Joseph J Krivulka
CIK 1296750 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 19, 2005 · Latest: Sept. 19, 2005
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 35 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 19, 2017 | NKTR | A | 22,500 | — | — | 22,500 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 19, 2017 | NKTR | A | 9,000 | — | — | 82,000 Direct | +12.33% | Acquired | (price as of 2026-08-21) |
| June 26, 2017 | NKTR | M | 15,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| June 26, 2017 | NKTR | M | 15,000 | $8.37 | $125,550 | 73,000 Direct | +25.86% | Acquired | -40.2% (price as of 2026-08-21) |
| Sept. 21, 2016 | NKTR | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 21, 2016 | NKTR | A | 8,000 | — | — | 58,000 Direct | +16.00% | Acquired | (price as of 2026-08-21) |
| Sept. 15, 2016 | NKTR | M | 15,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Sept. 15, 2016 | NKTR | M | 15,000 | — | — | 50,000 Direct | +42.86% | Acquired | (price as of 2026-08-21) |
| Sept. 15, 2015 | NKTR | A | 15,000 | — | — | 15,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 15, 2015 | NKTR | A | 12,500 | — | — | 12,500 Direct | — | Acquired | (price as of 2026-08-21) |
| July 24, 2015 | NKTR | M | 15,000 | — | — | 0 Direct | — | Acquired | (price as of 2026-08-21) |
| July 24, 2015 | NKTR | M | 15,000 | $8.81 | $132,150 | 35,000 Direct | +75.00% | Acquired | -43.1% (price as of 2026-08-21) |
| Sept. 23, 2014 | NKTR | A | 45,000 | — | — | 45,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 19, 2013 | NKTR | A | 40,000 | — | — | 40,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 14, 2012 | NKTR | A | 40,000 | — | — | 40,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 13, 2011 | NKTR | A | 30,000 | $5.14 | $154,200 | 30,000 Direct | — | Acquired | -2.6% (price as of 2026-08-21) |
| March 7, 2011 | NKTR | M | 10,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| March 7, 2011 | NKTR | M | 10,000 | — | — | 20,000 Direct | +100.00% | Acquired | (price as of 2026-08-21) |
| Sept. 14, 2010 | NKTR | A | 30,000 | $14.26 | $427,800 | 30,000 Direct | — | Acquired | -64.9% (price as of 2026-08-21) |
| Sept. 14, 2010 | NKTR | A | 30,000 | $14.05 | $421,500 | 30,000 Direct | — | Acquired | -64.4% (price as of 2026-08-21) |
| Sept. 15, 2009 | NKTR | A | 15,000 | $8.37 | $125,550 | 15,000 Direct | — | Acquired | -40.2% (price as of 2026-08-21) |
| Sept. 15, 2009 | NKTR | A | 5,000 | $0.01 | $50 | 5,000 Direct | — | Acquired | 49986.9% (price as of 2026-08-21) |
| Dec. 2, 2008 | NKTR | A | 5,000 | $0.01 | $50 | 5,000 Direct | — | Acquired | 49986.9% (price as of 2026-08-21) |
| Dec. 2, 2008 | NKTR | A | 15,000 | $5.15 | $77,250 | 15,000 Direct | — | Acquired | -2.7% (price as of 2026-08-21) |
| Nov. 14, 2008 | NKTR | M | 5,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Nov. 14, 2008 | NKTR | M | 5,000 | — | — | 10,000 Direct | +100.00% | Acquired | (price as of 2026-08-21) |
| Nov. 16, 2007 | NKTR | D | 5,000 | $0.01 | $50 | 5,000 Direct | -50.00% | Disposed | 49986.9% (price as of 2026-08-21) |
| Nov. 16, 2007 | NKTR | A | 5,000 | $0.01 | $50 | 5,000 Direct | — | Acquired | 49986.9% (price as of 2026-08-21) |
| Sept. 19, 2007 | NKTR | A | 5,000 | $0.01 | $50 | 10,000 Direct | +100.00% | Acquired | 49986.9% (price as of 2026-08-21) |
| Sept. 19, 2007 | NKTR | A | 15,000 | $8.81 | $132,150 | 82,500 Direct | +22.22% | Acquired | -43.1% (price as of 2026-08-21) |
| Sept. 20, 2006 | NKTR | A | 5,000 | $0.01 | $50 | 5,000 Direct | — | Acquired | 49986.9% (price as of 2026-08-21) |
