Ralph James Scapa

Insider Trading: Sales

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
ALTR	$75.55	1,358	$102,595.54	0	2021-09-16	Filing
ALTR	$75.02	7,673	$575,613.11	1,358	2021-09-16	Filing
ALTR	$75.52	6,164	$465,511.44	0	2021-09-15	Filing
ALTR	$74.96	1,400	$104,938.40	6,164	2021-09-15	Filing
ALTR	$75.61	4,868	$368,045.14	0	2021-09-15	Filing
ALTR	$75.14	3,950	$296,810.90	4,868	2021-09-15	Filing
ALTR	$70.95	9,721	$689,666.07	0	2021-08-18	Filing
ALTR	$71.41	200	$14,282.00	0	2021-08-18	Filing
ALTR	$70.92	13,707	$972,100.44	200	2021-08-18	Filing
ALTR	$71.12	5,659	$402,445.44	0	2021-08-17	Filing
ALTR	$71.10	7,279	$517,558.74	0	2021-08-17	Filing
ALTR	$72.24	12,109	$874,766.27	0	2021-08-16	Filing
ALTR	$71.51	2,511	$179,554.08	12,109	2021-08-16	Filing
ALTR	$72.24	15,661	$1,131,397.62	0	2021-08-16	Filing
ALTR	$71.52	3,153	$225,512.02	15,661	2021-08-16	Filing
ALTR	$65.90	442	$29,128.24	0	2021-07-19	Filing
ALTR	$65.33	3,100	$202,519.90	442	2021-07-19	Filing
ALTR	$64.04	500	$32,018.50	3,542	2021-07-19	Filing
ALTR	$63.33	700	$44,331.70	4,042	2021-07-19	Filing
ALTR	$65.88	1,266	$83,404.08	0	2021-07-19	Filing