ZHOU RONG

PrivateCIK: 1645326
Location

RANCHO CUCAMONGA, CA

Senior insider sale

SENIOR EVP, PRODUCTION CENTER at AMPHASTAR PHARMACEUTICALS, INC. — senior position signals high conviction

$290.1K

13.19K shares

What this filing means

ZHOU RONG plans to sell 13.19K shares of AMPHASTAR PHARMACEUTICALS, INC. valued at approximately $290.1K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderZHOU RONGCIK 1645326
Officer· SENIOR EVP, PRODUCTION CENTER
Since Mar 2026
13.19K
Shares to sell
$290.1K
Approx. market value
13.19K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months6
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Option Exercise

Cash

9/1/2026
10K

ESPP

Cash

5/31/2023
690.00

ESPP

Cash

11/30/2022
146.00

ESPP

Cash

5/31/2022
981.00

ESPP

Cash

11/30/2021
360.00

ESPP

Cash

5/31/2021
1.01K
Total acquired13.19K
Planned & Completed Dispositions1
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NASDAQPlanned

Units to sell

13.19K

Market value

$290.1K

9/1/2026
Total

Units

13.19K

Value

$290.1K

ZHOU RONG — Planned Insider Sale (Form 144) | Finecho