Ann Lucena

Insider

First SEC filing: Aug. 10, 2021 · Latest: June 2, 2026

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 6 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

6 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 2, 2026	CERS	A	60,000	—	—	232,284 Direct	+34.83%	Acquired	(price as of 2026-08-20)
June 3, 2025	CERS	A	60,000	—	—	172,284 Direct	+53.44%	Acquired	(price as of 2026-08-20)
June 5, 2024	CERS	A	40,000	$5.00	$200,000	112,284 Direct	+55.34%	Acquired	-42.9% (price as of 2026-08-20)
Aug. 22, 2023	CERS	P	7,500	$1.68	$12,600	72,284 Direct	+11.58%	Acquired	69.9% (price as of 2026-08-20)
June 7, 2023	CERS	A	40,000	$5.00	$200,000	64,784 Direct	+161.39%	Acquired	-42.9% (price as of 2026-08-20)
Aug. 6, 2021	CERS	A	49,769	—	—	49,769 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 6, 2021	CERS	A	24,784	—	—	24,784 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.

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Aug. 6, 2021	CERS	Option (Right to Buy)	Common Stock (49,769)	$6.41	Aug. 5, 2031	49,769	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
Aug. 10, 2021	CERS	No securities owned	0	Direct