Stock Fundamentals

Company Information

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Company Name
Atrium Therapeutics, Inc. Common Stock
Sector
Healthcare
Industry
Biotechnology
Exchange
NASDAQ
ISIN: US05370A1088
CIK: 0001574111
CUSIP: N71546100
Currency: USD
Full Time Employees: 511
Phone: 619 876 0700
Website: https://www.aviditybiosciences.com
Fiscal Year End: December
IPO Date: Jun 28, 2013
Description:

Atrium Therapeutics, Inc., a biopharmaceutical company, focuses on delivering ribonucleic acid (RNA) therapeutics to the heart to transform the care for people living with cardiomyopathies. The company's development stage product candidates include ATR 1072, a siRNA-based therapy targeting PRKAG2 for the treatment of PRKAG2 syndrome; and ATR 1086, a siRNA-based therapy targeting PLN for the treatment of PLN cardiomyopathy. It also focuses on pipeline to treat a range of genetic and cardiac diseases. The company was incorporated in 2025 and is headquartered in San Diego, California.

Address:

10578 Science Center Drive, San Diego, CA, United States, 92121

Directors & Officers

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Name Title Year Born
Ms. Kathleen P. Gallagher President, CEO & Director 1982
Mr. Brendan Winslow Chief Financial Officer 1988
Dr. Husam Younis Chief Scientific Officer 1974
Ms. Stephanie Kenney Chief Corporate Affairs Officer 1978
Dr. Steven George Hughes M.B.A., M.D. Chief Medical Officer 1968
Ms. Rocio Martin Hoyos Chief Strategy Officer 1983

Institutional Holders

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Holder Name Shares Date Reported % Out Value % Change
HHG PLC 14.52M Sep 30, 2025 9.36% $0.29 34.75%
Vanguard Group Inc 13.65M Dec 31, 2025 8.80% $0.01 3.25%
T. Rowe Price Associates, Inc. 9.79M Sep 30, 2025 6.31% $0.05 -9.45%
BlackRock Inc 9.20M Sep 30, 2025 5.93% $0.01 -1.44%
RA Capital Management, LLC 8.64M Dec 31, 2025 5.57% $6.39 0.00%
Balyasny Asset Management LLC 6.04M Dec 31, 2025 3.89% $0.55 0.00%
Pentwater Capital Management LP 6.03M Dec 31, 2025 3.88% $2.29 0.00%
venBio Select Advisor LLC 5.46M Dec 31, 2025 3.52% $3.87 -28.65%
State Street Corp 4.89M Sep 30, 2025 3.15% $0.01 16.35%
NORGES BANK 3.05M Dec 31, 2025 1.96% $0.02 206.13%
Geode Capital Management, LLC 2.86M Sep 30, 2025 1.84% $0.01 0.35%
Polar Capital Holdings PLC 2.80M Sep 30, 2025 1.80% $0.59 57.97%
Bellevue Group AG 2.63M Dec 31, 2025 1.70% $3.60 22.21%
Adage Capital Partners Gp LLC 2.63M Dec 31, 2025 1.70% $0.29 119.25%
Test Hedge Fund Mgmt 1.80M Dec 31, 2025 1.16% $6.02 0.00%
JPMorgan Chase & Co 1.80M Sep 30, 2025 1.16% $0.00 210.05%
The Goldman Sachs Group Inc 1.73M Sep 30, 2025 1.12% $0.01 51.24%
Bank of America Corp 1.73M Sep 30, 2025 1.11% $0.01 -6.21%
Orbimed Advisors, LLC 1.64M Sep 30, 2025 1.06% $1.68 -9.60%
T. Rowe Price Investment Management,Inc. 1.40M Sep 30, 2025 0.90% $0.04 72.24%

Shares Statistics

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Shares Outstanding: 15.51M
Shares Float: 15.04M
% Insiders: 279.00%
% Institutions: 50.10%
Short % Float: 6.62%

🏆 Top 10 Institutional Holders

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Rank Holder Name Shares Held % of Shares Change Date Reported
1 HHG PLC 14.52M 9.36% ▲ 34.75% Sep 30, 2025
2 Vanguard Group Inc 13.65M 8.80% ▲ 3.25% Dec 31, 2025
3 T. Rowe Price Associates, Inc. 9.79M 6.31% ▼ 9.45% Sep 30, 2025
4 BlackRock Inc 9.20M 5.93% ▼ 1.44% Sep 30, 2025
5 RA Capital Management, LLC 8.64M 5.57% ▲ 0.00% Dec 31, 2025
6 Balyasny Asset Management LLC 6.04M 3.89% ▲ 0.00% Dec 31, 2025
7 Pentwater Capital Management LP 6.03M 3.88% ▲ 0.00% Dec 31, 2025
8 venBio Select Advisor LLC 5.46M 3.52% ▼ 28.65% Dec 31, 2025
9 State Street Corp 4.89M 3.15% ▲ 16.35% Sep 30, 2025
10 NORGES BANK 3.05M 1.96% ▲ 206.13% Dec 31, 2025

