OXYSURE SYSTEMS INC

CUSIP: 69208t101 Class: COM

DF DENT & CO INC's Holding History (CIK: 0000934999)

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

Q1 2015
Shares 10,000 Value ($000) $8 Avg Close — Range —
Q4 2014
Shares 10,000 Value ($000) $8 Avg Close — Range —