AMBAC FINL GROUP INC

Ticker: OSG CUSIP: 023139884 Class: Common Stock

PRIVATE TRUST CO NA's Holding History (CIK: 0001277557)

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

Q3 2014
Shares 177 Value ($000) $4 Avg Close $23.53 Range $21.86 - $27.54
Q2 2014
Shares 177 Value ($000) $5 Avg Close $29.00 Range $26.37 - $32.20
Q1 2014
Shares 177 Value ($000) $5 Avg Close $27.62 Range $22.00 - $35.61
Q4 2013
Shares 354 Value ($000) $9 Avg Close $20.94 Range $15.03 - $25.16
Q3 2013
Shares 354 Value ($000) $6 Avg Close $22.78 Range $17.64 - $25.70
Q2 2013
Shares 354 Value ($000) $8 Avg Close $24.24 Range $18.00 - $27.25
Q1 2013
Shares 354 Value ($000) $8 Avg Close — Range —