Gilead Sciences (GILD) insider buying and selling
Every Table I transaction reported by directors and officers of S&P 500 companies on SEC Form 4 filings (2 business days to file): each row labeled with its official transaction code, nothing filtered out beforehand.
Open-market purchases (code P) are the rare signal, in green; sales (code S) are common and often pre-scheduled (10b5-1). Table II (derivatives) is not included: its prices are exercise prices, not market values. Guide: insider buying.
| Date | Ticker | Insider | Role | Shares | Price | Amount | % of stake | Type / filing |
|---|
Download these transactions as CSV No account, no sign-up. The data is public: it comes from SEC Form 4 filings.
Gilead Sciences, Inc. (GILD) insider buying and selling: no purchases, 51 sales
137 Form 4 Table I transactions filed with the SEC by Gilead Sciences, Inc. insiders between 2025-08-29 and 2026-10-16 (15-month history): 0 open-market purchases and 51 sales, plus 86 transactions under other Form 4 codes, broken down one by one below. The largest open-market trade is a sale of $17.3M by O'Day Daniel Patrick on 2026-02-05.
Gilead Sciences insider buying and selling over the last 12 months
Between Oct 21, 2025 and Oct 20, 2026, Gilead Sciences insiders filed 45 sales worth $87.9M on the open market, and no purchases.
The biggest seller was O'Day Daniel Patrick (Chairman & CEO): $52.4M in 14 sales, out of 7 different sellers.
The largest trade of the period was a sale of $17.3M on Feb 5, 2026, by O'Day Daniel Patrick (Chairman & CEO), under a 10b5-1 plan. Form 4 on sec.gov (0001638643-26-000010).
Of the 45 sales, 44 (98%, $87.3M) carry the 10b5-1 plan flag on the Form 4, meaning they were scheduled months ahead; the other one does not.
The last three months show 11 sales, against 9 in the three before. The latest sale from Oct 15, 2026.
Against its sector (Healthcare, 59 companies with an insider page on this site), over the same dates the median is 9 sales and 0 purchases on the open market. Gilead Sciences has more sales than 56 of the other 58, ranks 10 of 59 by net dollars sold, and 19 of the 59 have at least one purchase.
The 20 most important trades
With no open-market purchases, the table starts with GILD's sales, largest first. The full history is in the tool above, already searched.
See all 137 GILD trades in the full history →
| Trade date | Filed | Insider | Role | Amount | Code | Filing |
|---|---|---|---|---|---|---|
| 2026-02-05 | 2026-02-06 | O'Day Daniel Patrick | Chairman & CEO | $17.3M | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. | SEC |
| 2026-01-23 | 2026-01-26 | O'Day Daniel Patrick | Chairman & CEO | $15.6M | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. | SEC |
| 2025-11-12 | 2025-11-13 | Telman Deborah H | EVP, Corporate Affairs & GC | $6.6M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transactions reported in the Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on August 13, 2025. F2 Sales prices for the transactions reported here range from $121.87 to $122.83. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request. F3 Sales prices for the transactions reported here range from $122.88 to $122.92. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request. | SEC |
| 2026-02-17 | 2026-02-18 | Mercier Johanna | Chief Comm & Corp Aff Officer | $4.3M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025. F2 Sale prices for the transactions reported range from $153.565 to $154.56 Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $154.57 to $155.27 Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-08-17 | 2026-08-18 | Mercier Johanna | Chief Comm & Corp Aff Officer | $3.9M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025. F2 Sale prices for the transactions reported range from $136.74 to $137.73. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $137.75 to $138.36. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-05-15 | 2026-05-18 | Mercier Johanna | Chief Comm & Corp Aff Officer | $3.7M | S — Open-market sale (scheduled 10b5-1)5 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025. F2 Sale prices for the transactions reported range from $129.66 to $130.63. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $130.67 to $131.505. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F4 Sale prices for the transactions reported range from $131.71 to $132.55. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F5 Sale prices for the transactions reported range from $132.74 to $132.78. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2025-11-17 | 2025-11-18 | Mercier Johanna | Chief Commercial Officer | $3.5M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025. F2 Sales prices for the transactions reported here range from $125.23 to $126.20. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request. F3 Sales prices for the transactions reported here range from $126.23 to $126.39. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request. | SEC |
