13D Filing: Casdin Capital and Genmark Diagnostics Inc. (GNMK)

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Page 2 of 11 – SEC Filing

CUSIP No. 372309104
1. NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Casdin Capital, LLC
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a)  [_]
(b)  [_]
3. SEC USE ONLY
4. SOURCE OF FUNDS
AF
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
[_]
6. CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON
7. SOLE VOTING POWER
0
8. SHARED VOTING POWER
3,850,000
9. SOLE DISPOSITIVE POWER
0
10. SHARED DISPOSITIVE POWER
3,850,000
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,850,000
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES  
[_]
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
7.0%
14. TYPE OF REPORTING PERSON
IA

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