SUPERCONDUCTOR TECHNOLOGIES

CUSIP: 867931404 Class: COM PAR $0.001

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

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

Q1 2014
Shares 1,034 Value ($000) $3 Avg Close — Range —
Q4 2013
Shares 1,034 Value ($000) $2 Avg Close — Range —
Q3 2013
Shares 1,034 Value ($000) $2 Avg Close — Range —