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MRNS

MARINUS PHARMACEUTICALS, INC.

Total Trades

15

Buys

0

Sells

15

Largest Trade

$100K–$500K

Insiders

9

Institutional Funds

6

Inst. Value

$1M+

Activist Filings

45

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Ezickson Elan	Director	SELL	<$1K	2K	$0.54	Jan 23, 2025
Johnson Marvin	Director	SELL	<$1K	2K	$0.54	Jan 23, 2025
Shafer Christina	CHIEF COMMERCIAL O…	SELL	$15K–$50K	2K	$9.56	Feb 22, 2024
MANNING MARTHA E	SVP	SELL	$15K–$50K	2K	$9.57	Feb 22, 2024
Hulihan Joseph	CHIEF MEDICAL OFFI…	SELL	$15K–$50K	3K	$9.98	Feb 21, 2024
Pfanstiel Steven	CFO AND COO	SELL	$15K–$50K	3K	$9.97	Feb 21, 2024
Braunstein Scott	CHAIRMAN AND CEO	SELL	$100K–$500K	12K	$9.94	Feb 21, 2024
Shafer Christina	CHIEF COMMERCIAL O…	SELL	$15K–$50K	2K	$9.52	Aug 9, 2023
Braunstein Scott	CHAIRMAN AND CEO	SELL	$50K–$100K	6K	$9.55	Aug 9, 2023
Pfanstiel Steven	CFO AND COO	SELL	$15K–$50K	3K	$9.54	Aug 9, 2023
MANNING MARTHA E	SVP	SELL	$15K–$50K	2K	$9.54	Aug 9, 2023
Hulihan Joseph	CHIEF MEDICAL OFFI…	SELL	$15K–$50K	3K	$9.55	Aug 9, 2023
Fischer Seth H. Z.	Director	SELL	$1K–$15K	1K	$6.54	Feb 8, 2023
Ezickson Elan	Director	SELL	$1K–$15K	750	$6.56	Feb 8, 2023
Austin Charles	Director	SELL	$1K–$15K	1K	$6.49	Feb 8, 2023

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Institutional Ownership

13F filings as of Dec 31, 2024 · 6 funds holding

Fund	Shares	Value	Type
Aberdeen Group plc	2.7M	$1M+	SH
DELTEC ASSET MANAGEMENT LLC	200K	$100K–$500K	SH
Assenagon Asset Management S.A.	57K	$15K–$50K	SH
Perfromance Wealth Partners, LLC	11K	$1K–$15K	SH
OSAIC HOLDINGS, INC.	6K	$1K–$15K	SH
FIFTH THIRD BANCORP	115	<$1K	SH

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Beryl Capital Management LLC

SC 13G/A · May 15, 2025

0.0%

0 shares

SC 13G/A · Mar 6, 2025

0.0%

0 shares

Panacea Venture Healthcare Fund II, L.P.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

TANG CAPITAL MANAGEMENT, LLC

SC 13G/A · Feb 14, 2025

3.0%

1.6M shares

Sofinnova Investments, Inc.

SC 13G/A · Feb 12, 2025

0.0%

0 shares

SUVRETTA CAPITAL MANAGEMENT, LLC

SC 13G · Feb 12, 2025

5.5%

3.0M shares

SUVRETTA CAPITAL MANAGEMENT, LLC

SC 13G/A · Feb 12, 2025

3.8%

2.1M shares

Franklin Resources, Inc.

SC 13G/A · Feb 11, 2025

0.0%

0 shares

SC 13G · Feb 4, 2025

6.0%

3.3M shares

The Vanguard Group

SC 13G/A · Jan 31, 2025

4.7%

2.6M shares

Beryl Capital Management LLC

SC 13G · Jan 8, 2025

9.9%

5.5M shares

Sofinnova Investments, Inc.

SC 13G · Nov 14, 2024

8.0%

4.4M shares

Cormorant Asset Management, LP

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Eventide Asset Management, LLC

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Avoro Capital Advisors LLC

SC 13G/A · Nov 14, 2024

0.0%

0 shares

The Vanguard Group

SC 13G/A · Nov 12, 2024

5.1%

2.8M shares

Jennison Associates LLC IRS Identification #52-2069785 (formerly 13-2631108)

SC 13G/A · Nov 12, 2024

0.0%

0 shares

The Vanguard Group

SC 13G/A · Nov 4, 2024

5.1%

2.8M shares

Panacea Innovation Limited

SC 13G · Nov 2, 2024

10.0%

5.5M shares

Franklin Resources, Inc.

SC 13G/A · Oct 31, 2024

8.6%

4.7M shares

BlackRock, Inc.

SC 13G/A · Jul 8, 2024

3.4%

1.9M shares

Citadel Advisors LLC

SC 13G · Apr 25, 2024

0.0%

6 shares

TANG CAPITAL PARTNERS, LP

SC 13G · Apr 19, 2024

8.2%

4.5M shares

LION POINT CAPITAL, LP

SC 13G/A · Feb 14, 2024

3.9%

2.1M shares

Cormorant Global Healthcare Master Fund, LP

SC 13G/A · Feb 14, 2024

6.0%

3.3M shares

Eventide Asset Management, LLC

SC 13G/A · Feb 14, 2024

8.3%

4.5M shares

Point72 Asset Management, L.P.

SC 13G/A · Feb 14, 2024

0.9%

493K shares

Avoro Capital Advisors LLC

SC 13G/A · Feb 14, 2024

5.8%

3.1M shares

Suvretta Capital Management, LLC

SC 13G/A · Feb 13, 2024

10.0%

5.5M shares

BlackRock, Inc.

SC 13G · Jan 25, 2024

8.4%

4.6M shares

Cormorant Global Healthcare Master Fund, LP

SC 13G · Oct 10, 2023

5.5%

2.8M shares

Adage Capital Partners, L.P.

SC 13G · Jul 6, 2023

5.5%

2.8M shares

LION POINT CAPITAL, LP

SC 13G/A · Feb 14, 2023

9.9%

4.8M shares

Venrock Healthcare Capital Partners II, L.P.

SC 13G/A · Feb 14, 2023

3.7%

1.8M shares

683 Capital Management, LLC

SC 13G/A · Feb 14, 2023

0.2%

90K shares

Eventide Asset Management, LLC

SC 13G · Feb 14, 2023

6.6%

3.1M shares

Avoro Capital Advisors LLC

SC 13G/A · Feb 14, 2023

6.3%

3.1M shares

Suvretta Capital Management, LLC

SC 13G/A · Feb 13, 2023

10.0%

5.0M shares

BlackRock, Inc.

SC 13G · Jul 8, 2022

2.5%

941K shares

LION POINT CAPITAL, LP

SC 13G/A · Feb 14, 2022

9.9%

3.6M shares

Boxer Capital, LLC

SC 13G/A · Feb 14, 2022

0 shares

Venrock Healthcare Capital Partners II, L.P.

SC 13G/A · Feb 14, 2022

7.8%

2.9M shares

683 Capital Management, LLC

SC 13G/A · Feb 11, 2022

5.3%

1.9M shares

Suvretta Capital Management, LLC

SC 13G/A · Feb 11, 2022

7.2%

2.6M shares

Avoro Capital Advisors LLC

SC 13G/A · Feb 11, 2022

8.8%

3.2M shares