Amgen Inc.
GB ˙ BATS-CHIXE ˙ NL0000888691
SecurityGB:AMGD / Amgen Inc.
InstitutionMayfair Advisory Group, LLC
Latest Disclosed Ownership995 shares
Latest Disclosed Value $ 350,091
Mayfair Advisory Group, LLC reports 3.02% decrease in ownership of AMGD / Amgen Inc.

On April 21, 2026 - Mayfair Advisory Group, LLC filed a 13F-HR form disclosing ownership of 995 shares of Amgen Inc. (GB:AMGD) valued at $350,091 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 1,026 shares of Amgen Inc.. This represents a change in shares of -3.02% 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)
2026-04-21 2026-03-31 13F AMGEN COM 031162100 995 -31 -3.02 350 4.17 0.1222
2026-01-21 2025-12-31 13F AMGEN COM 031162100 1,026 -69 -6.30 336 8.74 0.1306
2025-10-21 2025-09-30 13F AMGEN COM 031162100 1,095 -3 -0.27 309 -2.22 0.1325
2025-08-13 2025-06-30 13F AMGEN COM 031162100 1,098 275 33.41 316 23.44 0.1492
2025-04-18 2025-03-31 13F AMGEN COM 031162100 823 -19 -2.26 256 16.89 0.1479
2025-01-14 2024-12-31 13F AMGEN COM 031162100 842 -80 -8.68 219 -25.51 0.1292
2024-10-23 2024-09-30 13F AMGEN COM 031162100 922 0 0.00 295 -3.61 0.1859
2024-07-22 2024-06-30 13F AMGEN COM 031162100 922 6 0.66 305 17.31 0.2066
2024-04-18 2024-03-31 13F AMGEN COM 031162100 916 19 2.12 260 -2.26 0.1890
2024-01-19 2023-12-31 13F AMGEN COM 031162100 897 0 0.00 267 9.47 0.2272
2023-10-24 2023-09-30 13F AMGEN COM 031162100 897 897 243 0.2347
2023-07-24 2023-06-30 13F AMGEN COM 031162100 0 -897 -100.00 0 -100.00
2023-04-20 2023-03-31 13F AMGEN COM 031162100 897 -93 -9.39 224 -16.10 0.2432
2023-01-27 2022-12-31 13F AMGEN COM 031162100 990 -34 -3.32 267 13.14 0.3405
2022-11-08 2022-09-30 13F AMGEN COM 031162100 1,024 20 1.99 236 -4.84 0.3335
2022-08-09 2022-06-30 13F AMGEN COM 031162100 1,004 112 12.56 248 14.29 0.3266
2022-04-14 2022-03-31 13F AMGEN COM 031162100 892 0 0.00 217 7.96 0.2782
2022-01-19 2021-12-31 13F AMGEN COM 031162100 892 892 201 0.2664
2021-01-27 2020-12-31 13F AMGEN COM 031162100 0 -852 -100.00 0 -100.00
2020-10-26 2020-09-30 13F AMGEN COM 031162100 852 852 217 0.5596
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.