Cascadian Therapeutics Inc. (CASC): Billionaire Seth Klarman’s Baupost Group Reports New Stake

Page 3 of 5 – SEC Filing

CUSIP No.

14740B101

1		NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
		SAK Corporation 04-3334541
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
		(a) o
		(b) x
3		SEC USE ONLY
4		CITIZENSHIP OR PLACE OF ORGANIZATION
		The Commonwealth of Massachusetts
NUMBER OF SHARES BENEFICIALLY  OWNED BY EACH REPORTING PERSON WITH:			5		SOLE VOTING POWER
					0
			6		SHARED VOTING POWER
					25,000,000
			7		SOLE DISPOSITIVE POWER
					0
			8		SHARED DISPOSITIVE POWER
					25,000,000
9		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		25,000,000
10		CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
		o
11		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
		18.49%
12		TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
		HC
		FOOTNOTES