SEC CIK 1480111
Doberstein Stephen K
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| NKTRview stock → | 107,668 | 2019-09-05 |
Position History — NKTR
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — NKTR
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2019-09-05 | Open-market buy | 15,000 | $17.28 | 107,668 |
| 2019-08-16 | Open-market sale | 3,245 | $18.15 | 92,668 |
| 2019-05-16 | Open-market sale | 3,461 | $31.37 | 95,913 |
| 2019-02-19 | Open-market sale | 3,310 | $42.39 | 99,374 |
| 2018-12-14 | Grant / award (derivative) | 48,400 | $0.00 | 48,400 |
| 2018-12-14 | Grant / award | 23,950 | $0.00 | 102,684 |
| 2018-11-16 | Open-market sale | 4,524 | $38.25 | 78,734 |
| 2018-08-16 | Disposition to issuer | 6,701 | $58.40 | 83,258 |
| 2018-08-15 | Grant / award (derivative) | 65,000 | $0.00 | 65,000 |
| 2018-08-15 | Grant / award | 26,000 | $0.00 | 89,959 |
| 2018-05-16 | Open-market sale | 3,435 | $83.39 | 63,959 |
| 2018-04-09 | Option exercise (derivative) | 49,500 | $0.00 | 0 |
| 2018-04-09 | Open-market sale | 49,500 | $96.13 | 67,394 |
| 2018-04-09 | Option exercise | 49,500 | $7.21 | 116,894 |
| 2018-04-06 | Option exercise (derivative) | 60,000 | $0.00 | 0 |
| 2018-04-06 | Option exercise (derivative) | 500 | $0.00 | 49,500 |
| 2018-04-06 | Option exercise | 60,000 | $10.69 | 127,394 |
| 2018-04-06 | Option exercise | 50,000 | $7.21 | 177,394 |
| 2018-04-06 | Option exercise | 500 | $7.21 | 177,894 |
| 2018-04-06 | Open-market sale | 110,500 | $91.69 | 67,394 |
| 2018-02-16 | Open-market sale | 2,426 | $82.94 | 67,394 |
| 2017-12-15 | Grant / award (derivative) | 65,000 | $0.00 | 65,000 |
| 2017-12-15 | Grant / award | 26,000 | $0.00 | 69,820 |
| 2017-11-16 | Disposition to issuer | 4,782 | $44.23 | 43,820 |
| 2017-11-15 | Grant / award (derivative) | 43,750 | $0.00 | 43,750 |
| 2017-11-15 | Grant / award | 17,500 | $0.00 | 48,602 |
| 2017-11-08 | Option exercise (derivative) | 300,000 | $0.00 | 0 |
| 2017-11-08 | Option exercise | 300,000 | $9.53 | 331,102 |
| 2017-11-08 | Open-market sale | 300,000 | $30.09 | 31,102 |
| 2017-11-07 | Option exercise (derivative) | 75,409 | $0.00 | 300,000 |
| 2017-11-07 | Open-market sale | 75,409 | $25.78 | 31,102 |
| 2017-11-07 | Option exercise | 75,409 | $9.53 | 106,511 |
| 2017-11-06 | Option exercise (derivative) | 20,914 | $0.00 | 375,409 |
| 2017-11-06 | Open-market sale | 20,914 | $24.98 | 31,102 |
| 2017-11-06 | Option exercise | 20,914 | $9.53 | 52,016 |
| 2017-10-05 | Option exercise (derivative) | 43,677 | $0.00 | 396,323 |
| 2017-10-05 | Option exercise | 43,677 | $9.53 | 74,779 |
| 2017-10-05 | Open-market sale | 43,677 | $24.97 | 31,102 |
| 2017-08-16 | Open-market sale | 1,701 | $19.32 | 31,102 |
| 2017-05-16 | Open-market sale | 1,701 | $19.55 | 32,803 |
| 2017-04-05 | Option exercise (derivative) | 100,000 | $0.00 | 440,000 |
| 2017-04-05 | Option exercise | 100,000 | $9.53 | 134,504 |
| 2017-04-05 | Open-market sale | 100,000 | $21.70 | 34,504 |
| 2017-02-16 | Open-market sale | 1,261 | $13.14 | 34,504 |
| 2016-12-13 | Grant / award (derivative) | 43,750 | $0.00 | 43,750 |
| 2016-12-13 | Grant / award | 17,500 | $0.00 | 35,765 |
| 2016-11-16 | Open-market sale | 670 | $13.96 | 18,265 |
| 2016-08-16 | Open-market sale | 1,336 | $17.56 | 18,935 |
| 2016-07-14 | Grant / award (derivative) | 50,000 | $0.00 | 50,000 |
| 2016-07-14 | Grant / award (derivative) | 8,750 | $0.00 | 8,750 |
| 2016-07-14 | Grant / award | 10,500 | $0.00 | 11,521 |
| 2016-05-17 | Open-market sale | 339 | $13.58 | 1,021 |
| 2016-05-16 | Disposition to issuer (derivative) | 875 | $0.00 | 8,750 |
| 2016-05-16 | Option exercise | 875 | $0.00 | 1,360 |
| 2016-02-17 | Open-market sale | 390 | $11.92 | 485 |
| 2016-02-16 | Disposition to issuer (derivative) | 875 | $0.00 | 9,625 |
| 2016-02-16 | Option exercise | 875 | $0.00 | 875 |
| 2015-12-15 | Grant / award (derivative) | 8,750 | $0.00 | 8,750 |
| 2015-12-15 | Grant / award (derivative) | 10,500 | $0.00 | 10,500 |
| 2015-12-15 | Grant / award (derivative) | 10,500 | $0.00 | 10,500 |
| 2015-12-15 | Grant / award (derivative) | 8,750 | $0.00 | 8,750 |
| 2014-12-09 | Grant / award (derivative) | 50,000 | $0.00 | 50,000 |
| 2014-02-05 | Grant / award (derivative) | 50,000 | $0.00 | 50,000 |
| 2013-02-06 | Grant / award (derivative) | 50,000 | $0.00 | 50,000 |
| 2012-02-08 | Grant / award (derivative) | 50,000 | $7.21 | 50,000 |
| 2011-02-08 | Grant / award (derivative) | 60,000 | $10.69 | 60,000 |
| 2010-01-06 | Grant / award (derivative) | 540,000 | $9.53 | 540,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.