AMLX on Nasdaq

Amylyx Pharmaceuticals

Logo: Amylyx Pharmaceuticals, Public domain, via Wikimedia Commons4

American biopharmaceutical company

Amylyx Pharmaceuticals, Inc is a biopharmaceutical company headquartered in Cambridge, Massachusetts. Amylyx is best known for AMX0035, an experimental therapy for amyotrophic lateral sclerosis.3 From Wikipedia, CC BY-SA 4.0

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Last updated Oct 16, 2026.

Overview

2013Founded1

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  • TickerAMLX on Nasdaq1
  • IndustryPharmaceutical Preparations1
  • HeadquartersCambridge1
  • Websitewww.amylyx.com
  • Incorporated inDE5
  • Business address55 Cambridge Parkway, Suite 6W, Cambridge, Ma 021425
  • Filer categoryNon-accelerated filer, Smaller reporting company5

Amylyx Pharmaceuticals, Inc is a biopharmaceutical company headquartered in Cambridge, Massachusetts. Amylyx is best known for AMX0035, an experimental therapy for amyotrophic lateral sclerosis. AMX0035 was approved for medical use in Canada as Albrioza, in June 2022, and in the United States, as Relyvrio, in September 2022. It was withdrawn in April, 2024.3

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

-100.0%Revenue growth, 20257
-47.4%Return on equity7
-$123.5MFree cash flow7

Financial statements

Revenue897$0 in 2025
0$100.0M$200.0M$300.0M$400.0M2021: $285.0K$285.0K20212022: $22.2M$22.2M2022+7700%2023: $380.8M$380.8M2023+1613%2024: $87.4M$87.4M2024−77%2025: $0$02025
Operating income897-$153.3M in 2025+85% since 2021
-$400.0M-$300.0M-$200.0M-$100.0M0$100.0M2021: -$82.7M-$82.7M20212022: -$201.3M-$201.3M2022+143%2023: $38.8M$38.8M20232024: -$314.7M-$314.7M20242025: -$153.3M-$153.3M2025−51%
Net income897-$144.7M in 2025+65% since 2021
-$400.0M-$300.0M-$200.0M-$100.0M0$100.0M2021: -$87.9M-$87.9M20212022: -$198.4M-$198.4M2022+126%2023: $49.3M$49.3M20232024: -$301.7M-$301.7M20242025: -$144.7M-$144.7M2025−52%

Every line of the income statement in the latest annual report, as filed.7

Period ending2025-12-312024-12-31
Product revenue, net$0$87.4M
Cost of sales$0$6.0M
Cost of sales - inventory impairment and loss on firm purchase commitments$0$118.7M
Acquired in-process research and development$0$36.2M
Research and development$90.4M$104.1M
Selling, general and administrative$62.9M$114.3M
Restructuring expenses$0$22.9M
Total operating expenses$153.3M$402.1M
Loss from operations-$153.3M-$314.7M
Interest income$9.3M$13.8M
Other expense, net-$700.0K-$1.2M
Total other income, net$8.6M$12.6M
Loss before income taxes-$144.7M-$302.1M
Provision (benefit) for income taxes$46.0K-$393.0K
Net loss-$144.7M-$301.7M
Net loss per share - basic-$1.53-$4.43
Net loss per share - diluted-$1.53-$4.43
Weighted-average shares used in computing net loss per share - basic94.6M shares68.1M shares
Weighted-average shares used in computing net loss per share - diluted94.6M shares68.1M shares

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The story

Amylyx Pharmaceuticals was founded in 2013 by Joshua Cohen and Justin Klee when the two were undergraduate students at Brown University. The two proposed that taurursodiol and sodium phenylbutyrate together might prevent dysfunction of mitochondria and the endoplasmic reticulum, safeguarding neurons. Klee and Cohen were advised by Rudolph E. Tanzi, who ultimately served as the founding chair of Amylyx's scientific research board. After Klee and Cohen were able to achieve strong results in pre-clinical research, Tanzi connected the two to his colleagues at Massachusetts General Hospital, which culminated in clinical trials and FDA approval. The company was granted $2.2 million by the ALS Association with funds raised through the Ice Bucket Challenge.

Amylyx went public in January 2022. The company's shares began trading on the Nasdaq on January 7, 2022 under the symbol AMLX.

After a disappointing Phase 3 trial of AMX0035 failed to produce significant differences versus a placebo, on April 4, 2024 Amylyx announced they would begin the process of withdrawing Albrioza and Relyviro from the North American market. Amylyx received praise for keeping its pre-approval promise to stop selling the drug if it turned out to be ineffective, an unusually ethical move which the FDA rarely requires. The company cited its independence from major pharmaceutical companies as a reason it could do so.

From Wikipedia’s article on Amylyx Pharmaceuticals, shared under CC BY-SA 4.0.6

Timeline

  1. Jan 7, 2022Went public Listed on NASDAQ1
  2. 2013Founded Founded1

Recent filings

  1. Oct 7, 20264
  2. Oct 5, 2026144
  3. Sep 14, 20264
  4. Sep 14, 20264
  5. Sep 14, 20264
  6. Sep 14, 20264
  7. Sep 14, 20264
  8. Sep 11, 2026144
  9. Sep 11, 2026144
  10. Sep 11, 2026144
  11. Sep 11, 2026144
  12. Sep 11, 2026144
  13. Sep 8, 20268-K
  14. Sep 2, 20264
  15. Aug 20, 2026424B5

Every filing from the last three years, summarized. The full record is on SEC EDGAR.2