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Boston Trust Walden Corp

Position in AMPH — Amphastar Pharmaceuticals, Inc.

CIK 1534866 BOSTON, MA

Position in AMPH

as of Mar 31, 2026 · filed Apr 24, 2026
Position Value
$18,508,415
-$10,608,567 QoQ
Shares Held
944,789
-13.1% QoQ
Ownership
2.22%
of shares outstanding
% of Portfolio
0.15%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority Sole 91% Shared 0% None 9%

Common Shares in AMPH Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Jun 30, 2026

Boston Trust Walden Corp holds $36,692,838 across 2 Drug Manufacturers - Specialty & Generic names.

# Ticker Company Shares Value (USD) Open

All Filings in AMPH

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $18,508,415 944,789
2025-12-31 $29,116,982 1,087,266
2025-09-30 $31,263,300 1,173,107
2025-06-30 $27,011,360 1,176,453
2025-03-31 $35,240,939 1,215,624
2024-12-31 $36,347,299 978,920
2024-09-30 $26,188,679 539,639