CIGNA CORPORATION

CUSIP: 125509109 Class: COM

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q3 2018
Shares 72,528 Value ($000) $15,104 Avg Close — Range —
Q2 2018
Shares 72,028 Value ($000) $12,241 Avg Close — Range —
Q1 2018
Shares 71,528 Value ($000) $11,998 Avg Close — Range —
Q4 2017
Shares 72,228 Value ($000) $14,669 Avg Close — Range —
Q3 2017
Shares 76,428 Value ($000) $14,287 Avg Close — Range —
Q2 2017
Shares 84,128 Value ($000) $14,082 Avg Close — Range —
Q1 2017
Shares 84,428 Value ($000) $12,368 Avg Close — Range —
Q4 2016
Shares 83,928 Value ($000) $11,195 Avg Close — Range —
Q3 2016
Shares 89,580 Value ($000) $11,674 Avg Close — Range —
Q2 2016
Shares 89,080 Value ($000) $11,401 Avg Close — Range —
Q1 2016
Shares 88,080 Value ($000) $12,088 Avg Close — Range —
Q4 2015
Shares 88,080 Value ($000) $12,889 Avg Close — Range —
Q3 2015
Shares 92,980 Value ($000) $12,554 Avg Close — Range —
Q2 2015
Shares 99,780 Value ($000) $16,164 Avg Close — Range —
Q1 2015
Shares 99,680 Value ($000) $12,903 Avg Close — Range —
Q4 2014
Shares 107,780 Value ($000) $11,092 Avg Close — Range —
Q3 2014
Shares 108,180 Value ($000) $9,811 Avg Close — Range —
Q2 2014
Shares 110,080 Value ($000) $10,124 Avg Close — Range —
Q1 2014
Shares 111,680 Value ($000) $9,351 Avg Close — Range —
Q4 2013
Shares 112,380 Value ($000) $9,831 Avg Close — Range —
Q3 2013
Shares 115,080 Value ($000) $8,845 Avg Close — Range —
Q2 2013
Shares 115,880 Value ($000) $8,400 Avg Close — Range —