CLIFFS NAT RES INC

CUSIP: 18683K101 Class: COMMON STOCK

BOKF, NA's Holding History (CIK: 0000009634)

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

Q2 2015
Shares 76,264 Value ($000) $331 Avg Close — Range —
Q1 2014
Shares 28,898 Value ($000) $591 Avg Close — Range —
Q4 2013
Shares 13,160 Value ($000) $345 Avg Close — Range —
Q3 2013
Shares 14,344 Value ($000) $294 Avg Close — Range —