What does CUSIP 56854Q200 represent in this 13F holders report?

CUSIP 56854Q200 is the security identifier for MRNS - MARINUS PHARMACEUTICALS, INC. - COMMON STOCK used to aggregate holder disclosures.

How many institutions held MRNS - MARINUS PHARMACEUTICALS, INC. - COMMON STOCK in Q3 2020?

73 institutional investors reported MRNS - MARINUS PHARMACEUTICALS, INC. - COMMON STOCK for Q3 2020. Use the holders table for investor-level position and value details.

MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (MRNS)

CUSIP: 56854Q200

Q3 2020 13F Holders as of 30 Sep 2020

Security type / class: Equity / COMMON STOCK
Total 13F shares: 18,608,810
Total 13F value: $238,849,091
Share change: +18,608,185
Put/Call ratio: 38%
SEC-reported price per share: $12.85
Number of holders: 73
Value change: +$238,841,091
Number of buys: 72
Shares outstanding: 54,731,500

Security key

56854Q200

Report period

Q3 2020

Institutions

Top holders

MRNS full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 MARINUS PHARMACEUTICALS, INC. SEC filings MARINUS PHARMACEUTICALS, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 56854Q200

Newer quarter: Q3 2025

Recent filing periods:

Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of MRNS - MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Avoro Capital Advisors LLC

Disclosed value leader

Avoro Capital Advisors LLC

Comparable rows

0/15

Latest evidence

30 Jun 2020

13F Highest disclosed value: $30,378,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

Avoro Capital Advisors LLC has the largest disclosed position value at $30.38M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Avoro Capital Advisors LLC's linked filing trail.

Disclosed position value Top 5

Avoro Capital Advisors LLC $30.38M

Lion Point Capital, LP $27.62M

Boxer Capital, LLC $24.38M

ADAGE CAPITAL PARTNERS GP, L.L.C. $16M

BlackRock Finance, Inc. $14.9M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Avoro Capital Advisors LLC	13F Company 13F	— class O/S missing	$30,378,000 11,960,000 shares	—	30 Jun 2020
Lion Point Capital, LP	13F Company 13F	— class O/S missing	$27,618,000 10,873,340 shares	—	30 Jun 2020
Boxer Capital, LLC	13F Company 13F	— class O/S missing	$24,384,000 9,600,000 shares	—	30 Jun 2020
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F Company 13F	— class O/S missing	$16,002,000 6,300,000 shares	—	30 Jun 2020
BlackRock Finance, Inc.	13F Company 13F	— class O/S missing	$14,904,000 5,867,856 shares	—	30 Jun 2020
Venrock Adviser, LLC	13F Company 13F	— class O/S missing	$14,545,000 5,726,540 shares	—	30 Jun 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2020

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

18,608,810

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2020 vs Q3 2025 Across Filers

Q3 2025 holders

Q3 2020 holders

Holder diff

Investor	Q3 2025 Shares	Q3 2020 Shares	Share Diff	Share Chg %	Q3 2025 value	Q3 2020 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend