James Huang

Activist

First SEC filing: May 11, 2026 · Latest: May 11, 2026

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

2 buys (P) 0 sells (S) Net: $4,374,000 + 8 non-open-market transactions below Avg return of open purchases vs now: -20.6% 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

8 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 29, 2026	CNTB	P	150,000	$2.48	$372,000	13,310,000 Indirect	+1.14%	Acquired	-7.7% (price as of 2026-08-21)
March 31, 2026	CNTB	P	1,160,000	$3.45	$4,002,000	13,160,000 Indirect	+9.67%	Acquired	-33.6% (price as of 2026-08-21)
June 6, 2023	TCRT	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
June 22, 2022	TCRT	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
June 22, 2022	TCRT	A	80,000	—	—	188,333 Direct	+73.85%	Acquired	(price as of 2026-08-21)
June 22, 2022	TCRT	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
June 22, 2022	TCRT	A	80,000	—	—	188,333 Direct	+73.85%	Acquired	(price as of 2026-08-21)
Sept. 1, 2021	TCRT	P	100,000	$1.71	$171,000	108,333 Direct	+1200.05%	Acquired	-99.3% (price as of 2026-08-21)
March 4, 2021	TCRT	A	8,333	—	—	8,333 Direct	—	Acquired	(price as of 2026-08-21)
March 4, 2021	TCRT	A	62,500	—	—	62,500 Direct	—	Acquired	(price as of 2026-08-21)
July 20, 2020	TCRT	A	119,178	—	—	119,178 Direct	—	Acquired	(price as of 2026-08-21)

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.

Derivative holdings (Form 4 Table II)

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
June 6, 2023	TCRT	Employee Stock Option (right to buy)	Common Stock (100,000)	$0.48	June 5, 2033	100,000	Acquired
June 22, 2022	TCRT	Employee Stock Option (right to buy)	Common Stock (100,000)	$0.82	June 21, 2032	100,000	Acquired
June 22, 2022	TCRT	Employee Stock Option (right to buy)	Common Stock (100,000)	$0.82	June 21, 2032	100,000	Acquired
March 4, 2021	TCRT	Stock Option (right to buy)	Common Stock (62,500)	$4.31	March 3, 2031	62,500	Acquired
July 20, 2020	TCRT	Stock Option (right to buy)	Common Stock (119,178)	$3.43	July 20, 2030	119,178	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
March 18, 2026	CNTB	Ordinary Shares	12,000,000	Indirect