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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1658551	Amylyx Pharmaceuticals Inc.	AMLX	Pharmaceutical Preparations (2834)	464600503

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1898314	B. Justin Klee	C/O Amylyx Pharmaceuticals, Inc. 43 Thorndike Street Cambridge MA 02141	Co-Chief Executive Officer	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2023-01-06	4,122	$36.08	2,894,463	No	4	S	Direct
Common Stock	Acquisiton	2023-01-06	1,846	$36.79	2,892,617	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Footnotes

Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. These sales were automatic and intended to qualify under Rule 10b5-1.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $35.59 to $36.58. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $36.59 to $37.01. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.