Stock Fundamentals

Company Information

Company Name
Ionis Pharmaceuticals Inc
Sector
Healthcare
Industry
Biotechnology
Exchange
NASDAQ
ISIN: US4622221004
CIK: 0000874015
CUSIP: 462222100
Currency: USD
Full Time Employees: 1,069
Phone: 760 931 9200
Fiscal Year End: December
IPO Date: May 17, 1991
Description:

Ionis Pharmaceuticals, Inc., a commercial-stage biotechnology company, provides RNA-targeted medicines in the United States. The company offers TRYNGOLZA reduces triglyceride levels in adults with familial chylomicronemia syndrome (FCS) and acute pancreatitis; WAINUA for the treatment of the polyneuropathy of hereditary transthyretin-medicated amyloidosis (ATTRv-PN) in adults; and SPINRAZA for pediatric and adult patients with spinal muscular atrophy (SMA). It also provides QALSODY for the treatment of Amyotrophic Lateral Sclerosis (ALS); TEGSEDI for the treatment of ATTRv-PN in adults; and WAYLIVRA for treatment for FCS and familial partial lipodystrophy. It also develops products under Phase 3 clinical trials, such as Olezarsen for patients with hypertriglyceridemia (SHTG) and cardiovascular disease (CVD); Donidalorsen for patients with hereditary angioedema; and Zilganerse, a potential treatment for people with genetically confirmed Alexander disease, as well as ION582 that has completed Phase 2 clinical trial for the potential treatment of AS, a rare genetic neurological disease. In addition, the company develops Eplontersen to degrade mutant and wild-type TTR mRNA through binding to the TTR mRNA; Pelacarsen to inhibit the production of apolipoprotein(a) in the liver to offer a direct approach for reducing lipoprotein(a); Bepirovirsen to inhibit the production of viral proteins associated with hepatitis B virus; Sefaxersen to reduce the production of complement factor B and lower activation of the alternative complement pathway; and Ulefnersen to reduce the production of the fused in sarcoma, as well as other mid-stage pipeline investigational medicines. It has a strategic collaboration with Biogen for the treatment of neurological disorders; and collaboration and license agreement with GSK, AstraZeneca, Novartis, and Roche, as well as with Metagenomi. The company was incorporated in 1989 and is headquartered in Carlsbad, California.

Address:

2855 Gazelle Court, Carlsbad, CA, United States, 92010

Directors & Officers

Name Title Year Born
Dr. Brett P. Monia Ph.D. Founder, CEO & Director 1961
Ms. Elizabeth L. Hougen M.A., M.B.A., M.S. Executive VP of Finance & CFO 1962
Mr. Patrick R. O'Neil Esq. Executive VP, Chief Legal Officer, General Counsel & Corporate Secretary 1974
Mr. Kyle Jenne Executive VP & Chief Global Product Strategy Officer 1977
Dr. Richard S. Geary Ph.D. Strategic Consultant 1958
Dr. Holly Kordasiewicz Ph.D. Executive VP & Chief Development Officer NA
Dr. Eric E. Swayze Ph.D. Executive Vice President of Research 1966
Mr. Charles G. Asare M.D., M.P.H. VP & Head of Drug Safety NA
Mr. Brian Birchler Executive Vice President of Corporate & Development Operations 1966
Dr. Sotirios Tsimikas M.D. Senior Vice President of Global Cardiovascular Development NA

