SPARK ENERGY INC

CUSIP: 846511103 Class: COM

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q3 2017
Shares 40,540 Value ($000) $608 Avg Close — Range —
Q2 2017
Shares 40,540 Value ($000) $762 Avg Close — Range —