions and the repeated sales—particularly the higher-value dispositions in late 2025 and early 2026—suggest a directional reduction in his NKTR holdings. All transactions involve Nektar Therapeutics, indicating his trading activity remains concentrated in his employer’s stock. The pattern aligns with a net divestment approach, though the sales represent a mix of smaller routine disposals and occasional larger transactions. No material buy-side activity offsets the steady outflow.

AI-assisted summary

12-month activity

Monthly buy vs sell totals from Zalevsky Jonathan's Form 4 filings.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$63K3
December 2025$0$02
January 2026$0$138K1
February 2026$0$13K1
March 2026$0$00
April 2026$0$00
May 2026$0$13K1
June 2026$0$734K2
July 2026$0$01
August 2026$0$13K1
September 2026$0$00

Recent trades

Most recent Form 4 filings by Zalevsky Jonathan.

  • Zalevsky Jonathansold186 shares ofNKTRat $71.98$13KAug 18 · filed Aug 20Details
  • Zalevsky Jonathangranted16,500 shares ofNKTRat $0Jul 24Details
  • Zalevsky Jonathansold5,681 shares ofNKTRat $70$398KJun 30 · filed Jul 2Details

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
Zalevsky Jonathan
sold
5,538 shares of
NKTR
at $60.71
$336KJun 15 · filed Jun 17Details
  • Zalevsky Jonathansold199 shares ofNKTRat $65.51$13KMay 19 · filed May 21Details
  • Zalevsky Jonathansold180 shares ofNKTRat $73$13KFeb 18 · filed Feb 20Details
  • Zalevsky Jonathansold3,867 shares ofNKTRat $35.67$138KJan 20 · filed Jan 22Details
  • Zalevsky Jonathangranted25,000 shares ofNKTRat $0Dec 22, 2025 · filed Dec 23, 2025Details
  • Zalevsky Jonathangranted6,250 shares ofNKTRat $0Dec 22, 2025 · filed Dec 23, 2025Details
  • Zalevsky Jonathansold1,157 shares ofNKTRat $54.28$63KNov 25, 2025Details
  • Zalevsky Jonathangranted4,766 shares ofNKTRat $0Nov 21, 2025 · filed Nov 25, 2025Details
  • Zalevsky Jonathangranted2,666 shares ofNKTRat $0Nov 21, 2025 · filed Nov 25, 2025Details
  • Zalevsky Jonathansold189 shares ofNKTRat $34.41$7KSep 4, 2025 · filed Sep 8, 2025Details
  • Zalevsky Jonathansold307 shares ofNKTRat $35.69$11KSep 4, 2025 · filed Sep 8, 2025Details
  • Zalevsky Jonathansold432 shares ofNKTRat $33.6$15KSep 4, 2025 · filed Sep 8, 2025Details
  • Zalevsky Jonathansold793 shares ofNKTRat $32.43$26KSep 4, 2025 · filed Sep 8, 2025Details
  • Zalevsky Jonathansold485 shares ofNKTRat $30.1$15KSep 2, 2025 · filed Sep 4, 2025Details
  • Zalevsky Jonathangranted16,666 shares ofNKTRat $0Aug 19, 2025 · filed Aug 21, 2025Details
  • Zalevsky Jonathansold725 shares ofNKTRat $26.59$19KAug 19, 2025 · filed Aug 21, 2025Details
  • Zalevsky Jonathansold10,712 shares ofNKTRat $0.67$7KMay 19, 2025 · filed May 21, 2025Details
  • View all 22 trades →