HYDROGENICS CORP.

CUSIP: 448883108 Class: COM

S Squared Technology, LLC's Holding History (CIK: 0001322924)

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

Q1 2015
Shares 112,591 Value ($000) $1,276 Avg Close — Range —
Q4 2014
Shares 136,050 Value ($000) $1,808 Avg Close — Range —
Q3 2014
Shares 131,279 Value ($000) $2,209 Avg Close — Range —
Q2 2014
Shares 110,729 Value ($000) $2,068 Avg Close — Range —
Q1 2014
Shares 69,900 Value ($000) $1,905 Avg Close — Range —