Valuation Metrics

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Enterprise Value: $-40.74M
Trailing P/E: 0.00
Forward P/E: 0.00

Financial Highlights

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Market Cap: $225.59M
EBITDA: $-49.31M
PEG Ratio: $0.00
Book Value: $-4.04
Earnings/Share: $-4.48
Profit Margin: -265.88%
Operating Margin: -3,387.89%
ROA (TTM): -399.25%
ROE (TTM): -43.98%
Revenue (TTM): $18.62M
Revenue/Share (TTM): $1.20
Earnings Growth (YOY): 0.00%
Revenue Growth (YOY): -71.10%

Stock Price History

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1 Year Price History

2 Years Price History

5 Years Price History

10 Years Price History

Download Financials (Excel)

Financial Charts

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Revenue & Net Income (Yearly)

Revenue & Net Income (Quarterly)

Operating Expenses (Yearly)

Operating Expenses (Quarterly)

Balance Sheet (Yearly)

Balance Sheet (Quarterly)

Assets Breakdown (Yearly)

Assets Breakdown (Quarterly)

Liabilities Breakdown (Yearly)

Liabilities Breakdown (Quarterly)

Earnings Per Share (EPS) History

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Financial Ratios

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Earnings History

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Balance Sheet (Yearly)

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Financial Ratios

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Date Current Ratio Debt/Equity Debt/Assets Interest Coverage Debt/EBITDA
2025-12-31 9.20x 0.00x 0.14x N/A -0.01x
2024-12-31 15.73x 0.00x 0.09x N/A -0.01x
2023-12-31 7.58x 0.01x 0.20x N/A -0.02x
2022-12-31 12.00x 0.01x 0.10x -31.44x -0.02x
2021-12-31 13.86x 0.00x 0.11x -184.74x -0.02x
2020-12-31 22.74x 0.03x 0.08x -211.85x -0.18x
2019-12-31 9.35x -0.07x 1.67x -2.35x -0.27x
2018-12-31 0.70x -0.25x 11.33x -14.62x -1.02x
2013-12-31 0.00x 0.12x 0.30x N/A N/A
2012-12-31 0.00x 0.40x 0.67x N/A N/A
2011-12-31 0.00x 0.95x 0.90x N/A N/A

Insider Trading

Date Insider Name Title Transaction Type Shares Price Value
Jan 21, 2026 Michael F Maclean N/A Sale 4.54K $72.45 $329.07K
Jan 21, 2026 Arthur A Levin N/A Sale 1.76K $72.45 $127.37K
Jan 21, 2026 W. Michael Flanagan N/A Sale 6.53K $72.45 $473.39K
Jan 21, 2026 Teresa Mccarthy N/A Sale 2.93K $72.45 $212.21K
Jan 21, 2026 Steven George Hughes N/A Sale 4.90K $72.45 $354.64K
Jan 21, 2026 Sarah Boyce N/A Sale 14.39K $72.45 $1.04M
Jan 07, 2026 Charles Calderaro III N/A Sale 3.73K $72.23 $269.20K
Jan 07, 2026 John B Moriarty N/A Sale 2.37K $72.23 $171.47K
Jan 07, 2026 Michael F Maclean N/A Sale 1.97K $72.23 $142.58K
Jan 07, 2026 Sarah Boyce N/A Sale 8.58K $72.23 $619.44K
Jan 07, 2026 Steven George Hughes N/A Sale 2.37K $72.23 $171.40K
Jan 07, 2026 Teresa Mccarthy N/A Sale 1.97K $72.23 $141.93K
Jan 07, 2026 W. Michael Flanagan N/A Sale 2.37K $72.23 $171.40K
Oct 22, 2025 Steven George Hughes N/A Sale 2.21K $47.54 $105.02K
Oct 15, 2025 Teresa Mccarthy N/A Sale 20.00K $50.15 $1.00M
Oct 03, 2025 Eric Mosbrooker N/A Sale 6.56K $45.38 $297.78K
Sep 22, 2025 Steven George Hughes N/A Sale 2.21K $40.58 $89.60K
Sep 05, 2025 Sarah Boyce N/A Sale 50.00K $49.95 $2.50M
Sep 05, 2025 Troy Edward Wilson N/A Sale 29.50K $50.00 $1.48M
Sep 03, 2025 Eric Mosbrooker N/A Sale 6.56K $47.07 $308.92K

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