IRIDIUM COMMUNICATIONS INC

Ticker: IRDM CUSIP: 46269C102 Class: Common Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q1 2017

Shares 188,539 Value ($000) $1,819 Avg Close $9.54 Range $7.80 - $11.54

Q4 2016

Shares 152,508 Value ($000) $1,464 Avg Close $8.92 Range $7.50 - $11.15

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	188,539	$1,819	$9.54	$7.80 - $11.54
Q4 2016	152,508	$1,464	$8.92	$7.50 - $11.15