Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionTower Bridge Advisors
Latest Disclosed Ownership15,175 shares
Latest Disclosed Value $ 5,339,324
Tower Bridge Advisors reports 4.23% increase in ownership of AMGN / Amgen Inc.

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 15,175 shares of Amgen Inc. (MX:AMGN) valued at $5,339,324 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 14,559 shares of Amgen Inc.. This represents a change in shares of 4.23% 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)
2026-05-12 2026-03-31 13F Amgen Common 031162100 15,175 616 4.23 5,339 12.05 0.3744
2026-02-13 2025-12-31 13F AMGEN COMMON 031162100 14,559 -223 -1.51 4,765 14.24 0.4813
2025-11-12 2025-09-30 13F AMGEN COMMON 031162100 14,782 -2 -0.01 4,171 1.07 0.4166
2025-08-11 2025-06-30 13F AMGEN COMMON 031162100 14,784 875 6.29 4,128 -4.75 0.4437
2025-05-08 2025-03-31 13F AMGEN COMMON 031162100 13,909 430 3.19 4,333 23.34 0.4842
2025-02-05 2024-12-31 13F AMGEN COMMON 031162100 13,479 280 2.12 3,513 -17.38 0.3741
2024-11-06 2024-09-30 13F AMGEN COMMON 031162100 13,199 203 1.56 4,253 4.73 0.4413
2024-07-24 2024-06-30 13F AMGEN COMMON 031162100 12,996 -2,364 -15.39 4,061 -7.03 0.4513
2024-04-29 2024-03-31 13F AMGEN COMMON 031162100 15,360 223 1.47 4,367 0.18 0.4445
2024-02-14 2023-12-31 13F AMGEN COMMON 031162100 15,137 -81 -0.53 4,360 6.60 0.3750
2023-11-01 2023-09-30 13F AMGEN COMMON 031162100 15,218 147 0.98 4,090 22.21 0.3786
2023-07-20 2023-06-30 13F AMGEN COM 031162100 15,071 -2,440 -13.93 3,346 -20.95 0.3067
2023-04-26 2023-03-31 13F AMGEN COMMON 031162100 17,511 1,150 7.03 4,233 -1.49 0.3466
2023-01-27 2022-12-31 13F AMGEN COMMON 031162100 16,361 -150 -0.91 4,297 15.48 0.3569
2022-11-14 2022-09-30 13F AMGEN COMMON 031162100 16,511 -167 -1.00 3,722 -8.28 0.3307
2022-07-21 2022-06-30 13F AMGEN COMMON 031162100 16,678 -110 -0.66 4,058 -0.05 0.3309
2022-05-05 2022-03-31 13F AMGEN COMMON 031162100 16,788 150 0.90 4,060 8.44 0.2714
2022-02-09 2021-12-31 13F AMGEN COMMON 031162100 16,638 -1,075 -6.07 3,743 -0.61 0.2298
2021-10-28 2021-09-30 13F AMGEN COMMON 031162100 17,713 155 0.88 3,767 -11.99 0.2513
2021-08-10 2021-06-30 13F AMGEN COMMON 031162100 17,558 1,663 10.46 4,280 8.22 0.2853
2021-05-12 2021-03-31 13F AMGEN COMMON 031162100 15,895 300 1.92 3,955 10.29 0.2977
2021-02-11 2020-12-31 13F AMGEN COMMON 031162100 15,595 8,669 125.17 3,586 103.69 0.2920
2020-11-13 2020-09-30 13F AMGEN COMMON 031162100 6,926 0 0.00 1,760 7.78 0.1798
2020-07-22 2020-06-30 13F AMGEN COMMON 031162100 6,926 -53 -0.76 1,634 15.49 0.1832
2020-04-27 2020-03-31 13F AMGEN COMMON 031162100 6,979 0 0.00 1,415 -15.93 0.1857
2020-02-05 2019-12-31 13F AMGEN COMMON 031162100 6,979 0 0.00 1,682 9.01 0.1777
2019-11-12 2019-09-30 13F AMGEN COMMON 031162100 6,979 53 0.77 1,543 20.92 0.1690
2019-08-06 2019-06-30 13F AMGEN COMMON 031162100 6,926 -100 -1.42 1,276 -4.35 0.1428
2019-04-30 2019-03-31 13F AMGEN COMMON 031162100 7,026 -533 -7.05 1,335 -9.31 0.1549
2019-02-07 2018-12-31 13F AMGEN COMMON 031162100 7,559 -201 -2.59 1,472 -8.52 0.1896
2018-10-23 2018-09-30 13F AMGEN COMMON 031162100 7,760 -332 -4.10 1,609 7.70 0.1680
2018-08-09 2018-06-30 13F AMGEN COMMON 031162100 8,092 0 0.00 1,494 8.27 0.1666
2018-05-02 2018-03-31 13F AMGEN COMMON 031162100 8,092 -498 -5.80 1,380 -7.64 0.1530
2018-01-30 2017-12-31 13F AMGEN COMMON 031162100 8,590 71 0.83 1,494 -5.98 0.1602
2017-11-06 2017-09-30 13F AMGEN COMMON 031162100 8,519 -820 -8.78 1,588 -1.24 0.1805
2017-07-26 2017-06-30 13F AMGEN COMMON 031162100 9,339 -6,300 -40.28 1,608 -37.31 0.1844
2017-05-02 2017-03-31 13F AMGEN COMMON 031162100 15,639 -775 -4.72 2,566 6.92 0.2996
2017-01-31 2016-12-31 13F AMGEN COMMON 031162100 16,414 0 0.00 2,400 -12.38 0.2909
2016-10-27 2016-09-30 13F AMGEN COMMON 031162100 16,414 -75 -0.45 2,738 9.17 0.3334
2016-08-12 2016-06-30 13F AMGEN COMMON 031162100 16,489 0 0.00 2,509 1.46 0.3125
2016-05-12 2016-03-31 13F AMGEN COMMON 031162100 16,489 1,605 10.78 2,472 2.32 0.3088
2016-02-02 2015-12-31 13F AMGEN COMMON 031162100 14,884 -166 -1.10 2,416 16.10 0.3148
2015-11-13 2015-09-30 13F/A-1 AMGEN COMMON 031162100 15,050 0 0.00 2,082 -9.91 0.2865
2015-11-12 2015-09-30 13F AMGEN COMMON 031162100 15,050 2,310
2015-08-13 2015-06-30 13F AMGEN COMMON 031162100 15,050 -400 -2.59 2,310 -6.44 0.2923
2015-05-14 2015-03-31 13F AMGEN COMMON 031162100 15,450 -1,010 -6.14 2,470 -5.80 0.3129
2015-02-19 2014-12-31 13F AMGEN COMMON 031162100 16,460 0 0.00 2,622 13.41 0.3224
2014-11-12 2014-09-30 13F AMGEN COMMON 031162100 16,460 0 0.00 2,312 18.63 0.2916
2014-08-26 2014-06-30 13F AMGEN COMMON 031162100 16,460 -465 -2.75 1,948 -6.66 0.2403
2014-05-08 2014-03-31 13F AMGEN COMMON 031162100 16,925 295 1.77 2,088 10.02 0.2682
2014-02-10 2013-12-31 13F AMGEN COMMON 031162100 16,630 -1,020 -5.78 1,897 -3.95 0.2490
2013-11-05 2013-09-30 13F AMGEN COMMON 031162100 17,650 32 0.18 1,975 13.64 0.2834
2013-07-24 2013-06-30 13F AMGEN COMMON 031162100 17,618 17,618 1,738 0.2576
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.