SUTRON CORP

CUSIP: 869380105 Class: COM

Invesco Ltd.'s Holding History (CIK: 0000914208)

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

Q1 2015
Shares 93,400 Value ($000) $474 Avg Close — Range —
Q4 2014
Shares 95,000 Value ($000) $475 Avg Close — Range —
Q3 2014
Shares 80,233 Value ($000) $408 Avg Close — Range —
Q2 2014
Shares 15,646 Value ($000) $78 Avg Close — Range —