Insider · CIK 0001789857

Zalevsky Jonathan

Reports to the SEC for 1 company · SAN FRANCISCO, CA

sec.gov

Transactions

Companies

Filings

CIK

0001789857

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-08-18	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−186 sh	$71.98	−$13.4K	9,570
2026-07-24	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+16.5K sh	—	—	16,500
2026-06-30	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−5,681 sh	$70.00	−$398K	9,756
2026-06-15	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−5,538 sh	$60.71	−$336K	15,437
2026-05-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−199 sh	$65.51	−$13K	20,975
2026-02-18	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−180 sh	$73.00	−$13.1K	21,174
2026-01-20	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−3,867 sh	$35.67	−$138K	21,354
2025-12-22	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+6,250 sh	—	—	25,221
2025-12-22	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+25K sh	—	—	25,000
2025-11-25	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−1,157 sh	$54.28	−$62.8K	18,971
2025-11-21	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+2,666 sh	—	—	20,128
2025-11-21	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+4,766 sh	—	—	4,766
2025-09-04	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−793 sh	$32.43	−$25.7K	18,390
2025-09-04	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−432 sh	$33.60	−$14.5K	17,958
2025-09-04	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−189 sh	$34.41	−$6,503.49	17,769
2025-09-04	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−307 sh	$35.69	−$11K	17,462
2025-09-02	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−485 sh	$30.10	−$14.6K	19,183
2025-08-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−725 sh	$26.59	−$19.3K	19,668
2025-08-19	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+16.7K sh	—	—	16,666
2025-05-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−10.7K sh	$0.67	−$7,177.04	305,892
2025-02-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−10.3K sh	$1.01	−$10.4K	316,604
2024-12-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−51.1K sh	$0.94	−$48K	326,904
2024-12-13	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+135K sh	—	—	378,019
2024-12-13	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+270K sh	—	—	270,000
2024-12-13	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+375K sh	—	—	375,000
2024-11-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−7,785 sh	$1.01	−$7,862.85	243,019
2024-08-19	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−6,866 sh	$1.28	−$8,788.48	250,804
2024-05-17	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−7,355 sh	$1.75	−$12.9K	257,670
2024-02-20	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−9,014 sh	$0.68	−$6,129.52	265,025
2023-12-13	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+250K sh	—	—	250,000
2023-11-17	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−9,646 sh	$0.49	−$4,726.54	274,039
2023-08-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−9,703 sh	$0.78	−$7,568.34	283,685
2023-05-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−9,791 sh	$0.72	−$7,049.52	293,388
2023-02-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−10.5K sh	$3.00	−$31.5K	303,179
2022-11-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−13.5K sh	$3.57	−$48.1K	313,663
2022-08-18	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−73.7K sh	$4.65	−$343K	327,123
2022-08-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−10.6K sh	$4.76	−$50.3K	400,839
2022-08-15	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+135K sh	—	—	411,399
2022-08-15	NKTRNEKTAR THERAPEUTICS · Common StockA Award	Chief R&D Officer	AAward	+270K sh	—	—	270,000
2022-05-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−21.7K sh	$3.95	−$85.6K	276,399
2022-05-15	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+24K sh	—	—	298,072
2022-02-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−10.9K sh	$10.95	−$119K	274,122
2021-12-16	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+53K sh	—	—	285,034
2021-12-16	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+94K sh	—	—	94,000
2021-11-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−20.9K sh	$13.16	−$275K	232,084
2021-11-15	NKTRNEKTAR THERAPEUTICSA Award	Chief R&D Officer	AAward	+40.2K sh	—	—	252,953
2021-10-12	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Chief R&D Officer	AAward	+71.6K sh	—	—	71,550
2021-08-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−7,662 sh	$13.83	−$106K	212,803
2021-05-17	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−31.1K sh	$18.30	−$569K	235,065
2021-02-16	NKTRNEKTAR THERAPEUTICSS Sale	Chief R&D Officer	SSale	−24.1K sh	$22.37	−$540K	266,176

Recent filings

Accepted (ET)
Aug 204
Zalevsky Jonathan0001193125-26-359588
SEC(opens sec.gov)
Jul 244
Zalevsky Jonathan0001193125-26-316458
SEC(opens sec.gov)
Jul 24
Zalevsky Jonathan0001193125-26-295112
SEC(opens sec.gov)
Jun 174
Zalevsky Jonathan0001193125-26-274534
SEC(opens sec.gov)
May 214
Zalevsky Jonathan0001193125-26-235030
SEC(opens sec.gov)
Feb 204
Zalevsky Jonathan0001193125-26-061886
SEC(opens sec.gov)
Jan 224
Zalevsky Jonathan0001193125-26-019843
SEC(opens sec.gov)
Dec 234
Zalevsky Jonathan0001193125-25-331189
SEC(opens sec.gov)
Nov 254
Zalevsky Jonathan0001193125-25-297855
SEC(opens sec.gov)
Sep 84
Zalevsky Jonathan0000950170-25-113692
SEC(opens sec.gov)
Sep 44
Zalevsky Jonathan0000950170-25-113130
SEC(opens sec.gov)
Aug 214
Zalevsky Jonathan0000950170-25-110775
SEC(opens sec.gov)
May 214
Zalevsky Jonathan0000950170-25-075979
SEC(opens sec.gov)

Companies

NEKTAR THERAPEUTICSChief R&D OfficerNKTR

Address

C/O NEKTAR THERAPEUTICS 455 MISSION BAY BLVD SOUTH

SAN FRANCISCO, CA, 94158