Transactions
49
Insider / GILEAD SCIENCES, INC.
O'Day Daniel Patrick
Chairman & CEO at GILEAD SCIENCES, INC.
- Company
- GILEAD SCIENCES, INC.
- Ticker
- GILD
- First filing on record
- October 29, 2025
- Latest trade on record
- October 1, 2026
- SEC filings
- EDGAR ↗
O'Day Daniel Patrick, Chairman & CEO at GILEAD SCIENCES, INC., has disclosed 49 transactions in GILD since October 29, 2025: 0 purchases (0 open-market buys) and 33 sales, worth about $81.5M at the reported prices. The latest was filed October 2, 2026, 1 day after the trade.
Open-market buys
0
Sales
33
Avg. disclosure lag
1.6d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months O'Day Daniel Patrick made no purchases and 33 sales worth $66M, plus 16 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
O'Day Daniel Patrick has traded 1 stock on record; the largest by dollars is GILD.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 19 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| S | Open-market sale | 28 | 376,280 | $52.4M |
| M | Option exercise or conversion | 12 | 558,582 | $15.3M |
| F | Shares withheld for tax | 5 | 97,602 | $13.8M |
| A | Grant or award | 4 | 325,641 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 41 | 0 | 27 · $62.0M |
| 2025 | 8 | 0 | 6 · $4.3M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| GILD | Sell S | October 1, 2026 | October 2, 2026 | 1d | 3,000 | $149 | $446K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | October 1, 2026 | October 2, 2026 | 1d | 12,000 | $148 | $1.8M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | September 10, 2026 | September 11, 2026 | 1d | 8,780 | — | — | derivative | Form 4 ↗ | |
| GILD | Sell F | September 10, 2026 | September 11, 2026 | 1d | 4,230 | $145 | $613K | Form 4 ↗ | ||
| GILD | Option / conversion M | September 10, 2026 | September 11, 2026 | 1d | 8,780 | — | — | Form 4 ↗ | ||
| GILD | Sell S | September 1, 2026 | September 2, 2026 | 1d | 5,408 | $149 | $808K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | September 1, 2026 | September 2, 2026 | 1d | 7,992 | $148 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | September 1, 2026 | September 2, 2026 | 1d | 1,600 | $148 | $236K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | August 3, 2026 | August 4, 2026 | 1d | 600 | $131 | $79K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | August 3, 2026 | August 4, 2026 | 1d | 7,700 | $131 | $1.0M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | August 3, 2026 | August 4, 2026 | 1d | 6,700 | $130 | $869K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | July 1, 2026 | July 2, 2026 | 1d | 3,100 | $127 | $394K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | July 1, 2026 | July 2, 2026 | 1d | 11,900 | $126 | $1.5M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | June 10, 2026 | June 11, 2026 | 1d | 8,779 | — | — | derivative | Form 4 ↗ | |
| GILD | Sell F | June 10, 2026 | June 11, 2026 | 1d | 4,213 | $121 | $512K | Form 4 ↗ | ||
| GILD | Option / conversion M | June 10, 2026 | June 11, 2026 | 1d | 8,779 | — | — | Form 4 ↗ | ||
| GILD | Sell S | June 1, 2026 | June 2, 2026 | 1d | 1,038 | $133 | $138K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | June 1, 2026 | June 2, 2026 | 1d | 3,062 | $132 | $405K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | June 1, 2026 | June 2, 2026 | 1d | 10,900 | $131 | $1.4M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | April 28, 2026 | April 29, 2026 | 1d | 3,050 | $130 | $397K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | April 28, 2026 | April 29, 2026 | 1d | 6,950 | $129 | $895K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | March 27, 2026 | March 30, 2026 | 3d | 10,000 | $137 | $1.4M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Other A | March 10, 2026 | March 12, 2026 | 2d | 122,755 | — | — | derivative | Form 4 ↗ | |
| GILD | Other A | March 10, 2026 | March 12, 2026 | 2d | 32,815 | — | — | derivative | Form 4 ↗ | |
| GILD | Option / conversion M | March 10, 2026 | March 12, 2026 | 2d | 20,026 | — | — | derivative | Form 4 ↗ | |
| GILD | Sell F | March 10, 2026 | March 12, 2026 | 2d | 9,767 | $149 | $1.5M | Form 4 ↗ | ||
| GILD | Option / conversion M | March 10, 2026 | March 12, 2026 | 2d | 20,026 | — | — | Form 4 ↗ | ||
