InsiderTrades.com logo
Is Starlink Set For The Largest IPO In History?
From Paradigm Press   |   Ad
He turned PayPal from a tiny, off-the-radar startup… to a massive $64 billion giant. Then, he did it again with Tesla… which is up more than 19,500% since 2010. For perspective, that turns $100 invested into almost $20,000!
Click here now for the urgent details.

MACK Insider Trading

Notice: This stock is marked as potentially delisted. It may not be actively trading.
Insider Ownership Percentage: 30.57%
Insider Buying (Last 12 Months): $2,581,121.40
Insider Selling (Last 12 Months): $0.00

Merrimack Pharmaceuticals Insider Trading History Chart

This chart shows the insider buying and selling history at Merrimack Pharmaceuticals by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Merrimack Pharmaceuticals Share Price & Price History

Current Price: $15.13
Price Change: +0.30 (1.20%)
As of 05/28/2024 01:00 AM ET

This chart shows the closing price history over time for MACK up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Is Starlink Set For The Largest IPO In History?
From Paradigm Press   |   Ad
He turned PayPal from a tiny, off-the-radar startup… to a massive $64 billion giant. Then, he did it again with Tesla… which is up more than 19,500% since 2010. For perspective, that turns $100 invested into almost $20,000!
Click here now for the urgent details.

Merrimack Pharmaceuticals Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/28/2023Eric AndersenDirectorBuy857$13.35$11,440.95534,008View SEC Filing Icon  
12/26/2023Eric AndersenDirectorBuy48,693$13.15$640,312.95533,151View SEC Filing Icon  
12/7/2023Eric AndersenDirectorBuy101,050$12.85$1,298,492.501,735,600View SEC Filing Icon  
11/17/2023Eric AndersenDirectorBuy300$12.50$3,750.001,659,216View SEC Filing Icon  
11/14/2023Eric AndersenDirectorBuy50,170$12.50$627,125.001,658,981View SEC Filing Icon  
8/10/2023Gary L. CrockerInsiderBuy2,000$12.52$25,040.00133,105View SEC Filing Icon  
8/7/2023Eric AndersenDirectorBuy134,493$12.00$1,613,916.001,496,680View SEC Filing Icon  
3/21/2023Eric AndersenDirectorBuy160,590$11.52$1,849,996.801,412,044View SEC Filing Icon  
1/30/2023Eric AndersenDirectorBuy24,708$11.36$280,682.881,282,853View SEC Filing Icon  
1/27/2023Eric AndersenDirectorBuy21,875$11.40$249,375.001,263,103View SEC Filing Icon  
1/12/2023Noah G. LevyDirectorBuy100,000$11.90$1,190,000.001,119,586View SEC Filing Icon  
1/6/2023Ana RadeljevicDirectorBuy4,156$12.03$49,996.684,156View SEC Filing Icon  
7/13/2022Noah G. LevyDirectorBuy3,095$5.89$18,229.55754,108View SEC Filing Icon  
7/11/2022Noah G. LevyDirectorBuy700$5.97$4,179.00748,197View SEC Filing Icon  
7/7/2022Noah G. LevyDirectorBuy1,100$5.99$6,589.00746,119View SEC Filing Icon  
6/30/2022Noah G. LevyDirectorBuy1,550$5.76$8,928.00745,019View SEC Filing Icon  
6/23/2022Noah G. LevyDirectorBuy500$6.00$3,000.00742,469View SEC Filing Icon  
6/16/2022Noah G. LevyDirectorBuy520$5.45$2,834.001,012,471View SEC Filing Icon  
6/14/2022Noah G. LevyDirectorBuy20,938$5.17$108,249.461,010,515View SEC Filing Icon  
6/9/2022Gary L. CrockerInsiderBuy4,452$5.15$22,927.80131,105View SEC Filing Icon  
6/7/2022Gary L. CrockerInsiderBuy300$5.05$1,515.00126,304View SEC Filing Icon  
5/24/2022Gary L. CrockerInsiderBuy2,323$5.09$11,824.07125,872View SEC Filing Icon  
4/21/2022Gary L. CrockerInsiderBuy5,000$6.00$30,000.00115,338View SEC Filing Icon  
3/30/2022Gary L. CrockerInsiderBuy161$6.20$998.20View SEC Filing Icon  
3/28/2022Gary L. CrockerInsiderBuy5,000$6.16$30,800.00View SEC Filing Icon  
3/22/2022Gary L. CrockerInsiderBuy400$6.11$2,444.00View SEC Filing Icon  
3/14/2022Gary L. CrockerInsiderBuy5,000$6.02$30,100.00View SEC Filing Icon  
3/11/2022Gary L. CrockerInsiderBuy5,000$6.08$30,400.00View SEC Filing Icon  
1/31/2022Noah G. LevyDirectorBuy1,237$5.05$6,246.85View SEC Filing Icon  
1/28/2022Noah G. LevyDirectorBuy12,963$4.48$58,074.24View SEC Filing Icon  
1/26/2022Gary L. CrockerInsiderBuy3,100$4.56$14,136.00View SEC Filing Icon  
1/26/2022Noah G. LevyDirectorBuy19,528$5.01$97,835.28View SEC Filing Icon  
1/24/2022Gary L. CrockerInsiderBuy7,105$4.33$30,764.65View SEC Filing Icon  
1/24/2022Ulrik B. NielsenDirectorBuy14,287$4.24$60,576.88View SEC Filing Icon  
1/21/2022Gary L. CrockerInsiderBuy2,000$4.65$9,300.00View SEC Filing Icon  
1/18/2022Gary L. CrockerInsiderBuy5,000$4.54$22,700.00View SEC Filing Icon  
1/13/2022Gary L. CrockerInsiderBuy5,000$4.42$22,100.00View SEC Filing Icon  
1/11/2022Gary L. CrockerInsiderBuy5,000$4.03$20,150.00View SEC Filing Icon  
1/10/2022Noah G. LevyDirectorBuy14,679$3.83$56,220.57View SEC Filing Icon  
See Full Table
Trump’s weapon lurks in abandoned America
From Porter & Company   |   Ad
Unemployment is sky-high, wages are at record lows. Addiction has overwhelmed these once thriving coal towns. Hopelessness abounds. And looking in, the future here looks bleak for these forgotten souls. But in a strange twist of fate, something miraculous is taking place…
Go here now to watch my new documentary

