BlackRock’s Mersana Therapeutics MRSN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | – | Sell |
-69,210
| Closed | -$2M | – | 5760 |
|
|
2025
Q4 | $2M | Sell |
69,210
-26,983
| -28% | -$512K | ﹤0.01% | 4115 |
|
|
2025
Q3 | $746K | Sell |
96,193
-54,344
| -36% | -$408K | ﹤0.01% | 4376 |
|
|
2025
Q2 | $1.11M | Sell |
150,537
-182,510
| -55% | -$1.6M | ﹤0.01% | 4215 |
|
|
2025
Q1 | $2.87M | Sell |
333,047
-35,160
| -10% | -$543K | ﹤0.01% | 3878 |
|
|
2024
Q4 | $13.2M | Buy |
368,207
+23,333
| +7% | +$1.21M | ﹤0.01% | 3279 |
|
|
2024
Q3 | $16.3M | Buy |
344,874
+9,518
| +3% | +$420K | ﹤0.01% | 3166 |
|
|
2024
Q2 | $16.9M | Buy |
335,356
+11,527
| +4% | +$833K | ﹤0.01% | 3082 |
|
|
2024
Q1 | $36.3M | Buy |
323,829
+10,058
| +3% | +$1,000K | ﹤0.01% | 2638 |
|
|
2023
Q4 | $18.2M | Sell |
313,771
-5,135
| -2% | -$207K | ﹤0.01% | 3063 |
|
|
2023
Q3 | $10.1M | Buy |
318,906
+347
| +0.1% | +$16.5K | ﹤0.01% | 3325 |
|
|
2023
Q2 | $26.2M | Buy |
318,559
+19,606
| +7% | +$2.87M | ﹤0.01% | 2870 |
|
|
2023
Q1 | $30.7M | Sell |
298,953
-724
| -0.2% | -$102K | ﹤0.01% | 2742 |
|
|
2022
Q4 | $43.9M | Buy |
299,677
+16,154
| +6% | +$2.73M | ﹤0.01% | 2563 |
|
|
2022
Q3 | $47.9M | Sell |
283,523
-71,718
| -20% | -$11.7M | ﹤0.01% | 2465 |
|
|
2022
Q2 | $41M | Buy |
355,241
+50,193
| +16% | +$4.72M | ﹤0.01% | 2624 |
|
|
2022
Q1 | $30.4M | Buy |
305,048
+5,879
| +2% | +$687K | ﹤0.01% | 2903 |
|
|
2021
Q4 | $46.5M | Sell |
299,169
-53,124
| -15% | -$10.3M | ﹤0.01% | 2702 |
|
|
2021
Q3 | $83.1M | Sell |
352,293
-615
| -0.2% | -$180K | ﹤0.01% | 2334 |
|
|
2021
Q2 | $120M | Buy |
352,908
+32,825
| +10% | +$12.4M | ﹤0.01% | 2144 |
|
|
2021
Q1 | $129M | Buy |
320,083
+571
| +0.2% | +$277K | ﹤0.01% | 2032 |
|
|
2020
Q4 | $213M | Buy |
319,512
+29,432
| +10% | +$16.4M | 0.01% | 1573 |
|
|
2020
Q3 | $135M | Buy |
290,080
+4,570
| +2% | +$2.31M | 0.01% | 1689 |
|
|
2020
Q2 | $167M | Buy |
285,510
+154,051
| +117% | +$52.6M | 0.01% | 1491 |
|
|
2020
Q1 | $19.2M | Buy |
131,459
+32,846
| +33% | +$5.74M | ﹤0.01% | 2624 |
|
|
2019
Q4 | $14.1M | Buy |
98,613
+1,343
| +1% | +$98.2K | ﹤0.01% | 3072 |
|
|
2019
Q3 | $3.84M | Buy |
97,270
+1,651
| +2% | +$120K | ﹤0.01% | 3556 |
|
|
2019
Q2 | $9.68M | Buy |
95,619
+59,705
| +166% | +$7.03M | ﹤0.01% | 3272 |
|
|
2019
Q1 | $4.72M | Buy |
35,914
+4,669
| +15% | +$587K | ﹤0.01% | 3430 |
|
|
2018
Q4 | $3.19M | Sell |
31,245
-9,757
| -24% | -$1.54M | ﹤0.01% | 3529 |
|
|
2018
Q3 | $10.3M | Buy |
41,002
+748
| +2% | +$251K | ﹤0.01% | 3226 |
|
|
2018
Q2 | $18M | Buy |
40,254
+7,534
| +23% | +$3.31M | ﹤0.01% | 2924 |
|
|
2018
Q1 | $12.9M | Buy |
32,720
+9,628
| +42% | +$3.8M | ﹤0.01% | 2997 |
|
|
2017
Q4 | $9.48M | Buy |
23,092
+12,541
| +119% | +$5.47M | ﹤0.01% | 3172 |
|
|
2017
Q3 | $4.56M | Buy |
+10,551
| New | +$4.16M | ﹤0.01% | 3489 |
|