| GILD | Sell S | February 27, 2026 | March 2, 2026 | 3d | 100 | $146 | $15K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | February 27, 2026 | March 2, 2026 | 3d | 6,419 | $145 | $932K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | February 27, 2026 | March 2, 2026 | 3d | 3,481 | $144 | $501K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Other A | February 27, 2026 | March 2, 2026 | 3d | 38,396 | — | — | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | February 5, 2026 | February 6, 2026 | 1d | 115,640 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| GILD | Sell S | February 5, 2026 | February 6, 2026 | 1d | 115,640 | $150 | $17.3M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | February 5, 2026 | February 6, 2026 | 1d | 115,640 | $66 | $7.6M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell F | February 3, 2026 | February 5, 2026 | 2d | 74,461 | $143 | $10.7M | Form 4 ↗ | ||
| GILD | Other A | February 3, 2026 | February 5, 2026 | 2d | 131,675 | — | — | Form 4 ↗ | ||
| GILD | Sell S | January 28, 2026 | January 29, 2026 | 1d | 4,968 | $140 | $697K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | January 28, 2026 | January 29, 2026 | 1d | 5,032 | $140 | $702K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | January 23, 2026 | January 26, 2026 | 3d | 115,640 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| GILD | Sell S | January 23, 2026 | January 26, 2026 | 3d | 115,640 | $135 | $15.6M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | January 23, 2026 | January 26, 2026 | 3d | 115,640 | $66 | $7.6M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | December 29, 2025 | December 30, 2025 | 1d | 10,000 | $125 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| GILD | Option / conversion M | December 10, 2025 | December 11, 2025 | 1d | 10,426 | — | — | derivative | Form 4 ↗ | |
| GILD | Sell F | December 10, 2025 | December 11, 2025 | 1d | 4,931 | $121 | $598K | Form 4 ↗ | ||
| GILD | Option / conversion M | December 10, 2025 | December 11, 2025 | 1d | 10,426 | — | — | Form 4 ↗ | ||
| GILD | Sell S | November 28, 2025 | December 1, 2025 | 3d | 6,788 | $127 | $861K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | November 28, 2025 | December 1, 2025 | 3d | 3,212 | $126 | $404K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | October 28, 2025 | October 29, 2025 | 1d | 2,022 | $119 | $240K | 10b5-1 plan | Form 4 ↗ | |
| GILD | Sell S | October 28, 2025 | October 29, 2025 | 1d | 7,978 | $120 | $954K | 10b5-1 plan | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| October 2, 2026 | Form 4 | 0001638643-26-000035 | 2 | published | EDGAR ↗ |
| September 11, 2026 | Form 4 | 0001638643-26-000033 | 3 | published | EDGAR ↗ |
| September 2, 2026 | Form 4 | 0001638643-26-000031 | 3 | published | EDGAR ↗ |
| August 4, 2026 | Form 4 | 0001638643-26-000028 | 3 | published | EDGAR ↗ |
| July 2, 2026 | Form 4 | 0001638643-26-000026 | 2 | published | EDGAR ↗ |
| June 11, 2026 | Form 4 | 0001638643-26-000024 | 3 | published | EDGAR ↗ |
| June 2, 2026 | Form 4 | 0001638643-26-000022 | 3 | published | EDGAR ↗ |
| April 29, 2026 | Form 4 | 0001638643-26-000020 | 2 | published | EDGAR ↗ |
| March 30, 2026 | Form 4 | 0001638643-26-000018 | 1 | published | EDGAR ↗ |
| March 12, 2026 | Form 4 | 0001638643-26-000014 | 5 | published | EDGAR ↗ |
| March 2, 2026 | Form 4 | 0001638643-26-000012 | 4 | published | EDGAR ↗ |
| February 6, 2026 | Form 4 | 0001638643-26-000010 | 3 | published | EDGAR ↗ |
| February 5, 2026 | Form 4 | 0001638643-26-000008 | 2 | published | EDGAR ↗ |
| January 29, 2026 | Form 4 | 0001638643-26-000006 | 2 | published | EDGAR ↗ |
| January 26, 2026 | Form 4 | 0001638643-26-000004 | 3 | published | EDGAR ↗ |
| December 30, 2025 | Form 4 | 0001638643-25-000017 | 1 | published | EDGAR ↗ |
| December 11, 2025 | Form 4 | 0001638643-25-000015 | 3 | published | EDGAR ↗ |
| December 1, 2025 | Form 4 | 0001638643-25-000013 | 2 | published | EDGAR ↗ |
| October 29, 2025 | Form 4 | 0001638643-25-000011 | 2 | published | EDGAR ↗ |
Other insiders at GILEAD SCIENCES, INC.
- Mercier Johanna Chief Commercial Officer 51 rows
- Dickinson Andrew D Chief Financial Officer 30 rows
- Bluestone Jeffrey Director 20 rows
- Berger Dietmar Chief Medical Officer 15 rows
- Cain Wettan Keeley M EVP Gen Counsel, Legal & Comp 15 rows
- Telman Deborah H Director 13 rows
- Kramer Kelly A. Director 12 rows
- WELTERS ANTHONY Director 10 rows
- Rodriguez Javier Director 7 rows
- Horning Sandra Director 6 rows
Everyone on file, with contracts and lobbying under the company's name: GILEAD SCIENCES, INC..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Rule 10b5-1 trading plans The plan must be set up when the insider has no important non-public information.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 19 | 49 | October 29, 2025 | October 2, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.