Insider · CIK 0001296381

Chu Steven

Reports to the SEC for 3 companies · FREMONT, CA

sec.gov

Transactions

Companies

Filings

CIK

0001296381

Forms 4 and 5

Insider transactions

23 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-06-12	AMPXAmprius Technologies, Inc.A Award	Director	AAward	+10.4K sh	—	—	137,762
2026-03-12	AMPXAmprius Technologies, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−69.4K sh	$0.62	−$43K	0
2026-03-12	AMPXAmprius Technologies, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−86.1K sh	$2.61	−$225K	184,108
2026-03-12	AMPXAmprius Technologies, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+86.1K sh	$2.61	+$225K	213,482
2026-03-12	AMPXAmprius Technologies, Inc.S Sale	Director	SSale	−50K sh	$18.21	−$911K	132,904
2026-03-12	AMPXAmprius Technologies, Inc.S Sale	Director	SSale	−100K sh	$18.65	−$1.86M	182,904
2026-03-12	AMPXAmprius Technologies, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+69.4K sh	$0.62	+$43K	282,904
2026-03-12	AMPXAmprius Technologies, Inc.S Sale	Director	SSale	−5,565 sh	$18.53	−$103K	127,339
2026-03-10	AMPXAmprius Technologies, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−104K sh	$0.62	−$64.6K	69,422
2026-03-10	AMPXAmprius Technologies, Inc.S Sale	Director	SSale	−167K sh	$17.92	−$2.99M	127,339
2026-03-10	AMPXAmprius Technologies, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+104K sh	$0.62	+$64.6K	293,971
2025-06-13	AMPXAmprius Technologies, Inc.A Award	Director	AAward	+44.4K sh	—	—	189,839
2024-10-23	AMPXAmprius Technologies, Inc. · Stock Option (right to buy)A Award	Director	AAward	+174K sh	—	—	173,554
2024-10-23	AMPXAmprius Technologies, Inc. · Stock Option (right to buy)A Award	Director	AAward	+174K sh	—	—	173,554
2024-06-07	AMPXAmprius Technologies, Inc.A Award	Director	AAward	+125K sh	—	—	145,395
2023-06-09	AMPXAmprius Technologies, Inc.A Award	Director	AAward	+17.9K sh	—	—	20,395
2022-10-19	Zymergen Inc.D Disposition to Issuer	Director	DDisposition to Issuer	−50K sh	—	—	0
2022-10-19	Zymergen Inc.Stock OptionsD Disposition to Issuer	Director	DDisposition to Issuer	−33.3K sh	—	—	0
2022-10-19	Zymergen Inc.Stock OptionsD Disposition to Issuer	Director	DDisposition to Issuer	−132K sh	—	—	0
2022-09-14	AMPXAmprius Technologies, Inc. · Stock Option (right to buy)A Award	Director	AAward	+270K sh	—	—	270,251
2022-06-02	Zymergen Inc.A Award	Director	AAward	+50K sh	—	—	50,000
2008-06-20	NVDANVIDIA CORP · Director Stock Option (Right to Buy)A Award	Director	AAward	+30K sh	—	—	30,000
2007-06-22	NVDANVIDIA CORP · Director Stock Option (Right to Buy)A Award	Director	AAward	+24K sh	—	—	24,000

Recent filings

Accepted (ET)
Jun 164
Chu Steven0001296381-26-000005
SEC(opens sec.gov)
Mar 124
Chu Steven0001296381-26-000003
SEC(opens sec.gov)
Jun 174
Chu Steven0001628280-25-031974
SEC(opens sec.gov)
Oct 254
Chu Steven0001628280-24-043851
SEC(opens sec.gov)
Jun 74
Chu Steven0001628280-24-027372
SEC(opens sec.gov)
Jun 124
Chu Steven0001628280-23-021895
SEC(opens sec.gov)
Oct 194
Chu Steven0001645842-22-000147
SEC(opens sec.gov)
Sep 164
Chu Steven0000899243-22-031394
SEC(opens sec.gov)

Companies

Address

C/O AMPRIUS TECHNOLOGIES, INC., 1180 PAGE AVENUE

FREMONT, CA, 94538