Amgen Inc.
GB ˙ BATS-CHIXE ˙ NL0000888691
SecurityGB:AMGD / Amgen Inc.
InstitutionGrandfield & Dodd, Llc
Latest Disclosed Ownership7,691 shares
Latest Disclosed Value $ 2,706,078
Grandfield & Dodd, Llc reports 5.93% decrease in ownership of AMGD / Amgen Inc.

On May 7, 2026 - Grandfield & Dodd, Llc filed a 13F-HR form disclosing ownership of 7,691 shares of Amgen Inc. (GB:AMGD) valued at $2,706,078 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 8,176 shares of Amgen Inc.. This represents a change in shares of -5.93% 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)
2026-05-07 2026-03-31 13F AMGEN COM 031162100 7,691 -485 -5.93 2,706 1.12 0.1528
2026-02-10 2025-12-31 13F AMGEN COM 031162100 8,176 0 0.00 2,676 15.99 0.1516
2025-10-30 2025-09-30 13F AMGEN COM 031162100 8,176 0 0.00 2,307 1.10 0.1309
2025-08-08 2025-06-30 13F AMGEN COM 031162100 8,176 158 1.97 2,283 -8.65 0.1337
2025-05-02 2025-03-31 13F AMGEN COM 031162100 8,018 0 0.00 2,498 19.58 0.1549
2025-02-06 2024-12-31 13F AMGEN COM 031162100 8,018 -275 -3.32 2,090 -21.82 0.1288
2024-11-08 2024-09-30 13F AMGEN COM 031162100 8,293 -525 -5.95 2,672 -3.01 0.1583
2024-08-09 2024-06-30 13F AMGEN COM 031162100 8,818 0 0.00 2,755 9.89 0.1744
2024-05-06 2024-03-31 13F AMGEN COM 031162100 8,818 5 0.06 2,507 -1.22 0.1582
2024-01-31 2023-12-31 13F AMGEN COM 031162100 8,813 -480 -5.17 2,538 1.64 0.1754
2023-10-26 2023-09-30 13F AMGEN COM 031162100 9,293 -100 -1.06 2,498 19.76 0.1835
2023-08-08 2023-06-30 13F AMGEN COM 031162100 9,393 -996 -9.59 2,085 -16.97 0.1458
2023-04-28 2023-03-31 13F AMGEN COM 031162100 10,389 770 8.00 2,512 -0.59 0.1755
2023-01-20 2022-12-31 13F AMGEN COM 031162100 9,619 -59 -0.61 2,526 15.87 0.1848
2022-11-04 2022-09-30 13F AMGEN COM 031162100 9,678 -701 -6.75 2,180 -13.83 0.1780
2022-08-01 2022-06-30 13F AMGEN COM 031162100 10,379 -158 -1.50 2,530 -0.78 0.1993
2022-04-19 2022-03-31 13F AMGEN COM 031162100 10,537 -450 -4.10 2,550 3.24 0.1731
2022-02-08 2021-12-31 13F AMGEN COM 031162100 10,987 -1,056 -8.77 2,470 -3.52 0.1589
2021-10-28 2021-09-30 13F AMGEN COM 031162100 12,043 -1,169 -8.85 2,560 -20.50 0.1787
2021-07-28 2021-06-30 13F AMGEN COM 031162100 13,212 -341 -2.52 3,220 -4.45 0.2228
2021-04-22 2021-03-31 13F AMGEN COM 031162100 13,553 -172 -1.25 3,370 6.65 0.2520
2021-01-29 2020-12-31 13F AMGEN COM 031162100 13,725 -885 -6.06 3,160 -14.82 0.2479
2020-11-03 2020-09-30 13F AMGEN COM 031162100 14,610 -718 -4.68 3,710 2.49 0.3342
2020-07-24 2020-06-30 13F AMGEN COM 031162100 15,328 -4,282 -21.84 3,620 -8.95 0.3502
