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AMPH AMPHASTAR PHARMACEUTICALS IN

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COM (common), issuer CIK 1297184

203 managers (211 13F filers) reported a position in AMPH shares at 2026-06-30, 28,318,237 shares in all. 30 filers opened a position and 32 filers sold out during the quarter.

Managers
203
13F filers
211
New
30
Added
63
Reduced
76
Sold out
32
Shares held by filers
28,318,237

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Hughes Financial Services, LLC1$20<0.01%new13F-HRTimeline
Capital Advisors, Ltd. LLC24$00%-14613F-HRTimelineValue filed as zero, left out of ratios.
Evolution Advisers, Inc.4$00%new13F-HRTimelineValue filed as zero, left out of ratios.