Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionMairs & Power Inc
Latest Disclosed Ownership4,964 shares
Latest Disclosed Value $ 1,746,583
Mairs & Power Inc reports 10.14% decrease in ownership of AMGN / Amgen Inc.

On May 13, 2026 - Mairs & Power Inc filed a 13F-HR form disclosing ownership of 4,964 shares of Amgen Inc. (MX:AMGN) valued at $1,746,583 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,524 shares of Amgen Inc.. This represents a change in shares of -10.14% 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)
2026-05-13 2026-03-31 13F AMGEN COM 031162100 4,964 -560 -10.14 1,747 -3.43 0.0178
2026-02-17 2025-12-31 13F AMGEN COM 031162100 5,524 -143 -2.52 1,808 13.07 0.0174
2025-11-14 2025-09-30 13F AMGEN COM 031162100 5,667 -171 -2.93 1,599 -1.90 0.0150
2025-08-14 2025-06-30 13F AMGEN COM 031162100 5,838 877 17.68 1,630 5.50 0.0161
2025-05-15 2025-03-31 13F AMGEN COM 031162100 4,961 -646 -11.52 1,546 5.75 0.0161
2025-02-14 2024-12-31 13F AMGEN COM 031162100 5,607 -341 -5.73 1,461 -23.75 0.0141
2024-11-14 2024-09-30 13F AMGEN COM 031162100 5,948 -2 -0.03 1,917 3.07 0.0180
2024-08-14 2024-06-30 13F AMGEN COM 031162100 5,950 -1,335 -18.33 1,859 -10.24 0.0180
2024-05-15 2024-03-31 13F AMGEN COM 031162100 7,285 -180 -2.41 2,071 -3.67 0.0201
2024-02-14 2023-12-31 13F AMGEN COM 031162100 7,465 -10 -0.13 2,150 7.07 0.0227
2023-11-14 2023-09-30 13F AMGEN COM 031162100 7,475 -162 -2.12 2,009 18.47 0.0236
2023-08-14 2023-06-30 13F AMGEN COM 031162100 7,637 -1,117 -12.76 1,696 -19.90 0.0184
2023-05-15 2023-03-31 13F AMGEN COM 031162100 8,754 -145 -1.63 2,116 -9.46 0.0244
2023-02-14 2022-12-31 13F AMGEN COM 031162100 8,899 -36 -0.40 2,337 16.04 0.0281
2022-11-14 2022-09-30 13F AMGEN COM 031162100 8,935 -58 -0.64 2,014 -7.95 0.0254
2022-08-15 2022-06-30 13F AMGEN COM 031162100 8,993 301 3.46 2,188 4.09 0.0262
2022-05-16 2022-03-31 13F AMGEN COM 031162100 8,692 125 1.46 2,102 9.08 0.0212
2022-02-14 2021-12-31 13F AMGEN COM 031162100 8,567 -63 -0.73 1,927 5.01 0.0178
2021-11-15 2021-09-30 13F AMGEN COM 031162100 8,630 250 2.98 1,835 -10.18 0.0184
2021-08-16 2021-06-30 13F AMGEN COM 031162100 8,380 -75 -0.89 2,043 -2.90 0.0202
2021-05-14 2021-03-31 13F AMGEN COM 031162100 8,455 -35 -0.41 2,104 7.79 0.0221
2021-02-16 2020-12-31 13F AMGEN COM 031162100 8,490 35 0.41 1,952 -9.17 0.0217
2020-11-16 2020-09-30 13F AMGEN COM 031162100 8,455 75 0.89 2,149 8.70 0.0268
2020-08-14 2020-06-30 13F AMGEN COM 031162100 8,380 0 0.00 1,977 16.36 0.0258
2020-05-15 2020-03-31 13F AMGEN COM 031162100 8,380 0 0.00 1,699 -15.89 0.0248
2020-02-14 2019-12-31 13F Amgen COM 031162100 8,380 -400 -4.56 2,020 18.89 0.0229
2019-11-14 2019-09-30 13F Amgen COM 031162100 8,780 0 0.00 1,699 5.01 0.0205
2019-08-14 2019-06-30 13F Amgen COM 031162100 8,780 -300 -3.30 1,618 -6.20 0.0194
2019-05-15 2019-03-31 13F Amgen COM 031162100 9,080 -243 -2.61 1,725 -4.96 0.0209
2019-02-14 2018-12-31 13F Amgen COM 031162100 9,323 -250 -2.61 1,815 -8.52 0.0245
2018-11-14 2018-09-30 13F Amgen COM 031162100 9,573 -646 -6.32 1,984 5.20 0.0231
2018-08-14 2018-06-30 13F Amgen COM 031162100 10,219 271 2.72 1,886 11.20 0.0234
2018-05-15 2018-03-31 13F Amgen COM 031162100 9,948 1,985 24.93 1,696 22.45 0.0209
2018-02-14 2017-12-31 13F Amgen COM 031162100 7,963 -166 -2.04 1,385 -8.64 0.0161
2017-11-14 2017-09-30 13F Amgen COM 031162100 8,129 -555 -6.39 1,516 1.34 0.0182
2017-08-14 2017-06-30 13F Amgen COM 031162100 8,684 -161 -1.82 1,496 3.10 0.0181
2017-05-15 2017-03-31 13F Amgen COM 031162100 8,845 -1,071 -10.80 1,451 0.07 0.0178
2017-02-14 2016-12-31 13F Amgen COM 031162100 9,916 0 0.00 1,450 -12.33 0.0186
2016-11-14 2016-09-30 13F Amgen COM 031162100 9,916 0 0.00 1,654 9.61 0.0218
2016-08-15 2016-06-30 13F Amgen COM 031162100 9,916 0 0.00 1,509 1.48 0.0204
2016-05-16 2016-03-31 13F Amgen COM 031162100 9,916 -1,175 -10.59 1,487 -17.39 0.0211
2016-02-16 2015-12-31 13F Amgen COM 031162100 11,091 -75 -0.67 1,800 16.58 0.0270
2015-11-16 2015-09-30 13F Amgen COM 031162100 11,166 275 2.53 1,544 -7.66 0.0241
2015-08-14 2015-06-30 13F Amgen COM 031162100 10,891 -50 -0.46 1,672 -4.40 0.0237
2015-05-15 2015-03-31 13F Amgen COM 031162100 10,941 0 0.00 1,749 0.34 0.0241
2015-02-17 2014-12-31 13F Amgen COM 031162100 10,941 0 0.00 1,743 13.40 0.0242
2014-11-14 2014-09-30 13F Amgen COM 031162100 10,941 -50 -0.45 1,537 18.14 0.0224
2014-08-14 2014-06-30 13F Amgen COM 031162100 10,991 211 1.96 1,301 -2.18 0.0184
2014-05-15 2014-03-31 13F Amgen COM 031162100 10,780 0 0.00 1,330 8.13 0.0197
2014-02-14 2013-12-31 13F Amgen COM 031162100 10,780 -400 -3.58 1,230 -1.68 0.0189
2013-11-14 2013-09-30 13F Amgen COM 031162100 11,180 -325 -2.82 1,251 10.22 0.0216
2013-08-14 2013-06-30 13F Amgen COM 031162100 11,505 11,505 1,135 0.0217
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.