Doberstein Stephen K

Number of records: 40
SEC FilingCompany/StockTrade DateTransactionSharesAvg. PriceTotal% HoldingsGain/Loss
29-Dec-21 4:19 PM
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Dicerna Pharmaceuticals Inc (DRNA) 28-Dec-21Disposition (change in control) 3,333$38.25$127,487.00(100%)
3.33K to 0
< 1%
07-Jun-21 9:32 PM
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Dicerna Pharmaceuticals Inc (DRNA) 03-Jun-21Option Exercise 3,333----100%
0 to 3.33K
09-Sep-19 5:09 PM
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Nektar Therapeutics (NKTR) 05-Sep-19Market Purchase 15,000$17.28$259,200.0016%
92.67K to 107.67K
7%
19-Aug-19 7:06 PM
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Nektar Therapeutics (NKTR) 16-Aug-19Market Sale 3,245$18.15$58,896.80(3%)
95.91K to 92.67K
(2%)
17-May-19 8:18 PM
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Nektar Therapeutics (NKTR) 16-May-19Market Sale 3,461$31.37$108,572.00(3%)
99.37K to 95.91K
41%
21-Feb-19 8:13 PM
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Nektar Therapeutics (NKTR) 19-Feb-19Market Sale 3,310$42.39$140,311.00(3%)
102.68K to 99.37K
56%
18-Dec-18 6:10 PM
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Nektar Therapeutics (NKTR) 14-Dec-18Grant 23,950----30%
78.73K to 102.68K
19-Nov-18 6:11 PM
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Nektar Therapeutics (NKTR) 16-Nov-18Market Sale 4,524$38.25$173,043.00(5%)
83.26K to 78.73K
52%
16-Aug-18 9:43 PM
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Nektar Therapeutics (NKTR) 16-Aug-18Disposition 6,701$58.40$391,338.00(7%)
89.96K to 83.26K
68%
16-Aug-18 9:43 PM
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Nektar Therapeutics (NKTR) 15-Aug-18Grant 26,000----41%
63.96K to 89.96K
18-May-18 7:01 PM
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Nektar Therapeutics (NKTR) 16-May-18Market Sale 3,435$83.39$286,445.00(5%)
67.39K to 63.96K
78%
09-Apr-18 8:21 PM
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Nektar Therapeutics (NKTR) 09-Apr-18Option Exercise 49,500$7.21$356,895.0073%
67.39K to 116.89K
09-Apr-18 8:21 PM
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Nektar Therapeutics (NKTR) 09-Apr-18Market Option Sale 49,500$96.13$4,758,440.00(42%)
116.89K to 67.39K
81%
09-Apr-18 8:21 PM
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Nektar Therapeutics (NKTR) 06-Apr-18Option Exercise 110,500$9.10$1,005,510.00164%
67.39K to 177.89K
09-Apr-18 8:21 PM
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Nektar Therapeutics (NKTR) 06-Apr-18Market Option Sale 110,500$91.69$10,131,700.00(62%)
177.89K to 67.39K
80%
20-Feb-18 7:07 PM
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Nektar Therapeutics (NKTR) 16-Feb-18Market Sale 2,426$82.94$201,212.00(3%)
69.82K to 67.39K
78%
19-Dec-17 6:25 PM
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Nektar Therapeutics (NKTR) 15-Dec-17Grant 26,000----59%
43.82K to 69.82K
17-Nov-17 6:03 PM
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Nektar Therapeutics (NKTR) 16-Nov-17Disposition 4,782$44.23$211,508.00(10%)
48.6K to 43.82K
58%
17-Nov-17 6:03 PM
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Nektar Therapeutics (NKTR) 15-Nov-17Grant 17,500----56%
31.1K to 48.6K
08-Nov-17 6:01 PM
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Nektar Therapeutics (NKTR) 08-Nov-17Option Exercise 300,000$9.53$2,859,000.00965%
31.1K to 331.1K
08-Nov-17 6:01 PM
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Nektar Therapeutics (NKTR) 08-Nov-17Market Option Sale 300,000$30.09$9,027,000.00(91%)
331.1K to 31.1K
39%
08-Nov-17 6:01 PM
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Nektar Therapeutics (NKTR) 07-Nov-17Option Exercise 75,409$9.53$718,648.00242%
31.1K to 106.51K
08-Nov-17 6:01 PM
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Nektar Therapeutics (NKTR) 07-Nov-17Market Option Sale 75,409$25.78$1,944,040.00(71%)
106.51K to 31.1K
28%
08-Nov-17 6:01 PM
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Nektar Therapeutics (NKTR) 06-Nov-17Option Exercise 20,914$9.53$199,310.0067%
31.1K to 52.02K
08-Nov-17 6:01 PM
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Nektar Therapeutics (NKTR) 06-Nov-17Market Option Sale 20,914$24.98$522,432.00(40%)
52.02K to 31.1K
26%
10-Oct-17 6:06 PM
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Nektar Therapeutics (NKTR) 05-Oct-17Option Exercise 43,677$9.53$416,242.00140%
31.1K to 74.78K
10-Oct-17 6:06 PM
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Nektar Therapeutics (NKTR) 05-Oct-17Market Option Sale 43,677$24.97$1,090,610.00(58%)
74.78K to 31.1K
26%
18-Aug-17 7:01 PM
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Nektar Therapeutics (NKTR) 16-Aug-17Market Sale 1,701$19.32$32,863.30(5%)
32.8K to 31.1K
5%
18-May-17 8:45 PM
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Nektar Therapeutics (NKTR) 16-May-17Market Sale 1,701$19.55$33,254.50(5%)
34.5K to 32.8K
6%
07-Apr-17 6:07 PM
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Nektar Therapeutics (NKTR) 05-Apr-17Option Exercise 100,000$9.53$953,000.00290%
34.5K to 134.5K
07-Apr-17 6:07 PM
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Nektar Therapeutics (NKTR) 05-Apr-17Market Option Sale 100,000$21.70$2,170,000.00(74%)
134.5K to 34.5K
15%
17-Feb-17 8:02 PM
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Nektar Therapeutics (NKTR) 16-Feb-17Market Sale 1,261$13.14$16,569.50(4%)
35.77K to 34.5K
(40%)
15-Dec-16 8:42 PM
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Nektar Therapeutics (NKTR) 13-Dec-16Grant 17,500----96%
18.27K to 35.77K
18-Nov-16 6:07 PM
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Nektar Therapeutics (NKTR) 16-Nov-16Market Sale 670$13.96$9,353.20(4%)
18.93K to 18.27K
(32%)
17-Aug-16 5:37 PM
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Nektar Therapeutics (NKTR) 16-Aug-16Market Sale 1,336$17.56$23,460.20(7%)
20.27K to 18.93K
(5%)
18-Jul-16 5:04 PM
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Nektar Therapeutics (NKTR) 14-Jul-16Grant 10,500----1028%
1.02K to 11.52K
18-May-16 5:15 PM
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Nektar Therapeutics (NKTR) 17-May-16Market Option Sale 339$13.58$4,603.62(25%)
1.36K to 1.02K
(36%)
18-May-16 5:15 PM
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Nektar Therapeutics (NKTR) 16-May-16Option Exercise 875$0.00$0.09180%
0.48K to 1.36K
18-Feb-16 7:47 PM
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Nektar Therapeutics (NKTR) 17-Feb-16Market Option Sale 390$11.92$4,648.80(45%)
0.88K to 0.48K
(55%)
18-Feb-16 7:47 PM
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Nektar Therapeutics (NKTR) 16-Feb-16Option Exercise 875$0.00$0.09100%
0 to 0.88K