Insider Trading & Ownership - MERRIMACK PHARMACEUTICALS INC (MACK)

Real time insider trading transaction history:

  • Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
  • Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Insider Trading Transactions for MERRIMACK PHARMACEUTICALS INC
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Common stock purchase or sale:
Transaction
Date
Reported
DateTime
CompanySymbolInsider
Relationship
Shares
Traded
Average
Price
Total
Amount
Shares
Owned
Filing
2023-12-26
Purchase
2023-12-28
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
49,550$13.15$651,754534,008
(Indirect)
View
2023-12-07
Purchase
2023-12-11
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
101,050$12.85$1,298,472484,458
(Indirect)
View
2023-11-17
Purchase
2023-11-20
6:59 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
300$12.5$3,750459,792
(Indirect)
View
2023-11-14
Purchase
2023-11-16
5:09 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
50,170$12.5$627,125459,727
(Indirect)
View
2023-11-10
Purchase
2023-11-14
4:48 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
53,632$12.34$661,883448,840
(Indirect)
View
2023-11-08
Purchase
2023-11-13
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
23,798$12.16$289,319437,202
(Indirect)
View
2023-08-10
Purchase
2023-08-14
4:06 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
4,000$12.48$49,904133,105
(Indirect)
View
2023-08-07
Purchase
2023-08-09
4:06 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
221,550$12$2,658,741425,997
(Indirect)
View
2023-03-21
Purchase
2023-03-22
4:06 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
160,590$11.52$1,849,997357,514
(Indirect)
View
2023-01-30
Purchase(A)
2023-03-01
5:04 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
26,967$11.36$306,375324,333
(Indirect)
View
2023-01-30
Purchase
2023-02-01
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
26,940$11.36$306,068324,306
(Indirect)
View
2023-01-27
Purchase
2023-01-31
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
21,875$11.4$249,298318,898
(Indirect)
View
2023-01-12
Purchase
2023-01-17
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
100,000$11.9$1,190,0001,119,586
(Indirect)
View
2023-01-06
Purchase
2023-01-09
4:06 pm
MERRIMACK PHARMACEUTICALS INCMACKRadeljevic Ana
Director
4,156$12.03$49,9974,156
(Direct)
View
2022-12-30
Purchase
2023-01-04
4:06 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
6,600$11.24$74,1791,019,586
(Indirect)
View
2023-01-03
Purchase
2023-01-04
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
30,632$11.33$347,159314,488
(Indirect)
View
2022-12-29
Purchase
2023-01-03
4:16 pm
MERRIMACK PHARMACEUTICALS INCMACKAndersen Eric
Western Standard LLC
WESTERN STANDARD PARTNERS LP
Western Standard Partners QP L.P.
See remarks
259,936$10.67$2,774,716306,269
(Indirect)
View
2022-07-13
Purchase
2022-07-15
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
3,095$5.8891$18,227754,108
(Indirect)
View
2022-07-11
Purchase
2022-07-13
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
3,516$5.8866$20,697751,013
(Indirect)
View
2022-07-07
Purchase
2022-07-11
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
2,478$5.9867$14,835747,497
(Indirect)
View
2022-06-30
Purchase
2022-07-05
4:06 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
1,550$5.7558$8,921745,019
(Indirect)
View
2022-06-23
Purchase
2022-06-27
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
1,500$5.9933$8,990743,469
(Indirect)
View
2022-06-16
Purchase
2022-06-21
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
1,420$5.7783$8,205741,969
(Indirect)
View
2022-06-14
Purchase
2022-06-16
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
23,838$5.1967$123,880741,361
(Indirect)
View
2022-06-10
Purchase
2022-06-14
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKLevy Noah G.
Newtyn Management LLC
NEWTYN PARTNERS LP
NEWTYN TE PARTNERS LP
Newtyn Capital Partners LP
Ledo Capital LLC
See remarks
16,085$5.0582$81,361731,159
(Indirect)
View
2022-06-09
Purchase
2022-06-13
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
4,452$5.1478$22,918131,105
(Indirect)
View
2022-06-07
Purchase
2022-06-09
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
649$5.1003$3,310126,653
(Indirect)
View
2022-05-24
Purchase
2022-05-26
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
2,455$5.0895$12,495126,004
(Indirect)
View
2022-05-19
Purchase
2022-05-23
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
512$5.0428$2,582123,549
(Indirect)
View
2022-05-17
Purchase
2022-05-19
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
5,225$5.082$26,554123,037
(Indirect)
View
2022-05-12
Purchase
2022-05-16
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
2,474$5.0407$12,471117,812
(Indirect)
View
2022-04-21
Purchase
2022-04-25
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
5,000$6.0002$30,001115,338
(Indirect)
View
2022-03-30
Purchase
2022-04-01
4:05 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
461$6.1848$2,851110,338
(Indirect)
View
2022-03-28
Purchase
2022-03-29
5:30 pm
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
5,000$6.1643$30,822109,877
(Indirect)
View

Stock options: Exercise, Award, Grant, Conversion
Transaction
Date
Reported
DateTime
Exercisable
Expiration
CompanySymnbolInsider
Relationship
Shares
Traded
Conversion
Price
Shares
Owned
Filing
2023-06-06
Option Award
2023-06-08
4:15 pm
N/A
2033-06-05
MERRIMACK PHARMACEUTICALS INCMACKRadeljevic Ana
Director
7,000$014,000
(Direct)
View
2023-06-06
Option Award
2023-06-08
4:08 pm
N/A
2033-06-05
MERRIMACK PHARMACEUTICALS INCMACKNielsen Ulrik B.
Director
7,000$028,000
(Direct)
View
2023-06-06
Option Award
2023-06-08
4:05 pm
N/A
2033-06-05
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
8,000$032,000
(Direct)
View

Ownership
2022-06-17
10:06 am
N/A
2032-06-05
MERRIMACK PHARMACEUTICALS INCMACKRadeljevic Ana
Director
0$07,000
(Direct)
View
2022-06-06
Option Award
2022-06-07
4:05 pm
N/A
2032-06-05
MERRIMACK PHARMACEUTICALS INCMACKNielsen Ulrik B.
Director
7,000$021,000
(Direct)
View
2022-06-06
Option Award
2022-06-07
4:05 pm
N/A
2032-06-05
MERRIMACK PHARMACEUTICALS INCMACKCROCKER GARY L
See Remarks
8,000$024,000
(Direct)
View
(A) Indicate amendment filing.
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