Gail Schulze

Insider

First SEC filing: Nov. 1, 2007 · Latest: Nov. 1, 2007

On this page

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

CERS buying May 24, 2023

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 52 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

52 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 5, 2024	CERS	A	40,000	$5.00	$200,000	163,420 Direct	+32.41%	Acquired	-44.0% (price as of 2026-08-21)
June 7, 2023	CERS	A	40,000	$5.00	$200,000	123,420 Direct	+47.95%	Acquired	-44.0% (price as of 2026-08-21)
May 24, 2023	CERS	P	9,850	$2.03	$19,996	83,420 Direct	+13.39%	Acquired	37.9% (price as of 2026-08-21)
Dec. 28, 2022	CERS	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 28, 2022	CERS	M	25,000	$3.19	$79,750	73,570 Direct	+51.47%	Acquired	-12.2% (price as of 2026-08-21)
June 1, 2022	CERS	A	39,866	—	—	39,866 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2022	CERS	A	20,454	—	—	48,570 Direct	+72.75%	Acquired	(price as of 2026-08-21)
Dec. 28, 2021	CERS	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 28, 2021	CERS	M	25,000	$3.19	$79,750	73,570 Direct	+51.47%	Acquired	-12.2% (price as of 2026-08-21)
Nov. 9, 2021	CERS	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 9, 2021	CERS	S	25,000	$7.54	$188,500	28,116 Direct	-47.07%	Disposed	-62.9% (price as of 2026-08-21)
Nov. 9, 2021	CERS	M	25,000	$2.86	$71,500	53,116 Direct	+88.92%	Acquired	-2.1% (price as of 2026-08-21)
June 2, 2021	CERS	A	14,888	—	—	28,116 Direct	+112.55%	Acquired	(price as of 2026-08-21)
June 2, 2021	CERS	A	29,983	—	—	29,983 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2021	CERS	M	13,228	—	—	13,228 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2021	CERS	M	13,228	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 14, 2020	CERS	M	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 14, 2020	CERS	S	47,393	$7.27	$344,547	0 Direct	-100.00%	Disposed	-61.5% (price as of 2026-08-21)
Dec. 14, 2020	CERS	S	15,000	$7.48	$112,200	47,393 Direct	-24.04%	Disposed	-62.6% (price as of 2026-08-21)
Dec. 14, 2020	CERS	M	15,000	$2.48	$37,200	62,393 Direct	+31.65%	Acquired	12.9% (price as of 2026-08-21)
June 5, 2020	CERS	M	11,184	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 5, 2020	CERS	M	11,184	—	—	47,393 Direct	+30.89%	Acquired	(price as of 2026-08-21)
June 3, 2020	CERS	A	13,228	—	—	13,228 Direct	—	Acquired	(price as of 2026-08-21)
June 3, 2020	CERS	A	28,177	—	—	28,177 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 4, 2019	CERS	M	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 4, 2019	CERS	S	15,000	$4.19	$62,850	25,986 Direct	-36.60%	Disposed	-33.2% (price as of 2026-08-21)
Dec. 4, 2019	CERS	M	15,000	$1.80	$27,000	40,986 Direct	+57.72%	Acquired	55.6% (price as of 2026-08-21)
June 5, 2019	CERS	A	11,184	—	—	11,184 Direct	—	Acquired	(price as of 2026-08-21)
June 5, 2019	CERS	A	23,703	—	—	23,703 Direct	—	Acquired	(price as of 2026-08-21)
June 4, 2019	CERS	M	10,223	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 4, 2019	CERS	M	10,223	—	—	36,209 Direct	+39.34%	Acquired	(price as of 2026-08-21)
June 8, 2018	CERS	M	37,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 8, 2018	CERS	M	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 8, 2018	CERS	S	37,500	$6.65	$249,375	25,986 Direct	-59.07%	Disposed	-57.9% (price as of 2026-08-21)
June 8, 2018	CERS	M	37,500	$0.79	$29,625	63,486 Direct	+144.31%	Acquired	254.4% (price as of 2026-08-21)
June 8, 2018	CERS	S	15,000	$6.65	$99,750	25,986 Direct	-36.60%	Disposed	-57.9% (price as of 2026-08-21)
June 8, 2018	CERS	M	15,000	$0.82	$12,300	40,986 Direct	+57.72%	Acquired	241.5% (price as of 2026-08-21)
June 6, 2018	CERS	A	10,223	—	—	10,223 Direct	—	Acquired	(price as of 2026-08-21)
June 6, 2018	CERS	A	19,242	—	—	19,242 Direct	—	Acquired	(price as of 2026-08-21)
June 6, 2018	CERS	A	10,223	—	—	10,223 Direct	—	Acquired	(price as of 2026-08-21)
June 6, 2018	CERS	A	16,399	—	—	16,399 Direct	—	Acquired	(price as of 2026-08-21)
June 5, 2018	CERS	M	15,853	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 5, 2018	CERS	M	15,853	—	—	25,986 Direct	+156.45%	Acquired	(price as of 2026-08-21)
June 7, 2017	CERS	A	15,853	—	—	15,853 Direct	—	Acquired	(price as of 2026-08-21)
June 7, 2017	CERS	A	38,005	—	—	38,005 Direct	—	Acquired	(price as of 2026-08-21)
June 6, 2017	CERS	M	10,133	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 6, 2017	CERS	M	10,133	—	—	10,133 Direct	—	Acquired	(price as of 2026-08-21)
