Rong Zhou

Insider Reports History

Location
Rancho Cucamonga, CA
Signature
/s/ Eva Wen, by power of attorney
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Rong Zhou:

Stock Role Class Num Shares Value Price $ Report Date Ownership
Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Common Srock 120K $5.17M $43.05 16 Mar 2024 Direct
Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Common Srock 137K $3.81M $27.69 17 Mar 2025 Direct
Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Common Stock 5K $138K $27.69 15 Mar 2025 Indirect
Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER Employee Stock Option (right to buy) 52.4K 10 Mar 2025 Direct

Insider Reports Filed by Rong Zhou

Symbol Company Period Transactions Value $ Form Type Role Filing Time
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2025 2 -$87K 4 SENIOR EVP, PRODUCTION CENTER 18 Mar 2025, 19:43
AMPH Amphastar Pharmaceuticals, Inc. 10 Mar 2025 2 $0 4 SENIOR EVP, PRODUCTION CENTER 12 Mar 2025, 16:53
AMPH Amphastar Pharmaceuticals, Inc. 06 Mar 2025 1 -$38.3K 4 SENIOR EVP, PRODUCTION CENTER 10 Mar 2025, 18:10
AMPH Amphastar Pharmaceuticals, Inc. 04 Mar 2025 1 -$31K 4 SENIOR EVP, PRODUCTION CENTER 06 Mar 2025, 16:22
AMPH Amphastar Pharmaceuticals, Inc. 12 Dec 2024 6 -$503K 4 SENIOR EVP, PRODUCTION CENTER 16 Dec 2024, 17:22
AMPH Amphastar Pharmaceuticals, Inc. 12 Nov 2024 3 -$234K 4 SENIOR EVP, PRODUCTION CENTER 13 Nov 2024, 20:26
AMPH Amphastar Pharmaceuticals, Inc. 13 Sep 2024 3 -$99.9K 4 SENIOR EVP, PRODUCTION CENTER 17 Sep 2024, 16:11
AMPH Amphastar Pharmaceuticals, Inc. 26 Aug 2024 3 -$134K 4 SENIOR EVP, PRODUCTION CENTER 27 Aug 2024, 21:33
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2024 3 -$238K 4 SENIOR EVP, PRODUCTION CENTER 19 Mar 2024, 17:15
AMPH Amphastar Pharmaceuticals, Inc. 06 Mar 2024 1 -$64.4K 4 SENIOR EVP, PRODUCTION CENTER 08 Mar 2024, 16:47
AMPH Amphastar Pharmaceuticals, Inc. 04 Mar 2024 2 $0 4 SENIOR EVP, PRODUCTION CENTER 06 Mar 2024, 17:51
AMPH Amphastar Pharmaceuticals, Inc. 01 Dec 2023 6 -$343K 4 Senior EVP, Production Center 05 Dec 2023, 18:25
AMPH Amphastar Pharmaceuticals, Inc. 20 Jun 2023 2 $109K 4 EVP, Production Center 21 Jun 2023, 17:05
AMPH Amphastar Pharmaceuticals, Inc. 15 Jun 2023 7 $24.7K 4 EVP, Production Center 20 Jun 2023, 16:05
AMPH Amphastar Pharmaceuticals, Inc. 13 Jun 2023 3 -$169K 4 EVP, Production Center 14 Jun 2023, 17:36
AMPH Amphastar Pharmaceuticals, Inc. 18 May 2023 3 -$298K 4 EVP, Production Center 19 May 2023, 18:36
AMPH Amphastar Pharmaceuticals, Inc. 16 Mar 2023 2 -$155K 4 EVP, Production Center 20 Mar 2023, 20:04
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2023 1 -$75.8K 4 EVP, Production Center 17 Mar 2023, 19:04
AMPH Amphastar Pharmaceuticals, Inc. 06 Mar 2023 2 $0 4 EVP, Production Center 08 Mar 2023, 15:06
AMPH Amphastar Pharmaceuticals, Inc. 16 Mar 2022 2 -$162K 4 EVP, Production Center 18 Mar 2022, 19:01
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2022 3 -$57.4K 4 EVP, Production Center 17 Mar 2022, 17:07
AMPH Amphastar Pharmaceuticals, Inc. 25 Feb 2022 3 -$305K 4 EVP, Production Center 01 Mar 2022, 15:07
AMPH Amphastar Pharmaceuticals, Inc. 08 Feb 2022 3 -$111K 4 EVP, Production Center 09 Feb 2022, 20:07
AMPH Amphastar Pharmaceuticals, Inc. 10 Jan 2022 4 -$378K 4 EVP, Production Center 11 Jan 2022, 19:28
AMPH Amphastar Pharmaceuticals, Inc. 11 Nov 2021 3 -$87.4K 4 EVP, Production Center 12 Nov 2021, 18:44
AMPH Amphastar Pharmaceuticals, Inc. 02 Aug 2021 3 -$131K 4 EVP, Production Center 04 Aug 2021, 16:05
AMPH Amphastar Pharmaceuticals, Inc. 26 Jul 2021 3 -$62.3K 4 EVP, Production Center 27 Jul 2021, 18:46
AMPH Amphastar Pharmaceuticals, Inc. 20 Jul 2021 3 -$52.3K 4 EVP, Production Center 22 Jul 2021, 16:13
AMPH Amphastar Pharmaceuticals, Inc. 08 Jun 2021 4 -$134K 4 EVP, Production Center 10 Jun 2021, 16:45
AMPH Amphastar Pharmaceuticals, Inc. 13 May 2020 6 -$189K 4 EVP, Production Center 17 May 2021, 19:38