Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionGSB Wealth Management, LLC
Latest Disclosed Ownership942 shares
Latest Disclosed Value $ 463,195
GSB Wealth Management, LLC reports 0.32% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 20, 2026 - GSB Wealth Management, LLC filed a 13F-HR form disclosing ownership of 942 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $463,021 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 939 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 0.32% during the quarter. The current value of the position is $446,461 USD.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-20 2026-03-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 942 3 0.32 463 -14.89 0.1046
2026-02-05 2025-12-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 939 -4 -0.42 544 19.04 0.1231
2025-10-21 2025-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 943 -160 -14.51 458 2.24 0.1037
2025-07-15 2025-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,103 107 10.74 447 -9.70 0.1095
2025-04-18 2025-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 996 -23 -2.26 496 -6.60 0.1303
2025-01-21 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,019 -18 -1.74 530 -17.32 0.1370
2024-10-25 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,037 0 0.00 642 11.87 0.1642
2024-07-18 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,037 0 0.00 573 -4.82 0.1565
2024-05-02 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,037 -100 -8.80 603 -0.17 0.1696
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,137 0 0.00 604 4.87 0.1855
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,137 11 0.98 576 -2.04 0.1927
2023-08-08 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,126 0 0.00 588 -9.55 0.1911
2023-05-18 2023-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,126 -30 -2.60 649 2.04 0.2122
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,126 -30 649 0.2413
2023-02-16 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,156 -1,005 -46.51 637 -41.97 0.2272
2022-10-18 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,161 -81 -3.61 1,096 -10.02 0.3974
2022-07-20 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,242 0 0.00 1,218 -8.01 0.4152
2022-05-02 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,242 0 0.00 1,324 -11.50 0.3862
2022-02-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,242 472 26.67 1,496 47.97 0.4295
2021-10-22 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,770 -512 -22.44 1,011 -12.16 0.5195
2021-07-29 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,282 170 8.05 1,151 19.40 0.3586
2021-08-11 2021-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 2,112 1,597 310.10 964 542.67 0.3207
2021-05-05 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 80,112 79,597 37,718 0.6081
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 515 515 150 0.1018
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.