SONUS NETWORKS INC

CUSIP: 835916107 Class: CMN

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2014
Shares 6,862,490 Value ($000) $27,244 Avg Close — Range —
Q3 2014
Shares 6,961,990 Value ($000) $23,810 Avg Close — Range —
Q2 2014
Shares 7,016,290 Value ($000) $25,188 Avg Close — Range —
Q1 2014
Shares 6,979,060 Value ($000) $23,519 Avg Close — Range —
Q4 2013
Shares 6,972,960 Value ($000) $21,965 Avg Close — Range —
Q3 2013
Shares 6,990,360 Value ($000) $23,627 Avg Close — Range —
Q2 2013
Shares 7,013,760 Value ($000) $21,111 Avg Close — Range —