| 2026-08-26 | 2026-08-27 | Welters Anthony | Director | $2.7M | S — Open-market sale (scheduled 10b5-1)5 Form 4 footnotesF1 The transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on May 27, 2026. F2 Sale prices for the transactions reported range from $147.58 to $148.5799. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $148.58 to $149.5799. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F4 Sale prices for the transactions reported range from $147.57 to $148.5699. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F5 Sale prices for the transactions reported range from $148.57 to $149.5699. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-09-01 | 2026-09-02 | O'Day Daniel Patrick | Chairman & CEO | $2.2M | S — Open-market sale (scheduled 10b5-1)4 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 25, 2026. F2 Sale prices for the transactions reported range from $146.94 to $147.92. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $147.95 to $148.93. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F4 Sale prices for the transactions reported range from $148.96 to $149.94. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-10-01 | 2026-10-02 | O'Day Daniel Patrick | Chairman & CEO | $2.2M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 25, 2026. F2 Sale prices for the transactions reported range from $147.21 to $148.205. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $148.23 to $149.13. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-06-01 | 2026-06-02 | O'Day Daniel Patrick | Chairman & CEO | $2.0M | S — Open-market sale (scheduled 10b5-1)4 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 25, 2026. F2 Sale prices for the transactions reported range from $130.66 to $131.64. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $131.71 to $132.70. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F4 Sale prices for the transactions reported range from $132.71 to $133.295. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-08-03 | 2026-08-04 | O'Day Daniel Patrick | Chairman & CEO | $2.0M | S — Open-market sale (scheduled 10b5-1)4 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 25, 2026. F2 Sale prices for the transactions reported range from $129.17 to $130.16. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $130.18 to $131.17. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F4 Sale prices for the transactions reported range from $131.21 to $131.47. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-07-01 | 2026-07-02 | O'Day Daniel Patrick | Chairman & CEO | $1.9M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 25, 2026. F2 Sale prices for the transactions reported range from $125.59 to $126.55. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $126.595 to $127.44. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-02-27 | 2026-03-02 | O'Day Daniel Patrick | Chairman & CEO | $1.4M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF2 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F3 Sale prices for the transactions reported range from $143.63 to $144.59. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F4 Sale prices for the transactions reported range from $144.66 to $145.65. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-01-28 | 2026-01-29 | O'Day Daniel Patrick | Chairman & CEO | $1.4M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F2 Sale prices for the transactions reported range from $138.99 to $139.97. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $140.00 to $140.57. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-03-27 | 2026-03-30 | O'Day Daniel Patrick | Chairman & CEO | $1.4M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F2 Sale prices for the transactions reported range from $136.51 to $137.22. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2026-04-28 | 2026-04-29 | O'Day Daniel Patrick | Chairman & CEO | $1.3M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F2 Sale prices for the transactions reported range from $128.41 to $129.325. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $129.42 to $130.47. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2025-11-28 | 2025-12-01 | O'Day Daniel Patrick | Chairman & CEO | $1.3M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F2 Sale prices for the transactions reported range from $125.41 to $126.33. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $126.50 to $127.48. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2025-12-29 | 2025-12-30 | O'Day Daniel Patrick | Chairman & CEO | $1.2M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 The transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F2 Sale prices for the transactions reported range from $124.40 to $125.16. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
| 2025-10-28 | 2025-10-29 | O'Day Daniel Patrick | Chairman & CEO | $1.2M | S — Open-market sale (scheduled 10b5-1)3 Form 4 footnotesF1 The transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025. F2 Sale prices for the transactions reported range from $119.08 to $120.06. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. F3 Sale prices for the transactions reported range from $118.61 to $119.06. Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer, or its shareowners upon request. | SEC |
The period balance: money in, money out
In the Form 4 filings submitted between Aug 29, 2025 and Oct 16, 2026 there is not one open-market purchase of Gilead Sciences, Inc.: 51 sales worth $91.4M and zero dollars bought.
Only codes P and S count, where an insider puts in or takes out their own money. A selling balance like Gilead Sciences, Inc.'s is the norm in the S&P 500, where much of the pay comes as stock. It is not a recommendation to buy or sell: it is what was filed.
Every transaction, code by code
| Code | What it means | Trades | Reported amount |
|---|---|---|---|
| S | Open-market sale | 51 | $91.4M |
| M | Option exercise | 40 | $28.0M |
| F | Tax withholding (shares surrendered for taxes) | 31 | $25.9M |
| A | Grant or award | 15 | $0 |
| Total | Everything filed in the period | 137 | $145.3M |
42 of the 137 rows carry no usable amount on the Form 4: they count as trades and add $0. The code labels come from the SEC index.
