Insider · CIK 0001743927

Liawatidewi Yakob

Reports to the SEC for 1 company · RANCHO CUCAMONGA, CA

sec.gov

Transactions

Companies

Filings

CIK

0001743927

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-03-15	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,033 sh	$18.18	−$18.8K	121,892
2026-03-10	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,870 sh	$18.91	−$35.4K	122,925
2026-03-09	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director, EVP CORP ADMIN CENTER	AAward	+35.5K sh	—	—	124,795
2026-03-09	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award	Director, EVP CORP ADMIN CENTER	AAward	+73.1K sh	—	—	73,126
2026-03-06	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,144 sh	$19.34	−$22.1K	89,345
2026-03-04	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−965 sh	$19.96	−$19.3K	90,489
2025-03-17	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,731 sh	$27.69	−$47.9K	90,909
2025-03-15	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,031 sh	$26.66	−$27.5K	92,640
2025-03-10	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director, EVP CORP ADMIN CENTER	AAward	+20.8K sh	—	—	93,671
2025-03-10	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award	Director, EVP CORP ADMIN CENTER	AAward	+44.3K sh	—	—	44,253
2025-03-06	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,141 sh	$28.32	−$32.3K	72,834
2025-03-04	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−963 sh	$27.62	−$26.6K	73,975
2024-11-06	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+5,214 sh	$13.03	+$67.9K	80,152
2024-11-06	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−5,214 sh	$52.05	−$271K	74,938
2024-11-06	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−5,214 sh	—	—	10,962
2024-06-04	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−272 sh	$42.22	−$11.5K	74,938
2024-03-17	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,726 sh	$43.05	−$74.3K	74,778
2024-03-16	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,671 sh	$43.05	−$71.9K	76,504
2024-03-15	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,027 sh	$43.05	−$44.2K	78,175
2024-03-06	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,221 sh	$46.31	−$56.5K	79,202
2024-03-04	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director, EVP CORP ADMIN CENTER	AAward	+10.8K sh	—	—	80,423
2024-03-04	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award	Director, EVP CORP ADMIN CENTER	AAward	+22.7K sh	—	—	22,655
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+3,319 sh	$16.96	+$56.3K	72,988
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+5,497 sh	$20.23	+$111K	78,485
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+20K sh	$13.03	+$261K	98,485
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−28.8K sh	$53.13	−$1.53M	69,669
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−3,319 sh	—	—	0
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−5,497 sh	—	—	0
2023-08-28	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−20K sh	—	—	16,176
2023-06-04	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−378 sh	$46.70	−$17.7K	69,669
2023-04-13	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+11.5K sh	$20.23	+$233K	80,709
2023-04-13	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−5,000 sh	$41.00	−$205K	75,709
2023-04-13	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−6,494 sh	$42.00	−$273K	69,215
2023-04-13	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−11.5K sh	—	—	5,497
2023-04-10	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+5,000 sh	$20.23	+$101K	74,215
2023-04-10	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−5,000 sh	$40.00	−$200K	69,215
2023-04-10	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−5,000 sh	—	—	16,991
2023-03-17	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,673 sh	$36.29	−$60.7K	69,215
2023-03-16	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,620 sh	$37.60	−$60.9K	70,888
2023-03-15	AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment	Director, EVP CORP ADMIN CENTER	FTax Payment	−1,851 sh	$36.84	−$68.2K	72,508
2023-03-06	AMPHAmphastar Pharmaceuticals, Inc.A Award	Director, EVP CORP ADMIN CENTER	AAward	+12.8K sh	—	—	74,359
2023-03-06	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award	Director, EVP CORP ADMIN CENTER	AAward	+26.9K sh	—	—	26,873
2022-08-09	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+3,055 sh	$19.79	+$60.5K	64,662
2022-08-09	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−3,055 sh	$39.00	−$119K	61,607
2022-08-09	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−3,055 sh	—	—	0
2022-08-08	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+5,000 sh	$19.79	+$99K	66,607
2022-08-08	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−5,000 sh	$38.00	−$190K	61,607
2022-08-08	AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	−5,000 sh	—	—	3,055
2022-07-15	AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion	Director, EVP CORP ADMIN CENTER	MExercise/Conversion	+10.8K sh	$19.79	+$214K	72,444
2022-07-15	AMPHAmphastar Pharmaceuticals, Inc.S Sale	Director, EVP CORP ADMIN CENTER	SSale	−3,478 sh	$35.94	−$125K	68,966

Recent filings

Accepted (ET)
Mar 174
Liawatidewi Yakob0001743927-26-000010
SEC(opens sec.gov)
Mar 114
Liawatidewi Yakob0001743927-26-000008
SEC(opens sec.gov)
Mar 104
Liawatidewi Yakob0001743927-26-000006
SEC(opens sec.gov)
Mar 64
Liawatidewi Yakob0001743927-26-000003
SEC(opens sec.gov)
Mar 184
Liawatidewi Yakob0001415889-25-008500
SEC(opens sec.gov)
Mar 124
Liawatidewi Yakob0001415889-25-007798
SEC(opens sec.gov)
Mar 104
Liawatidewi Yakob0001415889-25-007503
SEC(opens sec.gov)
Mar 64
Liawatidewi Yakob0001415889-25-007198
SEC(opens sec.gov)
Nov 84
Liawatidewi Yakob0001415889-24-026480
SEC(opens sec.gov)
Jun 54
Liawatidewi Yakob0001415889-24-015637
SEC(opens sec.gov)
Mar 194
Liawatidewi Yakob0001415889-24-008604
SEC(opens sec.gov)
Mar 84
Liawatidewi Yakob0001415889-24-007362
SEC(opens sec.gov)

Companies

Amphastar Pharmaceuticals, Inc.Director, EVP CORP ADMIN CENTERAMPH

Address

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

RANCHO CUCAMONGA, CA, 91730