Insider · CIK 0001227886

CHESS ROBERT

Reports to the SEC for 4 companies · SAN FRANCISCO, CA

sec.gov

Transactions

Companies

Filings

CIK

0001227886

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-09-23	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Director	AAward	+4,000 sh	—	—	4,000
2026-09-23	NKTRNEKTAR THERAPEUTICSA Award	Director	AAward	+2,000 sh	—	—	19,019
2026-08-07	TWSTTwist Bioscience CorpS Sale	Director	SSale	−18.4K sh	$110.89	−$2.04M	21,084
2026-08-07	TWSTTwist Bioscience Corp · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−18.4K sh	—	—	0
2026-08-07	TWSTTwist Bioscience CorpM Exercise/Conversion	Director	MExercise/Conversion	+18.4K sh	$11.89	+$219K	39,501
2026-03-17	TWSTTwist Bioscience CorpM Exercise/Conversion	Director	MExercise/Conversion	+10K sh	$11.89	+$119K	31,084
2026-03-17	TWSTTwist Bioscience CorpS Sale	Director	SSale	−10K sh	$47.00	−$470K	21,084
2026-03-17	TWSTTwist Bioscience Corp · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−10K sh	—	—	18,417
2026-02-13	TWSTTwist Bioscience CorpS Sale	Director	SSale	−2,184 sh	$48.26	−$105K	21,084
2026-02-05	TWSTTwist Bioscience CorpA Award	Director	AAward	+5,095 sh	—	—	23,268
2025-09-30	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Director	AAward	+8,000 sh	—	—	8,000
2025-02-07	TWSTTwist Bioscience CorpS Sale	Director	SSale	−2,940 sh	$53.13	−$156K	18,173
2025-02-05	TWSTTwist Bioscience CorpA Award	Director	AAward	+4,472 sh	—	—	21,113
2025-01-07	TWSTTwist Bioscience CorpS Sale	Director	SSale	−5,000 sh	$50.00	−$250K	16,641
2024-12-05	TWSTTwist Bioscience CorpS Sale	Director	SSale	−709 sh	$52.45	−$37.2K	21,641
2024-12-05	TWSTTwist Bioscience CorpS Sale	Director	SSale	−2,795 sh	$51.70	−$145K	22,350
2024-12-05	TWSTTwist Bioscience CorpM Exercise/Conversion	Director	MExercise/Conversion	+3,504 sh	$8.82	+$30.9K	25,145
2024-12-05	TWSTTwist Bioscience Corp · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,504 sh	—	—	0
2024-11-11	TWSTTwist Bioscience CorpM Exercise/Conversion	Director	MExercise/Conversion	+3,600 sh	$8.82	+$31.8K	25,241
2024-11-11	TWSTTwist Bioscience CorpS Sale	Director	SSale	−2,324 sh	$46.99	−$109K	22,917
2024-11-11	TWSTTwist Bioscience Corp · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,600 sh	—	—	3,504
2024-11-11	TWSTTwist Bioscience CorpS Sale	Director	SSale	−1,276 sh	$47.76	−$60.9K	21,641
2024-09-18	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Director	AAward	+120K sh	—	—	120,000
2024-06-14	NKTRNEKTAR THERAPEUTICSS Sale	Director	SSale	−19.5K sh	$1.20	−$23.4K	255,273
2024-02-08	TWSTTwist Bioscience CorpS Sale	Director	SSale	−4,110 sh	$34.98	−$144K	64,169
2024-02-06	TWSTTwist Bioscience CorpA Award	Director	AAward	+5,815 sh	—	—	68,279
2023-09-19	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Director	AAward	+85K sh	—	—	85,000
2023-02-07	TWSTTwist Bioscience CorpA Award	Director	AAward	+8,212 sh	—	—	62,464
2022-09-22	NKTRNEKTAR THERAPEUTICSS Sale	Director	SSale	−10.2K sh	$0.67	−$6,834	274,773
2022-09-22	NKTRNEKTAR THERAPEUTICSS Sale	Director	SSale	−5,100 sh	$3.19	−$16.3K	228,179
2022-09-16	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Director	AAward	+20.4K sh	—	—	20,400
2022-09-16	NKTRNEKTAR THERAPEUTICSA Award	Director	AAward	+10.2K sh	—	—	233,279
2022-02-08	TWSTTwist Bioscience CorpA Award	Director	AAward	+3,491 sh	—	—	54,252
2022-02-04	TWSTTwist Bioscience CorpS Sale	Director	SSale	−253 sh	$58.88	−$14.9K	50,761
2021-11-01	TWSTTwist Bioscience CorpS Sale	Director	SSale	−4,000 sh	$120.15	−$481K	51,014
2021-10-21	TWSTTwist Bioscience CorpS Sale	Director	SSale	−3,700 sh	$120.15	−$445K	55,014
2021-10-19	TWSTTwist Bioscience CorpS Sale	Director	SSale	−300 sh	$120.00	−$36K	58,714
2021-09-22	NKTRNEKTAR THERAPEUTICS · Stock OptionA Award	Director	AAward	+20.4K sh	—	—	20,400
2021-09-22	NKTRNEKTAR THERAPEUTICSS Sale	Director	SSale	−4,600 sh	$17.94	−$82.5K	279,873
2021-09-22	NKTRNEKTAR THERAPEUTICSA Award	Director	AAward	+10.2K sh	—	—	284,473
2021-09-10	TWSTTwist Bioscience CorpS Sale	Director	SSale	−4,000 sh	$120.23	−$481K	59,014
2021-09-09	NKTRNEKTAR THERAPEUTICS · Common StockM Exercise/Conversion	Director	MExercise/Conversion	−10.3K sh	—	—	0
2021-09-09	NKTRNEKTAR THERAPEUTICSS Sale	Director	SSale	−10.3K sh	$16.02	−$165K	274,273
2021-09-09	NKTRNEKTAR THERAPEUTICSM Exercise/Conversion	Director	MExercise/Conversion	+10.3K sh	$13.80	+$142K	284,552
2021-09-08	NKTRNEKTAR THERAPEUTICS · Common StockM Exercise/Conversion	Director	MExercise/Conversion	−8,000 sh	—	—	10,279
2021-09-08	NKTRNEKTAR THERAPEUTICSS Sale	Director	SSale	−8,000 sh	$16.00	−$128K	274,273
2021-09-08	NKTRNEKTAR THERAPEUTICSM Exercise/Conversion	Director	MExercise/Conversion	+8,000 sh	$13.80	+$110K	282,273
2021-08-24	NKTRNEKTAR THERAPEUTICSG Gift	Director	GGift	+2,100 sh	—	—	2,100
2021-08-24	NKTRNEKTAR THERAPEUTICSG Gift	Director	GGift	+2,100 sh	—	—	2,100
2021-08-24	NKTRNEKTAR THERAPEUTICSG Gift	Director	GGift	+2,100 sh	—	—	2,100

