Insider · CIK 0001638643

O'Day Daniel Patrick

Reports to the SEC for 2 companies · FOSTER CITY, CA

sec.gov

Transactions

Companies

Filings

CIK

0001638643

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-10-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−12K sh	$147.72	−$1.77M	569,683
2026-10-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−3,000 sh	$148.63	−$446K	566,683
2026-09-10	GILDGILEAD SCIENCES, INC.M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	+8,780 sh	—	—	585,913
2026-09-10	GILDGILEAD SCIENCES, INC.F Tax Payment	Director, Chairman & CEO	FTax Payment	−4,230 sh	$144.81	−$613K	581,683
2026-09-10	GILDGILEAD SCIENCES, INC. · Restricted Stock UnitM Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	−8,780 sh	—	—	83,300
2026-09-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−1,600 sh	$147.51	−$236K	590,533
2026-09-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−7,992 sh	$148.36	−$1.19M	582,541
2026-09-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−5,408 sh	$149.38	−$808K	577,133
2026-08-03	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−6,700 sh	$129.66	−$869K	600,433
2026-08-03	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−7,700 sh	$130.80	−$1.01M	592,733
2026-08-03	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−600 sh	$131.34	−$78.8K	592,133
2026-07-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−11.9K sh	$126.09	−$1.5M	610,233
2026-07-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−3,100 sh	$127.08	−$394K	607,133
2026-06-10	GILDGILEAD SCIENCES, INC.M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	+8,779 sh	—	—	626,346
2026-06-10	GILDGILEAD SCIENCES, INC.F Tax Payment	Director, Chairman & CEO	FTax Payment	−4,213 sh	$121.48	−$512K	622,133
2026-06-10	GILDGILEAD SCIENCES, INC. · Restricted Stock UnitM Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	−8,779 sh	—	—	92,080
2026-06-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−10.9K sh	$131.10	−$1.43M	621,667
2026-06-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−3,062 sh	$132.22	−$405K	618,605
2026-06-01	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−1,038 sh	$132.97	−$138K	617,567
2026-04-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−6,950 sh	$128.79	−$895K	635,617
2026-04-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−3,050 sh	$130.01	−$397K	632,567
2026-03-27	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−10K sh	$136.82	−$1.37M	642,567
2026-03-10	GILDGILEAD SCIENCES, INC.M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	+20K sh	—	—	662,334
2026-03-10	GILDGILEAD SCIENCES, INC.F Tax Payment	Director, Chairman & CEO	FTax Payment	−9,767 sh	$148.56	−$1.45M	652,567
2026-03-10	GILDGILEAD SCIENCES, INC. · Restricted Stock UnitM Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	−20K sh	—	—	68,044
2026-03-10	GILDGILEAD SCIENCES, INC. · Restricted Stock UnitA Award	Director, Chairman & CEO	AAward	+32.8K sh	—	—	100,859
2026-03-10	GILDGILEAD SCIENCES, INC. · Non-qualified Stock Option (Right to Buy)A Award	Director, Chairman & CEO	AAward	+123K sh	—	—	122,755
2026-02-27	GILDGILEAD SCIENCES, INC.A Award	Director, Chairman & CEO	AAward	+38.4K sh	—	—	652,308
2026-02-27	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−3,481 sh	$144.04	−$501K	648,827
2026-02-27	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−6,419 sh	$145.18	−$932K	642,408
2026-02-27	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−100 sh	$145.71	−$14.6K	642,308
2026-02-05	GILDGILEAD SCIENCES, INC.M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	+116K sh	$66.01	+$7.63M	729,552
2026-02-05	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−116K sh	$150.00	−$17.3M	613,912
2026-02-05	GILDGILEAD SCIENCES, INC. · Non-qualified Stock Option (Right to Buy)M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	−116K sh	—	—	0
2026-02-03	GILDGILEAD SCIENCES, INC.A Award	Director, Chairman & CEO	AAward	+132K sh	—	—	688,373
2026-02-03	GILDGILEAD SCIENCES, INC.F Tax Payment	Director, Chairman & CEO	FTax Payment	−74.5K sh	$143.28	−$10.7M	613,912
2026-01-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−5,032 sh	$139.54	−$702K	561,666
2026-01-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−4,968 sh	$140.24	−$697K	556,698
2026-01-23	GILDGILEAD SCIENCES, INC.M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	+116K sh	$66.01	+$7.63M	682,338
2026-01-23	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−116K sh	$135.00	−$15.6M	566,698
2026-01-23	GILDGILEAD SCIENCES, INC. · Non-qualified Stock Option (Right to Buy)M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	−116K sh	—	—	115,640
2025-12-29	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−10K sh	$124.83	−$1.25M	566,698
2025-12-10	GILDGILEAD SCIENCES, INC.M Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	+10.4K sh	—	—	581,629
2025-12-10	GILDGILEAD SCIENCES, INC.F Tax Payment	Director, Chairman & CEO	FTax Payment	−4,931 sh	$121.34	−$598K	576,698
2025-12-10	GILDGILEAD SCIENCES, INC. · Restricted Stock UnitM Exercise/Conversion	Director, Chairman & CEO	MExercise/Conversion	−10.4K sh	—	—	88,070
2025-11-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−3,212 sh	$125.91	−$404K	577,991
2025-11-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−6,788 sh	$126.84	−$861K	571,203
2025-10-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−7,978 sh	$119.54	−$954K	583,225
2025-10-28	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−2,022 sh	$118.82	−$240K	581,203
2025-09-29	GILDGILEAD SCIENCES, INC.S Sale	Director, Chairman & CEO	SSale	−8,039 sh	$111.47	−$896K	593,164

Recent filings

Accepted (ET)
Oct 24
O'Day Daniel Patrick0001638643-26-000035
SEC(opens sec.gov)
Sep 114
O'Day Daniel Patrick0001638643-26-000033
SEC(opens sec.gov)
Sep 24
O'Day Daniel Patrick0001638643-26-000031
SEC(opens sec.gov)
Aug 44
O'Day Daniel Patrick0001638643-26-000028
SEC(opens sec.gov)
Jul 24
O'Day Daniel Patrick0001638643-26-000026
SEC(opens sec.gov)
Jun 114
O'Day Daniel Patrick0001638643-26-000024
SEC(opens sec.gov)
Jun 24
O'Day Daniel Patrick0001638643-26-000022
SEC(opens sec.gov)
Apr 294
O'Day Daniel Patrick0001638643-26-000020
SEC(opens sec.gov)

Companies

Address

333 LAKESIDE DRIVE

FOSTER CITY, CA, 94404