INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q4 2019
Shares 2,478,693 Value ($000) $2,471 Avg Close — Range —
Q3 2019
Shares 2,478,693 Value ($000) $2,974 Avg Close — Range —
Q2 2019
Shares 2,478,693 Value ($000) $3,916 Avg Close — Range —
Q1 2019
Shares 2,478,693 Value ($000) $6,866 Avg Close — Range —
Q4 2018
Shares 2,478,693 Value ($000) $7,734 Avg Close — Range —
Q3 2018
Shares 2,500,264 Value ($000) $12,351 Avg Close — Range —
Q2 2018
Shares 2,519,369 Value ($000) $10,380 Avg Close — Range —
Q1 2018
Shares 2,994,369 Value ($000) $11,319 Avg Close — Range —
Q4 2017
Shares 2,694,369 Value ($000) $10,724 Avg Close — Range —
Q3 2017
Shares 2,714,917 Value ($000) $10,317 Avg Close — Range —
Q2 2017
Shares 2,614,917 Value ($000) $10,172 Avg Close — Range —
Q1 2017
Shares 2,614,917 Value ($000) $14,408 Avg Close — Range —
Q4 2016
Shares 2,613,959 Value ($000) $17,514 Avg Close — Range —
Q3 2016
Shares 1,848,794 Value ($000) $9,706 Avg Close — Range —
Q2 2016
Shares 1,447,994 Value ($000) $7,863 Avg Close — Range —
Q1 2016
Shares 1,172,258 Value ($000) $5,592 Avg Close — Range —
Q4 2015
Shares 848,201 Value ($000) $4,283 Avg Close — Range —
Q3 2015
Shares 548,201 Value ($000) $2,730 Avg Close — Range —
Q2 2015
Shares 236,400 Value ($000) $2,097 Avg Close — Range —