INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q4 2019
Shares 1,715,414 Value ($000) $1,710 Avg Close — Range —
Q3 2019
Shares 1,734,852 Value ($000) $2,082 Avg Close — Range —
Q2 2019
Shares 1,913,067 Value ($000) $3,022 Avg Close — Range —
Q1 2019
Shares 1,929,045 Value ($000) $5,343 Avg Close — Range —
Q4 2018
Shares 2,074,387 Value ($000) $6,472 Avg Close — Range —
Q3 2018
Shares 1,414,077 Value ($000) $6,985 Avg Close — Range —
Q2 2018
Shares 1,391,575 Value ($000) $5,734 Avg Close — Range —
Q1 2018
Shares 1,268,924 Value ($000) $4,797 Avg Close — Range —
Q4 2017
Shares 1,116,741 Value ($000) $4,445 Avg Close — Range —
Q3 2017
Shares 1,103,880 Value ($000) $4,195 Avg Close — Range —
Q2 2017
Shares 1,341,715 Value ($000) $5,219 Avg Close — Range —
Q1 2017
Shares 1,262,680 Value ($000) $6,957 Avg Close — Range —
Q4 2016
Shares 1,141,025 Value ($000) $7,645 Avg Close — Range —
Q3 2016
Shares 1,100,050 Value ($000) $5,775 Avg Close — Range —
Q2 2016
Shares 1,061,618 Value ($000) $5,764 Avg Close — Range —
Q1 2016
Shares 523,529 Value ($000) $2,497 Avg Close — Range —
Q4 2015
Shares 459,404 Value ($000) $2,320 Avg Close — Range —
Q3 2015
Shares 348,760 Value ($000) $1,736 Avg Close — Range —
Q2 2015
Shares 330,296 Value ($000) $2,930 Avg Close — Range —
Q1 2015
Shares 315,694 Value ($000) $2,200 Avg Close — Range —
Q4 2014
Shares 298,252 Value ($000) $1,557 Avg Close — Range —
Q3 2014
Shares 188,989 Value ($000) $2,221 Avg Close — Range —