INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

VIKING FUND MANAGEMENT LLC's Holding History (CIK: 0001169069)

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

Q4 2019
Shares 520,000 Value ($000) $518 Avg Close — Range —
Q3 2019
Shares 520,000 Value ($000) $624 Avg Close — Range —
Q2 2019
Shares 520,000 Value ($000) $822 Avg Close — Range —
Q1 2019
Shares 520,000 Value ($000) $1,440 Avg Close — Range —
Q4 2018
Shares 520,000 Value ($000) $1,622 Avg Close — Range —
Q3 2018
Shares 520,000 Value ($000) $2,569 Avg Close — Range —
Q2 2018
Shares 520,000 Value ($000) $2,142 Avg Close — Range —
Q1 2018
Shares 520,000 Value ($000) $1,966 Avg Close — Range —
Q4 2017
Shares 520,000 Value ($000) $2,070 Avg Close — Range —
Q3 2017
Shares 520,000 Value ($000) $1,976 Avg Close — Range —
Q2 2017
Shares 520,000 Value ($000) $2,023 Avg Close — Range —
Q1 2017
Shares 510,000 Value ($000) $2,810 Avg Close — Range —
Q4 2016
Shares 500,000 Value ($000) $3,350 Avg Close — Range —
Q3 2016
Shares 390,000 Value ($000) $2,048 Avg Close — Range —