Howard W Robin

CIK 1206869 · View on SEC EDGAR ↗

Insider

First SEC filing: Jan. 16, 2007 · Latest: Jan. 16, 2007

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Insider at

Insider transactions

0 buys (P) 19 sells (S) Net: $-2,182,229 + 42 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

42 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
June 17, 2026 NKTR S 10b5-1 5,500 $60.81 $334,455 59,545 Direct -8.46% Disposed 23.0% (price as of 2026-08-20)
June 17, 2026 NKTR S 10b5-1 4,500 $61.65 $277,425 55,045 Direct -7.56% Disposed 21.3% (price as of 2026-08-20)
June 16, 2026 NKTR S 10b5-1 4,697 $60.71 $285,155 65,045 Direct -6.73% Disposed 23.2% (price as of 2026-08-20)
June 16, 2026 NKTR S 10b5-1 5,303 $59.97 $318,021 69,742 Direct -7.07% Disposed 24.7% (price as of 2026-08-20)
May 19, 2026 NKTR S 444 $65.51 $29,086 75,045 Direct -0.59% Disposed 14.2% (price as of 2026-08-20)
Feb. 18, 2026 NKTR S 423 $73.00 $30,879 75,489 Direct -0.56% Disposed 2.5% (price as of 2026-08-20)
Nov. 25, 2025 NKTR S 2,207 $54.28 $119,796 54,245 Direct -3.91% Disposed 37.8% (price as of 2026-08-20)
Sept. 9, 2025 NKTR S 10b5-1 1,210 $48.18 $58,298 49,342 Direct -2.39% Disposed 55.3% (price as of 2026-08-20)
Sept. 9, 2025 NKTR S 10b5-1 2,156 $47.49 $102,388 50,552 Direct -4.09% Disposed 57.5% (price as of 2026-08-20)
Sept. 9, 2025 NKTR S 10b5-1 1,200 $46.41 $55,692 52,708 Direct -2.23% Disposed 61.2% (price as of 2026-08-20)
Sept. 9, 2025 NKTR S 10b5-1 2,100 $45.16 $94,836 53,908 Direct -3.75% Disposed 65.6% (price as of 2026-08-20)
Sept. 5, 2025 NKTR S 10b5-1 1,136 $39.89 $45,315 56,008 Direct -1.99% Disposed 87.5% (price as of 2026-08-20)
Sept. 5, 2025 NKTR S 10b5-1 2,226 $38.82 $86,413 57,144 Direct -3.75% Disposed 92.7% (price as of 2026-08-20)
Sept. 5, 2025 NKTR S 10b5-1 3,304 $37.87 $125,122 59,370 Direct -5.27% Disposed 97.5% (price as of 2026-08-20)
Sept. 4, 2025 NKTR S 10b5-1 1,134 $35.80 $40,597 62,674 Direct -1.78% Disposed 109.0% (price as of 2026-08-20)
Sept. 4, 2025 NKTR S 10b5-1 613 $34.40 $21,087 63,808 Direct -0.95% Disposed 117.5% (price as of 2026-08-20)
Sept. 4, 2025 NKTR S 10b5-1 1,496 $33.54 $50,176 64,421 Direct -2.27% Disposed 123.0% (price as of 2026-08-20)
