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Form 4 Filings | Insider Buys | Significant Buys |
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"Insiders might sell their shares for any number of reasons, but they buy them for only one:
they think the price will rise" - Peter Lynch ==>> What is insider trading>> |

| Transaction & Date | Reported Date |
Company | Symbol | Insider Relationship |
Shares Traded | Average Price | Total Amount |
Shares Ownership |
Filing |
| 2007-03-22 Sale |
2007-03-22 4:16 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman of the Board Director) | 17,700 | $12.23 | $216,471 | 240,792 (Direct) | View |
| 2007-01-08 Sale |
2007-01-09 3:12 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 3,592 | $14.51 | $52,120 | 208,619 (Direct) |
View |
| 2006-03-07 Sale |
2006-03-07 2:34 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,210 | $19.8 | $43,748 | 201,667 (Direct) |
View |
| 2004-03-08 Sale |
2004-03-10 6:21 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 56,600 | $22.69 | $1,284,396 | 221,654 (Direct) |
View |
| 2004-03-05 Sale | 2004-03-09 7:08 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 100,000 | $21.87 | $2,186,510 | 245,438 (Direct) | View |
| 2004-03-04 Sale | 2004-03-08 9:38 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 100,000 | $21.95 | $2,195,000 | 300,367 (Direct) |
View |
| 2004-02-19 Sale |
2004-02-23 7:04 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 5,100 | $19.9 | $101,490 | 319,034 (Direct) | View |
| 2004-02-10 Sale | 2004-02-12 6:32 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 68,300 | $19.92 | $1,360,506 | 320,921 (Direct) | View |
| 2003-10-15 Sale | 2003-10-17 1:00 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,800 | $15 | $42,000 | 343,929 (Direct) | View |
| 2003-10-14 Sale | 2003-10-16 6:57 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,800 | $15 | $42,000 | 343,929 (Direct) |
View |
| 2003-10-13 Sale | 2003-10-14 9:07 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 69,400 | $15.04 | $1,043,880 | 343,929 (Direct) |
View |
| Transaction & Date | Reported Date |
Company | Symbol | Insider Relationship |
Shares Traded |
Average Price |
Total Amount |
Shares Ownership |
Filing |
| 2008-11-14 Exercise |
2008-11-18 3:14 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 9,167 | $0 | $0 | 255,123 (Direct) |
View |
| 2007-03-19 Option Award |
2007-03-21 2:22 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman of the Board Director) | 52,083 | $0.01 | $521 | 258,492 (Direct) |
View |
| 2007-01-03 Option Award | 2007-01-05 1:56 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 8,334 | $0.01 | $83 | 212,211 (Direct) |
View |
| 2006-03-03 Option Award |
2006-03-07 2:34 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 5,555 | $0.01 | $56 | 203,877 (Direct) | View |
| 2005-03-14 Option Award |
2005-03-16 1:45 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,777 | $0 | $0 | 207,765 (Direct) | View |
| 2004-03-04 Option Award(A) | 2004-12-07 2:15 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 16,666 | $0 | $0 | 300,367 (Direct) | View |
| 2004-03-08 Exercise |
2004-03-10 6:21 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 32,816 | $13.69 | $449,246 | 221,654 (Direct) |
View |
| 2004-03-05 Exercise |
2004-03-09 7:08 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 45,071 | $8.852 | $398,962 | 245,438 (Direct) | View |
| 2004-03-04 Exercise Option Award | 2004-03-08 9:38 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 81,333 | $4.252 | $345,800 | 300,367 (Direct) | View |
| 2004-02-19 Exercise | 2004-02-23 7:04 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 3,213 | $5.062 | $16,266 | 319,034 (Direct) | View |
| 2004-02-10 Exercise | 2004-02-12 6:32 pm |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 45,292 | $4.611 | $208,843 | 320,921 (Direct) | View |
| 2003-10-15 Exercise |
2003-10-17 1:00 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,800 | $4.562 | $12,775 | 343,929 (Direct) |
View |
| 2003-10-14 Exercise |
2003-10-16 6:57 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,800 | $4.562 | $12,775 | 343,929 (Direct) |
View |
| 2003-10-13 Exercise | 2003-10-14 9:07 pm | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 48,400 | $4.108 | $198,841 | 343,929 (Direct) |
View |
| Transaction & Date |