Institutional Holders

Holder Name Shares Date Reported % Out Value % Change
FMR Inc 24.07M Dec 31, 2025 14.86% $0.10 1.62%
Vanguard Group Inc 16.44M Dec 31, 2025 10.15% $0.02 -0.25%
T. Rowe Price Investment Management,Inc. 13.16M Sep 30, 2025 8.12% $0.53 -18.02%
Capital World Investors 12.72M Sep 30, 2025 7.85% $0.11 1.46%
BlackRock Inc 10.45M Sep 30, 2025 6.45% $0.01 -4.12%
Lombard Odier Asset Management (Europe) Ltd 6.49M Sep 30, 2025 4.01% $0.45 0.00%
Wellington Management Company LLP 6.26M Dec 31, 2025 3.87% $0.09 -4.99%
Bellevue Group AG 4.80M Dec 31, 2025 2.96% $7.20 -23.10%
State Street Corp 4.39M Sep 30, 2025 2.71% $0.01 -3.13%
Deep Track Capital, LP 3.81M Sep 30, 2025 2.35% $6.95 -22.15%
Geode Capital Management, LLC 3.07M Sep 30, 2025 1.89% $0.01 6.06%
Two Sigma Advisers, LLC 3.05M Dec 31, 2025 1.88% $0.47 47.22%
Tweedy, Browne Co LLC 2.90M Sep 30, 2025 1.79% $16.48 0.32%
T. Rowe Price Associates, Inc. 2.73M Sep 30, 2025 1.69% $0.02 -12.68%
Two Sigma Investments LLC 2.66M Dec 31, 2025 1.64% $0.30 68.70%
Citadel Advisors Llc 2.40M Sep 30, 2025 1.48% $0.02 60.68%
Deerfield Management Co 1.98M Dec 31, 2025 1.22% $2.00 0.00%
Baker Bros Advisors LP 1.79M Dec 31, 2025 1.11% $0.83 216.13%
American Century Companies Inc 1.62M Dec 31, 2025 1.00% $0.06 17.85%
Charles Schwab Investment Management Inc 1.54M Dec 31, 2025 0.95% $0.02 1.44%

Shares Statistics

Shares Outstanding: 161.97M
Shares Float: 163.76M
% Insiders: 78.20%
% Institutions: 10,755.00%
Short % Float: 12.62%

🏆 Top 10 Institutional Holders

Rank Holder Name Shares Held % of Shares Change Date Reported
1 FMR Inc 24.07M 14.86% ▲ 1.62% Dec 31, 2025
2 Vanguard Group Inc 16.44M 10.15% ▼ 0.25% Dec 31, 2025
3 T. Rowe Price Investment Management,Inc. 13.16M 8.12% ▼ 18.02% Sep 30, 2025
4 Capital World Investors 12.72M 7.85% ▲ 1.46% Sep 30, 2025
5 BlackRock Inc 10.45M 6.45% ▼ 4.12% Sep 30, 2025
6 Lombard Odier Asset Management (Europe) Ltd 6.49M 4.01% ▲ 0.00% Sep 30, 2025
7 Wellington Management Company LLP 6.26M 3.87% ▼ 4.99% Dec 31, 2025
8 Bellevue Group AG 4.80M 2.96% ▼ 23.10% Dec 31, 2025
9 State Street Corp 4.39M 2.71% ▼ 3.13% Sep 30, 2025
10 Deep Track Capital, LP 3.81M 2.35% ▼ 22.15% Sep 30, 2025

Valuation Metrics

Enterprise Value: $12.39B
Trailing P/E: 0.00
Forward P/E: 90.91

Financial Highlights

Market Cap: $13.14B
EBITDA: $-369.24M
PEG Ratio: $25.70
Book Value: $3.00
Earnings/Share: $-1.61
Profit Margin: -40.41%
Operating Margin: -105.47%
ROA (TTM): -7.31%
ROE (TTM): -70.80%
Revenue (TTM): $943.71M
Revenue/Share (TTM): $5.90
Earnings Growth (YOY): -43.70%
Revenue Growth (YOY): -10.30%

Stock Price History

1 Year Price History

2 Years Price History

5 Years Price History

10 Years Price History

Download Financials (Excel)

Financial Charts

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

Financial Ratios (Yearly)

Financial Ratios (Quarterly)

Earnings History

Balance Sheet (Yearly)

