Mersana Therapeutics Inc. (MRSN)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Nextech Invest, Ltd.	482,689.84	$3,571,905	0.68%
2.	Bain Capital Life Sciences Investors, Llc	346,546.92	$2,564,447	0.32%
3.	Vanguard Group Inc	307,135.64	$2,272,803	0%
4.	Blackrock, Inc.	150,536.76	$1,113,973	0%
5.	Goldman Sachs Group Inc	57,350.4	$424,393	0%