2020-05-14 2020-03-31 13F AMGEN COM 031162100 19,610 -10,070 -33.93 3,976 -44.43 0.4688
2020-02-07 2019-12-31 13F AMGEN COM 031162100 29,680 -452 -1.50 7,155 22.71 0.6518
2019-10-30 2019-09-30 13F AMGEN COM 031162100 30,132 -627 -2.04 5,831 2.88 0.5737
2019-07-29 2019-06-30 13F AMGEN COM 031162100 30,759 -1,789 -5.50 5,668 -8.33 0.5603
2019-04-26 2019-03-31 13F AMGEN COM 031162100 32,548 -690 -2.08 6,183 -4.44 0.6439
2019-02-12 2018-12-31 13F AMGEN COM 031162100 33,238 -1,044 -3.05 6,470 -8.95 0.7657
2018-11-02 2018-09-30 13F AMGEN COM 031162100 34,282 -1,492 -4.17 7,106 7.60 0.7323
2018-07-27 2018-06-30 13F AMGEN COM 031162100 35,774 -1,983 -5.25 6,604 2.59 0.7256
2018-05-04 2018-03-31 13F/A-1 AMGEN COM 031162100 37,757 -1,162 -2.99 6,437 -4.89 0.7180
2018-05-04 2018-03-31 13F AMGEN COM 031162100 37,757 -1,162 6,437
2018-02-05 2017-12-31 13F AMGEN COM 031162100 38,919 -2,277 -5.53 6,768 -11.89 0.7225
2017-11-03 2017-09-30 13F AMGEN COM 031162100 41,196 -7,821 -15.96 7,681 -9.01 0.8623
2017-07-27 2017-06-30 13F AMGEN COM 031162100 49,017 -8,358 -14.57 8,442 -10.33 0.9975
2017-04-28 2017-03-31 13F AMGEN COM 031162100 57,375 -4,411 -7.14 9,414 4.21 1.1627
2017-02-02 2016-12-31 13F AMGEN COM 031162100 61,786 -2,260 -3.53 9,034 -15.44 1.1708
2016-10-24 2016-09-30 13F AMGEN COM 031162100 64,046 -3,885 -5.72 10,684 3.37 1.4036
2016-07-28 2016-06-30 13F AMGEN COM 031162100 67,931 -7,250 -9.64 10,336 -8.30 1.4469
2016-05-06 2016-03-31 13F AMGEN COM 031162100 75,181 -7,288 -8.84 11,272 -15.80 1.6313
2016-02-03 2015-12-31 13F AMGEN COM 031162100 82,469 -2,018 -2.39 13,387 14.56 2.0349
2015-11-02 2015-09-30 13F AMGEN COM 031162100 84,487 -1,450 -1.69 11,686 -11.42 1.9599
2015-08-03 2015-06-30 13F AMGEN COM 031162100 85,937 -8,885 -9.37 13,193 -12.96 2.0182
2015-05-15 2015-03-31 13F AMGEN COM 031162100 94,822 -250 -0.26 15,157 0.09 2.3171
2015-02-05 2014-12-31 13F AMGEN COM 031162100 95,072 -7,670 -7.47 15,144 4.94 2.3408
2014-11-10 2014-09-30 13F AMGEN COM 031162100 102,742 970 0.95 14,431 19.79 2.2675
2014-08-14 2014-06-30 13F AMGEN COM 031162100 101,772 125 0.12 12,047 -3.91 1.8175
2014-05-06 2014-03-31 13F AMGEN COM 031162100 101,647 -1,385 -1.34 12,537 6.66 1.9680
2014-02-06 2013-12-31 13F AMGEN COM 031162100 103,032 -1,450 -1.39 11,754 0.51 1.9097
2013-11-04 2013-09-30 13F AMGEN COM 031162100 104,482 -1,175 -1.11 11,694 12.18 2.0853
2013-08-01 2013-06-30 13F AMGEN COM 031162100 105,657 105,657 10,424 1.9744
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.