Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionFactory Mutual Insurance Co
Latest Disclosed Ownership64,800 shares
Latest Disclosed Value $ 22,799,880
Factory Mutual Insurance Co reports 4.01% increase in ownership of AMGN / Amgen Inc.

On May 5, 2026 - Factory Mutual Insurance Co filed a 13F-HR form disclosing ownership of 64,800 shares of Amgen Inc. (CH:AMGN) valued at $22,799,880 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 62,300 shares of Amgen Inc.. This represents a change in shares of 4.01% 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)
2026-05-05 2026-03-31 13F AMGEN COM 031162100 64,800 2,500 4.01 22,800 11.81 0.2565
2026-01-23 2025-12-31 13F AMGEN COM 031162100 62,300 -2,500 -3.86 20,391 11.51 0.2067
2025-11-10 2025-09-30 13F AMGEN COM 031162100 64,800 0 0.00 18,287 1.07 0.1781
2025-08-07 2025-06-30 13F AMGEN COM 031162100 64,800 0 0.00 18,093 -10.38 0.1978
2025-04-17 2025-03-31 13F AMGEN COM 031162100 64,800 0 0.00 20,188 19.53 0.2342
2025-01-24 2024-12-31 13F AMGEN COM 031162100 64,800 -31,000 -32.36 16,889 -45.28 0.1826
2024-10-10 2024-09-30 13F AMGEN COM 031162100 95,800 -1,600 -1.64 30,868 1.43 0.3193
2024-07-23 2024-06-30 13F AMGEN COM 031162100 97,400 14,900 18.06 30,433 29.74 0.3467
2024-04-12 2024-03-31 13F AMGEN COM 031162100 82,500 -2,900 -3.40 23,456 -4.63 0.2694
2024-01-23 2023-12-31 13F AMGEN COM 031162100 85,400 31,900 59.63 24,597 71.07 0.3055
2023-11-07 2023-09-30 13F AMGEN COM 031162100 53,500 53,500 14,379 0.2006
2018-10-10 2018-09-30 13F AMGEN COM 031162100 0 -87,250 -100.00 0 -100.00
2018-07-19 2018-06-30 13F AMGEN COM 031162100 87,250 0 0.00 16,106 8.28 0.1728
2018-04-05 2018-03-31 13F AMGEN COM 031162100 87,250 0 0.00 14,874 -1.97 0.1629
2018-01-16 2017-12-31 13F AMGEN COM 031162100 87,250 0 0.00 15,173 -6.74 0.1587
2017-10-11 2017-09-30 13F AMGEN COM 031162100 87,250 1,650 1.93 16,269 10.35 0.1784
2017-07-10 2017-06-30 13F AMGEN COM 031162100 85,600 0 0.00 14,743 4.98 0.1705
2017-04-21 2017-03-31 13F AMGEN COM 031162100 85,600 -40,000 -31.85 14,044 -25.56 0.1663
2017-01-19 2016-12-31 13F AMGEN COM 031162100 125,600 -10,200 -7.51 18,866 -16.72 0.2239
2016-10-26 2016-09-30 13F AMGEN COM 031162100 135,800 -28,800 -17.50 22,653 -9.55 0.2801
2016-07-12 2016-06-30 13F AMGEN COM 031162100 164,600 -14,000 -7.84 25,044 -6.47 0.3299
2016-04-27 2016-03-31 13F AMGEN COM 031162100 178,600 -4,000 -2.19 26,777 -9.66 0.3465
2016-01-14 2015-12-31 13F AMGEN COM 031162100 182,600 0 0.00 29,641 17.36 0.3987
2015-10-14 2015-09-30 13F AMGEN COM 031162100 182,600 0 0.00 25,257 -9.90 0.3455
2015-07-21 2015-06-30 13F AMGEN COM 031162100 182,600 0 0.00 28,033 -3.96 0.3661
2015-04-13 2015-03-31 13F AMGEN COM 031162100 182,600 -7,500 -3.95 29,188 -3.61 0.3845
2015-01-12 2014-12-31 13F AMGEN COM 031162100 190,100 28,000 17.27 30,281 32.99 0.4081
2014-11-04 2014-09-30 13F AMGEN COM 031162100 162,100 57,100 54.38 22,769 83.19 0.3149
2014-08-12 2014-06-30 13F AMGEN COM 031162100 105,000 0 0.00 12,429 -4.03 0.1699
2014-05-15 2014-03-31 13F AMGEN COM 031162100 105,000 0 0.00 12,951 8.12 0.1875
2014-02-04 2013-12-31 13F AMGEN COM 031162100 105,000 40,000 61.54 11,978 64.65 0.1762
2013-10-16 2013-09-30 13F AMGEN COM 031162100 65,000 65,000 7,275 0.1154
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.