Recent filings

Accepted (ET)
Sep 254
CHESS ROBERT0001193125-26-403101
SEC(opens sec.gov)
Aug 114
CHESS ROBERT0001214659-26-009894
SEC(opens sec.gov)
Mar 194
CHESS ROBERT0001214659-26-003483
SEC(opens sec.gov)
Feb 184
CHESS ROBERT0001214659-26-002125
SEC(opens sec.gov)
Feb 94
CHESS ROBERT0001214659-26-001342
SEC(opens sec.gov)
Oct 14
CHESS ROBERT0001193125-25-227235
SEC(opens sec.gov)
Feb 114
CHESS ROBERT0001214659-25-002410
SEC(opens sec.gov)
Feb 74
CHESS ROBERT0001214659-25-002229
SEC(opens sec.gov)
Jan 175
CHESS ROBERT0000950170-25-006887
SEC(opens sec.gov)
Jan 104
CHESS ROBERT0001214659-25-000445
SEC(opens sec.gov)
Dec 304
CHESS ROBERT0001214659-24-021151
SEC(opens sec.gov)
Nov 134
CHESS ROBERT0000950170-24-126641
SEC(opens sec.gov)

Companies

Address

C/O NEKTAR THERAPEUTICS 455 MISSION BAY BLVD SOUTH

SAN FRANCISCO, CA, 94158