INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q4 2019
Shares 511,048 Value ($000) $510 Avg Close — Range —
Q3 2019
Shares 534,214 Value ($000) $641 Avg Close — Range —
Q2 2019
Shares 626,792 Value ($000) $990 Avg Close — Range —
Q1 2019
Shares 613,124 Value ($000) $1,698 Avg Close — Range —
Q4 2018
Shares 604,592 Value ($000) $1,886 Avg Close — Range —
Q3 2018
Shares 466,603 Value ($000) $2,305 Avg Close — Range —
Q2 2018
Shares 463,257 Value ($000) $1,909 Avg Close — Range —
Q1 2018
Shares 465,848 Value ($000) $1,760 Avg Close — Range —
Q4 2017
Shares 463,280 Value ($000) $1,844 Avg Close — Range —
Q3 2017
Shares 459,039 Value ($000) $1,744 Avg Close — Range —
Q2 2017
Shares 467,479 Value ($000) $1,819 Avg Close — Range —
Q1 2017
Shares 289,954 Value ($000) $1,597 Avg Close — Range —
Q4 2016
Shares 290,283 Value ($000) $1,945 Avg Close — Range —
Q3 2016
Shares 287,714 Value ($000) $1,510 Avg Close — Range —
Q2 2016
Shares 289,006 Value ($000) $1,570 Avg Close — Range —
Q1 2016
Shares 153,782 Value ($000) $733 Avg Close — Range —
Q4 2015
Shares 148,753 Value ($000) $751 Avg Close — Range —
Q3 2015
Shares 147,157 Value ($000) $732 Avg Close — Range —
Q2 2015
Shares 107,463 Value ($000) $953 Avg Close — Range —
Q1 2015
Shares 106,090 Value ($000) $739 Avg Close — Range —
Q4 2014
Shares 105,641 Value ($000) $551 Avg Close — Range —
Q3 2014
Shares 30,146 Value ($000) $354 Avg Close — Range —