Security key
56854Q200
MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (MRNS)
CUSIP: 56854Q200
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 302
- Total 13F value
- $531
- Share change
- +302
- SEC-reported price per share
- $1.76
- Number of holders
- 1
- Value change
- +$531
- Number of buys
- 1
- Shares outstanding
- 54,731,500
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
1
Top holders
0
MRNS full security history
Ownership snapshot
Newer quarter: Q4 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
MONTANOVA CAPITAL, LLC
Comparable rows
3/9
Latest evidence
07 Feb 2025
13D/G
3/4/5
Lead comparable stake: 5.5%
6 rows are not safely comparable across share classes.
13D/G row: MONTANOVA CAPITAL, LLC
Showing 1-6 of 9 holder rows.
Quick read
MONTANOVA CAPITAL, LLC leads the comparable SEC ownership view at 5.5%.
3 of 9 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 3
MONTANOVA CAPITAL, LLC
5.5%
VANGUARD GROUP INC
4.7%
TANG CAPITAL PARTNERS LP
3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 9 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MONTANOVA CAPITAL, LLC |
13D/G
SUVRETTA CAPITAL MANAGEMENT, LLC
|
5.5%
|
$1,662,437
3,022,612 shares
|
+$504,541 | 07 Feb 2025 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
4.7%
|
$1,428,222
2,596,768 shares
|
$0 | 31 Dec 2024 |
| TANG CAPITAL PARTNERS LP |
13D/G
TANG CAPITAL MANAGEMENT, LLC
|
3%
|
$903,070
1,641,945 shares
|
$0 | 31 Dec 2024 |
| Sarah B. Noonberg |
3/4/5
Director
|
—
mixed-class rows
|
$60,348
24,550 shares
mixed-class rows
|
— | 18 Jun 2024 |
| Nicole Vitullo |
3/4/5
Director
|
—
mixed-class rows
|
$57,527
18,817 shares
mixed-class rows
|
— | 04 Feb 2022 |
| Sara Nochur |
3/4/5
Director
|
—
mixed-class rows
|
$56,710
23,700 shares
mixed-class rows
|
— | 18 Jun 2024 |
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.
Archived quarter
Historical 13F summary for Q3 2025
This older quarter remains available as an indexed ownership summary. Detailed holder rows are no longer kept in the hot table for this period.