Steven H Ferris

Insider

First SEC filing: April 26, 2004 · Latest: April 26, 2004

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 3 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Oct. 12, 2004	GTBP	A	50,000	$0.59	$29,500	85,000 Direct	+142.86%	Acquired	-99.9% (price as of 2026-08-20)
April 26, 2004	GTBP	A	35,000	$0.69	$24,150	30,000 Direct	-53.85%	Disposed	-99.9% (price as of 2026-08-20)
April 26, 2004	GTBP	A	30,000	$0.69	$20,700	30,000 Direct	—	Acquired	-99.9% (price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Oct. 12, 2004	GTBP	stock option (right to buy)	common stock (50,000)	$0.59	Oct. 12, 2014	50,000	Acquired
April 26, 2004	GTBP	Common Stock	Common Stock (30,000)	$0.69	April 25, 2014	35,000	Disposed
April 26, 2004	GTBP	Common Stock	Common Stock (30,000)	$0.69	April 25, 2014	30,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
April 26, 2004	GTBP	Common Stock	13,982,567	Indirect