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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1658551	Amylyx Pharmaceuticals Inc.	AMLX	()	DE

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1543112	Ltd Investments Venture Morningside	2Nd Floor, Le Prince De Galles 3-5 Avenue Des Citronniers Monaco O9 MC 98000		No	No	Yes	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	Disposition	2023-02-22	47,888	$34.70	7,532,710	No	4	S	Direct
Common Stock	Disposition	2023-02-22	2,112	$35.34	7,530,598	No	4	S	Direct

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

Footnotes

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.25 to $35.25, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.
The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.28 to $35.45, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.
Frances Anne Elizabeth Richard, Jill Marie Franklin, Peter Stuart Allenby Edwards and Cheung Ka Ho, the directors of Morningside Venture Investments Limited ("MVIL"), share voting and dispositive control over the shares held by MVIL.