Amphastar Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US03209R1032

SecurityAMPH / Amphastar Pharmaceuticals, Inc.
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership878 shares
Latest Disclosed Value $ 23,513
CIBC Private Wealth Group, LLC reports 21.78% increase in ownership of AMPH / Amphastar Pharmaceuticals, Inc.

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 878 shares of Amphastar Pharmaceuticals, Inc. (US:AMPH) valued at $23,513 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 721 shares of Amphastar Pharmaceuticals, Inc.. This represents a change in shares of 21.78% during the quarter. The current value of the position is $15,909 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-02-12 2025-12-31 13F AMPHASTAR PHARMACEUTICALS IN COM 03209R103 878 157 21.78 24 21.05
2025-11-24 2025-09-30 13F AMPHASTAR PHARMACEUTICALS IN COM 03209R103 721 0 0.00 19 18.75 0.0000
2025-08-12 2025-06-30 13F AMPHASTAR PHARMACEUTICALS IN COM 03209R103 721 -76 -9.54 17 -11.11 0.0000
2025-05-14 2025-03-31 13F AMPHASTAR PHARMACEUTICALS IN COM 03209R103 797 236 42.07 19 -10.00 0.0000
2025-02-12 2024-12-31 13F Amphastar Pharmaceuticals COM 03209R103 561 -16 -2.77 21 -28.57 0.0000
2024-11-13 2024-09-30 13F Amphastar Pharmaceuticals COM 03209R103 577 249 75.91 28 133.33 0.0001
2024-08-09 2024-06-30 13F Amphastar Pharmaceuticals COM 03209R103 328 29 9.70 12 0.00 0.0000
2024-05-10 2024-03-31 13F Amphastar Pharmaceuticals COM 03209R103 299 299 13 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.