Sept. 4, 2025 NKTR S 10b5-1 1,923 $32.37 $62,248 65,917 Direct -2.83% Disposed 131.1% (price as of 2026-08-20)
Sept. 2, 2025 NKTR S 10b5-1 1,500 $30.16 $45,240 67,840 Direct -2.16% Disposed 148.0% (price as of 2026-08-20)
Aug. 19, 2025 NKTR S 1,573 $26.59 $41,826 69,340 Direct -2.22% Disposed 181.3% (price as of 2026-08-20)
May 19, 2025 NKTR S 23,208 $0.67 $15,549 1,063,693 Direct -2.14% Disposed 644.3% (price as of 2026-08-20)
Feb. 19, 2025 NKTR S 23,774 $1.01 $24,012 1,086,901 Direct -2.14% Disposed 393.8% (price as of 2026-08-20)
Dec. 18, 2024 NKTR S 85,035 $0.99 $84,185 1,110,675 Direct -7.11% Disposed 403.7% (price as of 2026-08-20)
Dec. 17, 2024 NKTR S 46,995 $1.01 $47,465 1,195,710 Direct -3.78% Disposed 393.8% (price as of 2026-08-20)
Nov. 19, 2024 NKTR S 16,278 $1.01 $16,441 832,080 Direct -1.92% Disposed 393.8% (price as of 2026-08-20)
Aug. 19, 2024 NKTR S 14,881 $1.28 $19,048 848,358 Direct -1.72% Disposed 289.6% (price as of 2026-08-20)
May 17, 2024 NKTR S 16,650 $1.75 $29,138 863,239 Direct -1.89% Disposed 185.0% (price as of 2026-08-20)
Feb. 20, 2024 NKTR S 20,033 $0.68 $13,622 879,889 Direct -2.23% Disposed 633.4% (price as of 2026-08-20)
Nov. 17, 2023 NKTR S 19,877 $0.49 $9,740 899,922 Direct -2.16% Disposed 917.8% (price as of 2026-08-20)
Aug. 16, 2023 NKTR S 19,998 $0.78 $15,598 919,799 Direct -2.13% Disposed 539.4% (price as of 2026-08-20)
May 16, 2023 NKTR S 20,361 $0.72 $14,660 939,797 Direct -2.12% Disposed 592.6% (price as of 2026-08-20)
Feb. 16, 2023 NKTR S 19,635 $3.00 $58,905 960,158 Direct -2.00% Disposed 66.2% (price as of 2026-08-20)
Nov. 16, 2022 NKTR S 38,014 $3.57 $135,710 979,793 Direct -3.73% Disposed 39.7% (price as of 2026-08-20)
Aug. 16, 2022 NKTR S 13,759 $4.76 $65,493 1,017,807 Direct -1.33% Disposed 4.8% (price as of 2026-08-20)
May 16, 2022 NKTR S 36,529 $3.95 $144,290 620,941 Direct -5.56% Disposed 26.3% (price as of 2026-08-20)
Feb. 16, 2022 NKTR S 12,480 $10.95 $136,656 589,020 Direct -2.07% Disposed -54.5% (price as of 2026-08-20)
Nov. 16, 2021 NKTR S 42,773 $13.16 $562,893 475,450 Direct -8.25% Disposed -62.1% (price as of 2026-08-20)
Aug. 16, 2021 NKTR S 11,515 $13.83 $159,252 424,123 Direct -2.64% Disposed -63.9% (price as of 2026-08-20)
