SUTRON CORP

CUSIP: 869380105 Class: COM

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q1 2015
Shares 135 Value ($000) $1 Avg Close — Range —
Q4 2014
Shares 3 Value ($000) $0 Avg Close — Range —
Q3 2014
Shares 477 Value ($000) $2 Avg Close — Range —
Q2 2014
Shares 23 Value ($000) $0 Avg Close — Range —
Q4 2013
Shares 600 Value ($000) $3 Avg Close — Range —
Q3 2013
Shares 791 Value ($000) $4 Avg Close — Range —