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Nektar Therapeutics planned insider sales

In the last twelve months insiders at Nektar Therapeutics filed 15 Form 144 notices of planned sales, 119,440 shares worth $8.1 million at the time of filing, from 4 sellers. The latest, filed 18 August 2026: Zalevsky Jonathan (officer), 186 shares worth $13,388, planned for around 18 August 2026 through Fidelity Brokerage Services LLC.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
18 August 2026Zalevsky JonathanOfficer186$13,38818 August 2026186 shares from 18 August 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
18 August 2026Robin Howard WOfficer, Director418$30,08718 August 2026418 shares from 18 August 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
30 June 2026Jonathan ZalevskyOfficer5,681$371,48130 June 20265,681 shares from 30 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
17 June 2026Robin Howard WOfficer, Director10,000$602,70017 June 202620,000 shares from 16 June 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
16 June 2026Robin Howard WOfficer, Director10,000$609,60016 June 2026No matching Form 4 saleFidelity Brokerage Services LLCRestricted Stock VestingForm 144
15 June 2026Jonathan ZalevskyOfficer5,538$328,84615 June 20265,538 shares from 15 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
19 May 2026Zalevsky JonathanOfficer199$13,03619 May 2026199 shares from 19 May 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
19 May 2026Robin Howard WOfficer, Director444$29,08519 May 2026444 shares from 19 May 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
13 March 2026Wilson Mark AndrewFormer Officer78,510$5.7 million13 March 2026No matching Form 4 saleFidelity Brokerage Services LLCOption Granted - 08/15/2022; Option Granted - 12/13/2023; Option Granted - 12/13/2024Form 144
18 February 2026Zalevsky JonathanOfficer180$13,14018 February 2026180 shares from 18 February 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
18 February 2026Robin Howard WOfficer, Director423$30,87818 February 2026423 shares from 18 February 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
20 January 2026Zalevsky JonathanOfficer3,867$137,94620 January 20263,867 shares from 20 January 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
25 November 2025Wilson Mark AndrewOfficer630$37,05625 November 2025630 shares from 25 November 2025Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
25 November 2025Zalevsky JonathanOfficer1,157$68,05325 November 20251,157 shares from 25 November 2025Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
25 November 2025Robin Howard WOfficer, Director2,207$129,81225 November 20252,207 shares from 25 November 2025Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?