May 17, 2021 NKTR S 11,560 $18.30 $211,548 435,638 Direct -2.58% Disposed -72.7% (price as of 2026-08-20)
Feb. 16, 2021 NKTR S 11,495 $22.37 $257,143 447,198 Direct -2.51% Disposed -77.7% (price as of 2026-08-20)
Feb. 4, 2021 NKTR S 10b5-1 58,137 $20.58 $1,196,459 458,693 Direct -11.25% Disposed -75.8% (price as of 2026-08-20)
Feb. 4, 2021 NKTR S 10b5-1 91,863 $20.10 $1,846,446 516,830 Direct -15.09% Disposed -75.2% (price as of 2026-08-20)
Feb. 3, 2021 NKTR S 10b5-1 150,000 $19.72 $2,958,000 458,693 Direct -24.64% Disposed -74.7% (price as of 2026-08-20)
Feb. 2, 2021 NKTR S 10b5-1 600 $21.59 $12,954 458,693 Direct -0.13% Disposed -76.9% (price as of 2026-08-20)
Feb. 2, 2021 NKTR S 10b5-1 9,900 $20.84 $206,316 459,293 Direct -2.11% Disposed -76.1% (price as of 2026-08-20)
Feb. 2, 2021 NKTR S 10b5-1 139,500 $19.69 $2,746,755 469,193 Direct -22.92% Disposed -74.7% (price as of 2026-08-20)
Nov. 16, 2020 NKTR S 11,975 $16.93 $202,737 352,043 Direct -3.29% Disposed -70.5% (price as of 2026-08-20)
Aug. 17, 2020 NKTR S 11,885 $19.67 $233,778 364,018 Direct -3.16% Disposed -74.6% (price as of 2026-08-20)
May 18, 2020 NKTR S 8,968 $22.51 $201,870 375,903 Direct -2.33% Disposed -77.8% (price as of 2026-08-20)
Feb. 18, 2020 NKTR S 8,448 $22.35 $188,813 384,871 Direct -2.15% Disposed -77.7% (price as of 2026-08-20)
Nov. 18, 2019 NKTR S 13,556 $17.97 $243,601 299,219 Direct -4.33% Disposed -72.2% (price as of 2026-08-20)
Oct. 17, 2019 NKTR S 10b5-1 33,333 $17.68 $589,327 312,775 Direct -9.63% Disposed -71.8% (price as of 2026-08-20)
Oct. 16, 2019 NKTR S 10b5-1 33,334 $17.48 $582,678 312,775 Direct -9.63% Disposed -71.5% (price as of 2026-08-20)
Oct. 15, 2019 NKTR S 10b5-1 24,500 $17.17 $420,665 312,775 Direct -7.26% Disposed -71.0% (price as of 2026-08-20)
Oct. 15, 2019 NKTR S 10b5-1 8,833 $16.35 $144,420 337,275 Direct -2.55% Disposed -69.5% (price as of 2026-08-20)
Aug. 16, 2019 NKTR S 12,551 $18.15 $227,801 282,775 Direct -4.25% Disposed -72.5% (price as of 2026-08-20)
July 25, 2019 NKTR S 10b5-1 33,333 $29.65 $988,323 295,326 Direct -10.14% Disposed -83.2% (price as of 2026-08-20)
July 24, 2019 NKTR S 10b5-1 33,334 $32.11 $1,070,355 295,326 Direct -10.14% Disposed -84.5% (price as of 2026-08-20)

