Amphastar Pharmaceuticals, Inc.

Robeco Institutional Asset Management B.V. AMPH

Report date

3/31/2026

Quarter

2026 Q1

Filed

4/21/2026

Shares

66,407

Value ($000)

1,301

Weight

0.0%

2022 Q1 - 2026 Q1 (4 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2026 Q1	4/21/2026	1,301	0.0%	66,407	3/31/2026
2022 Q3	12/1/2022	1,026	0.0%	36,497	9/30/2022
2022 Q2	12/1/2022	1,270	0.0%	36,497	6/30/2022
2022 Q1	12/1/2022	1,205	0.0%	33,561	3/31/2022