Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionWelch & Forbes Llc
Latest Disclosed Ownership26,670 shares
Latest Disclosed Value $ 3,716,999
Welch & Forbes Llc reports 0.39% decrease in ownership of GILD / Gilead Sciences, Inc.

On May 1, 2026 - Welch & Forbes Llc filed a 13F-HR form disclosing ownership of 26,670 shares of Gilead Sciences, Inc. (CH:GILD) valued at $3,716,999 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 26,775 shares of Gilead Sciences, Inc.. This represents a change in shares of -0.39% 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)
2026-05-01 2026-03-31 13F GILEAD SCIENCES COM 375558103 26,670 -105 -0.39 3,717 13.09 0.0481
2026-02-10 2025-12-31 13F GILEAD SCIENCES COM 375558103 26,775 -149 -0.55 3,286 9.97 0.0398
2025-11-04 2025-09-30 13F GILEAD SCIENCES COM 375558103 26,924 0 0.00 2,989 0.10 0.0360
2025-08-05 2025-06-30 13F GILEAD SCIENCES COM 375558103 26,924 -500 -1.82 2,985 -2.83 0.0373
2025-05-02 2025-03-31 13F GILEAD SCIENCES COM 375558103 27,424 330 1.22 3,073 22.78 0.0402
2025-02-07 2024-12-31 13F GILEAD SCIENCES COM 375558103 27,094 -86 -0.32 2,503 9.83 0.0322
2024-11-04 2024-09-30 13F GILEAD SCIENCES COM 375558103 27,180 -35 -0.13 2,279 23.54 0.0290
2024-08-02 2024-06-30 13F GILEAD SCIENCES COM 375558103 27,215 -590 -2.12 1,845 -9.43 0.0246
2024-05-03 2024-03-31 13F GILEAD SCIENCES COM 375558103 27,805 -1,414 -4.84 2,037 -13.98 0.0280
2024-02-06 2023-12-31 13F GILEAD SCIENCES COM 375558103 29,219 -1,675 -5.42 2,367 2.25 0.0358
2023-11-03 2023-09-30 13F GILEAD SCIENCES COM 375558103 30,894 -336 -1.08 2,315 -3.78 0.0383
2023-07-28 2023-06-30 13F GILEAD SCIENCES COM 375558103 31,230 -816 -2.55 2,407 -9.48 0.0380
2023-04-14 2023-03-31 13F GILEAD SCIENCES COM 375558103 32,046 -784 -2.39 2,659 -5.68 0.0450
2023-02-02 2022-12-31 13F GILEAD SCIENCES COM 375558103 32,830 -2,507 -7.09 2,818 29.33 0.0505
2022-10-31 2022-09-30 13F GILEAD SCIENCES COM 375558103 35,337 -297 -0.83 2,179 -1.09 0.0426
2022-07-22 2022-06-30 13F GILEAD SCIENCES COM 375558103 35,634 -6,900 -16.22 2,203 -12.86 0.0403
2022-04-25 2022-03-31 13F GILEAD SCIENCES COM 375558103 42,534 -364 -0.85 2,528 -18.82 0.0398
2022-01-19 2021-12-31 13F GILEAD SCIENCES COM 375558103 42,898 175 0.41 3,114 4.36 0.0466
2021-10-13 2021-09-30 13F GILEAD SCIENCES COM 375558103 42,723 351 0.83 2,984 2.26 0.0496
2021-07-22 2021-06-30 13F GILEAD SCIENCES COM 375558103 42,372 -455 -1.06 2,918 5.42 0.0493
2021-04-14 2021-03-31 13F GILEAD SCIENCES COM 375558103 42,827 -948 -2.17 2,768 8.55 0.0511
2021-01-20 2020-12-31 13F GILEAD SCIENCES COM 375558103 43,775 -822 -1.84 2,550 -9.51 0.0499
2020-10-23 2020-09-30 13F GILEAD SCIENCES COM 375558103 44,597 -597 -1.32 2,818 -18.95 0.0608
2020-07-15 2020-06-30 13F GILEAD SCIENCES COM 375558103 45,194 -1,416 -3.04 3,477 -0.23 0.0814
