Insider · CIK 0001047579

PRINS RICHARD K

Reports to the SEC for 4 companies · RANCHO CUCAMONGA, CA

sec.gov

Transactions

Companies

Filings

CIK

0001047579

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-08-11	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director	SSale	−7,973 sh	$20.30	−$162K	29,625
2026-06-01	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)A Award	Director	AAward	+17.4K sh	—	—	17,365
2026-06-01	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director	AAward	+8,143 sh	—	—	37,598
2026-04-01	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−70K sh	—	—	70,000
2026-04-01	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−100K sh	—	—	0
2026-04-01	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+70K sh	—	—	1,541,251
2026-04-01	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+100K sh	—	—	1,471,251
2026-01-19	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−100K sh	—	—	50,000
2026-01-19	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+100K sh	—	—	1,371,251
2025-11-25	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−4,179 sh	—	—	0
2025-11-25	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+4,179 sh	$16.69	+$69.7K	39,362
2025-11-25	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director	SSale	−4,179 sh	$27.10	−$113K	35,183
2025-10-17	IGCIGC Pharma, Inc. · OptionsA Award	Director	AAward	+750K sh	—	—	750,000
2025-06-02	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)A Award	Director	AAward	+11.4K sh	—	—	11,402
2025-06-02	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director	AAward	+5,122 sh	—	—	35,183
2025-03-31	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+100K sh	—	—	1,201,251
2025-03-31	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+70K sh	—	—	1,271,251
2025-03-31	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−58.3K sh	—	—	0
2025-03-31	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−70K sh	—	—	140,000
2025-03-31	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−100K sh	—	—	100,000
2025-03-31	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+58.3K sh	—	—	1,101,251
2024-12-09	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−10K sh	—	—	0
2024-12-09	AMPHAmphastar Pharmaceuticals, Inc.G Gift	Director	GGift	−410 sh	—	—	30,061
2024-12-09	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director	SSale	−10K sh	$43.77	−$438K	30,471
2024-12-09	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+10K sh	$19.52	+$195K	40,471
2024-11-12	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+2,500 sh	$16.69	+$41.7K	36,471
2024-11-12	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director	SSale	−5,000 sh	$48.80	−$244K	31,471
2024-11-12	AMPHAmphastar Pharmaceuticals, Inc.G Gift	Director	GGift	−1,000 sh	—	—	30,471
2024-11-12	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−2,500 sh	—	—	4,179
2024-08-19	AMPHAmphastar Pharmaceuticals, Inc.G Gift	Director	GGift	−1,500 sh	—	—	29,455
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+3,915 sh	$20.03	+$78.4K	37,886
2024-08-12	IGCIGC Pharma, Inc.G Gift	Director	GGift	−200K sh	—	—	1,042,917
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−7,182 sh	—	—	10,000
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−6,004 sh	—	—	10,000
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,915 sh	—	—	10,000
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director	SSale	−17.1K sh	$43.07	−$737K	33,971
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+7,182 sh	$19.52	+$140K	51,072
2024-08-12	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+6,004 sh	$20.08	+$121K	43,890
2024-06-03	AMPHAmphastar Pharmaceuticals, Inc. · Stock Option (right to buy)A Award	Director	AAward	+6,864 sh	—	—	6,864
2024-06-03	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director	AAward	+3,076 sh	—	—	33,971
2024-03-13	IGCIGC Pharma, Inc. · Restricted Stock UnitsA Award	Director	AAward	+175K sh	—	—	175,000
2024-03-13	IGCIGC Pharma, Inc. · Restricted Stock UnitsA Award	Director	AAward	+210K sh	—	—	210,000
2024-03-13	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−71.3K sh	—	—	213,750
2024-03-13	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−100K sh	—	—	200,000
2024-03-13	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−58.3K sh	—	—	58,333
2024-03-13	IGCIGC Pharma, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−100K sh	—	—	100,000
2024-03-13	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+28.5K sh	—	—	1,242,917
2024-03-13	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+42.8K sh	—	—	1,214,417
2024-03-13	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+100K sh	—	—	1,171,667
2024-03-13	IGCIGC Pharma, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+58.3K sh	—	—	1,071,667

Recent filings

Accepted (ET)
Aug 124
PRINS RICHARD K0001047579-26-000005
SEC(opens sec.gov)
Jun 34
PRINS RICHARD K0001047579-26-000003
SEC(opens sec.gov)
Apr 64
PRINS RICHARD K0001185185-26-001286
SEC(opens sec.gov)
Jan 204
PRINS RICHARD K0001185185-26-000218
SEC(opens sec.gov)
Nov 254
PRINS RICHARD K0001047579-25-000006
SEC(opens sec.gov)
Oct 224
PRINS RICHARD K0001185185-25-001520
SEC(opens sec.gov)
Jun 44
PRINS RICHARD K0001415889-25-015660
SEC(opens sec.gov)
May 155
PRINS RICHARD K0001185185-25-000496
SEC(opens sec.gov)

Companies

Address

C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET

RANCHO CUCAMONGA, CA, 91730