Liu David Y (CIK 0001675881)

Latest company ownership

PTGX - Protagonist Therapeutics, Inc

Role: Chief Scientific Officer

Shares held

35,331

Last filed at

Nov 17, 2022

Confidence Score

50.0

2025Q4

Confidence Score History

2017Q3 2025Q4

Recent buy/sell transactions

Exec date	Filing date	Company	Role	Signal	Confidence	Shares	% of shares	Under plan?	Amount (USD)
Feb 28, 2022	Mar 2, 2022	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	42.5	-2,119	-3.09%	✗	$51.4K
Aug 17, 2021	Aug 19, 2021	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	12.5	-14,779	-20.24%	✓	$702.9K
Aug 6, 2019	Aug 8, 2019	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	46.3	-3,395	-6.38%	✗	$30K
Feb 28, 2019	Mar 4, 2019	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	90.0	+14,190	38.34%	✗	$6.5K
Feb 6, 2019	Feb 8, 2019	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	46.3	-3,821	-9.36%	✗	$29.6K
Mar 12, 2018	Mar 13, 2018	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	20.0	-3,500	-18.89%	✓	$74.5K
Feb 28, 2018	Mar 2, 2018	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	91.3	+8,625	47.87%	✓	$17.5K
Jan 16, 2018	Jan 17, 2018	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	23.8	-875	-18.63%	✓	$17.5K
Dec 18, 2017	Dec 20, 2017	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	23.8	-875	-18.63%	✓	$17.5K
Nov 30, 2017	Dec 1, 2017	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	57.5	-	0.00%	✓	$17.5K
Nov 13, 2017	Nov 15, 2017	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	10.0	-7,000	-47.80%	✓	$118.8K
Aug 28, 2017	Aug 29, 2017	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	10.0	-3,500	-63.64%	✓	$52.5K
Jul 10, 2017	Jul 12, 2017	Protagonist Therapeutics, Inc	Chief Scientific Officer	Sell	13.8	-3,500	-63.64%	✓	$44.4K