Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionMitchell Sinkler & Starr/pa
Latest Disclosed Ownership2,295 shares
Latest Disclosed Value $ 807,496
Mitchell Sinkler & Starr/pa ownership in AMGN / Amgen Inc.

On April 13, 2026 - Mitchell Sinkler & Starr/pa filed a 13F-HR form disclosing ownership of 2,295 shares of Amgen Inc. (CH:AMGN) valued at $807,496 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 2,295 shares of Amgen Inc.. This represents a change in shares of 0.00% during the quarter.

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)
2026-04-13 2026-03-31 13F AMGEN COM 031162100 2,295 0 0.00 807 7.46 0.3728
2026-02-11 2025-12-31 13F AMGEN COM 031162100 2,295 -40 -1.71 751 14.13 0.3394
2025-11-04 2025-09-30 13F AMGEN COM 031162100 2,335 0 0.00 659 1.08 0.2962
2025-07-25 2025-06-30 13F AMGEN COM 031162100 2,335 0 0.00 652 -10.45 0.3120
2025-05-07 2025-03-31 13F AMGEN COM 031162100 2,335 -1,750 -42.84 727 -31.67 0.2036
2025-02-12 2024-12-31 13F AMGEN COM 031162100 4,085 0 0.00 1,065 -19.15 0.2841
2024-11-13 2024-09-30 13F AMGEN COM 031162100 4,085 105 2.64 1,316 -0.08 0.3309
2024-08-07 2024-06-30 13F AMGEN COM 031162100 3,980 180 4.74 1,317 21.94 0.3381
2024-04-30 2024-03-31 13F AMGEN COM 031162100 3,800 895 30.81 1,080 29.19 0.2702
2024-02-12 2023-12-31 13F AMGEN COM 031162100 2,905 600 26.03 837 35.06 0.1522
2023-11-01 2023-09-30 13F AMGEN COM 031162100 2,305 70 3.13 619 24.80 0.1905
2023-07-18 2023-06-30 13F AMGEN COM 031162100 2,235 -70 -3.04 496 -10.95 0.1409
2023-05-15 2023-03-31 13F AMGEN COM 031162100 2,305 2,305 557 0.1647
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.