Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionCallahan Advisors, LLC
Latest Disclosed Ownership3,156 shares
Latest Disclosed Value $ 439,885
Callahan Advisors, LLC reports 0.13% increase in ownership of GILD / Gilead Sciences, Inc.

On May 12, 2026 - Callahan Advisors, LLC filed a 13F-HR form disclosing ownership of 3,156 shares of Gilead Sciences, Inc. (CH:GILD) valued at $439,885 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 3,152 shares of Gilead Sciences, Inc.. This represents a change in shares of 0.13% 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)
2026-05-12 2026-03-31 13F Gilead Sciences COM 375558103 3,156 4 0.13 440 13.73 0.0367
2026-02-06 2025-12-31 13F Gilead Sciences COM 375558103 3,152 5 0.16 387 10.60 0.0318
2025-10-31 2025-09-30 13F Gilead Sciences COM 375558103 3,147 5 0.16 349 0.29 0.0297
2025-07-28 2025-06-30 13F Gilead Sciences COM 375558103 3,142 -1,506 -32.40 348 -33.08 0.0313
2025-05-01 2025-03-31 13F Gilead Sciences COM 375558103 4,648 -1,892 -28.93 521 -13.91 0.0496
2025-01-31 2024-12-31 13F Gilead Sciences COM 375558103 6,540 3,415 109.28 604 130.53 0.0569
2024-10-30 2024-09-30 13F Gilead Sciences COM 375558103 3,125 -994 -24.13 262 -7.09 0.0255
2024-07-29 2024-06-30 13F Gilead Sciences COM 375558103 4,119 1,008 32.40 283 24.23 0.0294
2024-04-24 2024-03-31 13F Gilead Sciences COM 375558103 3,111 8 0.26 228 -9.56 0.0239
2024-01-24 2023-12-31 13F Gilead Sciences COM 375558103 3,103 6 0.19 251 8.19 0.0292
2023-10-23 2023-09-30 13F Gilead Sciences COM 375558103 3,097 7 0.23 232 -2.52 0.0292
2023-07-31 2023-06-30 13F Gilead Sciences COM 375558103 3,090 -493 -13.76 238 -19.87 0.0289
2023-04-28 2023-03-31 13F Gilead Sciences COM 375558103 3,583 -144 -3.86 297 -6.90 0.0384
2023-02-03 2022-12-31 13F Gilead Sciences COM 375558103 3,727 27 0.73 320 39.91 0.0438
2022-11-14 2022-09-30 13F/A-1 Gilead Sciences COM 375558103 3,700 9 0.24 228 0.00 0.0327
2022-10-27 2022-09-30 13F Gilead Sciences COM 375558103 3,700 9 228 0.0327
2022-07-29 2022-06-30 13F Gilead Sciences COM 375558103 3,691 9 0.24 228 4.11 0.0303
2022-04-27 2022-03-31 13F Gilead Sciences COM 375558103 3,682 3,682 219 0.0250
2022-02-07 2021-12-31 13F Gilead Sciences COM 375558103 0 -2,865 -100.00 0 -100.00
2021-11-03 2021-09-30 13F Gilead Sciences COM 375558103 2,865 2,865 200 0.0252
2021-04-21 2021-03-31 13F Gilead Sciences COM 375558103 0 -3,843 -100.00 0 -100.00
2021-01-20 2020-12-31 13F Gilead Sciences COM 375558103 3,843 207 5.69 224 -2.61 0.0328
2020-10-26 2020-09-30 13F Gilead Sciences COM 375558103 3,636 -628 -14.73 230 -29.88 0.0376
2020-07-17 2020-06-30 13F Gilead Sciences COM 375558103 4,264 -359 -7.77 328 -5.20 0.0582
2020-04-06 2020-03-31 13F Gilead Sciences COM 375558103 4,623 -595 -11.40 346 2.06 0.0726
2020-01-21 2019-12-31 13F Gilead Sciences COM 375558103 5,218 -494 -8.65 339 -6.35 0.0544
2019-10-21 2019-09-30 13F Gilead Sciences COM 375558103 5,712 -934 -14.05 362 -19.38 0.0632
2019-07-17 2019-06-30 13F Gilead Sciences COM 375558103 6,646 -2,694 -28.84 449 -26.03 0.0806
2019-04-22 2019-03-31 13F Gilead Sciences COM 375558103 9,340 -16,244 -63.49 607 -62.06 0.1130
2019-01-24 2018-12-31 13F Gilead Sciences COM 375558103 25,584 -2,895 -10.17 1,600 -27.24 0.3416
2018-10-15 2018-09-30 13F Gilead Sciences COM 375558103 28,479 -53,497 -65.26 2,199 -62.13 0.4080
2018-07-19 2018-06-30 13F Gilead Sciences COM 375558103 81,976 -4,065 -4.72 5,807 -10.48 1.1446
2018-04-30 2018-03-31 13F Gilead Sciences COM 375558103 86,041 2,393 2.86 6,487 8.24 1.3299
2018-01-30 2017-12-31 13F Gilead Sciences COM 375558103 83,648 -6,408 -7.12 5,993 -17.86 1.1897
2017-10-26 2017-09-30 13F Gilead Sciences COM 375558103 90,056 7,297 8.82 7,296 24.55 1.5341
2017-07-31 2017-06-30 13F Gilead Sciences COM 375558103 82,759 3,731 4.72 5,858 9.13 1.2750
2017-04-27 2017-03-31 13F Gilead Sciences COM 375558103 79,028 -19,634 -19.90 5,368 -24.02 1.2085
2017-01-31 2016-12-31 13F Gilead Sciences COM 375558103 98,662 -2,058 -2.04 7,065 -11.34 1.7031
2016-10-14 2016-09-30 13F Gilead Sciences COM 375558103 100,720 9,178 10.03 7,969 4.36 1.9941
2016-07-25 2016-06-30 13F Gilead Sciences COM 375558103 91,542 768 0.85 7,636 -8.43 2.0055
2016-04-29 2016-03-31 13F Gilead Sciences COM 375558103 90,774 5,282 6.18 8,339 -3.61 2.2856
2016-02-05 2015-12-31 13F Gilead Sciences COM 375558103 85,492 4,229 5.20 8,651 8.42 2.4672
2015-10-21 2015-09-30 13F Gilead Sciences COM 375558103 81,263 1,467 1.84 7,979 -14.60 2.4500
2015-07-28 2015-06-30 13F Gilead Sciences COM 375558103 79,796 2,360 3.05 9,343 22.95 2.6893
2015-04-20 2015-03-31 13F Gilead Sciences COM 375558103 77,436 77,436 0.00 7,599 2.2146
2015-01-27 2014-12-31 13F Gilead Sciences COM 375558103 0 -73,338 -100.00 0 -100.00
2014-10-21 2014-09-30 13F Gilead Sciences COM 375558103 73,338 142 0.19 7,807 28.64 2.4188
2014-07-25 2014-06-30 13F Gilead Sciences COM 375558103 73,196 9,871 15.59 6,069 35.26 1.9285
2014-05-05 2014-03-31 13F Gilead Sciences COM 375558103 63,325 -4,140 -6.14 4,487 -11.45 1.5277
2014-01-22 2013-12-31 13F Gilead Sciences COM 375558103 67,465 -1,305 -1.90 5,067 17.18 1.7670
2013-10-31 2013-09-30 13F Gilead Sciences COM 375558103 68,770 1,240 1.84 4,324 24.90 1.6491
2013-07-30 2013-06-30 13F Gilead Sciences COM 375558103 67,530 67,530 3,462 1.4159
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.