Financial Ratios

Date Current Ratio Debt/Equity Debt/Assets Interest Coverage Debt/EBITDA
2025-12-31 1.95x 2.42x 0.86x -5.23x -4.13x
2024-12-31 8.47x 2.13x 0.80x -5.25x -3.55x
2023-12-31 5.90x 3.32x 0.87x -4.34x -5.44x
2022-12-31 7.07x 2.08x 0.77x -50.50x -5.23x
2021-12-31 9.73x 1.59x 0.70x -3.23x -236.06x
2020-12-31 7.34x 0.96x 0.65x -3.82x -5.22x
2019-12-31 9.97x 0.52x 0.48x 7.47x 2.02x
2018-12-31 7.88x 0.61x 0.56x -1.37x -34.07x
2017-12-31 5.20x 1.80x 0.68x 0.69x 16.36x
2016-12-31 5.96x 5.04x 0.89x -1.19x -13.46x
2015-12-31 5.62x 2.03x 0.79x -2.06x -9.93x
2014-12-31 7.25x 1.78x 0.73x -2.15x -20.10x
2013-12-31 7.52x 0.61x 0.55x -2.67x -5.55x
2012-12-31 5.70x 1.24x 0.67x -3.26x -5.31x
2011-12-31 4.73x 1.28x 0.65x -4.25x -3.89x
2010-12-31 4.56x 0.61x 0.56x -3.65x -3.84x
2009-12-31 5.35x 0.48x 0.54x -2.17x -8.69x
2008-12-31 4.16x 2.60x 0.82x -2.33x 42.46x
2007-12-31 3.33x 195.07x 0.96x -4.35x -6.50x
2006-12-31 8.20x 2.05x 0.62x -7.22x -2.40x
2005-12-31 4.45x 55.44x 0.98x -2.82x -3.71x
2004-12-31 2.89x -3.43x 1.35x -5.22x -3.37x
2003-12-31 5.26x 3.42x 0.80x -4.23x -3.54x
2002-12-31 4.22x 1.38x 0.65x -3.07x -5.36x
2001-12-31 6.82x 0.61x 0.47x -3.02x -3.46x
2000-12-31 9.10x 1.61x 0.64x N/A -4.56x
1999-12-31 3.95x 4.88x 0.99x N/A -0.10x
1998-12-31 2.81x -0.86x 1.04x N/A -0.13x
1997-12-31 3.35x 0.07x 0.70x N/A -0.08x
1996-12-31 3.44x 0.11x 0.42x N/A -0.23x
1995-12-31 4.16x 0.07x 0.24x N/A -0.22x
1994-12-31 3.98x 0.05x 0.31x N/A -0.13x
1993-12-31 4.83x 0.08x 0.26x N/A -0.32x
1992-12-31 4.28x 0.15x 0.28x N/A -0.31x
1991-12-31 8.60x 0.02x 0.20x N/A -0.10x
1990-12-31 1.27x 0.18x 0.60x N/A -0.07x

Insider Trading

Date Insider Name Title Transaction Type Shares Price Value
Feb 13, 2026 Eric Swayze N/A Sale 15.64K $81.76 $1.28M
Feb 11, 2026 B Lynne Parshall N/A Sale 5.00K $82.72 $413.60K
Feb 06, 2026 Brett P Monia N/A Sale 29.43K $85.79 $2.52M
Feb 02, 2026 C Frank Bennett N/A Sale 85.09K $82.93 $7.06M
Jan 30, 2026 Eugene Schneider N/A Sale 6.18K $83.45 $515.64K
Jan 30, 2026 Patrick R O'neil N/A Sale 6.18K $83.53 $516.13K
Jan 30, 2026 Patrick R O'neil N/A Sale 6.18K $83.53 $516.13K
Jan 30, 2026 Eric Swayze N/A Sale 6.18K $82.93 $512.42K
Jan 30, 2026 Elizabeth L Hougen N/A Sale 6.99K $83.24 $581.68K
Jan 30, 2026 C Frank Bennett N/A Sale 5.89K $82.95 $488.16K
Jan 30, 2026 C Frank Bennett N/A Sale 5.89K $82.95 $488.16K
Jan 30, 2026 Brian Birchler N/A Sale 6.18K $83.03 $513.04K
Jan 30, 2026 Brett P Monia N/A Sale 62.97K $82.72 $5.21M
Jan 22, 2026 Shannon L Devers N/A Sale 3.98K $81.34 $323.49K
Jan 16, 2026 Brett P Monia N/A Sale 44.03K $74.82 $3.29M
Jan 16, 2026 Brian Birchler N/A Sale 8.48K $75.11 $636.93K
Jan 16, 2026 C Frank Bennett N/A Sale 8.98K $75.15 $674.62K
Jan 16, 2026 Elizabeth L Hougen N/A Sale 12.92K $75.22 $971.99K
Jan 16, 2026 Eric Swayze N/A Sale 9.88K $75.34 $744.66K
Jan 16, 2026 Eric Swayze N/A Sale 49.00 $75.97 $3.72K

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