13G Filing: Cormorant Asset Management and Ignyta Inc. (RXDX)

Page 4 of 10

Page 4 of 10 – SEC Filing

CUSIP NO.
451731103
1
Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only)
Cormorant Asset Management, LLC
2
Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [x]
3
SEC Use Only
4
Citizenship or Place of Organization.
Delaware
Number
of Shares
Beneficially
Owned by
Each
Reporting
Person With
5 Sole Voting Power
0 shares
6 Shared Voting Power
3,000,000 shares
Refer to Item 4 below.
7 Sole Dispositive Power
0 shares
8 Shared Dispositive Power
3,000,000 shares
Refer to Item 4 below.
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,000,000 shares
Refer to Item 4 below.
10
Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)     [ ] N/A
11
Percent of Class Represented by Amount in Row (9)*
5.3%
Refer to Item 4 below.
12
Type of Reporting Person (See Instructions)
OO (Limited Liability Company)

Follow Ignyta Inc. (NASDAQ:RXDX)

Page 4 of 10