SUPERTEX INC

CUSIP: 868532102 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q1 2014
Shares 6,068 Value ($000) $200 Avg Close — Range —
Q4 2013
Shares 6,527 Value ($000) $164 Avg Close — Range —
Q3 2013
Shares 6,827 Value ($000) $173 Avg Close — Range —
Q2 2013
Shares 7,192 Value ($000) $172 Avg Close — Range —