Jonathan Zalevsky

Track

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 57% 68% 82%
Transactions
28 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


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Transaction date
Sale
Price
455.64
Quantity 6,564 -0.6%
Value US$3,454,797
Transaction date
Proposed sale
Price
498.65
Quantity 55,493
Value US$322,164
Transaction date
Planned sale
Price
382.07
Quantity 80,621 -10.2%
Value US$4,074,563
Transaction date
Proposed sale
Price
65.39
Quantity 5,681
Value US$371,481
Transaction date
Proposed sale
Price
65.39
Quantity 5,681
Value US$371,481
Transaction date
Planned sale
Price
60.71
Quantity 5,538 -26.4%
Value US$336,212
Transaction date
Proposed sale
Price
59.38
Quantity 5,538
Value US$328,846
Transaction date
Proposed sale
Price
65.51
Quantity 199
Value US$13,036
Transaction date
Proposed sale
Price
73.00
Quantity 180
Value US$13,140
Transaction date
Planned sale
Price
35.67
Quantity 3,867 -15.3%
Value US$137,936
Transaction date
Proposed sale
Price
35.67
Quantity 3,867
Value US$137,946
Transaction date
Proposed sale
Price
58.82
Quantity 1,157
Value US$68,053
Transaction date
Planned sale
Price
35.69
Quantity 307 -1.7%
Value US$10,957
Transaction date
Planned sale
Price
34.41
Quantity 189 -1.1%
Value US$6,503
Transaction date
Planned sale
Price
33.60
Quantity 432 -2.3%
Value US$14,515
Transaction date
Planned sale
Price
32.43
Quantity 793 -4.1%
Value US$25,717
Transaction date
Proposed sale
Price
33.52
Quantity 1,721
Value US$57,688
Transaction date
Planned sale
Price
30.10
Quantity 485 -2.5%
Value US$14,598
Transaction date
Proposed sale
Price
30.10
Quantity 485
Value US$14,600
Transaction date
Proposed sale
Price
26.59
Quantity 725
Value US$19,278
Transaction date
Proposed sale
Price
0.67
Quantity 10,712
Value US$7,191
Transaction date
Proposed sale
Price
1.01
Quantity 10,300
Value US$10,391
Transaction date
Sale
Price
0.94
Quantity 51,115 -13.5%
Value US$48,048
Transaction date
Proposed sale
Price
0.94
Quantity 51,115
Value US$48,063
Transaction date
Proposed sale
Price
1.01
Quantity 7,785
Value US$7,878
Transaction date
Proposed sale
Price
1.28
Quantity 6,866
Value US$8,762
Transaction date
Proposed sale
Price
1.75
Quantity 7,355
Value US$12,901
Transaction date
Proposed sale
Price
0.68
Quantity 9,014
Value US$6,102
Transaction date
Proposed sale
Price
0.49
Quantity 9,646
Value US$4,723
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-20 2026-08-18
S Sale
6,564 -0.6%
455.64
US$3,454,797 		6,564 -0.6% 455.64 US$3,454,797
2026-08-18 2026-08-18
PrS Proposed sale
55,493
498.65
US$322,164 		55,493 498.65 US$322,164
2026-07-02 2026-06-30
PlS Planned sale
80,621 -10.2%
382.07
US$4,074,563 		80,621 -10.2% 382.07 US$4,074,563
2026-06-30 2026-06-30
PrS Proposed sale
5,681
65.39
US$371,481 		5,681 65.39 US$371,481
2026-06-30 2026-06-30
PrS Proposed sale
5,681
65.39
US$371,481 		5,681 65.39 US$371,481
2026-06-17 2026-06-15
PlS Planned sale
5,538 -26.4%
60.71
US$336,212 		5,538 -26.4% 60.71 US$336,212
2026-06-15 2026-06-15
PrS Proposed sale
5,538
59.38
US$328,846 		5,538 59.38 US$328,846
2026-05-21 2026-05-19
S Sale
199 -0.9%
65.51
US$13,036 		199 -0.9% 65.51 US$13,036
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