Amylyx Pharmaceuticals Inc

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K, or Annual Report, contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. All statements other than statements of historical facts contained in this Annual Report are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “would” or the negative of these terms or other comparable terminology. These statements are not guarantees of future results or performance and involve substantial risks and uncertainties. Forward-looking statements in this Annual Report include, but are not limited to, express or implied statements about:

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our ability to maintain existing regulatory approvals of AMX0035 and obtain additional regulatory approvals of AMX0035 and any other current or future product candidates;

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our ability to continue to successfully commercialize and market AMX0035 and to successfully commercialize and market any other current or future product candidates, if approved, and the timing of any commercialization and marketing efforts;

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our ability to contract with third-party suppliers, manufacturers and other service providers and their ability to perform adequately and to produce sufficient quantities of clinical and commercial supplies;

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the market size, opportunity, demand and growth potential for AMX0035 and any other current or future product candidates, if approved;

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our ability to build and maintain our own sales and marketing capabilities, or seek collaborative partners, to commercialize AMX0035 and any other current or future product candidates, if approved;

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our ability to obtain funding for our operations;

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the initiation, timing, progress and results of our research and development activities, preclinical studies and clinical trials, including our global Phase 3 clinical trial of AMX0035 for the treatment of amyotrophic lateral sclerosis, or ALS, known as the PHOENIX trial, our Phase 3 global clinical trial of AMX0035 for the treatment of progressive supranuclear palsy, or PSP, known as the ORION trial, and our Phase 2 clinical trial of AMX0035 for the treatment of Wolfram syndrome, or WS, known as the HELIOS trial;

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our ability to retain the continued service of our key executives and to identify, hire and retain additional qualified professionals;

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our ability to successfully complete our ongoing clinical trials of AMX0035 and to advance any other current or future product candidates into, and successfully complete, preclinical studies and clinical trials;

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our ability to successfully recruit and enroll suitable patients in our clinical trials;

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the timing or likelihood of the accomplishment of various scientific, clinical, regulatory filings and approvals and other product development objectives, including the timing of a potential resubmission of a Marketing Authorisation Application, or MAA, for AMX0035 for the treatment of ALS in the European Union, or the EU, pending the results of our global Phase 3 PHOENIX clinical trial;

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the pricing and reimbursement of AMX0035 in the U.S., Canada and in any other jurisdictions in which AMX0035 is approved, if any, and of any other current or future product candidates, if approved;

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the rate and degree of market acceptance of AMX0035 and any other current or future product candidates, if approved, by physicians, patients, third-party payors and others in the medical community;

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the implementation of our business model and strategic plans for our business, products, product candidates and technology;

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the scope of protection we are able to establish and maintain for intellectual property rights covering our products, product candidates and technology;

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developments relating to our competitors and our industry, including any regulatory developments;

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our estimates regarding expenses, revenue, capital requirements, cash runway and future needs for additional financing;

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our financial performance, including our ability to maintain profitability;

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fluctuations of our quarterly and annual operating results and the related effects on our stock price;

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the effect of global economic uncertainty and financial market volatility caused by economic effects of rising inflation and interest rates, global health crises, geopolitical events, changes in international trade relationships and military conflicts, such as the ongoing conflict between Russia and Ukraine and the conflict in Israel, on any of the foregoing or other aspects of our business or operations; and

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other statements about future events, including those listed under the section titled “Risk Factors.”

Any forward-looking statements in this Annual Report reflect our current views with respect to future events and with respect to our future financial performance, and involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by these forward-looking statements. Factors that may cause actual results to differ materially from current expectations include, among other things, those described under Part I, Item 1A, “Risk Factors” and elsewhere in this Annual Report. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.

All of our forward-looking statements are as of the date of this Annual Report only. In each case, actual results may differ materially from such forward-looking information. We can give no assurance that such expectations or forward-looking statements will prove to be correct. An occurrence of or any material adverse change in one or more of the risk factors or risks and uncertainties referred to in this Annual Report or included in our other public disclosures or our other periodic reports or other documents or filings filed with or furnished to the Securities and Exchange Commission, or the SEC, could materially and adversely affect our business, prospects, financial condition and results of operations. Except as required by law, we do not undertake or plan to update or revise any such forward-looking statements to reflect actual results, changes in plans, assumptions, estimates or projections or other circumstances affecting such forward-looking statements occurring after the date of this Annual Report, even if such results, changes or circumstances make it clear that any forward-looking information will not be realized. Any public statements or disclosures by us following this Annual Report that modify or impact any of the forward-looking statements contained in this Annual Report will be deemed to modify or supersede such statements in this Annual Report.

We may from time to time provide estimates, projections and other information concerning our industry, the general business environment, and the markets for certain diseases, including estimates regarding the potential size of those markets and the estimated incidence and prevalence of certain medical conditions. Information that is based on estimates, forecasts, projections, market research or similar methodologies is inherently subject to uncertainties, and actual events, circumstances or numbers, including actual disease prevalence rates and market size, may differ materially from the information reflected in this Annual Report. Unless otherwise expressly stated, we obtained this industry, business information, market data, prevalence information and other data from reports, research surveys, studies and similar data prepared by market research firms and other third parties, industry, medical and general publications, government data, and similar sources, in some cases applying our own assumptions and analysis that may, in the future, prove not to have been accurate.

TRADEMARKS

Solely for convenience, our trademarks and trade names in this report are referred to without the ® and ™ symbols, but such references should not be construed as any indicator that we will not assert, to the fullest extent under applicable law, our rights thereto.

PART I