Instuitional Investor - Polaris Venture Management Co Iv Llc

13F Holdings

Filing Period:

No.	Security	Ticker	Shares	Value	% Port
1.	Acceleron Pharma Inc	XLRN	1,480,060	$53,563,000	85.85%
2.	Alimera Sciences Inc	ALIM	209,890.33,333,333	$4,691,000	7.51%
3.	Pulmatrix Inc.	PULM	7,959.31	$2,627,000	4.21%
4.	Cerulean Pharma Inc		1,437,441	$1,505,000	2.41%