SUPERTEX INC

CUSIP: 868532102 Class: COM

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

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

Q1 2014
Shares 754,925 Value ($000) $24,897 Avg Close — Range —
Q4 2013
Shares 809,325 Value ($000) $20,274 Avg Close — Range —
Q3 2013
Shares 1,096,355 Value ($000) $27,782 Avg Close — Range —
Q2 2013
Shares 1,424,625 Value ($000) $34,063 Avg Close — Range —