OSI SYSTEMS INC

Ticker: OSIS CUSIP: 671044105 Class: EQTY

CONGRESS ASSET MANAGEMENT CO /MA's Holding History (CIK: 0000897378)

Note: Option positions (PUT/CALL) are excluded.

Q4 2017

Shares 35,853 Value ($000) $2,308 Avg Close $84.03 Range $53.80 - $96.64

Q3 2017

Shares 34,716 Value ($000) $3,172 Avg Close $81.30 Range $74.96 - $92.34

Q2 2017

Shares 16,858 Value ($000) $1,267 Avg Close $75.70 Range $69.08 - $82.26

Q1 2017

Shares 9,788 Value ($000) $714 Avg Close $74.27 Range $69.45 - $81.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	35,853	$2,308	$84.03	$53.80 - $96.64
Q3 2017	34,716	$3,172	$81.30	$74.96 - $92.34
Q2 2017	16,858	$1,267	$75.70	$69.08 - $82.26
Q1 2017	9,788	$714	$74.27	$69.45 - $81.55