MERRIMACK PHARMACEUTICALS IN - COM NEW (MACK) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2017 to Q1 2025

Type / Class
Equity / COM NEW
Symbol
MACK
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Institutional Holders of MERRIMACK PHARMACEUTICALS IN - COM NEW (MACK) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q1 0 $0 -$370,685 0
2024 Q4 24,500 $370,685 +$370,685 $15.13 1
2024 Q3 0 $0 -$5,320,190 0
2024 Q2 391,191 $5,320,190 -$131,891,967 $15.13 5
2024 Q1 9,284,658 $137,131,700 +$446,835 $14.77 66
2023 Q4 9,310,760 $124,857,594 +$3,426,308 $13.41 66
2023 Q3 8,469,878 $104,433,680 +$5,750,786 $12.33 62
2023 Q2 8,005,305 $98,464,070 +$7,393,962 $12.30 61
2023 Q1 7,401,662 $90,966,088 -$941,758 $12.29 48
2022 Q4 7,553,022 $86,557,269 +$3,470,991 $11.46 43
2022 Q3 8,011,076 $30,044,000 -$1,495,356 $3.75 35
2022 Q2 8,062,505 $47,970,000 +$942,144 $5.95 36
2022 Q1 7,903,678 $49,366,000 +$2,608,673 $6.32 37
2021 Q4 7,496,277 $29,309,062 -$756,610 $3.91 32
2021 Q3 7,676,812 $37,080,000 -$1,098,155 $4.83 33
2021 Q2 7,871,211 $50,264,000 -$387,506 $6.39 39
2021 Q1 7,932,396 $49,785,000 -$284,329 $6.28 40
2020 Q4 7,975,977 $54,954,034 +$6,891,184 $6.89 31
2020 Q3 6,985,409 $27,744,020 +$3,250,783 $4.00 29
2020 Q2 6,156,412 $20,502,017 -$917,404 $3.33 30
2020 Q1 6,456,498 $13,880,011 -$1,303,164 $2.15 29
2019 Q4 6,924,609 $21,810,484 +$983,615 $3.15 40
2019 Q3 6,599,570 $29,667,738 -$127,740 $4.49 37
2019 Q2 6,444,745 $38,988,092 +$8,672,623 $6.05 43
2019 Q1 5,427,848 $37,720,040 +$227,967 $6.95 47
2018 Q4 6,122,668 $23,628,633 -$3,086,729 $3.86 47
2018 Q3 6,270,095 $33,415,836 -$210,288 $5.33 54
2018 Q2 6,333,365 $31,099,933 -$8,735,054 $4.91 64
2018 Q1 7,594,822 $61,184,242 +$3,124,570 $8.05 71
2017 Q4 7,176,969 $73,600,605 +$4,766,747 $10.25 71
2017 Q3 6,640,230 $96,543,193 +$96,536,193 $14.54 66