Companies / Amphastar Pharmaceuticals, Inc.

Amphastar Pharmaceuticals, Inc.

Nasdaq: AMPHCIK 1297184RANCHO CUCAMONGA, CA

Financials ยท FY2025

Revenue$719.89M
Net income$98.09M
Total debt$619.71M
Cash$223.61M
Diluted EPS$2.03
Shares outstanding42.5M

Ownership

42.5M shares outstanding ยท as of Jul 31, 2026
11.5%Insiders
Ownership
Insiders11.48%4,881,812
Institutions78.07%33,209,649
Public float10.45%4,446,483

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 11

View all โ†’
Insider% of sharesShares
Zhang Jack Y.CEOCEO & CHIEF SCIENTIFIC OFFICER ยท Director ยท 10% owner
9.96%4,235,177
Peters William JCFO, EVP & TREASURER ยท Director
0.41%175,063
Zhou RongSENIOR EVP, PRODUCTION CENTER
0.40%171,554
Lee HowardDirector
0.37%159,350
Liawatidewi YakobFormerEVP CORP ADMIN CENTER ยท Director
0.29%121,892
Zasloff Michael aDirector
0.09%37,667
Prins Richard KDirector
0.09%37,598
Gerst Diane G.Director
0.07%31,899
Deflin GayleDirector
0.04%19,057
Gaugh David RussellDirector
0.03%14,447

Institutional holders 240

View all โ†’
HolderValue% of shares
BlackRock, Inc.$105.44M12.28%
Vanguard Group Inc$69.85M6.13%
Dimensional Fund Advisors LP$48.20M4.23%
State Street Corporation$33.14M3.86%
TD Asset Management Inc$30.19M3.62%
Boston Trust Walden Corp$29.12M2.56%
Fuller & Thaler Asset Management, Inc.$27.33M3.28%
Marshall Wace, LLP$20.09M2.41%
Geode Capital Management, LLC$19.14M2.30%
American Century Companies Inc$17.82M1.56%
InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ฮ”Position afterImpact
Mar 10, 2026Zhang Jack Y.
CEO
OtherCommon Stock$279.6K-15K
-0.49%
2,999,836
7.05% of shares
low
Mar 15, 2026Zhang Jack Y.
CEO
OtherCommon Stock$177.9K-10K
-0.33%
2,990,052
7.03% of shares
low
Mar 6, 2026Zhang Jack Y.
CEO
OtherCommon Stock$150.3K-8K
-0.27%
2,834,117
6.66% of shares
low
Mar 4, 2026Zhang Jack Y.
CEO
OtherCommon Stock$115.1K-6K
-0.20%
2,841,890
6.68% of shares
low
Mar 10, 2026Zhang Jack Y.
CEO
OtherCommon Stock$83.1K-4K
-0.35%
1,248,033
2.93% of shares
low
Mar 10, 2026Peters William J
Executive
OtherCommon Stock$62.3K-3K
-1.83%
177,036
0.42% of shares
low
Mar 6, 2026Zhang Jack Y.
CEO
OtherCommon Stock$59.5K-3K
-0.26%
1,179,966
2.77% of shares
low
Mar 15, 2026Zhang Jack Y.
CEO
OtherCommon Stock$52.9K-3K
-0.23%
1,245,125
2.93% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/Aโ€”0โ€”

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
AMPHโ€”โ€”03209R103โ€”