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Who

GILEAD SCIENCES, INC.

10% owner

Company insider

Files Form 4 as: 10% owner, Assembly Biosciences; 10% owner, Xilio Therapeutics; 10% owner, Arcus Biosciences; 10% owner, Kyverna Therapeutics; 10% owner, Kalaris Therapeutics; 10% owner, Achillion Pharmaceuticals.

In numbers

Trades disclosed
32
Buys
11
Sells
0
Bought
$628.1M
Sold
$0
Companies
6
Companies where not an officer
6
First trade
31 Oct 2006
Last trade
26 May 2026
Last filed
27 May 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
ASMB Assembly Biosciences10% owner · Biotechnology · last 26 May 20263 buys · 0 sells
XLO Xilio Therapeutics10% owner · Biotechnology · last 13 Feb 20262 buys · 0 sells
RCUS Arcus Biosciences10% owner · Biotechnology · last 18 Feb 20254 buys · 0 sells
KYTX Kyverna Therapeutics10% owner · Biotechnology · last 12 Feb 20241 buy · 0 sells
KLRS Kalaris Therapeutics10% owner · Biotechnology · last 27 Jun 20231 buy · 0 sells
Achillion Pharmaceuticals10% owner · last 31 Oct 20060 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
02Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
26 May 2026filed 27 May 2026ASMB Assembly BiosciencesBiotechnologySEC FORM 4 Code A$12.5M471,698 at $26.50filing
26 May 2026filed 27 May 2026ASMB Assembly BiosciencesBiotechnologySEC FORM 4 Code A$12.5M471,698 at $26.50filing
13 Feb 2026filed 17 Feb 2026XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P$2.0M3,739,000 at $0.5349filing
13 Feb 2026filed 17 Feb 2026XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P$2.0M3,739,000 at $0.53filing
26 Nov 2025filed 1 Dec 2025XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code X$10.0M13,335,000 at $0.75filing
26 Nov 2025filed 1 Dec 2025XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code X—13,335,000 at $0.00filing
8 Aug 2025filed 3 Oct 2025ASMB Assembly Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code P—1,147,960filing
8 Aug 2025filed 3 Oct 2025ASMB Assembly Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code P—1,147,960filing
8 Aug 2025filed 3 Oct 2025ASMB Assembly BiosciencesBiotechnologySEC FORM 4 Bought—2,295,920filing
5 Jun 2025filed 6 Jun 2025XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P—13,335,000filing
5 Jun 2025filed 6 Jun 2025XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P—13,335,000filing
5 Jun 2025filed 6 Jun 2025XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P—13,335,000filing
5 Jun 2025filed 6 Jun 2025XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P—13,335,000filing
18 Feb 2025filed 20 Feb 2025RCUS Arcus BiosciencesBiotechnologySEC FORM 4 Bought$15.0M1,363,636 at $11.00filing
19 Dec 2024filed 23 Dec 2024ASMB Assembly BiosciencesBiotechnologySEC FORM 4 Bought$20.1M940,499 at $21.37filing
18 Dec 2024filed 19 Dec 2024XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P$6.3M6,092,816 at $1.04filing
18 Dec 2024filed 19 Dec 2024XLO Xilio TherapeuticsBiotechnologySEC FORM 4 Bought$1.8M1,759,978 at $1.04filing
17 Jun 2024filed 20 Jun 2024ASMB Assembly Biosciencesoption or derivative · BiotechnologySEC FORM 4 Code P—179,500filing
17 Jun 2024filed 20 Jun 2024ASMB Assembly BiosciencesBiotechnologySEC FORM 4 Bought—179,500filing
2 Apr 2024filed 3 Apr 2024XLO Xilio Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P$3.0M3,882,450 at $0.76filing

News

Sectors

Health Care11

Buys in green, sells in red, by the company’s sector.

Related people

Yariv HouvrasChief Medical Officer · Chief Medical Officer at Xilio Therapeutics, filing Form 4 there in the last year
Jeanette M. BjorkquistPFO and PAO · PFO and PAO at Assembly Biosciences, filing Form 4 there in the last year
Aoife BrennanPresident and CEO · Director at Xilio Therapeutics, filing Form 4 there in the last year
Yuan XuDirector · Director at Xilio Therapeutics, filing Form 4 there in the last year
Akintunde Olatokumbo BelloDirector · Director at Xilio Therapeutics, filing Form 4 there in the last year
Alexander AzoyChief Accounting Officer · Also traded RCUS in the last 90 days
Donald J. TrumpPresident · Also traded RCUS in the last 90 days