Insiders · MACK

MACK insider transactions

Merrimack Pharmaceuticals Inc. (MACK) Form 4 insider transactions - real-time wire coverage of every officer, director, and 10% owner trade.

MACK insiders

Everyone who has filed a Form 3, 4, 5 or 144 at Merrimack Pharmaceuticals Inc., latest first. Follow anyone to get their next filing.

• Eric AndersenDirector+$12.5M-$338K
• Gary L CrockerOfficer, Director+$783K
• Ana RadeljevicDirector, since June 2022+$50K
• Ulrik B. NielsenDirector+$60.6K
• Noah G. LevyDirector+$2.24M
• Russell T RayDirector-$3,840

Recent Form 3, 4, and 5 filings for MACK

• 1046d
  Andersen Eric bought $651,754 worth of shares (49,550 units at $13.15) (SEC Form 4)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1063d
  Andersen Eric bought $1,298,472 worth of shares (101,050 units at $12.85) (SEC Form 4)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1084d
  Andersen Eric bought $3,750 worth of shares (300 units at $12.50) (SEC Form 4)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1088d
  Andersen Eric bought $627,125 worth of shares (50,170 units at $12.50) (SEC Form 4)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1091d
  Andersen Eric bought $289,319 worth of shares (23,798 units at $12.16) (SEC Form 4)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1182d
  SEC Form 4: Crocker Gary L bought $49,904 worth of shares (4,000 units at $12.48)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1187d
  SEC Form 4: Andersen Eric bought $2,658,741 worth of shares (221,550 units at $12.00)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1249d
  SEC Form 4 filed by Radeljevic Ana

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1249d
  SEC Form 4 filed by Nielsen Ulrik B.

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1249d
  SEC Form 4 filed by Crocker Gary L

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1327d
  SEC Form 4 filed by Andersen Eric

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1348d
  SEC Form 4: Andersen Eric bought $306,375 worth of shares (26,967 units at $11.36) (Amendment)

  4/A - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1376d
  SEC Form 4: Andersen Eric bought $306,068 worth of shares (26,940 units at $11.36)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1377d
  SEC Form 4: Andersen Eric bought $249,298 worth of shares (21,875 units at $11.40)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1391d
  SEC Form 4: Levy Noah G. bought $1,190,000 worth of shares (100,000 units at $11.90)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1399d
  SEC Form 4: Radeljevic Ana bought $49,997 worth of shares (4,156 units at $12.03)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1404d
  SEC Form 4: Andersen Eric bought $347,159 worth of shares (30,632 units at $11.33)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1404d
  SEC Form 4: Levy Noah G. bought $74,179 worth of shares (6,600 units at $11.24)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1405d
  SEC Form 4: Andersen Eric bought $2,774,716 worth of shares (259,936 units at $10.67)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1577d
  SEC Form 4: Levy Noah G. bought $18,227 worth of shares (3,095 units at $5.89)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1579d
  SEC Form 4: Levy Noah G. bought $20,697 worth of shares (3,516 units at $5.89)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1581d
  SEC Form 4: Levy Noah G. bought $14,835 worth of shares (2,478 units at $5.99)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1587d
  SEC Form 4: Levy Noah G. bought $8,921 worth of shares (1,550 units at $5.76)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1595d
  SEC Form 4: Levy Noah G. bought $8,990 worth of shares (1,500 units at $5.99)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1601d
  SEC Form 4: Levy Noah G. bought $8,205 worth of shares (1,420 units at $5.78)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1605d
  SEC Form 3 filed by new insider Radeljevic Ana

  3 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1606d
  SEC Form 4: Levy Noah G. bought $123,880 worth of shares (23,838 units at $5.20)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1608d
  SEC Form 4: Levy Noah G. bought $81,361 worth of shares (16,085 units at $5.06)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1609d
  SEC Form 4: Crocker Gary L bought $22,918 worth of shares (4,452 units at $5.15)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1613d
  SEC Form 4: Crocker Gary L bought $3,310 worth of shares (649 units at $5.10)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1615d
  SEC Form 4 filed by Nielsen Ulrik B.

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1615d
  SEC Form 4 filed by Crocker Gary L

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1627d
  SEC Form 4: Crocker Gary L bought $12,495 worth of shares (2,455 units at $5.09)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1630d
  SEC Form 4: Crocker Gary L bought $2,582 worth of shares (512 units at $5.04)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1634d
  SEC Form 4: Crocker Gary L bought $26,554 worth of shares (5,225 units at $5.08)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1658d
  SEC Form 4: Crocker Gary L bought $30,001 worth of shares (5,000 units at $6.00)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1682d
  SEC Form 4: Crocker Gary L bought $2,851 worth of shares (461 units at $6.18)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1685d
  SEC Form 4: Crocker Gary L bought $30,822 worth of shares (5,000 units at $6.16)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1690d
  SEC Form 4: Crocker Gary L bought $2,446 worth of shares (400 units at $6.11)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1697d
  SEC Form 4: Crocker Gary L bought $28,556 worth of shares (4,649 units at $6.14)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1699d
  SEC Form 4: Crocker Gary L bought $60,527 worth of shares (10,000 units at $6.05)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1719d
  SEC Form 4: Crocker Gary L bought $19,970 worth of shares (3,351 units at $5.96)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1724d
  SEC Form 4: Crocker Gary L bought $79,857 worth of shares (12,945 units at $6.17)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1726d
  SEC Form 4: Crocker Gary L bought $11,486 worth of shares (1,923 units at $5.97)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1741d
  SEC Form 4: Levy Noah G. bought $64,279 worth of shares (14,200 units at $4.53)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1742d
  SEC Form 4: Crocker Gary L bought $3,096 worth of shares (673 units at $4.60)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1745d
  SEC Form 4: Levy Noah G. bought $176,259 worth of shares (35,800 units at $4.92)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1746d
  SEC Form 4: Crocker Gary L bought $14,121 worth of shares (3,100 units at $4.56)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1748d
  SEC Form 4: Nielsen Ulrik B. bought $60,630 worth of shares (14,287 units at $4.24)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1748d
  SEC Form 4: Crocker Gary L bought $40,051 worth of shares (9,105 units at $4.40)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1753d
  SEC Form 4: Crocker Gary L bought $22,689 worth of shares (5,000 units at $4.54)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1755d
  SEC Form 4: Crocker Gary L bought $44,674 worth of shares (10,000 units at $4.47)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1760d
  SEC Form 4: Crocker Gary L bought $41,798 worth of shares (10,000 units at $4.18)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1761d
  SEC Form 4: Levy Noah G. bought $421,192 worth of shares (105,949 units at $3.98)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1763d
  SEC Form 4: Levy Noah G. bought $33,524 worth of shares (8,780 units at $3.82)

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1769d
  SEC Form 4: Ray Russell T sold $3,840 worth of shares (1,000 units at $3.84), closing all direct ownership in the company

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1875d
  SEC Form 4: Andersen Eric bought $651,857 worth of Common Stock (100,214 units at $6.50) and sold $338,120 worth of Common Stock (52,914 units at $6.39) (Amendment)

  4/A - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1973d
  SEC Form 4 filed by Nielsen Ulrik B.

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1973d
  SEC Form 4 filed by RAY RUSSELL T

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)
• 1973d
  SEC Form 4 filed by CROCKER GARY L

  4 - MERRIMACK PHARMACEUTICALS INC (0001274792) (Issuer)