Showing latest 100 of 273 transactions

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
July 24, 2026 NKTR Stock Option [F1] Common Stock (57,200) $15.15 Dec. 12, 2032 57,200 Acquired
Dec. 22, 2025 NKTR Stock Option Common Stock (86,667) $43.48 Dec. 21, 2033 86,667 Acquired
Nov. 21, 2025 NKTR Stock Option [F5] Common Stock (12,170) $281.25 Dec. 17, 2028 12,170 Acquired
Aug. 19, 2025 NKTR Stock Option [F4] Common Stock (86,666) $0.50 Dec. 12, 2031 86,666 Acquired
Dec. 13, 2024 NKTR Stock Option Common Stock (1,300,000) $1.01 Dec. 12, 2032 1,300,000 Acquired
Dec. 13, 2024 NKTR Stock Option [F3] Common Stock (821,250) $4.91 Aug. 14, 2030 821,250 Acquired
Dec. 13, 2023 NKTR Stock Option Common Stock (1,300,000) $0.50 Dec. 12, 2031 1,300,000 Acquired
Aug. 15, 2022 NKTR Common Stock [F4] Common Stock (821,250) $4.91 Aug. 14, 2030 821,250 Acquired
Dec. 16, 2021 NKTR Stock Option Common Stock (223,750) $13.22 Dec. 15, 2029 223,750 Acquired
Oct. 12, 2021 NKTR Stock Option [F1] Common Stock (167,650) $21.79 Dec. 11, 2027 167,650 Acquired
Feb. 4, 2021 NKTR Stock Option [F1] Common Stock (150,000) $8.80 Feb. 5, 2021 150,000 Disposed
Feb. 3, 2021 NKTR Stock Option [F1] Common Stock (75,000) $8.80 Feb. 5, 2021 75,000 Disposed
Feb. 3, 2021 NKTR Stock Option [F1] Common Stock (75,000) $8.80 Feb. 5, 2021 75,000 Disposed
Feb. 2, 2021 NKTR Stock Option [F1] Common Stock (150,000) $8.80 Feb. 5, 2021 150,000 Disposed
Dec. 18, 2020 NKTR Stock Option Common Stock (190,650) $18.75 Dec. 17, 2028 190,650 Acquired
Dec. 12, 2019 NKTR Stock Option Common Stock (44,600) $21.79 Dec. 11, 2027 44,600 Acquired
Dec. 12, 2019 NKTR Stock Option Common Stock (167,650) $21.79 Dec. 11, 2027 167,650 Acquired
Oct. 17, 2019 NKTR Stock Option [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
Oct. 16, 2019 NKTR Stock Option [F1] Common Stock (33,334) $7.21 Feb. 7, 2020 33,334 Disposed
Oct. 15, 2019 NKTR Stock Option [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
Aug. 23, 2019 NKTR Common Stock Common Stock (30,000) $16.31 Dec. 8, 2022 30,000 Disposed
July 25, 2019 NKTR Common Stock [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
July 24, 2019 NKTR Common Stock [F1] Common Stock (33,334) $7.21 Feb. 7, 2020 33,334 Disposed
July 23, 2019 NKTR Common Stock [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
May 23, 2019 NKTR Common Stock [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
May 22, 2019 NKTR Common Stock [F1] Common Stock (33,334) $7.21 Feb. 7, 2020 33,334 Disposed
May 21, 2019 NKTR Common Stock [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
Feb. 21, 2019 NKTR Common Stock [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
Feb. 20, 2019 NKTR Common Stock [F1] Common Stock (33,334) $7.21 Feb. 7, 2020 33,334 Disposed
Feb. 19, 2019 NKTR Common Stock [F1] Common Stock (33,333) $7.21 Feb. 7, 2020 33,333 Disposed
Dec. 14, 2018 NKTR Stock Option Common Stock (138,350) $36.51 Dec. 13, 2026 138,350 Acquired
Aug. 15, 2018 NKTR Stock Option [F6] Common Stock (151,250) $56.90 Dec. 14, 2025 151,250 Acquired
