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Jonathan Zalevsky

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Insider profile

Currently holds positions in Nektar Therapeutics and Nektar Therapeutics

Performance

Overall performance
3.8
Performance over holding periods
3.8
30 days 90 days 120 days
Average return 4% 8.2% 15.1%
Success rate 56% 68% 82%
Transactions
26 0% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance

Positions

Position Company Period
Chief Research & Development Officer Nektar Therapeutics Oct. 1, 2019 -
Senior Vice President - Research , Chief Scientific Officer Nektar Therapeutics Nov. 22, 2017 -
Jonathan Zalevsky's trades of Nektar Therapeutics's stock


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-17 2026-06-15
PlS Planned sale
97,319 +42.4%
174.29
US$2,916,384 		97,319 +42.4% 174.29 US$2,916,384
2026-06-15 2026-06-15
PrS Proposed sale
7,250
458.56
US$4,366,435 		7,250 458.56 US$4,366,435
2026-05-21 2026-05-19
S Sale
23,150 +36.5%
284.42
US$146,582 		23,150 +36.5% 284.42 US$146,582
2026-05-19 2026-05-19
PrS Proposed sale
199
65.51
US$13,036 		199 65.51 US$13,036
2026-02-20 2026-02-18
S Sale
180 -0.8%
73.00
US$13,140 		180 -0.8% 73.00 US$13,140
2026-02-18 2026-02-18
PrS Proposed sale
180
73.00
US$13,140 		180 73.00 US$13,140
2026-01-22 2026-01-20
PlS Planned sale
3,867 -15.3%
35.67
US$137,936 		3,867 -15.3% 35.67 US$137,936
2026-01-20 2026-01-20
PrS Proposed sale
3,867
35.67
US$137,946 		3,867 35.67 US$137,946
2025-11-25 2025-11-25
PrS Proposed sale
1,157
58.82
US$68,053 		1,157 58.82 US$68,053
2025-11-25 2025-11-25
S Sale
1,157 -5.7%
54.28
US$62,802 		1,157 -5.7% 54.28 US$62,802
2025-09-08 2025-09-04
PlS Planned sale
307 -1.7%
35.69
US$10,957 		307 -1.7% 35.69 US$10,957
2025-09-08 2025-09-04
PlS Planned sale
189 -1.1%
34.41
US$6,503 		189 -1.1% 34.41 US$6,503
2025-09-08 2025-09-04
PlS Planned sale
432 -2.3%
33.60
US$14,515 		432 -2.3% 33.60 US$14,515
2025-09-08 2025-09-04
PlS Planned sale
793 -4.1%
32.43
US$25,717 		793 -4.1% 32.43 US$25,717
2025-09-04 2025-09-04
PrS Proposed sale
1,721
33.52
US$57,688 		1,721 33.52 US$57,688
2025-09-04 2025-09-02
PlS Planned sale
485 -2.5%
30.10
US$14,598 		485 -2.5% 30.10 US$14,598
2025-09-02 2025-09-02
PrS Proposed sale
485
30.10
US$14,600 		485 30.10 US$14,600
2025-08-21 2025-08-19
S Sale
725 -3.6%
26.59
US$19,278 		725 -3.6% 26.59 US$19,278
2025-08-19 2025-08-19
PrS Proposed sale
725
26.59
US$19,278 		725 26.59 US$19,278
2025-05-21 2025-05-19
S Sale
10,712 -3.4%
0.67
US$7,177 		10,712 -3.4% 0.67 US$7,177
2025-05-19 2025-05-19
PrS Proposed sale
10,712
0.67
US$7,191 		10,712 0.67 US$7,191
2025-02-21 2025-02-19
S Sale
10,300 -3.2%
1.01
US$10,403 		10,300 -3.2% 1.01 US$10,403
2025-02-19 2025-02-19
PrS Proposed sale
10,300
1.01
US$10,391 		10,300 1.01 US$10,391
2024-12-20 2024-12-19
S Sale
51,115 -13.5%
0.94
US$48,048 		51,115 -13.5% 0.94 US$48,048
2024-12-19 2024-12-19
PrS Proposed sale
51,115
0.94
US$48,063 		51,115 0.94 US$48,063
2024-11-20 2024-11-19
S Sale
7,785 -3.1%
1.01
US$7,863 		7,785 -3.1% 1.01 US$7,863
2024-11-19 2024-11-19
PrS Proposed sale
7,785
1.01
US$7,878 		7,785 1.01 US$7,878
2024-08-20 2024-08-19
S Sale
6,866 -2.7%
1.28
US$8,788 		6,866 -2.7% 1.28 US$8,788
2024-08-19 2024-08-19
PrS Proposed sale
6,866
1.28
US$8,762 		6,866 1.28 US$8,762
2024-05-20 2024-05-17
S Sale
7,355 -2.8%
1.75
US$12,871 		7,355 -2.8% 1.75 US$12,871
2024-05-20 2024-05-17
S Sale
7,355 -2.8%
1.75
US$12,871 		7,355 -2.8% 1.75 US$12,871
2024-05-17 2024-05-17
PrS Proposed sale
7,355
1.75
US$12,901 		7,355 1.75 US$12,901
2024-02-22 2024-02-20
S Sale
9,014 -3.3%
0.68
US$6,130 		9,014 -3.3% 0.68 US$6,130
2024-02-20 2024-02-20
PrS Proposed sale
9,014
0.68
US$6,102 		9,014 0.68 US$6,102
2023-11-20 2023-11-17
S Sale
9,646 -3.4%
0.49
US$4,727 		9,646 -3.4% 0.49 US$4,727
2023-11-17 2023-11-17
PrS Proposed sale
9,646
0.49
US$4,723 		9,646 0.49 US$4,723
2023-08-17 2023-08-16
S Sale
9,703 -3.3%
0.78
US$7,568 		9,703 -3.3% 0.78 US$7,568
2023-05-17 2023-05-16
S Sale
9,791 -3.2%
0.72
US$7,050 		9,791 -3.2% 0.72 US$7,050
2023-02-17 2023-02-16
S Sale
10,484 -3.3%
3.00
US$31,452 		10,484 -3.3% 3.00 US$31,452
2022-11-18 2022-11-16
S Sale
13,460 -4.1%
3.57
US$48,052 		13,460 -4.1% 3.57 US$48,052
2022-08-19 2022-08-18
PlS Planned sale
73,716 -18.4%
4.65
US$342,779 		73,716 -18.4% 4.65 US$342,779
2022-08-17 2022-08-16
S Sale
10,560 -2.6%
4.76
US$50,266 		10,560 -2.6% 4.76 US$50,266
2022-05-17 2022-05-16
S Sale
21,673 -7.3%
3.95
US$85,608 		21,673 -7.3% 3.95 US$85,608
2022-02-18 2022-02-16
S Sale
10,912 -3.8%
10.95
US$119,486 		10,912 -3.8% 10.95 US$119,486
2021-11-17 2021-11-16
S Sale
20,869 -8.3%
13.16
US$274,636 		20,869 -8.3% 13.16 US$274,636