ROYCE & ASSOCIATES LP

Position in AMPH — Amphastar Pharmaceuticals, Inc.

CIK 906304 New York, NY

Position in AMPH

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$7,956,968

-$1,477,545 QoQ

Shares Held

406,175

+15.3% QoQ

Ownership

0.921%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2021

12 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

ROYCE & ASSOCIATES LP holds $70,326,489 across 14 Drug Manufacturers - Specialty & Generic names. AMPH ranks #5 (11.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SUPN	Supernus Pharmaceuticals, Inc.	229,939	$11,885,546
2	ELAN	Elanco Animal Health Inc	469,916	$11,245,089
3	PBH	Prestige Consumer Healthcare Inc.	157,126	$9,312,858
4	COLL	Collegium Pharmaceutical, Inc	272,786	$9,021,033
5	AMPH	Amphastar Pharmaceuticals, Inc. This page	406,175	$7,956,968
6	ESPR	Esperion Therapeutics, Inc.	2,626,995	$7,197,966
7	SIGA	Siga Technologies Inc	667,646	$3,571,906
8	TKNO	Alpha Teknova, Inc.	1,069,162	$3,089,878

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$7,956,968	406,175	+15.3%	Shares	Sole	2026-05-12
2025-12-31	$9,434,513	352,297	-3.8%	Shares	Sole	2026-02-09
2025-09-30	$9,762,481	366,322	+29.4%	Shares	Sole	2025-11-12
2025-06-30	$6,501,973	283,187	+14.3%	Shares	Sole	2025-08-11
2025-03-31	$7,185,403	247,858	+2684.3%	Shares	Sole	2025-05-06
2024-12-31	$330,531	8,902	-1.9%	Shares	Sole	2025-02-10
2024-09-30	$440,458	9,076	0.0%	Shares	Sole	2024-11-06
2024-06-30	$363,040	9,076	-59.3%	Shares	Sole	2024-08-13
2023-03-31	$836,812	22,315	+64.7%	Shares	Sole	2023-05-23
2022-06-30	$471,265	13,546	-35.2%	Shares	Sole	2022-08-04
2022-03-31	$750,310	20,900	+4.5%	Shares	Sole	2022-05-05
2021-12-31	$465,939	20,006	—	Shares	Sole	2022-02-07
No filing history on record for this holder in this stock.