Aug. 14, 2018 NKTR Stock Option [F1] Common Stock (40,000) $10.69 Feb. 7, 2019 40,000 Disposed
June 27, 2018 NKTR Stock Option [F1] Common Stock (43,333) $10.69 Feb. 7, 2019 43,333 Disposed
June 26, 2018 NKTR Stock Option [F1] Common Stock (43,333) $10.69 Feb. 7, 2019 43,333 Disposed
June 25, 2018 NKTR Stock Option [F1] Common Stock (43,334) $10.69 Feb. 7, 2019 43,334 Disposed
May 3, 2018 NKTR Stock Option [F1] Common Stock (43,333) $10.69 Feb. 7, 2019 43,333 Disposed
May 2, 2018 NKTR Stock Option [F1] Common Stock (43,333) $10.69 Feb. 7, 2019 43,333 Disposed
May 1, 2018 NKTR Stock Option [F1] Common Stock (43,334) $10.69 Feb. 7, 2019 43,334 Disposed
Jan. 22, 2018 NKTR Stock Option [F1] Common Stock (83,333) $11.34 Jan. 31, 2018 83,333 Disposed
Dec. 15, 2017 NKTR Stock Option Common Stock (151,250) $56.90 Dec. 14, 2025 151,250 Acquired
Dec. 13, 2017 NKTR Stock Option [F1] Common Stock (83,333) $11.34 Jan. 31, 2018 83,333 Disposed
Nov. 15, 2017 NKTR Stock Option [F5] Common Stock (137,500) $14.41 Dec. 12, 2024 137,500 Acquired
Nov. 1, 2017 NKTR Stock Option [F1] Common Stock (83,334) $11.34 Jan. 31, 2018 83,334 Disposed
Oct. 9, 2017 NKTR Stock Option [F1] Common Stock (83,333) $11.34 Jan. 31, 2018 83,333 Disposed
Sept. 6, 2017 NKTR Stock Option [F1] Common Stock (83,333) $11.34 Jan. 31, 2018 83,333 Disposed
Aug. 16, 2017 NKTR Stock Option [F3] Common Stock (83,334) $11.34 Jan. 31, 2018 83,334 Disposed
Feb. 8, 2017 NKTR Stock Option [F1] Common Stock (87,500) $4.65 Feb. 22, 2017 87,500 Disposed
Jan. 17, 2017 NKTR Stock Option [F1] Common Stock (87,500) $4.65 Feb. 22, 2017 87,500 Disposed
Dec. 13, 2016 NKTR Stock Option Common Stock (137,500) $12.24 Dec. 12, 2024 137,500 Acquired
Dec. 7, 2016 NKTR Stock Option [F1] Common Stock (87,500) $4.65 Feb. 22, 2017 87,500 Disposed
Nov. 17, 2016 NKTR Stock Option [F2] Common Stock (87,500) $4.65 Feb. 22, 2017 87,500 Disposed
Oct. 4, 2016 NKTR Stock Option [F1] Common Stock (87,500) $4.65 Feb. 22, 2017 87,500 Disposed
Sept. 1, 2016 NKTR Stock Option [F1] Common Stock (87,500) $4.65 Feb. 22, 2017 87,500 Disposed
July 14, 2016 NKTR Stock Option [F6] Common Stock (56,250) $15.55 Dec. 14, 2023 56,250 Acquired
July 14, 2016 NKTR Stock Option [F3] Common Stock (225,000) $16.31 Dec. 8, 2022 225,000 Acquired
May 16, 2016 NKTR Restricted Stock Unit Common Stock (5,625) $0.00 May 16, 2016 5,625 Disposed
Feb. 16, 2016 NKTR Restricted Stock Unit Common Stock (5,625) $0.00 Feb. 16, 2016 5,625 Disposed
Feb. 10, 2016 NKTR Stock Option [F1] Common Stock (66,666) $6.46 Feb. 24, 2016 66,666 Disposed
Jan. 19, 2016 NKTR Stock Option [F1] Common Stock (66,667) $6.46 Feb. 24, 2016 66,667 Disposed
Dec. 15, 2015 NKTR Stock Option Common Stock (56,250) $15.55 Dec. 14, 2023 56,250 Acquired
Dec. 15, 2015 NKTR Restricted Stock Unit Common Stock (67,500) — Dec. 14, 2023 67,500 Acquired
Dec. 15, 2015 NKTR Stock Option Common Stock (67,500) $15.55 Dec. 14, 2023 67,500 Acquired
Dec. 15, 2015 NKTR Restricted Stock Unit Common Stock (56,250) — Dec. 14, 2023 56,250 Acquired
Dec. 3, 2015 NKTR Stock Option [F1] Common Stock (66,667) $6.46 Feb. 24, 2016 66,667 Disposed
