Zhou Rong

Company

Date

Role

Action

Shares

Amount

Of holding

AMPH Amphastar Pharmaceuticals, Inc.

16 Sep 2026

SENIOR EVP, PRODUCTION CENTER

Sold at will

10,000

$239.40K

5.6%

AMPH Amphastar Pharmaceuticals, Inc.

2 Sep 2026

SENIOR EVP, PRODUCTION CENTER

Sold at will

3,187

$75.31K

1.8%

AMPH Amphastar Pharmaceuticals, Inc.

17 Dec 2025

SENIOR EVP, PRODUCTION CENTER

Sold at will

9,787

$256.38K

6.6%

AMPH Amphastar Pharmaceuticals, Inc.

13 Dec 2024

SENIOR EVP, PRODUCTION CENTER

Sold at will

8,000

$361.84K

6.3%

AMPH Amphastar Pharmaceuticals, Inc.

12 Dec 2024

SENIOR EVP, PRODUCTION CENTER

Sold at will

7,000

$310.98K

5.6%

AMPH Amphastar Pharmaceuticals, Inc.

12 Nov 2024

SENIOR EVP, PRODUCTION CENTER

Sold at will

6,893

$336.93K

5.5%

AMPH Amphastar Pharmaceuticals, Inc.

13 Sep 2024

SENIOR EVP, PRODUCTION CENTER

Sold at will

3,000

$144.78K

2.5%

AMPH Amphastar Pharmaceuticals, Inc.

26 Aug 2024

SENIOR EVP, PRODUCTION CENTER

Sold at will

4,000

$193.40K

3.3%

AMPH Amphastar Pharmaceuticals, Inc.

4 Dec 2023

Senior EVP, Production Center

Sold at will

3,514

$209.36K

3.0%

AMPH Amphastar Pharmaceuticals, Inc.

1 Dec 2023

Senior EVP, Production Center

Sold at will

4,316

$252.83K

3.7%

AMPH Amphastar Pharmaceuticals, Inc.

15 Jun 2023

EVP, Production Center

Sold at will

5,000

$258.95K

4.9%

AMPH Amphastar Pharmaceuticals, Inc.

13 Jun 2023

EVP, Production Center

Sold at will

5,000

$241.20K

5.4%

AMPH Amphastar Pharmaceuticals, Inc.

18 May 2023

EVP, Production Center

Sold at will

10,000

$442.05K

10.2%

AMPH Amphastar Pharmaceuticals, Inc.

25 Feb 2022

EVP, Production Center

Sold, plan not stated

13,246

$381.09K

15.9%

AMPH Amphastar Pharmaceuticals, Inc.

8 Feb 2022

EVP, Production Center

Sold, plan not stated

7,000

$187.39K

8.4%

AMPH Amphastar Pharmaceuticals, Inc.

10 Jan 2022

EVP, Production Center

Sold, plan not stated

20,928

$530.68K

21.5%

AMPH Amphastar Pharmaceuticals, Inc.

11 Nov 2021

EVP, Production Center

Sold, plan not stated

7,813

$169.31K

8.6%

AMPH Amphastar Pharmaceuticals, Inc.

2 Aug 2021

EVP, Production Center

Sold, plan not stated

9,123

$193.73K

9.9%

AMPH Amphastar Pharmaceuticals, Inc.

26 Jul 2021

EVP, Production Center

Sold, plan not stated

6,000

$125.22K

6.5%

AMPH Amphastar Pharmaceuticals, Inc.

20 Jul 2021

EVP, Production Center

Sold, plan not stated

5,187

$106.70K

5.7%

AMPH Amphastar Pharmaceuticals, Inc.

9 Jun 2021

EVP, Production Center

Sold, plan not stated

4,732

$92.65K

5.2%

AMPH Amphastar Pharmaceuticals, Inc.

8 Jun 2021

EVP, Production Center

Sold, plan not stated

8,180

$158.18K

8.2%

AMPH Amphastar Pharmaceuticals, Inc.

14 May 2021

EVP, Production Center

Sold, plan not stated

17,419

$343.46K

16.2%

AMPH Amphastar Pharmaceuticals, Inc.

13 May 2021

EVP, Production Center

Sold, plan not stated

700

$13.71K

0.7%

AMPH Amphastar Pharmaceuticals, Inc.

4 Jun 2020

EVP, Production Center

Sold, plan not stated

9,806

$188.18K

11.0%

AMPH Amphastar Pharmaceuticals, Inc.

3 Jun 2020

EVP, Production Center

Sold, plan not stated

13,163

$247.68K

14.1%

AMPH Amphastar Pharmaceuticals, Inc.

6 May 2019

EVP, Production Center

Sold, plan not stated

9,600

$218.50K

14.4%

AMPH Amphastar Pharmaceuticals, Inc.

1 Mar 2019

EVP, Production Center

Sold, plan not stated

3,200

$80.00K

5.8%

AMPH Amphastar Pharmaceuticals, Inc.

5 Feb 2019

EVP, Production Center

Sold, plan not stated

4,289

$98.65K

7.6%

AMPH Amphastar Pharmaceuticals, Inc.

3 Dec 2018

EVP, Production Center

Sold, plan not stated

1,089

$23.96K

2.0%

AMPH Amphastar Pharmaceuticals, Inc.

9 Nov 2018

EVP, Production Center

Sold, plan not stated

1,089

$22.87K

2.0%

AMPH Amphastar Pharmaceuticals, Inc.

8 Nov 2018

EVP, Production Center

Sold, plan not stated

1,084

$21.68K

2.0%

AMPH Amphastar Pharmaceuticals, Inc.

5 Dec 2016

EVP, Production Center

Sold, plan not stated

61

$1.26K

0.2%

AMPH Amphastar Pharmaceuticals, Inc.

15 Jun 2016

EVP, Production Center

Sold, plan not stated

1,551

$24.58K

4.0%

AMPH Amphastar Pharmaceuticals, Inc.

16 Dec 2015

EVP, Production

Sold, plan not stated

772

$11.03K

2.9%

AMPH Amphastar Pharmaceuticals, Inc.

17 Jun 2015

EVP, Production

Sold, plan not stated

1,000

$16.48K

3.7%