The law firm of Kirby McInerney LLP reminds investors of its investigation on behalf of Alnylam Pharmaceuticals, Inc. (“Alnylam” or the “Company”) (NASDAQ: ALNY) investors concerning the Company’s and/or members of its senior management’s possible violation of the federal securities laws or other unlawful business practices.

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What Happened?

On July 30, 2026, Alnylam announced second quarter 2026 financial results. Among other things, the Company reported it has “lowered our TTR product sales guidance for full-year 2026 to reflect learnings from the initial phase of our launch in the evolving ATTR-CM market, in particular the normalization of growth in second line volume after satisfying pent-up demand from patients waiting for a new therapy.” As a result, the Company lowered its total projected TTR net product revenues by approximately $200 million.

On this news, shares of Alnylam fell $81.14 per share, or approximately 28%, to close at on $205.48 per share July 30, 2026.

What Should I Do?

At this stage, no lawsuit has been filed. The investigation is ongoing to determine whether claims may be brought under federal securities laws.

If you purchased or otherwise acquired Alnylam securities, have information, or would like to learn more about this investigation, please contact Lauren Molinaro of Kirby McInerney LLP by email at investigations@kmllp.com, or fill out the contact form below, to discuss your rights or interests with respect to these matters at no cost.

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Kirby McInerney LLP is a New York-based plaintiffs’ law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. The firm’s efforts on behalf of shareholders in securities litigation have resulted in recoveries totaling billions of dollars. Additional information about the firm can be found at Kirby McInerney LLP’s website.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.

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