CUSIP No. 820054104
1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Cat Rock Capital Management, LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)	(a)☐ (b)☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 1,227,567
	6	SHARED VOTING POWER
	7	SOLE DISPOSITIVE POWER
	8	SHARED DISPOSITIVE POWER

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,227,567
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 15.01%
12	TYPE OF REPORTING PERSON (see instructions) IA