TGS NOPEC GEOPHYSICAL CO ASA

CUSIP: B15SLC4 Class: COM

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q3 2013
Shares 3,317,860 Value ($000) $97,645 Avg Close — Range —
Q2 2013
Shares 3,340,711 Value ($000) $96,566 Avg Close — Range —