Who has traded
Over the 15 months of history, 16 distinct people or entities have filed Gilead Sciences, Inc. transactions: none bought on the open market and 7 sold. Counted by CIK, the fixed number the SEC gives each filer, and not by name, which each filer types their own way.
Of the 7 who sold on the open market (51 sales in all), the three biggest sellers account for $80.6M of the $91.4M: 88% of the money in three people.
| Filer | Role | Transactions | Bought (count) | Sold (count) | Last filed |
|---|---|---|---|---|---|
| O'Day Daniel Patrick | Chairman & CEO | 31 | — | $54.7M (16) | 2026-10-02 |
| Mercier Johanna | Chief Comm & Corp Aff Officer | 31 | — | $19.3M (14) | 2026-10-16 |
| Telman Deborah H | EVP, Corporate Affairs & GC | 6 | — | $6.6M (1) | 2025-11-13 |
| Dickinson Andrew D | Chief Financial Officer | 27 | — | $5.4M (14) | 2026-10-16 |
| Welters Anthony | Director | 3 | — | $2.7M (1) | 2026-08-27 |
| Bluestone Jeffrey | Director | 7 | — | $2.0M (3) | 2026-08-21 |
| Kramer Kelly A. | Director | 4 | — | $713k (2) | 2025-12-01 |
| Berger Dietmar | Chief Medical Officer | 9 | — | — | 2026-09-11 |
Shown here are the 8 who moved the most money, out of 16. The rest are in the full history, one link above. The name links to all their trades, in any company. "Transactions" counts any code; the money, open market only. Role: from their latest filing.
Month by month
By the month the trade was executed, not the month it was filed; months with no trades show zero. The busiest month was Nov 2025: 0 purchases and 7 sales, worth $13.0M. None of the 15 months is blank.
| Month | Purchases | Amount | Sales | Amount |
|---|---|---|---|---|
| Aug 2025 | 0 | $0 | 1 | $1.1M |
| Sep 2025 | 0 | $0 | 3 | $1.7M |
| Oct 2025 | 0 | $0 | 3 | $1.8M |
| Nov 2025 | 0 | $0 | 7 | $13.0M |
| Dec 2025 | 0 | $0 | 3 | $2.0M |
| Jan 2026 | 0 | $0 | 5 | $18.4M |
| Feb 2026 | 0 | $0 | 4 | $23.6M |
| Mar 2026 | 0 | $0 | 3 | $2.2M |
| Apr 2026 | 0 | $0 | 3 | $2.1M |
| May 2026 | 0 | $0 | 2 | $4.1M |
| Jun 2026 | 0 | $0 | 3 | $2.7M |
| Jul 2026 | 0 | $0 | 3 | $2.7M |
| Aug 2026 | 0 | $0 | 5 | $9.6M |
| Sep 2026 | 0 | $0 | 3 | $3.1M |
| Oct 2026 | 0 | $0 | 3 | $3.2M |
The last month may be partial: a Form 4 is filed up to two business days later. The table does not say whether the pattern is good or bad; it says when it happened.
Gilead Sciences, Inc. (GILD) analysis page →
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How to read this data
20 of the 20 sales in the table are flagged as scheduled (10b5-1 plan): signed months ahead and executed automatically, so they say nothing about what the insider thinks today. Gilead Sciences has no open-market purchase (code P) in the history, the most common case in the S&P 500: insiders are already paid in stock. The latest filing is from Oct 16, 2026, and a Form 4 arrives up to two business days after the trade.
20 of the 20 rows in the table carry footnotes from the Form 4 itself, folded into the code column and copied verbatim; a row with no footnote means the filing has none.
Guide: Insider buying · all guides
What is behind these trades
The concepts on this page, explained from scratch in the Academy. Free, no account.
- What the efficiency hypothesis says and what it does NOT sayIf an insider's purchase is public and anyone can read it, is there any information left in it? That is the exact question that brings people here.
- Who really moves the market: the types of investorWho sits on the other side of each order, and where a company's own insiders fit among them.
- Supply, demand and price: why it rises and falls constantlyHow a piece of news ends up inside the price, and why the reaction to a filed sale is rarely the one you would expect.
Source: SEC EDGAR Form 4. This is a list of public facts, not financial advice or a recommendation to buy or sell.