Mersana Therapeutics, Inc. (MRSN) [Rocket]

Ownership

Mersana Therapeutics, Inc. (MRSN)

Portfolio as of:

Name	Shares	Change	Value	% Port	% OS	Hist	Date
Bain Capital Life Sciences Investors, LLC	8,663,673	0	28,503,484,000	2.94	7.57	Hist	06/30/2023
BlackRock Inc.	7,963,982	490,160	26,201,501,000	0.00	6.96	Hist	06/30/2023
ORBIMED ADVISORS LLC	7,214,937	-1,796,500	23,737,143,000	0.43	6.31	Hist	06/30/2023
Avoro Capital Advisors LLC	6,375,000	-1,175,000	20,973,750,000	0.28	5.57	Hist	06/30/2023
VANGUARD GROUP INC	5,724,619	1,346,620	18,833,997,000	0.00	5.00	Hist	06/30/2023
Bellevue Group AG	5,219,425	919,806	17,171,908,000	0.24	4.56	Hist	06/30/2023
STATE STREET CORP	4,905,149	-950,912	16,137,940,000	0.00	4.29	Hist	06/30/2023
BALYASNY ASSET MANAGEMENT L.P.	4,839,515	4,839,515	15,922,004,000	0.04	4.23	Hist	06/30/2023
Avidity Partners Management LP	3,790,000	356,767	12,469,100,000	0.44	3.31	Hist	06/30/2023
GOLDMAN SACHS GROUP INC	2,939,540	535,571	12,081,509,000	0.00	2.72	Hist	03/31/2023
Rock Springs Capital Management LP	3,403,133	-700,670	11,196,308,000	0.27	2.98	Hist	06/30/2023
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	2,885,400	2,885,400	9,492,966,000	0.20	2.52	Hist	06/30/2023
Logos Global Management LP	2,800,000	2,800,000	9,212,000,000	1.25	2.45	Hist	06/30/2023
MARSHALL WACE, LLP	2,711,310	187,326	8,920,210,000	0.02	2.37	Hist	06/30/2023
Sarissa Capital Management LP	2,632,900	-1,167,100	8,662,241,000	0.86	2.30	Hist	06/30/2023
Candriam S.C.A.	2,415,477	-547,371	7,946,920,000	0.06	2.11	Hist	06/30/2023
GEODE CAPITAL MANAGEMENT, LLC	2,005,682	206,835	6,598,693,000	0.00	1.75	Hist	06/30/2023
MILLENNIUM MANAGEMENT LLC	1,871,917	-1,791,610	6,158,607,000	0.00	1.64	Hist	06/30/2023
Redmile Group, LLC	1,698,626	1,698,626	5,588,480,000	0.21	1.48	Hist	06/30/2023
FMR LLC	1,479,497	1,355,682	4,867,545,000	0.00	1.29	Hist	06/30/2023
JPMORGAN CHASE & CO	1,443,794	1,322,229	4,750,082,000	0.00	1.26	Hist	06/30/2023
5AM Venture Management, LLC	1,305,000	1,305,000	4,293,450,000	1.07	1.14	Hist	06/30/2023
Nuveen Asset Management, LLC	1,241,591	104	4,084,835,000			Hist	06/30/2023
DEUTSCHE BANK AG\	1,137,743	-9,811	3,743,174,000	0.00	0.99	Hist	06/30/2023
NORTHERN TRUST CORP	1,099,101	214,468	3,616,042,000	0.00	0.96	Hist	06/30/2023
BAKER BROS. ADVISORS LP	1,086,115	1,086,115	3,573,318,000	0.02	0.95	Hist	06/30/2023
SILVERARC CAPITAL MANAGEMENT, LLC	1,000,000	459,941	3,290,000,000	1.02	0.87	Hist	06/30/2023
D. E. Shaw & Co., Inc.	985,739	-1,350,200	3,243,081,000	0.00	0.86	Hist	06/30/2023
Hudson Bay Capital Management LP	962,359	637,359	3,166,161,000	0.02	0.84	Hist	06/30/2023
Decheng Capital Management III (Cayman), LLC	904,268	0	2,975,042,000	0.93	0.79	Hist	06/30/2023
DAFNA Capital Management LLC	810,845	299,982	2,667,680,000	0.73	0.71	Hist	06/30/2023
MORGAN STANLEY	764,511	-993,475	2,515,242,000	0.00	0.67	Hist	06/30/2023
RTW INVESTMENTS, LP	614,838	614,838	2,022,817,000	0.04	0.54	Hist	06/30/2023
TWO SIGMA ADVISERS, LP	578,100	-226,400	1,901,949,000	0.00	0.51	Hist	06/30/2023
AMERIPRISE FINANCIAL INC	572,273	572,273	1,882,778,000	0.00	0.50	Hist	06/30/2023
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