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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
1969821	Karen Firestone	C/O Amylyx Pharmaceuticals, Inc. 43 Thorndike Street Cambridge MA 02141		Yes	No	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	2023-03-16	1,000	$31.99	1,000	No	4	P	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to Buy)	Acquisiton	2023-03-16	27,403	$0.00	27,403	$32.08

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
27,403		2033-03-16	No	4	A	Direct

Footnotes

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $31.96 to $32.00. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request
One-third of the shares subject to the option shall vest on the first anniversary of the date of grant, and the remaining two-thirds will vest in equal monthly installments over two years, provided, however, that all vesting shall cease if the director resigns from the Board or otherwise ceases to serve as a director of the Issuer.