SEC Filings (Institutional Ownership Changes) for Merrimack Pharmaceuticals (NASDAQ:MACK)

63.97% of Merrimack Pharmaceuticals stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at MACK by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Merrimack Pharmaceuticals Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/14/2024Marshall Wace LLP38,221$0.58M0.0%N/A0.258%Search for SEC Filing on Google Icon
8/9/2024Dimensional Fund Advisors LP318,995$4.83M0.0%-19.9%2.157%Search for SEC Filing on Google Icon
8/8/2024JBF Capital Inc.39,637$0.60M0.1%N/A0.268%Search for SEC Filing on Google Icon
8/1/2024Rhumbline Advisers2,480$38K0.0%-81.7%0.017%Search for SEC Filing on Google Icon
5/15/2024Aristides Capital LLC10,000$0.15M0.1%N/A0.069%Search for SEC Filing on Google Icon
5/10/2024Vanguard Group Inc.620,847$9.17M0.0%+2.0%4.272%Search for SEC Filing on Google Icon
5/1/2024BNP Paribas Financial Markets5,077$75K0.0%+67.3%0.035%Search for SEC Filing on Google Icon
2/14/2024ADAR1 Capital Management LLC549,418$7.37M2.6%N/A3.837%Search for SEC Filing on Google Icon
1/30/2024Strs Ohio3,300$44K0.0%N/A0.023%Search for SEC Filing on Google Icon
1/25/2024Allspring Global Investments Holdings LLC11,827$0.16M0.0%N/A0.083%Search for SEC Filing on Google Icon
11/15/2023Kennedy Capital Management LLC93,708$1.16M0.0%+2.4%0.654%Search for SEC Filing on Google Icon
11/14/2023Wittenberg Investment Management Inc.209,739$2.59M0.9%+2.3%1.465%Search for SEC Filing on Google Icon
11/8/2023Sepio Capital LP306,680$3.78M0.3%+4.1%2.142%Search for SEC Filing on Google Icon
8/11/2023Wittenberg Investment Management Inc.204,994$2.52M0.9%+3.5%1.432%Search for SEC Filing on Google Icon
8/4/2023American International Group Inc.5,039$62K0.0%N/A0.035%Search for SEC Filing on Google Icon
8/3/2023Fifth Lane Capital LP10,929$0.13M0.0%N/A0.077%Search for SEC Filing on Google Icon
5/15/2023Wittenberg Investment Management Inc.197,994$2.43M0.9%+3.6%1.388%Search for SEC Filing on Google Icon
5/15/2023Madison Avenue Partners LP553,085$6.80M1.5%N/A3.879%Search for SEC Filing on Google Icon
5/15/2023Sio Capital Management LLC272,843$3.35M1.7%+9.1%1.913%Search for SEC Filing on Google Icon
5/12/2023Yakira Capital Management Inc.72,118$0.89M0.2%-15.9%0.506%Search for SEC Filing on Google Icon
2/15/2023Nantahala Capital Management LLC210,000$2.41M0.2%-51.1%1.566%Search for SEC Filing on Google Icon
2/10/202322NW LP1,015,048$11.63M6.3%-17.5%7.569%Search for SEC Filing on Google Icon
2/10/2023Yakira Capital Management Inc.85,732$0.98M0.2%-26.0%0.639%Search for SEC Filing on Google Icon
2/6/2023Wittenberg Investment Management Inc.191,194$2.19M0.9%+1.3%1.426%Search for SEC Filing on Google Icon
11/14/2022Point72 Asset Management L.P.1,100,994$4.13M0.0%+228.5%8.210%Search for SEC Filing on Google Icon
11/10/2022Nantahala Capital Management LLC429,596$1.61M0.1%-12.6%3.204%Search for SEC Filing on Google Icon
10/28/2022Sepio Capital LP294,545$1.11M0.1%-6.9%2.196%Search for SEC Filing on Google Icon
8/16/2022Western Standard LLC1,269,558$7.55M5.7%+8.3%9.467%Search for SEC Filing on Google Icon
8/15/2022Nantahala Capital Management LLC491,509$2.92M0.1%-4.9%3.665%Search for SEC Filing on Google Icon
8/11/2022Yakira Capital Management Inc.115,821$0.69M0.1%+30.6%0.864%Search for SEC Filing on Google Icon
7/26/2022Sepio Capital LP316,313$1.88M0.2%+6.7%2.359%Search for SEC Filing on Google Icon
5/13/2022Bronte Capital Management Pty Ltd.578,313$3.66M0.3%+7.6%4.313%Search for SEC Filing on Google Icon
5/12/2022Yakira Capital Management Inc.88,683$0.56M0.1%+20.7%0.661%Search for SEC Filing on Google Icon
5/9/2022Sepio Capital LP296,546$1.88M0.2%+276.2%2.211%Search for SEC Filing on Google Icon
2/16/2022Western Standard LLC1,172,463$4.58M2.7%-7.6%8.743%Search for SEC Filing on Google Icon
2/10/2022Bronte Capital Management Pty Ltd.537,584$2.10M0.1%-2.1%4.009%Search for SEC Filing on Google Icon
