Hua Shan

Insider

First SEC filing: July 12, 2022 · Latest: June 2, 2026

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 5 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

5 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 2, 2026	CERS	A	60,000	—	—	192,386 Direct	+45.32%	Acquired	(price as of 2026-08-21)
June 3, 2025	CERS	A	60,000	—	—	132,386 Direct	+82.89%	Acquired	(price as of 2026-08-21)
June 5, 2024	CERS	A	40,000	$5.00	$200,000	72,386 Direct	+123.51%	Acquired	-44.0% (price as of 2026-08-21)
May 13, 2024	CERS	P	2,500	$1.99	$4,975	32,386 Direct	+8.37%	Acquired	40.7% (price as of 2026-08-21)
July 1, 2022	CERS	A	58,074	—	—	58,074 Direct	—	Acquired	(price as of 2026-08-21)
July 1, 2022	CERS	A	29,886	—	—	29,886 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.

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
July 1, 2022	CERS	Option (Right to Buy)	Common Stock (58,074)	$5.48	June 30, 2032	58,074	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
July 12, 2022	CERS	No securities owned	0	Direct