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Merrimack Pharmaceuticals (MACK)

Company Profile

Company profile

Ticker

MACK

Exchange

Website

CEO

Gary L. Crocker

Incorporated

Location

Fiscal year end

Industry (SIC)

Pharmaceutical Preparations

Pfizer • Johnson & Johnson • Merck & Co. • Alabama Power • Mississippi Power • Teva Pharmaceutical Industries Limited • Entergy Arkansas • Abbott Laboratories • Eli Lilly and • Bristol-Myers Squibb ...

SEC CIK

Corporate docs

Articles of Incorporation & Bylaws

Underwriting Agreements

Plans of Reorganization

Material Contracts & Credit Agreements

Subsidiaries Lists

Subsidiaries

Merrimack Pharmaceuticals UK Limited • Merrimack Securities Corporation ...

MACK stock data

1M 3M 6M 1Y

Latest filings (excl ownership)

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Securities registration termination

Voluntary exchange delisting

Merrimack Pharmaceuticals, Inc. Announces Stockholder Approval of Plan of Dissolution

Additional proxy soliciting materials

Regulation FD Disclosure

Additional proxy soliciting materials

Merrimack Pharmaceuticals Announces Notification of Plan to Voluntary Delist Comon Stock

Additional proxy soliciting materials

Merrimack Receives $225 Million Milestone Payment from Ipsen

Transcripts

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Earnings call transcript

Earnings call transcript

Earnings call transcript

Earnings call transcript

Earnings call transcript

Latest ownership filings

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Newtyn Management, LLC

Western Standard LLC

Financial summary

Financial statements Chart MACK financial data

Quarter (USD)	Dec 23	Sep 23	Jun 23	Mar 23
Revenue
Cost of revenue
Operating income
Operating margin
Net income
Net profit margin
Cash on hand
Change in cash
Diluted EPS

Annual (USD)	Dec 23	Dec 22	Dec 21	Dec 20
Revenue
Cost of revenue
Operating income
Operating margin
Net income
Net profit margin
Cash on hand
Change in cash
Diluted EPS

Financial data from company earnings reports.

Institutional ownership, Q2 2024

MACK institutional ownership history Ownership history

23.9% owned by funds/institutions

13F holders	Current	Prev Q	Change
Total holders	10	65	-84.6%
Opened positions	3	51	-94.1%
Closed positions	58	2	+2800.0%
Increased positions	1	2	-50.0%
Reduced positions	1	1	–

13F shares	Current	Prev Q	Change
Total value	56.97 mm	69.32 bn	-99.9%
Total shares	3.43 mm	8.26 mm	-58.5%
Total puts	0.00	0.00
Total calls	0.00	12.80 k	EXIT
Total put/call ratio	–	–	–

Largest owners	Shares	Value	Change
JFL Capital Management	1.25 mm	$6.00 mm	0.0%
Biotechnology Value Fund L P	1.11 mm	$8.20 mm	0.0%
22NW Fund	1.02 mm	$0.00	0.0%
Marshall Wace	38.22 k	$1.15 mm	NEW
Caldwell Sutter Capital	7.46 k	$0.00	NEW
Rhumbline Advisers	2.48 k	$37.52 mm	-81.7%
Rise Advisors	272.00	$4.11 mm	0.0%
Farther Finance Advisors	77.00	$0.00	NEW
CWM	22.00	$0.00	+340.0%
Nisa Investment Advisors	15.00	$0.00	0.0%

Largest transactions	Shares	Bought/sold	Change
ADAR1 Capital Management	0.00	-902.35 k	EXIT
BLK BlackRock	0.00	-723.29 k	EXIT
Vanguard	0.00	-620.85 k	EXIT
Dimensional Fund Advisors	0.00	-398.00 k	EXIT
Madison Avenue Partners	0.00	-387.22 k	EXIT
IVZ Invesco	0.00	-277.12 k	EXIT
Geode Capital Management	0.00	-272.02 k	EXIT
STT State Street	0.00	-246.85 k	EXIT
Wittenberg Investment Management	0.00	-210.24 k	EXIT
Renaissance Technologies	0.00	-162.18 k	EXIT

Data from 13F filings, for the last complete 13F reporting period. For most recent data, click the ownership history button. Values as filed, not updated for current price. Long positions only.

Recent insider trades

MACK insider ownership history Insider history

Date	Owner	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
28 Dec 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	13.3503	857	11.44 k	534,008
26 Dec 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	13.15	48,693	640.31 k	533,151
7 Dec 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.8498	24,666	316.95 k	484,458
7 Dec 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.8498	76,384	981.52 k	1,735,600
17 Nov 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.5	65	812.50	459,792
17 Nov 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.5	235	2.94 k	1,659,216
14 Nov 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.5	10,887	136.09 k	459,727
14 Nov 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.5	39,283	491.04 k	1,658,981
13 Nov 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.3876	3,379	41.86 k	448,840
13 Nov 23	Andersen Eric	Common Stock	Buy	Acquire P	Yes	No	12.3876	12,191	151.02 k	1,619,698

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.

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