N. Mark Tompkins

Insider Trading: Sales

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
AMST	$2.90	16,234	$47,127.30	0	2021-05-03	Filing
AMST	$2.72	28,655	$78,056.22	0	2021-04-30	Filing
AMST	$2.61	16,169	$42,265.77	0	2021-04-29	Filing
AMST	$2.86	3,400	$9,737.60	2,563,249	2021-04-28	Filing
AMST	$2.95	11,519	$34,015.61	2,566,649	2021-04-27	Filing
AMST	$2.97	13,500	$40,081.50	2,578,168	2021-04-26	Filing
AMST	$2.79	10,627	$29,659.96	2,591,668	2021-04-16	Filing
AMST	$3.23	25,000	$80,850.00	2,602,295	2021-04-15	Filing
AMST	$3.25	12,050	$39,174.55	2,627,795	2021-04-14	Filing
AMST	$3.26	26,494	$86,370.44	2,639,845	2021-04-13	Filing
AMST	$3.43	15,539	$53,314.31	2,666,339	2021-04-12	Filing
AMST	$3.52	11,000	$38,720.00	2,681,878	2021-04-09	Filing
AMST	$3.58	43,450	$155,464.10	2,692,878	2021-04-08	Filing
AMST	$4.19	67,904	$284,517.76	2,736,328	2021-04-06	Filing
AMST	$4.21	9,924	$41,770.12	2,804,232	2021-04-05	Filing
AMST	$4.12	29,427	$121,298.09	2,814,156	2021-04-01	Filing
AMST	$4.26	11,250	$47,868.75	2,843,583	2021-03-31	Filing
AMST	$4.26	45,834	$195,252.84	2,854,833	2021-03-30	Filing
AMST	$6.02	3,449	$20,762.98	2,900,667	2021-03-05	Filing
AMST	$5.54	16,551	$91,692.54	2,904,116	2021-03-04	Filing