Dec. 3, 2015 NKTR Stock Option [F1] Common Stock (58,334) $6.98 Dec. 20, 2015 58,334 Disposed
Nov. 11, 2015 NKTR Stock Option [F1] Common Stock (66,667) $6.46 Feb. 24, 2016 66,667 Disposed
Nov. 11, 2015 NKTR Stock Option [F1] Common Stock (58,333) $6.98 Dec. 20, 2015 58,333 Disposed
Oct. 6, 2015 NKTR Stock Option [F1] Common Stock (66,667) $6.46 Feb. 24, 2016 66,667 Disposed
Oct. 6, 2015 NKTR Stock Option [F1] Common Stock (58,333) $6.98 Dec. 20, 2015 58,333 Disposed
Sept. 23, 2015 NKTR Stock Option [F1] Common Stock (66,666) $6.46 Feb. 24, 2016 66,666 Disposed
Sept. 23, 2015 NKTR Stock Option [F1] Common Stock (58,333) $6.98 Dec. 20, 2015 58,333 Disposed
Aug. 13, 2015 NKTR Stock Option [F1] Common Stock (58,333) $6.98 Dec. 20, 2015 58,333 Disposed
July 14, 2015 NKTR Stock Option [F1] Common Stock (58,334) $6.98 Dec. 20, 2015 58,334 Disposed
Dec. 9, 2014 NKTR Stock Option Common Stock (225,000) $16.31 Dec. 8, 2022 225,000 Acquired
Dec. 9, 2014 NKTR Stock Option Common Stock (225,000) $16.31 Dec. 8, 2022 225,000 Acquired
Dec. 1, 2014 NKTR Stock Option [F1] Common Stock (209,056) $6.98 Dec. 20, 2015 209,056 Disposed
Nov. 28, 2014 NKTR Stock Option [F1] Common Stock (140,944) $6.98 Dec. 20, 2015 140,944 Disposed
Nov. 25, 2014 NKTR Stock Option [F1] Common Stock (467,200) $14.52 Jan. 15, 2015 467,200 Disposed
Nov. 24, 2014 NKTR Stock Option [F1] Common Stock (132,800) $14.52 Jan. 15, 2015 132,800 Disposed
Feb. 5, 2014 NKTR Stock Option Common Stock (225,000) $12.43 Feb. 4, 2022 225,000 Acquired
Feb. 5, 2014 NKTR Stock Option Common Stock (225,000) $12.43 Feb. 4, 2022 225,000 Acquired
Feb. 6, 2013 NKTR Stock Option Common Stock (225,000) $8.80 Feb. 5, 2021 225,000 Acquired
Feb. 6, 2013 NKTR Stock Option Common Stock (225,000) $8.80 Feb. 5, 2021 225,000 Acquired
Feb. 8, 2012 NKTR Stock Option Common Stock (200,000) $7.21 Feb. 7, 2020 200,000 Acquired
Feb. 8, 2012 NKTR Stock Option Common Stock (200,000) $7.21 Feb. 7, 2020 200,000 Acquired
Feb. 8, 2011 NKTR Stock Option Common Stock (300,000) $10.69 Feb. 8, 2019 300,000 Acquired
Feb. 1, 2010 NKTR Stock Option Common Stock (500,000) $11.34 Feb. 1, 2018 500,000 Acquired
Feb. 23, 2009 NKTR Employee Stock Option [F1] Common Stock (525,000) $4.65 Feb. 23, 2017 525,000 Acquired
Feb. 25, 2008 NKTR Employee Stock Option Common Stock (400,000) $6.46 Feb. 25, 2016 400,000 Acquired
Dec. 21, 2007 NKTR Employee Stock Option Common Stock (700,000) $6.98 Dec. 21, 2015 700,000 Acquired
Jan. 15, 2007 NKTR Stock Option (Right to Buy) Common Stock (600,000) $14.52 Jan. 15, 2015 600,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Jan. 16, 2007 NKTR Stock Option (Right to Buy)→ Common Stock (600,000) 600,000 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

NKTR

CEO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $1,106,282 — $942,081 $2,986,535 $1,106,282 — $115,774 $6,256,954
2022 $1,084,590 — $4,032,225 $5,409,410 $650,754 — $98,821 $11,275,830
2021 $1,053,000 — — — $1,000,350 — $81,980 —

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.