IRIDIUM COMMUNICATIONS INC

Ticker: IRDM CUSIP: 46269C102 Class: Common Stock

South Dakota Investment Council's Holding History (CIK: 0001538846)

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

Q3 2018

Shares 71,048 Value ($000) $1,599 Avg Close $19.42 Range $15.90 - $22.50

Q2 2018

Shares 171,663 Value ($000) $2,764 Avg Close $13.60 Range $10.95 - $17.95

Q1 2018

Shares 171,663 Value ($000) $1,931 Avg Close $11.97 Range $10.75 - $13.25

Q4 2017

Shares 171,663 Value ($000) $2,026 Avg Close $11.56 Range $9.95 - $12.90

Q3 2017

Shares 179,363 Value ($000) $1,847 Avg Close $10.37 Range $9.68 - $11.50

Q2 2017

Shares 148,200 Value ($000) $1,638 Avg Close $10.45 Range $9.40 - $11.58

Q1 2017

Shares 148,200 Value ($000) $1,430 Avg Close $9.54 Range $7.80 - $11.54

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	71,048	$1,599	$19.42	$15.90 - $22.50
Q2 2018	171,663	$2,764	$13.60	$10.95 - $17.95
Q1 2018	171,663	$1,931	$11.97	$10.75 - $13.25
Q4 2017	171,663	$2,026	$11.56	$9.95 - $12.90
Q3 2017	179,363	$1,847	$10.37	$9.68 - $11.50
Q2 2017	148,200	$1,638	$10.45	$9.40 - $11.58
Q1 2017	148,200	$1,430	$9.54	$7.80 - $11.54