Mara G. Aspinall

Insider

First SEC filing: July 24, 2019 · Latest: July 24, 2019

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

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 14 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

14 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 14, 2025	OSUR	A	71,017	—	—	178,758 Direct	+65.91%	Acquired	(price as of 2026-08-21)
May 13, 2025	OSUR	F	6,666	$2.65	$17,665	107,741 Direct	-5.83%	Disposed	41.6% (price as of 2026-08-21)
May 14, 2024	OSUR	A	24,691	—	—	114,407 Direct	+27.52%	Acquired	(price as of 2026-08-21)
May 14, 2024	OSUR	F	6,619	$5.26	$34,816	89,716 Direct	-6.87%	Disposed	-28.7% (price as of 2026-08-21)
May 16, 2023	OSUR	A	24,517	—	—	96,335 Direct	+34.14%	Acquired	(price as of 2026-08-21)
May 15, 2023	OSUR	F	5,400	$5.62	$30,348	71,818 Direct	-6.99%	Disposed	-33.2% (price as of 2026-08-21)
Aug. 25, 2022	OSUR	P	6,000	$4.19	$25,140	77,218 Direct	+8.42%	Acquired	-10.4% (price as of 2026-08-21)
June 3, 2022	OSUR	F	6,745	$4.00	$26,980	71,218 Direct	-8.65%	Disposed	-6.2% (price as of 2026-08-21)
June 3, 2022	OSUR	A	24,983	$4.00	$99,932	77,963 Direct	-24.27%	Disposed	-6.2% (price as of 2026-08-21)
May 16, 2022	OSUR	A	20,000	$5.25	$105,000	52,980 Direct	+60.64%	Acquired	-28.5% (price as of 2026-08-21)
May 16, 2022	OSUR	F	2,957	$5.25	$15,524	32,980 Direct	-8.23%	Disposed	-28.5% (price as of 2026-08-21)
July 29, 2019	CSTL	C	17,180	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
July 29, 2019	CSTL	P	3,125	$16.00	$50,000	40,848 Direct	+8.28%	Acquired	103.3% (price as of 2026-08-21)
July 29, 2019	CSTL	C	14,093	—	—	37,723 Direct	+59.64%	Acquired	(price as of 2026-08-21)
May 8, 2018	OSUR	A	6,144	—	—	11,144 Direct	+122.88%	Acquired	(price as of 2026-08-21)
Nov. 7, 2017	OSUR	P	5,000	$14.23	$71,150	5,000 Direct	—	Acquired	-73.6% (price as of 2026-08-21)
June 21, 2017	OSUR	A	40,000	—	—	40,000 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
July 29, 2019	CSTL	Series F Preferred Stock	Common Stock (14,093)	—	—	17,180	Disposed
June 21, 2017	OSUR	Nonqualified stock options	Common stock (40,000)	$14.95	June 21, 2027	40,000	Acquired

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

Initial ownership (Form 3) 4 holdings

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

Date	Ticker	Security	Shares	Ownership
July 24, 2019	CSTL	Common Stock	23,630	Direct
July 24, 2019	CSTL	Stock option (right to buy)→ Common Stock (1,118)	1,118	Direct
July 24, 2019	CSTL	Stock option (right to buy)→ Common Stock (30,895)	30,895	Direct
July 24, 2019	CSTL	Series F Preferred Stock→ Common Stock (14,093)	14,093	Direct