2/9/2022Dimensional Fund Advisors LP488,687$1.91M0.0%-2.1%3.644%Search for SEC Filing on Google Icon
2/9/2022Yakira Capital Management Inc.73,450$0.29M0.0%+21.1%0.548%Search for SEC Filing on Google Icon
1/20/2022Radnor Capital Management LLC13,332$52K0.0%N/A0.099%Search for SEC Filing on Google Icon
11/15/2021Point72 Asset Management L.P.341,685$1.65M0.0%+63.0%2.548%Search for SEC Filing on Google Icon
11/15/2021Dimensional Fund Advisors LP499,368$2.41M0.0%-3.5%3.724%Search for SEC Filing on Google Icon
11/9/2021BlackRock Inc.211,051$1.02M0.0%+12.8%1.574%Search for SEC Filing on Google Icon
11/3/2021Sepio Capital LP78,829$0.38M0.0%-64.4%0.588%Search for SEC Filing on Google Icon
8/25/2021Marshall Wace LLP39,150$0.25M0.0%-57.3%0.292%Search for SEC Filing on Google Icon
8/17/2021Bridgeway Capital Management LLC59,200$0.38M0.0%-7.8%0.441%Search for SEC Filing on Google Icon
8/16/2021Point72 Asset Management L.P.209,563$1.34M0.0%N/A1.563%Search for SEC Filing on Google Icon
8/16/2021Nantahala Capital Management LLC571,946$3.66M0.1%-6.1%4.265%Search for SEC Filing on Google Icon
8/16/2021State Street Corp46,556$0.30M0.0%+316.2%0.347%Search for SEC Filing on Google Icon
8/16/2021Western Standard LLC1,269,558$8.11M4.8%+25.5%9.467%Search for SEC Filing on Google Icon
8/16/2021Marshall Wace LLP39,150$0.25M0.0%-57.3%0.292%Search for SEC Filing on Google Icon
8/13/2021Renaissance Technologies LLC101,970$0.65M0.0%-45.8%0.760%Search for SEC Filing on Google Icon
8/13/2021Northern Trust Corp31,678$0.20M0.0%-12.5%0.236%Search for SEC Filing on Google Icon
8/13/2021Geode Capital Management LLC96,692$0.62M0.0%+6.0%0.721%Search for SEC Filing on Google Icon
8/12/2021Wittenberg Investment Management Inc.189,294$1.21M0.5%+1.7%1.412%Search for SEC Filing on Google Icon
5/18/2021Millennium Management LLC12,292$77K0.0%N/A0.092%Search for SEC Filing on Google Icon
5/17/2021Price T Rowe Associates Inc. MD10,500$66K0.0%N/A0.078%Search for SEC Filing on Google Icon
5/14/2021Nantahala Capital Management LLC608,974$3.82M0.1%-19.0%4.541%Search for SEC Filing on Google Icon
5/14/2021Dimensional Fund Advisors LP519,220$3.26M0.0%-5.7%3.872%Search for SEC Filing on Google Icon
5/13/2021Renaissance Technologies LLC188,161$1.18M0.0%+6.4%1.403%Search for SEC Filing on Google Icon
5/13/2021Bank of New York Mellon Corp42,225$0.27M0.0%+140.7%0.315%Search for SEC Filing on Google Icon
5/12/2021Geode Capital Management LLC91,208$0.57M0.0%+9.3%0.680%Search for SEC Filing on Google Icon
5/10/2021Sepio Capital LP218,907$1.38M0.1%+13.1%1.632%Search for SEC Filing on Google Icon
5/7/2021BlackRock Inc.255,503$1.61M0.0%+1.4%1.905%Search for SEC Filing on Google Icon
4/26/2021Mascoma Wealth Management LLC5,000$31K0.0%N/A0.037%Search for SEC Filing on Google Icon
4/13/2021Bronte Capital Management Pty Ltd.550,679$3.46M0.4%+3.6%4.106%Search for SEC Filing on Google Icon
3/8/2021Dimensional Fund Advisors LP550,539$3.79M0.0%-2.9%4.115%Search for SEC Filing on Google Icon
2/25/2021Dimensional Fund Advisors LP550,539$3.79M0.0%-2.9%4.115%Search for SEC Filing on Google Icon
2/10/2021Renaissance Technologies LLC176,861$1.22M0.0%N/A1.322%Search for SEC Filing on Google Icon
12/16/2020Bronte Capital Management Pty Ltd.531,510$2.05M0.4%N/A3.972%Search for SEC Filing on Google Icon
11/17/2020Nantahala Capital Management LLC751,943$3.01M0.1%+0.6%5.620%Search for SEC Filing on Google Icon
11/12/2020Bronte Capital Management Pty Ltd.531,510$2.05M0.4%N/A3.972%Search for SEC Filing on Google Icon
10/29/2020LVW Advisors LLC20,000$80K0.0%N/A0.149%Search for SEC Filing on Google Icon
8/17/2020Private Advisor Group LLC7,562$25K0.0%N/A0.057%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Merrimack Pharmaceuticals logo
Merrimack Pharmaceuticals, Inc. operates as a biopharmaceutical company in the United States. The company was incorporated in 1993 and is headquartered in Cambridge, Massachusetts.
Read More on Merrimack Pharmaceuticals

