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Livermore
Livermore
ZHEN

State Street Corp

SEC CIK
0000093751
Latest filing
Sep 22, 2026

MRSN holding history

Mersana Therapeutics, Inc. in every 13F filed by State Street Corp, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MRSN overviewAll 13F holders of MRSNFull Q2 2026 holdings

Shares (Q1 2026)
0
Sold out in Q1 2026
Value
$0
% of portfolio
0.0%
Quarters held
20
Since Q1 2021
Holdings of MRSN by State Street Corp, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q1 20260$00.0%−19,543−100.0%Sold outHolders
Q4 202519,543$565.4K<0.1%−10,300−34.5%ReducedHolders
Q3 202529,843$231.6K<0.1%+11,759+65.0%AddedConverted for a 1-for-25 splitHolders
Q2 2025452,110$133.8K<0.1%−2,151,758−82.6%ReducedHolders
Q1 20252,603,868$896.3K<0.1%−161,027−5.8%ReducedHolders
Q4 20242,764,895$3.95M<0.1%+39,501+1.4%AddedHolders
Q3 20242,725,394$5.15M<0.1%+43,339+1.6%AddedHolders
Q2 20242,682,055$5.39M<0.1%−2,815,388−51.2%ReducedHolders
Q1 20245,497,443$24.6M<0.1%+3,168,009+136.0%AddedHolders
Q4 20232,329,434$5.40M<0.1%+16,692+0.7%AddedHolders
Q3 20232,312,742$2.94M<0.1%−2,592,407−52.9%ReducedHolders
Q2 20234,905,149$16.1M<0.1%−1,507,073−23.5%ReducedHolders
Q1 20236,412,222$26.4M<0.1%+556,161+9.5%AddedHolders
Q4 20225,856,061$34.3M<0.1%+1,797,041+44.3%AddedHolders
Q3 20224,059,020$27.4M<0.1%+2,438,690+150.5%AddedHolders
Q2 20221,620,330$7.49M<0.1%+268,180+19.8%AddedHolders
Q1 20221,352,150$5.39M<0.1%−2,868,407−68.0%ReducedHolders
Q4 20214,220,557$26.3M<0.1%+130,361+3.2%AddedHolders
Q3 20214,090,196$38.6M<0.1%+843,673+26.0%AddedHolders
Q2 20213,246,523$44.1M<0.1%−499,477−13.3%ReducedHolders
Q1 20213,746,000$60.6M<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.