Rong Zhou

AMPH

Rong Zhou serves as officer: SENIOR EVP, PRODUCTION CENTER at Amphastar Pharmaceuticals, Inc. (AMPH). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

30 trades

$6.39M

Net Position

Net Seller

$6.39M

Companies Traded

AMPH

Active Period

May 2020 – Sep 2026

30 total trades

Most Recent

Sell AMPH

Sep 3, 2026 · $75.3K

Rong Zhou's Insider Trading at Amphastar Pharmaceuticals, Inc. (AMPH)

Buys

0 · $0.00

Sells

30 · $6.39M

Total Shares Bought

Total Shares Sold

200,192

AMPH Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Sep 3, 2026	Sell	3,187	$23.63	$75.3K	169,203
Dec 17, 2025	Sell	9,787	$26.20	$256.4K	0
Mar 15, 2025	Sell	3,189	$27.30	$87.0K	0
Mar 6, 2025	Sell	1,354	$28.32	$38.3K	0
Mar 4, 2025	Sell	1,121	$27.62	$31.0K	0
Dec 12, 2024	Sell	15,000	$44.85	$672.8K	0
Nov 12, 2024	Sell	6,893	$48.88	$336.9K	0
Sep 13, 2024	Sell	3,000	$48.26	$144.8K	0
Aug 26, 2024	Sell	4,000	$48.35	$193.4K	0
Mar 15, 2024	Sell	5,535	$43.05	$238.3K	0
Mar 6, 2024	Sell	1,390	$46.31	$64.4K	0
Dec 1, 2023	Sell	7,830	$59.03	$462.2K	0
Jun 15, 2023	Sell	5,000	$51.79	$258.9K	0
Jun 13, 2023	Sell	5,000	$48.24	$241.2K	0
May 18, 2023	Sell	10,000	$44.21	$442.1K	0
Mar 16, 2023	Sell	4,184	$37.00	$154.8K	0
Mar 15, 2023	Sell	2,057	$36.84	$75.8K	0
Mar 16, 2022	Sell	4,730	$34.20	$161.8K	0
Mar 15, 2022	Sell	1,652	$34.74	$57.4K	0
Feb 25, 2022	Sell	13,246	$28.77	$381.1K	0
Feb 8, 2022	Sell	7,000	$26.77	$187.4K	0
Jan 10, 2022	Sell	20,928	$25.36	$530.7K	0
Nov 11, 2021	Sell	7,813	$21.67	$169.3K	0
Aug 2, 2021	Sell	9,123	$21.24	$193.7K	0
Jul 26, 2021	Sell	6,000	$20.87	$125.2K	0
Jul 20, 2021	Sell	5,187	$20.57	$106.7K	0
Jun 8, 2021	Sell	12,912	$19.43	$250.8K	0
Mar 16, 2021	Sell	3,303	$18.44	$60.9K	0
Mar 15, 2021	Sell	1,652	$19.15	$31.6K	0
May 13, 2020	Sell	18,119	$19.71	$357.2K	0

Related Insiders

PRINS RICHARD K

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AMPHSell · Aug 12, 2026

PETERS WILLIAM J

director, officer: CFO, EVP & TREASURER

AMPHSell · Aug 11, 2026

Floyd F. Petersen

Director

AMPHSell · Dec 11, 2025

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