INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

Capital Research Global Investors's Holding History (CIK: 0001422848)

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

Q1 2019
Shares 1,236,001 Value ($000) $3,424 Avg Close — Range —
Q4 2018
Shares 3,481,128 Value ($000) $10,861 Avg Close — Range —
Q3 2018
Shares 4,122,128 Value ($000) $20,363 Avg Close — Range —
Q2 2018
Shares 4,122,128 Value ($000) $16,983 Avg Close — Range —
Q1 2018
Shares 4,195,063 Value ($000) $15,857 Avg Close — Range —
Q4 2017
Shares 4,631,414 Value ($000) $18,433 Avg Close — Range —
Q3 2017
Shares 4,526,362 Value ($000) $17,200 Avg Close — Range —
Q2 2017
Shares 4,376,568 Value ($000) $17,025 Avg Close — Range —
Q1 2017
Shares 4,611,000 Value ($000) $25,407 Avg Close — Range —
Q4 2016
Shares 4,611,000 Value ($000) $30,894 Avg Close — Range —
Q3 2016
Shares 4,611,000 Value ($000) $24,208 Avg Close — Range —
Q2 2016
Shares 3,326,172 Value ($000) $18,061 Avg Close — Range —