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MERRIMACK PHARMACEUTICALS INC (MACK)
All trades on this company by insiders. Hover over bubbles for specific trade details. Drag along the graph for custom price change. Green - Buy, Red - Sell, Orange - Congress Member.
Healthcare
Biotechnology
DATE
INSIDER
COMPANY
OWNED SHARES
SHARES TRADED
PRICE
NET TOTAL
BUY
26 Dec 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
534,008
+10%
49,550
$13.15
$651,754.10
BUY
14 Nov 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,658,981
+3%
50,170
$12.50
$627,125.00
BUY
8 Nov 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,577,704
+1%
23,798
$12.16
$289,318.84
BUY
10 Aug 2023
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
133,105
+3%
4,000
$12.48
$49,904.40
BUY
7 Aug 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,565,111
+16%
221,550
$12.00
$2,658,741.00
BUY
21 Mar 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,412,044
+12%
160,590
$11.52
$1,849,996.90
BUY
30 Jan 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,284,635
+2%
26,940
$11.36
$306,067.94
BUY
30 Jan 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,284,635
+2%
26,967
$11.36
$306,374.60
BUY
27 Jan 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,263,103
+1%
21,875
$11.40
$249,298.42
BUY
12 Jan 2023
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,119,586
+9%
100,000
$11.90
$1,190,000.00
BUY
6 Jan 2023
Radeljevic Ana
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
4,156
+100%
4,156
$12.03
$49,996.68
BUY
3 Jan 2023
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,245,638
+2%
30,632
$11.33
$347,158.60
BUY
30 Dec 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,019,586
+0%
6,600
$11.24
$74,178.52
BUY
29 Dec 2022
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,223,225
+26%
259,936
$10.67
$2,774,715.80
BUY
13 Jul 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
754,108
+0%
3,095
$5.89
$18,226.77
BUY
11 Jul 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
751,013
+0%
3,516
$5.89
$20,697.15
BUY
7 Jul 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
747,497
+0%
2,478
$5.99
$14,835.15
BUY
30 Jun 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
745,019
+0%
1,550
$5.76
$8,921.49
BUY
23 Jun 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
743,469
+0%
1,500
$5.99
$8,990.00
BUY
16 Jun 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,012,986
+0%
1,420
$5.78
$8,205.24
BUY
14 Jun 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,012,174
+2%
23,838
$5.20
$123,879.66
BUY
10 Jun 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
998,538
+1%
16,085
$5.06
$81,361.16
BUY
9 Jun 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
131,105
+3%
4,452
$5.15
$22,918.01
BUY
7 Jun 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
126,653
+0%
649
$5.10
$3,310.12
BUY
24 May 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
126,004
+1%
2,455
$5.09
$12,494.66
BUY
19 May 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
123,549
+0%
512
$5.04
$2,581.91
BUY
17 May 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
123,037
+4%
5,225
$5.08
$26,553.51
BUY
12 May 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
117,812
+2%
2,474
$5.04
$12,470.77
BUY
21 Apr 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
115,338
+4%
5,000
$6.00
$30,001.00
BUY
30 Mar 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
110,338
+0%
461
$6.18
$2,851.21
BUY
28 Mar 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
109,877
+4%
5,000
$6.16
$30,821.50
BUY
22 Mar 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
104,877
+0%
400
$6.11
$2,445.52
BUY
15 Mar 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
104,477
+4%
4,649
$6.14
$28,555.55
BUY
11 Mar 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
99,828
+11%
10,000
$6.05
$60,527.00
BUY
18 Feb 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
89,828
+3%
3,351
$5.96
$19,969.62
BUY
16 Feb 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
86,477
+17%
12,945
$6.17
$79,857.19
BUY
14 Feb 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
73,532
+2%
1,923
$5.97
$11,486.28
BUY
28 Jan 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
989,337
+1%
14,200
$4.53
$64,278.74
BUY
27 Jan 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
71,609
+0%
673
$4.60
$3,095.80
BUY
26 Jan 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
712,294
+5%
35,800
$4.92
$176,259.48
BUY
26 Jan 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
70,936
+4%
3,100
$4.56
$14,121.12
BUY
24 Jan 2022
Nielsen Ulrik B.
