INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC's Holding History (CIK: 0001629649)

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

Q4 2019
Shares 831,032 Value ($000) $828 Avg Close — Range —
Q3 2019
Shares 831,032 Value ($000) $997 Avg Close — Range —
Q2 2019
Shares 831,032 Value ($000) $1,313 Avg Close — Range —
Q1 2019
Shares 831,032 Value ($000) $2,302 Avg Close — Range —
Q4 2018
Shares 831,032 Value ($000) $2,593 Avg Close — Range —
Q3 2018
Shares 831,032 Value ($000) $4,105 Avg Close — Range —
Q2 2018
Shares 831,032 Value ($000) $3,424 Avg Close — Range —
Q1 2018
Shares 831,032 Value ($000) $3,141 Avg Close — Range —
Q4 2017
Shares 831,032 Value ($000) $3,308 Avg Close — Range —
Q3 2017
Shares 831,032 Value ($000) $3,158 Avg Close — Range —
Q2 2017
Shares 831,032 Value ($000) $3,233 Avg Close — Range —
Q1 2017
Shares 831,032 Value ($000) $4,579 Avg Close — Range —
Q4 2016
Shares 831,032 Value ($000) $5,568 Avg Close — Range —
Q3 2016
Shares 831,032 Value ($000) $4,363 Avg Close — Range —
Q2 2016
Shares 831,032 Value ($000) $4,513 Avg Close — Range —
Q1 2016
Shares 831,032 Value ($000) $3,964 Avg Close — Range —
Q4 2015
Shares 831,032 Value ($000) $4,197 Avg Close — Range —
Q3 2015
Shares 831,032 Value ($000) $4,139 Avg Close — Range —
Q2 2015
Shares 831,032 Value ($000) $7,371 Avg Close — Range —