IRIDIUM COMMUNICATIONS INC

Ticker: IRDM CUSIP: 46269C102 Class: Common Stock

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q4 2017

Shares 1,000 Value ($000) $12 Avg Close $11.56 Range $9.95 - $12.90

Q3 2017

Shares 1,500 Value ($000) $15 Avg Close $10.37 Range $9.68 - $11.50

Q2 2017

Shares 2,500 Value ($000) $28 Avg Close $10.45 Range $9.40 - $11.58

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	1,000	$12	$11.56	$9.95 - $12.90
Q3 2017	1,500	$15	$10.37	$9.68 - $11.50
Q2 2017	2,500	$28	$10.45	$9.40 - $11.58