K Laura Campbell

Insider Trading: Purchases

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
ATHX	$1.01	20,000	$20,200.00	501,815	2017-02-01	Filing
ATHX	$1.01	10,000	$10,085.00	33,063	2012-11-28	Filing
ATHX	$1.37	10,000	$13,700.00	23,063	2012-05-23	Filing
ATHX	$1.94	10,000	$19,400.00	13,063	2011-08-23	Filing