2020-04-17 2020-03-31 13F GILEAD SCIENCES COM 375558103 46,610 -29,868 -39.05 3,485 -29.87 0.0973
2020-01-17 2019-12-31 13F GILEAD SCIENCES COM 375558103 76,478 -29,019 -27.51 4,969 -25.68 0.1106
2019-10-11 2019-09-30 13F GILEAD SCIENCES COM 375558103 105,497 -5,466 -4.93 6,686 -10.81 0.1596
2019-07-12 2019-06-30 13F GILEAD SCIENCES COM 375558103 110,963 -23,903 -17.72 7,496 -14.51 0.1825
2019-04-29 2019-03-31 13F GILEAD SCIENCES COM 375558103 134,866 -9,099 -6.32 8,768 -2.63 0.2200
2019-02-05 2018-12-31 13F GILEAD SCIENCES COM 375558103 143,965 -3,505 -2.38 9,005 -20.91 0.2539
2018-10-17 2018-09-30 13F GILEAD SCIENCES COM 375558103 147,470 -270 -0.18 11,386 8.80 0.2714
2018-07-16 2018-06-30 13F GILEAD SCIENCES COM 375558103 147,740 -7,927 -5.09 10,465 -10.83 0.2706
2018-04-12 2018-03-31 13F GILEAD SCIENCES COM 375558103 155,667 -1,929 -1.22 11,736 3.94 0.3024
2018-01-26 2017-12-31 13F GILEAD SCIENCES COM 375558103 157,596 -2,792 -1.74 11,291 -13.11 0.3014
2017-11-13 2017-09-30 13F GILEAD SCIENCES COM 375558103 160,388 -3,726 -2.27 12,995 11.86 0.3421
2017-07-31 2017-06-30 13F GILEAD SCIENCES COM 375558103 164,114 -5,124 -3.03 11,617 1.07 0.3247
2017-07-31 2017-03-31 13F/A-1 GILEAD SCIENCES COM 375558103 169,238 -77,402 -31.38 11,494 -34.92 0.3290
2017-04-27 2017-03-31 13F GILEAD SCIENCES COM 375558103 169,238 11,494
2017-02-07 2016-12-31 13F GILEAD SCIENCES COM 375558103 246,640 -28,581 -10.38 17,662 -18.89 0.5285
2016-11-02 2016-09-30 13F GILEAD SCIENCES COM 375558103 275,221 -15,265 -5.25 21,775 -10.14 0.7530
2016-08-02 2016-06-30 13F GILEAD SCIENCES COM 375558103 290,486 2,738 0.95 24,232 -8.33 0.7385
2016-05-05 2016-03-31 13F GILEAD SCIENCES COM 375558103 287,748 -12,797 -4.26 26,433 -13.08 0.8232
2016-01-27 2015-12-31 13F GILEAD SCIENCES COM 375558103 300,545 -1,014 -0.34 30,412 2.71 0.9758
2015-11-05 2015-09-30 13F GILEAD SCIENCES COM 375558103 301,559 1,563 0.52 29,610 -15.70 0.9884
2015-08-11 2015-06-30 13F GILEAD SCIENCES COM 375558103 299,996 -4,635 -1.52 35,124 17.50 1.0928
2015-04-30 2015-03-31 13F GILEAD SCIENCES COM 375558103 304,631 304,631 0.00 29,894 0.8982
2015-01-27 2014-12-31 13F GILEAD SCIENCES COM 375558103 0 -320,705 -100.00 0 -100.00
2014-10-27 2014-09-30 13F GILEAD SCIENCES COM 375558103 320,705 -11,781 -3.54 34,139 23.84 1.0421
2014-07-31 2014-06-30 13F GILEAD SCIENCES COM 375558103 332,486 26,059 8.50 27,567 26.96 0.8701
2014-05-01 2014-03-31 13F GILEAD SCIENCES COM 375558103 306,427 24,451 8.67 21,713 2.53 0.6877
2014-01-17 2013-12-31 13F GILEAD SCIENCES COM 375558103 281,976 22,871 8.83 21,177 29.99 0.6705
2013-10-31 2013-09-30 13F GILEAD SCIENCES COM 375558103 259,105 7,708 3.07 16,291 26.38 0.5484
2013-08-08 2013-06-30 13F GILEAD SCIENCES COM 375558103 251,397 251,397 12,890 0.4608
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.