Gilead Sciences GILD
Gilead Sciences is the 57th largest S&P 500 company by market cap, worth $193 billion. 9 directors have filed with the SEC in the last 12 months (who counts), 1 of them an executive. 6 other officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 10.4% of the company.
- Chair and CEO
- Daniel Patrick O'Day
- Sector
- Health Care
- Sub-industry
- Biotechnology
- Headquarters
- Foster City, California
- Founded
- 1987
- More
- Wikipedia
- Market cap
- $193B
- 57th largest, 23 Oct 2026 close
- Price to sales
- 6.6
- Market cap over revenue
- Market cap per employee
- $11M
- Market cap over employees
- Connections
- 3
- S&P 500 companies sharing a director or officer
Largest institutional holders
Each fund group's share of Gilead Sciences. Where a company has several share classes, the share is of its total value.
13F filings for the quarter to 30 Jun 2026
Board and officers
3 people here also hold roles at other S&P 500 companies.
Roles filed up to 30 Sep 2026
| Name | Title |
|---|---|
| Directors (9) | |
| Daniel Patrick O'DayChairman & CEO | |
| Jacqueline K. BartonDirector | |
| Jeffrey BluestoneDirector | |
| Sandra HorningDirectorAlso at Moderna | |
| Kelly A. KramerDirectorAlso at Coinbase | |
| Ted W. LoveDirector | |
| Harish ManwaniDirector | |
| Javier RodriguezDirectorAlso at DaVita | |
| Anthony WeltersDirector | |
| Officers (6) | |
| Andrew D. DickinsonChief Financial OfficerLast filed 16 Sep 2026 | |
| Dietmar BergerChief Medical OfficerLast filed 11 Sep 2026 | |
| Erin BurkhartSVP, ControllershipLast filed 23 Sep 2026 | |
| Johanna MercierChief Comm & Corp Aff OfficerLast filed 16 Sep 2026 | |
| Deborah H. TelmanEVP, Corporate Affairs & GCLast filed 13 Nov 2025 | |
| Keeley M. Cain WettanEVP Gen Counsel, Legal & CompLast filed 11 Sep 2026 | |
Companies that share people with Gilead Sciences
Each person's title here, then at the other company.
Gilead Sciences' market cap since December 2008
Weekly, up to 23 Oct 2026
| Week ending | Market cap |
|---|---|
| 23 Oct 2026 | $193B |
| 26 Dec 2025 | $155B |
| 27 Dec 2024 | $117B |
| 29 Dec 2023 | $101B |
| 30 Dec 2022 | $108B |
| 31 Dec 2021 | $91.1B |
| 25 Dec 2020 | $71.5B |
| 27 Dec 2019 | $83.4B |
| 28 Dec 2018 | $80.0B |
| 29 Dec 2017 | $93.6B |
| 30 Dec 2016 | $94.3B |
| 25 Dec 2015 | $149B |
| 26 Dec 2014 | $142B |
| 27 Dec 2013 | $114B |
| 28 Dec 2012 | $54.8B |
| 30 Dec 2011 | $30.7B |
| 31 Dec 2010 | $29.4B |
| 25 Dec 2009 | $38.7B |
| 26 Dec 2008 | $46.1B |
Download Gilead Sciences' data as JSON, with the weekly market caps in billions of dollars from 5 Dec 2008.
Workforce
Headcount at 31 Dec 2025
- Employees
- 17,000
As of December 31, 2025, Gilead had approximately 17,000 employees.
Insider trades
Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.
Trades from 30 Sep 2025 to 30 Sep 2026
Directors and officers sold $85.4 million of stock in 44 sales and made no open-market purchases in the 12 months to 30 Sep 2026.
| Date | Person | Value |
|---|---|---|
| 15 Sep 2026Sale | Andrew D. DickinsonChief Financial Officer | $436K |
| 15 Sep 2026Sale | Johanna MercierChief Comm & Corp Aff Officer | $433K |
| 1 Sep 2026Sale | Daniel Patrick O'DayChairman & CEO | $2.2M |
| 26 Aug 2026Sale | Anthony WeltersDirector | $2.7M |
| 20 Aug 2026Sale | Jeffrey BluestoneDirector | $725K |
| 17 Aug 2026Sale | Johanna MercierChief Comm & Corp Aff Officer | $3.9M |
| 17 Aug 2026Sale | Andrew D. DickinsonChief Financial Officer | $415K |
| 3 Aug 2026Sale | Daniel Patrick O'DayChairman & CEO | $2.0M |
| 15 Jul 2026Sale | Andrew D. DickinsonChief Financial Officer | $390K |
| 15 Jul 2026Sale | Johanna MercierChief Comm & Corp Aff Officer | $390K |
Showing 10 of 44 trades
Trades by members of Congress and officials
Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.
Trades from 20 Oct 2023 to 20 Oct 2026
12 people disclosed 25 purchases and 16 sales of Gilead Sciences stock since October 2023.
| Date | Member or official | Amount |
|---|---|---|
| 10 Aug 2026 | Rohit KhannaHouse, D-CA 路 Sold | $1K to $15K |
| 23 Jul 2026 | Donald J TrumpPresident 路 Bought | $15K to $50K |
| 20 Jul 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 7 Jul 2026 | Rohit KhannaHouse, D-CA 路 Sold | $1K to $15K |
| 23 Jun 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 15 Jun 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 12 Jun 2026 | Donald J TrumpPresident 路 Sold | $1K to $15K |
| 18 May 2026 | Donald J TrumpPresident 路 Sold | $1K to $15K |
| 15 May 2026 | Donald J TrumpPresident 路 Bought | $15K to $50K |
| 6 May 2026 | Jared MoskowitzHouse, D-FL 路 Bought | $1K to $15K |
Showing 10 of 41 trades
WARN layoff notices
Notices filed under Gilead Sciences' own name. Subsidiaries that file under their own names are not included.
Notices from 26 Oct 2023 to 26 Oct 2026
Gilead Sciences filed 11 notices covering 718 workers since October 2023.
| Notice | Place | Workers |
|---|---|---|
| 1 May 2026 | Redwood City, CA | 108 |
| 30 Apr 2026 | Rockville, MD | 84 |
| 26 Mar 2026 | San Mateo, CA | 51 |
| 22 Jan 2026 | Oceanside, CA | 34 |
| 12 Nov 2025 | Oceanside, CA | 17 |
| 6 Aug 2025 | Oceanside, CA | 5 |
| 11 Jun 2025 | Oceanside, CA | 36 |
| 27 Mar 2025 | Foster City, CA | 149 |
| 13 Nov 2024 | Foster City, CA | 104 |
| 13 Nov 2024 | Seattle, WA | 72 |
Showing 10 of 11 notices