Amgen Inc.
GB ˙ BATS-CHIXE ˙ NL0000888691
SecurityGB:AMGD / Amgen Inc.
InstitutionEnterprise Financial Services Corp
Latest Disclosed Ownership1,169 shares
Latest Disclosed Value $ 411,312
Enterprise Financial Services Corp reports 1.48% increase in ownership of AMGD / Amgen Inc.

On May 5, 2026 - Enterprise Financial Services Corp filed a 13F-HR form disclosing ownership of 1,169 shares of Amgen Inc. (GB:AMGD) valued at $411,312 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 1,152 shares of Amgen Inc.. This represents a change in shares of 1.48% 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 1,169 17 1.48 411 9.02 0.1157
2026-01-14 2025-12-31 13F AMGEN COM 031162100 1,152 58 5.30 377 22.40 0.1914
2025-10-15 2025-09-30 13F AMGEN COM 031162100 1,094 -19 -1.71 309 -0.65 0.1591
2025-08-12 2025-06-30 13F AMGEN COM 031162100 1,113 53 5.00 311 -6.06 0.1658
2025-05-14 2025-03-31 13F AMGEN COM 031162100 1,060 -15 -1.40 330 17.86 0.1953
2025-02-07 2024-12-31 13F AMGEN COM 031162100 1,075 -32 -2.89 280 -21.35 0.1559
2024-11-12 2024-09-30 13F AMGEN COM 031162100 1,107 -59 -5.06 357 -2.20 0.2079
2024-08-13 2024-06-30 13F AMGEN COM 031162100 1,166 17 1.48 364 11.66 0.2243
2024-05-14 2024-03-31 13F AMGEN COM 031162100 1,149 -437 -27.55 327 -28.51 0.1966
2024-02-09 2023-12-31 13F AMGEN COM 031162100 1,586 -18 -1.12 457 5.80 0.2783
2023-10-31 2023-09-30 13F AMGEN COM 031162100 1,604 41 2.62 431 24.21 0.2979
2023-08-14 2023-06-30 13F AMGEN COM 031162100 1,563 -79 -4.81 347 -12.37 0.2207
2023-05-15 2023-03-31 13F AMGEN COM 031162100 1,642 -23 -1.38 397 -9.38 0.2593
2023-02-14 2022-12-31 13F AMGEN COM 031162100 1,665 -1,012 -37.80 437 -27.53 0.3020
2022-11-14 2022-09-30 13F AMGEN COM 031162100 2,677 43 1.63 603 -5.93 0.4495
2022-08-09 2022-06-30 13F AMGEN COM 031162100 2,634 1,098 71.48 641 72.78 0.1249
2022-05-16 2022-03-31 13F AMGEN COM 031162100 1,536 106 7.41 371 15.22 0.0609
2022-02-14 2021-12-31 13F AMGEN COM 031162100 1,430 -679 -32.20 322 -28.29 0.0494
2021-11-15 2021-09-30 13F AMGEN COM 031162100 2,109 1,317 166.29 449 132.64 0.0581
2021-08-16 2021-06-30 13F AMGEN COMMON STOCK 031162100 792 -128 -13.91 193 -15.72 0.0309
2021-05-13 2021-03-31 13F AMGEN COMMON STOCK 031162100 920 19 2.11 229 10.63 0.0408
2021-02-12 2020-12-31 13F AMGEN COMMON STOCK 031162100 901 9 1.01 207 -8.81 0.0393
2020-11-13 2020-09-30 13F AMGEN COMMON STOCK 031162100 892 0 0.00 227 7.58 0.0469
2020-08-04 2020-06-30 13F AMGEN COMMON STOCK 031162100 892 41 4.82 211 22.67 0.0455
2020-05-15 2020-03-31 13F AMGEN COMMON STOCK 031162100 851 33 4.03 172 -12.69 0.0434
2020-01-28 2019-12-31 13F AMGEN COMMON STOCK 031162100 818 -8 -0.97 197 23.90 0.0429
2019-10-31 2019-09-30 13F AMGEN COMMON STOCK 031162100 826 89 12.08 159 17.78 0.0362
2019-07-30 2019-06-30 13F AMGEN COMMON STOCK 031162100 737 -20 -2.64 135 -6.25 0.0293
2019-04-26 2019-03-31 13F AMGEN COMMON STOCK 031162100 757 0 0.00 144 -2.04 0.0314
2019-01-25 2018-12-31 13F AMGEN COMMON STOCK 031162100 757 -34 -4.30 147 -10.37 0.0927
2018-10-26 2018-09-30 13F AMGEN COMMON STOCK 031162100 791 0 0.00 164 12.33 0.0860
2018-07-27 2018-06-30 13F AMGEN COMMON STOCK 031162100 791 -15 -1.86 146 6.57 0.0740
2018-04-27 2018-03-31 13F AMGEN COMMON STOCK 031162100 806 64 8.63 137 6.20 0.0705
2018-01-26 2017-12-31 13F AMGEN COMMON STOCK 031162100 742 -106 -12.50 129 -18.35 0.0627
2017-10-27 2017-09-30 13F AMGEN COMMON STOCK 031162100 848 100 13.37 158 22.48 0.0782
2017-07-28 2017-06-30 13F AMGEN COMMON STOCK 031162100 748 114 17.98 129 24.04 0.0644
2017-04-27 2017-03-31 13F AMGEN COMMON STOCK 031162100 634 -10 -1.55 104 10.64 0.0513
2017-01-26 2016-12-31 13F AMGEN COMMON STOCK 031162100 644 133 26.03 94 10.59 0.0473
2016-10-28 2016-09-30 13F AMGEN COMMON STOCK 031162100 511 41 8.72 85 18.06 0.0481
2016-07-29 2016-06-30 13F AMGEN COMMON STOCK 031162100 470 16 3.52 72 5.88 0.0424
2016-04-29 2016-03-31 13F AMGEN COMMON STOCK 031162100 454 -33 -6.78 68 -13.92 0.0410
2016-01-29 2015-12-31 13F AMGEN COMMON STOCK 031162100 487 19 4.06 79 21.54 0.0469
2015-10-29 2015-09-30 13F AMGEN COMMON STOCK 031162100 468 41 9.60 65 -1.52 0.0416
2015-07-27 2015-06-30 13F AMGEN COMMON STOCK 031162100 427 -257 -37.57 66 -40.00 0.0390
2015-04-29 2015-03-31 13F AMGEN COMMON STOCK 031162100 684 9 1.33 110 1.85 0.0646
2015-01-23 2014-12-31 13F AMGEN COMMON STOCK 031162100 675 -27 -3.85 108 9.09 0.0654
2014-10-24 2014-09-30 13F AMGEN COMMON STOCK 031162100 702 -79 -10.12 99 6.45 0.0627
2014-07-24 2014-06-30 13F AMGEN COMMON STOCK 031162100 781 -4,014 -83.71 93 -84.26 0.0555
2014-04-24 2014-03-31 13F AMGEN COMMON STOCK 031162100 4,795 -463 -8.81 591 -1.50 0.3629
2014-01-30 2013-12-31 13F AMGEN COMMON STOCK 031162100 5,258 0 0.00 600 2.04 0.3479
2013-10-25 2013-09-30 13F AMGEN COMMON STOCK 031162100 5,258 619 13.34 588 28.38 0.3714
2013-07-25 2013-06-30 13F AMGEN COMMON STOCK 031162100 4,639 4,639 458 0.3142
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.