Insiders / Giraudo Bryan

Giraudo Bryan

CIK 1740847personinsider

Companies

2

First seen

Jan 5, 2026

Last activity

May 11, 2026

Companies

Company	Role	Shares held	Peak held	Trades	Latest
Gossamer Bio, Inc. · GOSS	Executive	389,737	693,750	24	—
Protagonist Therapeutics Inc · PTGX	Director	12,695	43,825	10	—

All securities held

3 positions · latest reported per filing

Company	Security	Shares	As of
Gossamer Bio, Inc.	Common Stock	389,737	Jan 2, 2026
Gossamer Bio, Inc.	Stock Option (Right to Buy)Derivative	96,667	Mar 19, 2026
Protagonist Therapeutics Inc	Common Stock	12,695	May 8, 2026

Activity

InsidersInstitutions

This person's insider trades (Form 4), across every company.

Date	Action	Company	Value	Shares Δ	Position after	Impact
May 7, 2026	Sell	PTGX Protagonist Therapeutics Inc Common Stock	$3.61M	-36K -56.40%	27,825 0.04% of shares	medium
May 7, 2026	Sell	PTGX Protagonist Therapeutics Inc Common Stock	$1.20M	-12K -66.67%	6,000 <0.01% of shares	medium
May 8, 2026	Sell	PTGX Protagonist Therapeutics Inc Common Stock	$600.0K	-6K -100.00%	0 0.00% of shares	medium
May 8, 2026	Sell	PTGX Protagonist Therapeutics Inc Common Stock	$513.0K	-5K -28.78%	12,695 0.02% of shares	medium
May 7, 2026	Exercise	PTGX Protagonist Therapeutics Inc Common Stock	$154.8K	+24K +306.71%	31,825 0.05% of shares	low
May 7, 2026	Exercise	PTGX Protagonist Therapeutics Inc Common Stock	$83.8K	+12K +37.71%	43,825 0.07% of shares	low
Jan 2, 2026	Grant	PTGX Protagonist Therapeutics Inc Common Stock	$0	+3K +17.81%	17,825 0.03% of shares	low
Jan 2, 2026	Grant	GOSS Gossamer Bio, Inc. Common Stock	$0	+116K +42.25%	389,737 0.17% of shares	low
May 7, 2026	Exercise	PTGX Protagonist Therapeutics Inc Stock Option (right to buy)	—	-12K -100.00%	0 0.00% of shares	low
May 7, 2026	Exercise	PTGX Protagonist Therapeutics Inc Stock Option (right to buy)	—	-24K -100.00%	0 0.00% of shares	low