Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionBanco Santander, S.A.
Latest Disclosed Ownership276,035 shares
Latest Disclosed Value $ 38,470,998
Banco Santander, S.A. reports 5.42% increase in ownership of GILD / Gilead Sciences, Inc.

On May 8, 2026 - Banco Santander, S.A. filed a 13F-HR form disclosing ownership of 276,035 shares of Gilead Sciences, Inc. (CH:GILD) valued at $38,470,998 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 261,844 shares of Gilead Sciences, Inc.. This represents a change in shares of 5.42% 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)
2026-05-08 2026-03-31 13F GILEAD SCIENCES COM 375558103 276,035 14,191 5.42 38,471 19.70 0.1818
2026-02-13 2025-12-31 13F GILEAD SCIENCES COM 375558103 261,844 128,848 96.88 32,139 117.71 0.2407
2025-11-12 2025-09-30 13F GILEAD SCIENCES COM 375558103 132,996 -201 -0.15 14,763 -0.03 0.1311
2025-08-01 2025-06-30 13F GILEAD SCIENCES COM 375558103 133,197 -26,647 -16.67 14,768 -17.55 0.1402
2025-05-09 2025-03-31 13F GILEAD SCIENCES COM 375558103 159,844 18,269 12.90 17,911 36.96 0.1977
2025-02-07 2024-12-31 13F GILEAD SCIENCES COM 375558103 141,575 -131,985 -48.25 13,077 -42.98 0.1573
2024-11-12 2024-09-30 13F GILEAD SCIENCES COM 375558103 273,560 -66,268 -19.50 22,935 -1.63 0.2703
2024-07-29 2024-06-30 13F GILEAD SCIENCES COM 375558103 339,828 123,756 57.28 23,316 47.31 0.2890
2024-05-10 2024-03-31 13F GILEAD SCIENCES COM 375558103 216,072 216,072 15,827 0.1908
2023-08-14 2023-06-30 13F GILEAD SCIENCES COM 375558103 0 -2,463 -100.00 0 -100.00
2023-05-10 2023-03-31 13F GILEAD SCIENCES COM 375558103 2,463 2,463 204 0.0031
2022-07-28 2022-06-30 13F GILEAD SCIENCES COM 375558103 0 -21,213 -100.00 0 -100.00
2022-05-09 2022-03-31 13F GILEAD SCIENCES COM 375558103 21,213 5,665 36.44 1,261 11.79 0.0135
2022-02-09 2021-12-31 13F GILEAD SCIENCES COM 375558103 15,548 1,228 8.58 1,128 12.80 0.0061
2021-11-08 2021-09-30 13F GILEAD SCIENCES COM 375558103 14,320 -1,348 -8.60 1,000 -7.24 0.0054
2021-07-29 2021-06-30 13F GILEAD SCIENCES COM 375558103 15,668 15,668 1,078 0.0060
2021-02-12 2020-12-31 13F GILEAD SCIENCES COM 375558103 0 -9,298 -100.00 0 -100.00
2020-11-09 2020-09-30 13F GILEAD SCIENCES COM 375558103 9,298 -6,527 -41.24 588 -51.68 0.0077
2020-08-05 2020-06-30 13F GILEAD SCIENCES COM 375558103 15,825 -1,228,415 -98.73 1,217 -98.69 0.0158
2020-05-11 2020-03-31 13F GILEAD SCIENCES COM 375558103 1,244,240 1,228,709 7,911.33 93,020 9,119.03 1.0649
2020-02-07 2019-12-31 13F GILEAD SCIENCES COM 375558103 15,531 -1,706 -9.90 1,009 -7.60 0.0093
2019-11-06 2019-09-30 13F GILEAD SCIENCES COM 375558103 17,237 -914,982 -98.15 1,092 -98.27 0.0106
2019-08-07 2019-06-30 13F GILEAD SCIENCES COM 375558103 932,219 913,442 4,864.69 62,981 5,058.15 0.6390
2019-05-13 2019-03-31 13F GILEAD SCIENCES COM 375558103 18,777 8,872 89.57 1,221 97.25 0.0138
2019-02-12 2018-12-31 13F GILEAD SCIENCES COM 375558103 9,905 1,585 19.05 619 -3.73 0.0078
2018-11-13 2018-09-30 13F GILEAD SCIENCES COM 375558103 8,320 -7,213 -46.44 643 -41.55 0.0073
2018-08-14 2018-06-30 13F GILEAD SCIENCES COM 375558103 15,533 -1,531 -8.97 1,100 -14.53 0.0128
2018-05-14 2018-03-31 13F GILEAD SCIENCES COM 375558103 17,064 -15,904 -48.24 1,287 -45.51 0.0151
2018-02-14 2017-12-31 13F GILEAD SCIENCES COM 375558103 32,968 -2,838 -7.93 2,362 -18.41 0.0338
2017-11-13 2017-09-30 13F GILEAD SCIENCES COM 375558103 35,806 -416 -1.15 2,895 12.82 0.0477
2017-08-11 2017-06-30 13F GILEAD SCIENCES COM 375558103 36,222 -2,930 -7.48 2,566 -3.53 0.0504
2017-05-12 2017-03-31 13F GILEAD SCIENCES COM 375558103 39,152 2,133 5.76 2,660 5.85 0.0686
2017-02-17 2016-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 37,019 37,019 2,513 0.0662
2017-02-14 2016-12-31 13F GILEAD SCIENCES COM 375558103 37,019 2,513
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.