Hongbo Lu

Insider

First SEC filing: March 18, 2024 · Latest: June 17, 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

ZBIO buying March 31, 2026

Insider transactions

4 buys (P) 0 sells (S) Net: $7,154,900 + 3 non-open-market transactions below Avg return of open purchases vs now: 50.0% 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

3 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 15, 2026	ZBIO	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
March 31, 2026	ZBIO	P	3,768	$18.63	$70,198	426,736 Indirect	+0.89%	Acquired	60.4% (price as of 2026-08-20)
March 31, 2026	ZBIO	P	75,000	$20.00	$1,500,000	422,968 Indirect	+21.55%	Acquired	49.4% (price as of 2026-08-20)
Feb. 11, 2026	ZBIO	P	25,985	$22.50	$584,662	347,968 Indirect	+8.07%	Acquired	32.8% (price as of 2026-08-20)
Oct. 7, 2025	ZBIO	P	263,160	$19.00	$5,000,040	321,983 Indirect	+447.38%	Acquired	57.3% (price as of 2026-08-20)
June 10, 2025	ZBIO	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 13, 2024	ZBIO	P	58,823	$17.00	$999,991	58,823 Indirect	—	Acquired	75.8% (price as of 2026-08-20)
Sept. 13, 2024	ZBIO	P	58,823	$17.00	$999,991	58,823 Indirect	—	Acquired	75.8% (price as of 2026-08-20)
Sept. 12, 2024	ZBIO	A	37,000	—	—	37,000 Direct	—	Acquired	(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.

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 15, 2026	ZBIO	Stock Option (Right to Buy)	Common Stock (18,500)	$18.71	June 15, 2036	18,500	Acquired
June 10, 2025	ZBIO	Stock Option (Right to Buy)	Common Stock (18,500)	$11.94	June 10, 2035	18,500	Acquired
Sept. 12, 2024	ZBIO	Stock Option (Right to Buy)	Common Stock (37,000)	$17.00	Sept. 11, 2034	37,000	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, 2024	ARWR	Common Stock	—	Direct