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
36,968
+62%
14,287
$4.24
$60,629.74
BUY
21 Jan 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
67,836
+15%
9,105
$4.40
$40,050.81
BUY
18 Jan 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
58,731
+9%
5,000
$4.54
$22,689.50
BUY
13 Jan 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
53,731
+22%
10,000
$4.47
$44,674.00
BUY
11 Jan 2022
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
43,731
+29%
10,000
$4.18
$41,798.50
BUY
10 Jan 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
987,118
+12%
105,949
$3.98
$421,191.75
BUY
7 Jan 2022
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
901,857
+0%
8,780
$3.82
$33,523.80
SELL
31 Dec 2021
RAY RUSSELL T
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
0
-100%
1,000
$3.84
$3,839.80
BUY
14 Apr 2021
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
947,396
+5%
47,300
$6.63
$313,736.20
BUY
13 Apr 2021
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
906,591
+1%
9,874
$6.26
$61,779.65
BUY
12 Apr 2021
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
896,717
+2%
23,629
$6.06
$143,194.11
BUY
12 Apr 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
33,731
+2%
973
$6.07
$5,905.14
BUY
9 Apr 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
32,758
+3%
1,200
$6.10
$7,320.00
BUY
7 Apr 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
31,558
+7%
2,127
$6.19
$13,166.13
BUY
31 Mar 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
29,431
+1%
500
$6.19
$3,094.50
BUY
25 Mar 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
28,931
+0%
200
$6.13
$1,226.00
BUY
23 Mar 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
28,731
+42%
8,627
$6.39
$55,144.72
BUY
16 Mar 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
20,104
+33%
5,000
$6.79
$33,956.00
BUY
23 Feb 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
15,104
+49%
5,000
$7.20
$36,004.50
BUY
12 Feb 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
10,104
+97%
5,000
$7.47
$37,342.00
BUY
10 Feb 2021
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
5,104
+100%
5,104
$7.75
$39,554.31
BUY
1 Dec 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
896,642
+3%
29,776
$4.00
$119,077.20
BUY
24 Nov 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
873,088
+8%
69,088
$3.65
$252,171.22
BUY
24 Nov 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
879,283
+8%
69,087
$3.65
$252,167.56
BUY
12 Nov 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
822,014
+7%
56,490
$3.65
$206,188.50
BUY
12 Nov 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
839,005
+7%
56,490
$3.65
$205,911.70
BUY
13 Aug 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
820,055
+0%
609
$3.50
$2,131.50
BUY
13 Aug 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
806,071
+0%
608
$3.50
$2,128.00
BUY
11 Aug 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
243,212
+7%
16,030
$3.46
$55,423.17
BUY
11 Aug 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
805,717
+2%
16,042
$3.46
$55,466.01
BUY
22 Jul 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
755,543
+30%
177,274
$3.11
$552,086.40
BUY
22 Jul 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
739,759
+31%
177,274
$3.11
$552,086.56
SELL
22 Jul 2020
CROCKER GARY L
See Remarks, Director, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
0
-100%
193,509
$3.08
$596,464.90
BUY
22 Apr 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
692,768
+0%
3,749
$3.25
$12,184.25
BUY
20 Apr 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
693,014
+0%
3,749
$3.25
$12,184.25
BUY
7 Apr 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
689,019
+0%
5,899
$3.03
$17,884.59
BUY
7 Apr 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
690,821
+0%
5,899
$3.03
$17,884.59
BUY
3 Apr 2020
Andersen Eric
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
683,120
+2%
16,793
$2.74
$46,032.05
BUY
3 Apr 2020
Levy Noah G.
Director, See remarks
MERRIMACK PHARMACEUTICALS INC
(MACK)
687,370
+2%
16,792
$2.74
$45,981.75
BUY
16 Jul 2019
Aryeh Jason
10% Owner, See Explanation of Responses
MERRIMACK PHARMACEUTICALS INC
(MACK)
3,802
+11%
383.842
$4.28
$1,642.88
BUY
11 Jul 2019
Aryeh Jason
10% Owner, See Explanation of Responses
MERRIMACK PHARMACEUTICALS INC
(MACK)
2,500
+228%
4,448.5
$4.47
$19,895.00
BUY
28 Jun 2019
JFL Capital Management, LLC
10% Owner, See Explanation of Responses
MERRIMACK PHARMACEUTICALS INC
(MACK)
510,152
+14%
63,916.05
$4.66
$297,855.90
BUY
15 Apr 2019
22NW, LP
10% Owner, See Explanation of Responses
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,241,896
+7%
84,851.96
$4.61
$391,323.20
BUY
5 Apr 2019
JFL Capital Management, LLC
10% Owner, See Explanation of Responses
MERRIMACK PHARMACEUTICALS INC
(MACK)
710,008
+7%
47,380.34
$4.63
$219,399.31
BUY
5 Apr 2019
22NW, LP
10% Owner, See Explanation of Responses
MERRIMACK PHARMACEUTICALS INC
(MACK)
1,175,136
+9%
105,331.586
$4.72
$496,794.88
SELL
13 Sep 2017
Nielsen Ulrik B.
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
22,681
-30%
10,035.816
$11.20
$112,357.08
SELL
11 Sep 2017
Nielsen Ulrik B.
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
22,681
-54%
27,397.676
$11.33
$310,407.75
SELL
12 May 2017
Drummond Daryl C
Head of Research, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
101,731
-0%
520.729
$29.27
$15,240.84
SELL
25 Jul 2016
Schoeberl Birgit M.
Head of Discovery, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
65,657
-8%
6,355.001
$43.27
$275,000.00
BUY
17 Mar 2016
PORTER MICHAEL E
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
754,448
+0%
635.5
$56.65
$36,000.00
BUY
15 Mar 2016
PORTER MICHAEL E
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
749,448
+0%
635.5
$60.19
$38,250.00
BUY
8 Mar 2016
PORTER MICHAEL E
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
744,448
+0%
1,271
$55.78
$70,900.00
BUY
2 Mar 2016
PORTER MICHAEL E
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
734,448
+0%
1,906.5
$50.28
$95,850.00
BUY
29 Feb 2016
Lee Vivian S
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
65,000
+7%
4,448.5
$43.27
$192,500.00
BUY
29 Feb 2016
McClements William M.
Head of Corporate Operations, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
14,072
+1%
254.2
$45.00
$11,440.00
BUY
29 Feb 2016
PORTER MICHAEL E
Director
MERRIMACK PHARMACEUTICALS INC
(MACK)
719,448
+0%
2,542
$48.03
$122,100.00
SELL
5 Jan 2016
Stewart Edward J.
Head of Commercial, Officer
MERRIMACK PHARMACEUTICALS INC
(MACK)
21,385
-2%
508.4
$62.94
$32,000.00
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