Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionPerkins Coie Trust Co
Latest Disclosed Ownership395 shares
Latest Disclosed Value $ 194,150
Perkins Coie Trust Co reports 7.06% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 15, 2026 - Perkins Coie Trust Co filed a 13F-HR form disclosing ownership of 395 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $194,150 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 425 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -7.06% 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)
2026-04-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 395 -30 -7.06 194 -21.14 0.0373
2026-01-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 425 0 0.00 246 19.42 0.0459
2025-10-09 2025-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 425 0 0.00 206 19.77 0.0388
2025-07-10 2025-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 425 0 0.00 172 -18.48 0.0293
2025-04-11 2025-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 425 300 240.00 211 224.62 0.0480
2025-01-16 2024-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 125 -30 -19.35 65 -31.58 0.0143
2024-10-08 2024-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 155 0 0.00 96 11.76 0.0213
2024-07-15 2024-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 155 0 0.00 86 -5.56 0.0199
2024-04-12 2024-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 155 -31 -16.67 90 -8.16 0.0211
2024-01-09 2023-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 -31 -14.29 99 -10.09 0.0249
2023-10-11 2023-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 217 31 16.67 110 12.37 0.0310
2023-07-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 97 -9.35 0.0276
2023-04-13 2023-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 107 4.90 0.0321
2023-01-18 2022-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 102 8.51 0.0327
2022-10-07 2022-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 94 -6.93 0.0360
2022-07-08 2022-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 101 -8.18 0.0368
2022-04-15 2022-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 110 -11.29 0.0341
2022-01-13 2021-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 0 0.00 124 16.98 0.0364
2021-10-13 2021-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 186 -89 -32.36 106 -23.74 0.0332
2021-07-14 2021-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 275 0 0.00 139 10.32 0.0428
2021-04-13 2021-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 275 -51 -15.64 126 -17.11 0.0420
2021-01-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 326 0 0.00 152 5.56 0.0519
2020-10-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 326 -51 -13.53 144 5.11 0.0575
2020-07-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 377 0 0.00 137 28.04 0.0564
2020-04-10 2020-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 377 -118 -23.84 107 -33.54 0.0545
2020-01-09 2019-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 495 0 0.00 161 11.81 0.0660
2019-10-11 2019-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 495 0 0.00 144 -0.69 0.0638
2019-07-10 2019-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 495 0 0.00 145 7.41 0.0659
2019-04-08 2019-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 495 -7 -1.39 135 20.54 0.0628
2019-01-15 2018-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 502 0 0.00 112 -8.94 0.0586
2018-10-12 2018-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 502 -20 -3.83 123 13.89 0.0571
2018-07-17 2018-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 522 -10 -1.88 108 -1.82 0.0534
2018-04-16 2018-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 532 -36 -6.34 110 1.85 0.0546
2018-01-12 2017-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 568 -25 -4.22 108 -3.57 0.0539
2017-10-13 2017-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 593 0 0.00 112 8.74 0.0582
2017-07-10 2017-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 593 0 0.00 103 13.19 0.0554
2017-04-11 2017-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 593 0 0.00 91 8.33 0.0535
2017-01-10 2016-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 593 310 109.54 84 86.67 0.0510
2016-10-11 2016-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 45 7.14 0.0285
2016-07-08 2016-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 42 5.00 0.0277
2016-04-15 2016-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 40 0.00 0.0272
2016-01-12 2015-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 40 14.29 0.0300
2015-10-14 2015-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 35 -5.41 0.0282
2015-07-09 2015-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 37 -2.63 0.0279
2015-04-09 2015-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 38 8.57 0.0293
2015-01-07 2014-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 35 2.94 0.0279
2015-01-06 2014-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 34
2014-10-21 2014-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 34 3.03 0.0286
2014-07-18 2014-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 33 -2.94 0.0308
2014-04-14 2014-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 0 0.00 34 6.25 0.0328
2014-02-10 2013-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 283 283 32 0.0315
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.