Annual Meeting of

Stockholders

June 1, 2023

Every Moment Matters...

Nasdaq: IONS

in the Discovery, Development & Delivery

of Life Transforming Genetic Medicines

Participating in Today's Presentation

  • There will be a Q&A session at the end of today's program, following prepared remarks
  • Questions may be submitted at any time during the live event
  • Simply type your question into the "Submit a Question" field located on your screen and clicking "Send"
  • A replay will be available on the Investors section of the Ionis website within 24 hours of the live event
  • Today's slides may be downloaded from the Investors section of the Ionis website under Events

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Forward-Looking Statements

This presentation includes forward-looking statements regarding our business, financial guidance and the therapeutic and commercial potential of QALSODYTM (tofersen), SPINRAZA® (nusinersen), TEGSEDI® (inotersen), WAYLIVRA® (volanesorsen), eplontersen, olezarsen, donidalorsen, ulefnersen, pelacarsen, bepirovirsen, Ionis' technologies, and Ionis' other products in development. Any statement describing Ionis' goals, expectations, financial or other projections, intentions or beliefs is a forward-looking statement and should be considered an at-risk statement. Such statements are subject to certain risks and uncertainties including but not limited to those related to our commercial products and the medicines in our pipeline, and particularly those inherent in the process of discovering, developing and commercializing medicines that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such medicines. Ionis' forward-looking statements also involve assumptions that, if they never materialize or prove correct, could cause its results to differ materially from those expressed or implied by such forward-looking statements. Although Ionis' forward-looking statements reflect the good faith judgment of its management, these statements are based only on facts and factors currently known by Ionis. As a result, you are cautioned not to rely on these forward-looking statements. These and other risks concerning Ionis' programs are described in additional detail in Ionis' annual report on our Form 10-K for the year ended December 31, 2022, and our most recent Form 10-Q quarterly filing, which are on file with the SEC. Copies of these and other documents are available at www.ionispharma.com.

In this presentation, unless the context requires otherwise, "Ionis," "Company," "we," "our," and "us" refers to Ionis Pharmaceuticals and its subsidiaries.

Ionis Pharmaceuticals® is a registered trademark of Ionis Pharmaceuticals, Inc. Akcea Therapeutics® is a registered trademark of Akcea Therapeutics, Inc. TEGSEDI® is a trademark of Akcea Therapeutics, Inc. WAYLIVRA® is a registered trademark of Akcea Therapeutics, Inc. QALSODYTM is a trademark of Biogen. SPINRAZA® is a registered trademark of Biogen.

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On Today's Call

Brett Monia, Ph.D.

Beth Hougen

Onaiza Cadoret

Chief Executive Officer

Chief Financial Officer

Executive Vice President,

Chief Global Product Strategy and

Operations Officer

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Building Momentum by Executing on Strategic Priorities

Deliver an abundance of genetic medicines to the market

Establish an integrated commercial organization

Expand and diversify our technology platform

Strengthen our financial foundation to support our strategic priorities

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Disclaimer

Ionis Pharmaceuticals Inc. published this content on 01 June 2023 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 02 June 2023 15:02:05 UTC.