Reported Date | Exercisable Expiration | Company | Symbol | Insider Relationship | Shares Traded |
Conversion Price |
Shares Ownership | Filing |
| 2009-09-15 Option Award |
2009-09-22 12:43 pm |
N/A 2017-09-15 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 15,000 | $8.37 | 15,000 (Direct) | View |
| 2009-09-15 Option Award |
2009-09-22 12:43 pm |
N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 50,000 | $0.01 | 5,000 (Direct) | View |
| 2009-09-15 Option Award |
2009-09-17 6:06 pm | N/A 2009-09-15 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 15,000 | $8.37 | 15,000 (Direct) | View |
| 2009-09-15 Option Award | 2009-09-17 6:06 pm |
N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 5,000 | $0.01 | 5,000 (Direct) | View |
| 2008-12-02 Option Award | 2008-12-04 4:23 pm |
N/A 2016-12-02 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 15,000 | $5.15 | 15,000 (Direct) | View |
| 2008-12-02 Option Award |
2008-12-04 4:23 pm | N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 5,000 | $0.01 | 5,000 (Direct) | View |
| 2008-11-14 Exercise |
2008-11-18 3:14 pm | 2008-11-14 2008-11-14 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 9,167 | $0 | 0 (Direct) | View |
| 2007-09-19 Option Award | 2007-09-21 5:49 pm | N/A 2015-09-19 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 15,000 | $8.81 | 982,464 (Direct) | View |
| 2007-09-17 Option Award | 2007-09-21 5:49 pm | N/A N/A | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Director) | 5,000 | $0.01 | 9,167 (Direct) | View |
| 2007-03-19 Option Sale | 2007-03-21 2:22 pm |
2007-03-19 N/A | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman of the Board Director) | 18,750 | $0.01 | 0 (Direct) |
View |
| 2007-03-19 Option Sale | 2007-03-21 2:22 pm | 2007-03-19 N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman of the Board Director) | 25,000 | $0.01 | 0 (Direct) |
View |
| 2007-03-19 Option Sale | 2007-03-21 2:22 pm |
2007-03-19 N/A | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman of the Board Director) | 8,333 | $0.01 | 0 (Direct) |
View |
| 2007-01-09 Option Sale |
2007-01-10 3:31 pm | N/A 2014-04-08 |
COTHERIX INC | CTRX | CHESS ROBERT (Director) | 33,330 | $4.29 | 0 (Direct) | View |
| 2007-01-09 Option Sale | 2007-01-10 3:31 pm | N/A 2014-04-08 | COTHERIX INC | CTRX | CHESS ROBERT (Director) | 6,060 | $4.29 | 0 (Direct) |
View |
| 2007-01-09 Option Sale | 2007-01-10 3:31 pm | N/A 2015-01-02 | COTHERIX INC | CTRX | CHESS ROBERT (Director) | 6,060 | $11.92 | 0 (Direct) |
View |
| 2007-01-09 Option Sale |
2007-01-10 3:31 pm | N/A 2016-01-02 | COTHERIX INC | CTRX | CHESS ROBERT (Director) | 6,060 | $10.58 | 0 (Direct) |
View |
| 2007-01-09 Option Sale | 2007-01-10 3:31 pm | N/A 2017-01-02 |
COTHERIX INC | CTRX | CHESS ROBERT (Director) | 9,090 | $13.49 | 0 (Direct) |
View |
| 2006-06-30 Option Award |
2007-01-09 3:14 pm | N/A N/A | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 25,000 | $0.01 | 57,639 (Direct) | View |
| 2007-01-03 Option Award |
2007-01-09 3:12 pm | N/A 2015-01-03 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 17,000 | $15.24 | 934,964 (Direct) | View |
| 2007-01-03 Option Award | 2007-01-09 3:12 pm | N/A 2015-01-03 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 12,500 | $15.24 | 947,464 (Direct) |
View |
| 2007-01-03 Option Award | 2007-01-09 3:12 pm | N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 8,333 | $0.01 | 57,638 (Direct) |
View |
| 2007-01-03 Option Award |
2007-01-09 3:12 pm | N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 4,167 | $0.01 | 61,805 (Direct) |
View |
| 2007-01-03 Option Award | 2007-01-05 3:01 pm |
2007-01-03 2017-01-02 |
COTHERIX INC | CTRX | CHESS ROBERT (Director) | 9,090 | $13.47 | 9,090 (Direct) | View |
| 2007-01-03 Option Sale |
2007-01-05 1:56 pm |
2007-01-03 N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 8,334 | $0.01 | 0 (Direct) | View |
| 2006-06-30 Option Award | 2006-06-30 5:24 pm | N/A 2014-06-30 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 50,000 | $18.34 | 917,964 (Direct) |
View |
| 2006-06-30 Option Award | 2006-06-30 5:24 pm |
N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Chairman, Pres. & CEO Director) | 25,000 | $0.01 | 57,639 (Direct) |
View |
| 2006-03-03 Option Sale |
2006-03-07 2:34 pm |
2006-03-03 N/A | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 5,555 | $0.01 | 8,334 (Direct) | View |
