NATIONAL TECHNICAL SYS INC

CUSIP: 638104109 Class: COM

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

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

Q3 2013
Shares 3,444 Value ($000) $79 Avg Close — Range —
Q2 2013
Shares 3,273 Value ($000) $46 Avg Close — Range —