THE ADT CORPORATION

CUSIP: 00101J106 Class: COM

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q1 2016
Shares 463,197 Value ($000) $19,112 Avg Close — Range —
Q4 2015
Shares 381,490 Value ($000) $12,582 Avg Close — Range —
Q3 2015
Shares 431,450 Value ($000) $12,900 Avg Close — Range —
Q2 2015
Shares 481,050 Value ($000) $16,149 Avg Close — Range —
Q1 2015
Shares 510,106 Value ($000) $21,180 Avg Close — Range —
Q4 2014
Shares 639,355 Value ($000) $23,164 Avg Close — Range —
Q3 2014
Shares 968,293 Value ($000) $34,336 Avg Close — Range —
Q2 2014
Shares 1,085,663 Value ($000) $37,933 Avg Close — Range —
Q1 2014
Shares 989,589 Value ($000) $29,638 Avg Close — Range —
Q4 2013
Shares 1,068,167 Value ($000) $43,229 Avg Close — Range —
Q3 2013
Shares 1,025,226 Value ($000) $41,686 Avg Close — Range —
Q2 2013
Shares 890,402 Value ($000) $35,483 Avg Close — Range —