June 8, 2016	CERS	A	10,133	—	—	10,133 Direct	—	Acquired	(price as of 2026-08-21)
June 8, 2016	CERS	A	20,743	—	—	20,743 Direct	—	Acquired	(price as of 2026-08-21)
June 10, 2015	CERS	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-21)
June 11, 2014	CERS	A	43,800	—	—	43,800 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 2, 2013	CERS	A	25,000	—	—	25,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 3, 2012	CERS	A	25,000	—	—	25,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 3, 2011	CERS	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 4, 2010	CERS	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 12, 2009	CERS	A	37,500	—	—	37,500 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 2, 2009	CERS	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 2, 2008	CERS	A	2,794	—	—	2,794 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 3, 2007	CERS	A	25,000	—	—	25,000 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
Dec. 28, 2022	CERS	Option (Right to Buy)	Common Stock (25,000)	$3.19	Jan. 1, 2023	25,000	Disposed
June 1, 2022	CERS	Option (Right to Buy)	Common Stock (39,866)	$4.84	May 31, 2032	39,866	Acquired
Dec. 28, 2021	CERS	Option (Right to Buy)	Common Stock (25,000)	$3.19	Jan. 1, 2023	25,000	Disposed
Nov. 9, 2021	CERS	Option (Right to Buy)	Common Stock (25,000)	$2.86	Jan. 2, 2022	25,000	Disposed
June 2, 2021	CERS	Option (Right to Buy)	Common Stock (29,983)	$5.62	June 1, 2031	29,983	Acquired
June 1, 2021	CERS	Restricted Stock Unit	Common Stock (13,228)	—	—	13,228	Disposed
Dec. 14, 2020	CERS	Option (Right to Buy)	Common Stock (15,000)	$2.48	Jan. 2, 2021	15,000	Disposed
June 5, 2020	CERS	Restricted Stock Unit	Common Stock (11,184)	—	—	11,184	Disposed
June 3, 2020	CERS	Restricted Stock Unit	Common Stock (13,228)	—	—	13,228	Acquired
June 3, 2020	CERS	Option (Right to Buy)	Common Stock (28,177)	$6.37	June 2, 2030	28,177	Acquired
Dec. 4, 2019	CERS	Option (Right to Buy)	Common Stock (15,000)	$1.80	Jan. 3, 2020	15,000	Disposed
June 5, 2019	CERS	Restricted Stock Unit	Common Stock (11,184)	—	—	11,184	Acquired
June 5, 2019	CERS	Option (Right to Buy)	Common Stock (23,703)	$4.80	June 4, 2029	23,703	Acquired
June 4, 2019	CERS	Restricted Stock Unit	Common Stock (10,223)	—	—	10,223	Disposed
June 8, 2018	CERS	Option (Right to Buy)	Common Stock (37,500)	$0.79	Jan. 11, 2019	37,500	Disposed
June 8, 2018	CERS	Option (Right to Buy)	Common Stock (15,000)	$0.82	Jan. 1, 2019	15,000	Disposed
June 6, 2018	CERS	Restricted Stock Unit	Common Stock (10,223)	—	—	10,223	Acquired
June 6, 2018	CERS	Option (Right to Buy)	Common Stock (19,242)	$6.77	June 5, 2028	19,242	Acquired
June 6, 2018	CERS	Restricted Stock Unit	Common Stock (10,223)	—	—	10,223	Acquired
June 6, 2018	CERS	Option (Right to Buy)	Common Stock (16,399)	$6.77	June 5, 2028	16,399	Acquired
June 5, 2018	CERS	Restricted Stock Unit	Common Stock (15,853)	—	—	15,853	Disposed
June 7, 2017	CERS	Restricted Stock Unit	Common Stock (15,853)	—	—	15,853	Acquired
June 7, 2017	CERS	Option Right to Buy	Common Stock (38,005)	$2.61	June 6, 2027	38,005	Acquired
June 6, 2017	CERS	Restricted Stock Unit	Common Stock (10,133)	—	—	10,133	Disposed
June 8, 2016	CERS	Restricted Stock Unit	Common Stock (10,133)	—	—	10,133	Acquired
June 8, 2016	CERS	Option (Right to Buy)	Common Stock (20,743)	$6.08	June 7, 2026	20,743	Acquired
June 10, 2015	CERS	Option (Right to Buy)	Common Stock (30,000)	$5.40	June 9, 2025	30,000	Acquired
June 11, 2014	CERS	Option (Right to Buy)	Common Stock (43,800)	$4.34	June 10, 2024	43,800	Acquired
Jan. 2, 2013	CERS	Option (Right to Buy)	Common Stock (25,000)	$3.19	Jan. 1, 2023	25,000	Acquired
Jan. 3, 2012	CERS	Option (Right to Buy)	Common Stock (25,000)	$2.86	Jan. 2, 2022	25,000	Acquired
Jan. 3, 2011	CERS	Option (Right to Buy)	Common Stock (15,000)	$2.48	Jan. 2, 2021	15,000	Acquired
Jan. 4, 2010	CERS	Option (Right to Buy)	Common Stock (15,000)	$1.80	Jan. 3, 2020	15,000	Acquired
Jan. 12, 2009	CERS	Option (Right to Buy)	Common Stock (37,500)	$0.79	Jan. 11, 2019	37,500	Acquired
Jan. 2, 2009	CERS	Option (Right to Buy)	Common Stock (15,000)	$0.82	Jan. 1, 2019	15,000	Acquired
Jan. 2, 2008	CERS	Option (Right to Buy)	Common Stock (2,794)	$6.51	Jan. 1, 2018	2,794	Acquired
Dec. 3, 2007	CERS	Option (Right to Buy)	Common Stock (25,000)	$7.72	Dec. 2, 2017	25,000	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
Nov. 1, 2007	CERS	No securities owned.	0	Direct