Today's Range

Now: $15.13
Low: $15.13
High: $15.13

50 Day Range

MA: $14.82
Low: $14.65
High: $15.13

52 Week Range

Now: $15.13
Low: $11.53
High: $15.89

Volume

N/A

Average Volume

396,929 shs

Market Capitalization

$223.77 million

P/E Ratio

1.09

Dividend Yield

N/A

Beta

1.45

Who are the company insiders with the largest holdings of Merrimack Pharmaceuticals?

Merrimack Pharmaceuticals' top insider shareholders include:
  1. Eric Andersen (Director)
  2. Noah G Levy (Director)
  3. Gary L Crocker (Insider)
  4. Ana Radeljevic (Director)
Learn More about top insider investors at Merrimack Pharmaceuticals.

Who are the major institutional investors of Merrimack Pharmaceuticals?

Merrimack Pharmaceuticals' top institutional investors include:
  1. Dimensional Fund Advisors LP — 2.16%
  2. JBF Capital Inc. — 0.27%
  3. Marshall Wace LLP — 0.26%
  4. Rhumbline Advisers — 0.02%
Learn More about top institutional investors of Merrimack Pharmaceuticals stock.

Which institutional investors are selling Merrimack Pharmaceuticals stock?

During the last quarter, MACK stock was sold by these institutional investors:
  1. Dimensional Fund Advisors LP
  2. Rhumbline Advisers

Which institutional investors are buying Merrimack Pharmaceuticals stock?

Within the last quarter, MACK stock was bought by institutional investors including:
  1. JBF Capital Inc.
  2. Marshall Wace LLP
During the previous year, these company insiders have bought Merrimack Pharmaceuticals stock:
  1. Eric Andersen (Director)
  2. Noah G Levy (Director)
  3. Gary L Crocker (Insider)
  4. Ana Radeljevic (Director)
Learn More investors buying Merrimack Pharmaceuticals stock.
Is Starlink Set For The Largest IPO In History?
From Paradigm Press   |   Ad
He turned PayPal from a tiny, off-the-radar startup… to a massive $64 billion giant. Then, he did it again with Tesla… which is up more than 19,500% since 2010. For perspective, that turns $100 invested into almost $20,000!
Click here now for the urgent details.