| 2006-02-24 Option Award |
2006-03-07 2:26 pm | N/A 2014-02-24 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 37,500 | $21.38 | 867,964 (Direct) | View |
| 2006-02-24 Option Award | 2006-03-07 2:26 pm | N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 18,750 | $0.01 | 32,639 (Direct) |
View |
| 2006-02-24 Option Award |
2006-02-24 3:18 pm |
N/A 2014-02-24 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 37,500 | $21.5 | 867,964 (Direct) |
View |
| 2006-02-24 Option Award | 2006-02-24 3:18 pm | N/A N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 18,750 | $0.01 | 32,639 (Direct) |
View |
| 2006-01-03 Option Award | 2006-01-19 5:03 pm |
2006-01-03 2016-01-02 |
COTHERIX INC | CTRX | CHESS ROBERT (Director) | 6,060 | $10.58 | 6,060 (Direct) | View |
| 2005-08-11 Option Award |
2005-08-12 11:35 am | 2006-08-11 2015-08-11 | PHARSIGHT CORP | PHST | CHESS ROBERT (Director) | 10,000 | $2 | 10,000 (Direct) |
View |
| 2005-03-14 Option Sale |
2005-03-16 1:45 pm |
2005-03-14 N/A |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,777 | $0 | 13,889 (Direct) |
View |
| 2004-03-04 Option Award | 2005-03-16 1:43 pm |
N/A N/A | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 16,666 | $0 | 16,666 (Direct) | View |
| 2005-02-12 Option Award |
2005-02-14 1:32 pm | N/A 2015-02-12 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 25,000 | $18.08 | 850,464 (Direct) | View |
| 2005-01-03 Option Award |
2005-01-03 6:14 pm |
2005-01-03 2015-01-02 |
COTHERIX INC | CTRX | CHESS ROBERT (Director) | 6,060 | $11.92 | 6,060 (Direct) |
View |
| 2004-08-13 Option Award |
2004-09-20 7:54 pm | 2005-08-13 2014-08-13 | PHARSIGHT CORP | PHST | CHESS ROBERT (Director) | 10,000 | $1.01 | 10,000 (Direct) |
View |
| 2004-03-08 Option Sale |
2004-03-10 6:21 pm | N/A 2013-06-05 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 6,808 | $11.55 | 816,021 (Direct) |
View |
| 2004-03-08 Option Sale | 2004-03-10 6:21 pm | N/A 2009-02-23 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 26,008 | $14.25 | 816,021 (Direct) | View |
| 2004-03-05 Option Sale |
2004-03-09 7:08 pm | N/A 2012-10-31 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 9,704 | $6.12 | 848,837 (Direct) | View |
| 2004-03-05 Option Sale | 2004-03-09 7:08 pm |
N/A 2007-01-28 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 30,800 | $9.312 | 848,837 (Direct) |
View |
| 2004-03-05 Option Sale |
2004-03-09 7:08 pm |
N/A 2013-06-05 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 4,567 | $11.55 | 848,837 (Direct) | View |
| 2004-03-04 Option Sale | 2004-03-08 9:38 pm |
N/A 2006-01-23 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 48,391 | $5.062 | 893,908 (Direct) | View |
| 2004-03-04 Option Sale |
2004-03-08 9:38 pm |
N/A 2007-01-07 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 538 | $8.062 | 893,908 (Direct) |
View |
| 2004-03-04 Option Sale | 2004-03-08 9:38 pm | N/A 2012-10-31 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 15,738 | $6.12 | 893,908 (Direct) |
View |
| 2004-03-04 Option Award |
2004-03-08 9:38 pm |
N/A 2014-03-04 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 33,333 | $19.55 | 893,908 (Direct) | View |
| 2004-02-19 Option Sale | 2004-02-23 7:04 pm |
N/A 2006-01-23 | NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 3,213 | $5.062 | 925,242 (Direct) |
View |
| 2004-02-10 Option Sale |
2004-02-12 6:32 pm |
N/A 2005-01-18 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 40,896 | $4.562 | 928,455 (Direct) | View |
| 2004-02-10 Option Sale |
2004-02-12 6:32 pm | N/A 2006-01-23 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 4,396 | $5.062 | 928,455 (Direct) | View |
| 2003-10-15 Option Sale |
2003-10-17 1:00 pm |
N/A 2005-01-18 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,800 | $4.562 | 973,747 (Direct) |
View |
| 2003-10-14 Option Sale | 2003-10-16 6:57 pm |
N/A 2005-01-18 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 2,800 | $4.562 | 976,547 (Direct) | View |
| 2003-10-13 Option Sale | 2003-10-14 9:07 pm |
N/A 2004-01-31 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 12,318 | $2.778 | 979,347 (Direct) | View |
| 2003-10-13 Option Sale | 2003-10-14 9:07 pm | N/A 2005-01-18 |
NEKTAR THERAPEUTICS | NKTR | CHESS ROBERT (Executive Chairman Director) | 36,082 | $4.562 | 979,347 (Direct) |
View |
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