| Sept. 20, 2006 | NKTR | A | 15,000 | $14.36 | $215,400 | 67,500 Direct | +28.57% | Acquired | -65.1% (price as of 2026-08-21) |
| Sept. 16, 2005 | NKTR | A | 12,500 | — | — | 42,500 Direct | +41.67% | Acquired | (price as of 2026-08-21) |
| June 2, 2005 | NKTR | A | 30,000 | — | — | 40,000 Direct | +300.00% | Acquired | (price as of 2026-08-21) |
| March 21, 2005 | NKTR | A | 10,000 | $13.46 | $134,600 | 10,000 Direct | — | Acquired | -62.8% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Sept. 19, 2017 | NKTR | Stock Option | common stock (22,500) | $21.75 | Sept. 18, 2025 | 22,500 | Acquired |
| June 26, 2017 | NKTR | Stock Option | Common Stock (15,000) | $8.37 | Sept. 14, 2017 | 15,000 | Disposed |
| Sept. 21, 2016 | NKTR | Stock Option | Common Stock (20,000) | $19.15 | Sept. 20, 2024 | 20,000 | Acquired |
| Sept. 15, 2016 | NKTR | Restricted Stock Unit | Common Stock (15,000) | — | — | 15,000 | Disposed |
| Sept. 15, 2015 | NKTR | Restricted Stock Unit | Common Stock (15,000) | — | Sept. 14, 2023 | 15,000 | Acquired |
| Sept. 15, 2015 | NKTR | Stock Option | Common Stock (12,500) | $12.80 | Sept. 14, 2023 | 12,500 | Acquired |
| July 24, 2015 | NKTR | Stock Option | Common Stock (15,000) | $8.81 | Sept. 18, 2015 | 15,000 | Acquired |
| Sept. 23, 2014 | NKTR | Stock Option | Common Stock (45,000) | $12.70 | Sept. 22, 2022 | 45,000 | Acquired |
| Sept. 19, 2013 | NKTR | Stock Option | Common Stock (40,000) | $13.80 | Sept. 18, 2021 | 40,000 | Acquired |
| Sept. 14, 2012 | NKTR | Stock Option | Common Stock (40,000) | $9.24 | Sept. 13, 2020 | 40,000 | Acquired |
| Sept. 13, 2011 | NKTR | Stock Option [F1] | Common Stock (30,000) | $5.14 | Sept. 12, 2019 | 30,000 | Acquired |
| March 7, 2011 | NKTR | Restricted Stock Unit | Common Stock (10,000) | — | March 7, 2011 | 10,000 | Disposed |
| Sept. 14, 2010 | NKTR | Stock Option [F1] | Common Stock (30,000) | $14.26 | Sept. 14, 2018 | 30,000 | Acquired |
| Sept. 14, 2010 | NKTR | Stock Option [F1] | Common Stock (30,000) | $14.05 | Sept. 14, 2018 | 30,000 | Acquired |
| Sept. 15, 2009 | NKTR | Stock Option [F1] | Common Stock (15,000) | $8.37 | Sept. 15, 2017 | 15,000 | Acquired |
| Sept. 15, 2009 | NKTR | Restricted Stock Unit | Common Stock (5,000) | $0.01 | — | 5,000 | Acquired |
| Dec. 2, 2008 | NKTR | Restricted Stock Unit [F1] | Common Stock (5,000) | $0.01 | — | 5,000 | Acquired |
| Dec. 2, 2008 | NKTR | Stock Option [F1] | Common Stock (15,000) | $5.15 | Dec. 2, 2016 | 15,000 | Acquired |
| Nov. 14, 2008 | NKTR | Restricted Stock Unit | Common Stock (5,000) | — | Nov. 14, 2008 | 5,000 | Disposed |
| Nov. 16, 2007 | NKTR | Restricted Stcok Unit | Common Stock (5,000) | $0.01 | — | 5,000 | Disposed |
| Sept. 19, 2007 | NKTR | Restricted Stock Unit [F1] | Common Stock (5,000) | $0.01 | — | 5,000 | Acquired |
| Sept. 19, 2007 | NKTR | Stock Option (Right to Buy) [F1] | Common Stock (15,000) | $8.81 | Sept. 19, 2015 | 15,000 | Acquired |
| Sept. 20, 2006 | NKTR | Restricted Stock Unit [F1] | Common Stock (5,000) | $0.01 | — | 5,000 | Acquired |
| Sept. 20, 2006 | NKTR | Stock Option (Right to Buy) [F1] | Common Stock (15,000) | $14.36 | Sept. 20, 2014 | 15,000 | Acquired |
| Sept. 16, 2005 | NKTR | Stock Option (Right to Buy) | Common Stock (12,500) | $17.98 | Sept. 16, 2013 | 12,500 | Acquired |
| June 2, 2005 | NKTR | Stock Option (Right to Buy) | Common Stock (30,000) | $18.19 | June 2, 2013 | 30,000 | Acquired |
| March 21, 2005 | NKTR | Employee Stock Option (Right to Buy) | Common Stock (10,000) | $13.46 | March 21, 2015 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).