Security key
56854Q200
MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (MRNS)
CUSIP: 56854Q200
Q1 2023 13F Holders as of 31 Mar 2023
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 41,133,046
- Total 13F value
- $283,923,170
- Share change
- +2,295,900
- Put/Call ratio
- 11%
- SEC-reported price per share
- $6.90
- Number of holders
- 85
- Value change
- +$27,882,072
- Number of buys
- 57
- Number of sells
- 35
- Shares outstanding
- 54,731,500
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2023
Institutions
85
Top holders
10
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
Reporting periods
Holder history for CUSIP 56854Q200
Recent filing periods:
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
MONTANOVA CAPITAL, LLC
Disclosed value leader
Lion Point Capital, LP
Comparable rows
15/15
Latest evidence
31 Dec 2022
13F
Lead comparable stake: 8.8%
Showing 1-6 of 15 holder rows.
Quick read
MONTANOVA CAPITAL, LLC leads the comparable SEC ownership view at 8.8%.
15 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 MONTANOVA CAPITAL, LLC's linked filing trail.
Comparable ownership
Top 5
MONTANOVA CAPITAL, LLC
8.8%
Lion Point Capital, LP
7.7%
Point72 Asset Management, L.P.
6.4%
Avoro Capital Advisors LLC
5.8%
EVENTIDE ASSET MANAGEMENT, LLC
5.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MONTANOVA CAPITAL, LLC |
13F
Company
|
8.8%
|
$19,195,520
4,822,995 shares
|
— | 31 Dec 2022 |
| Lion Point Capital, LP |
13F
Company
|
7.7%
|
$21,480,000
4,222,648 shares
|
— | 31 Dec 2022 |
| Point72 Asset Management, L.P. |
13F
Company
|
6.4%
|
$13,989,700
3,515,000 shares
|
— | 31 Dec 2022 |
| Avoro Capital Advisors LLC |
13F
Company
|
5.8%
|
$12,537,000
3,150,000 shares
|
— | 31 Dec 2022 |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
Company
|
5.8%
|
$12,537,000
3,150,000 shares
|
— | 31 Dec 2022 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
Company
|
3.8%
|
$8,168,950
2,052,500 shares
|
— | 31 Dec 2022 |
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 Q1 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
85
Shares
41,133,046
Rows available
85
| 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 Q1 2023 vs Q3 2025 Across Filers
Q3 2025 holders
1
Q1 2023 holders
85
Holder diff
84
| Investor | Q3 2025 Shares | Q1 2023 Shares | Share Diff | Share Chg % | Q3 2025 value | Q1 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend