Aby J. Mathew

Insider

First SEC filing: June 10, 2026 · Latest: June 10, 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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

BLFS buying May 14, 2014

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 20 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

20 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 7, 2026	BLFS	F	516	$27.79	$14,340	388,460 Direct	-0.13%	Disposed	32.0% (price as of 2026-08-20)
June 18, 2026	BLFS	F	564	$26.04	$14,687	388,976 Direct	-0.14%	Disposed	40.9% (price as of 2026-08-20)
June 8, 2026	BLFS	F	627	$26.10	$16,365	389,540	—	—	40.5% (price as of 2026-08-20)
March 8, 2018	BLFS	A	197,707	—	—	197,707 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 16, 2018	BLFS	M	7,142	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 16, 2018	BLFS	M	7,142	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 16, 2018	BLFS	M	7,142	$0.56	$4,000	166,022 Direct	+4.50%	Acquired	6450.0% (price as of 2026-08-20)
Jan. 16, 2018	BLFS	M	7,142	$0.70	$4,999	158,880 Direct	+4.71%	Acquired	5140.0% (price as of 2026-08-20)
Jan. 1, 2018	BLFS	A	15,208	—	—	151,738 Direct	+11.14%	Acquired	(price as of 2026-08-20)
June 13, 2017	BLFS	M	24,285	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 13, 2017	BLFS	M	24,285	$1.40	$33,999	136,530 Direct	+21.64%	Acquired	2520.0% (price as of 2026-08-20)
Feb. 6, 2017	BLFS	M	35,714	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 6, 2017	BLFS	M	35,714	$1.12	$40,000	112,245 Direct	+46.67%	Acquired	3175.0% (price as of 2026-08-20)
Aug. 30, 2016	BLFS	M	7,142	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 30, 2016	BLFS	M	7,142	$0.98	$6,999	76,531 Direct	+10.29%	Acquired	3642.9% (price as of 2026-08-20)
March 15, 2016	BLFS	A	25,000	—	—	69,389 Direct	+56.32%	Acquired	(price as of 2026-08-20)
May 4, 2015	BLFS	A	229,837	—	—	229,837 Direct	—	Acquired	(price as of 2026-08-20)
March 24, 2015	BLFS	M	2,143	$1.12	$2,400	44,389 Direct	+5.07%	Acquired	3175.0% (price as of 2026-08-20)
March 24, 2015	BLFS	M	2,143	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 14, 2014	BLFS	P	8,600	$2.33	$20,038	42,246 Direct	+25.56%	Acquired	1474.2% (price as of 2026-08-20)
April 21, 2014	BLFS	A	10,000	—	—	10,000 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
March 8, 2018	BLFS	Employee Stock Option	Common Stock (197,707)	$1.64	Dec. 20, 2021	197,707	Acquired
Jan. 16, 2018	BLFS	Stock Option (right to buy)	Common Stock (7,142)	$0.56	Nov. 5, 2018	7,142	Disposed
Jan. 16, 2018	BLFS	Stock Option (right to buy)	Common Stock (7,142)	$0.70	Feb. 11, 2018	7,142	Disposed
June 13, 2017	BLFS	Stock Option (Right to Buy)	Common Stock (24,285)	$1.40	Aug. 7, 2017	24,285	Disposed
Feb. 6, 2017	BLFS	Stock Option (Right to Buy)	Common Stock (35,714)	$1.12	Feb. 6, 2017	35,714	Disposed
Aug. 30, 2016	BLFS	Stock Option (Right to Buy)	Common Stock	—	Oct. 12, 2016	7,142	Disposed
May 4, 2015	BLFS	Stock Option (Right to Buy)	Common Stock (229,837)	$2.06	May 4, 2025	229,837	Acquired
March 24, 2015	BLFS	Employee Stock Option (Right to Buy)	Common Stock	—	Sept. 28, 2015	2,143	Disposed
April 21, 2014	BLFS	Employee Stock Option (Right to Buy)	Common Stock (10,000)	$3.70	April 21, 2024	10,000	Acquired

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

Initial ownership (Form 3) 10 holdings

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

Date	Ticker	Security	Shares	Ownership
Aug. 20, 2012	BLFS	Common Stock	471,036	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (60,000)	60,000	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (100,000)	100,000	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (500,000)	500,000	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (340,000)	340,000	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (100,000)	100,000	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (100,000)	100,000	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (531,532)	531,532	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (776,316)	776,316	Direct
Aug. 20, 2012	BLFS	Stock Option (right to buy)→ Common Stock (250,000)	250,000	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

BLFS

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$435,000	—	—	—	$172,260	—	$14,723	$1,733,494
2023	$435,000	—	—	—	—	—	$13,200	$1,345,688
2022	$419,750	$111,510	—	—	—	—	$12,200	$1,699,295

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.