Polaris Capital Management, LLC
Position in AMPH — Amphastar Pharmaceuticals, Inc.
CIK 1316926
BOSTON, MA
Position in AMPH
as of Jun 30, 2026
· filed Jul 27, 2026
Position Value
$872,421
+$25,507 QoQ
Shares Held
43,232
0.0% QoQ
Ownership
0.102%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
#70
of 209 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in AMPH Over Time
Shares Held
Position Value (USD)
Position in Drug Manufacturers - Specialty & Generic
Healthcare · as of Jun 30, 2026Polaris Capital Management, LLC holds $79,265,107 across 5 Drug Manufacturers - Specialty & Generic names. AMPH ranks #5 (1.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LNTH |
Lantheus Holdings, Inc.
|
424,500 | $47,094,030 | |
| 2 | UTHR |
UNITED THERAPEUTICS Corp
|
53,450 | $28,960,813 | |
| 3 | ANIP |
Ani Pharmaceuticals Inc
|
15,600 | $1,291,368 | |
| 4 | SUPN |
Supernus Pharmaceuticals, Inc.
|
22,500 | $1,046,475 | |
| 5 | AMPH |
Amphastar Pharmaceuticals, Inc.
This page
|
43,232 | $872,421 |
All Filings in AMPH
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $872,421 | 43,232 | Shares | Sole | 2026-07-27 | |
| 2026-03-31 | $846,914 | 43,232 | Shares | Sole | 2026-04-27 | |
| 2025-12-31 | $951,546 | 35,532 | Shares | Sole | 2026-01-29 | |
| 2025-09-30 | $349,115 | 13,100 | Shares | Sole | 2025-10-27 | |
| 2025-06-30 | $805,896 | 35,100 | Shares | Sole | 2025-07-21 | |
| 2025-03-31 | $892,892 | 30,800 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $909,685 | 24,500 | Shares | Sole | 2025-01-29 | |
| No filing history on record for this holder in this stock. | ||||||