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CIK 0001658551 · Non-accelerated filer<br>Smaller reporting company

Amylyx Pharmaceuticals, Inc.

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Ticker
AMLX
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
464600503
Phone
617-682-0917
Business address
55 CAMBRIDGE PARKWAY, SUITE 6W, CAMBRIDGE, MA, 02142
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$10,951,125
in 9 filings, $8.0M under 10b5-1 plans

Net −$10,951,125. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Cohen Joshua B −$4.0M Co-Chief Executive Officer sold 4% of stake
  2. Klee Justin B. −$4.0M Co-Chief Executive Officer sold 4% of stake
  3. FRATES JAMES M −$1.6M Chief Financial Officer sold 18% of stake
  4. MILNE GEORGE M JR −$831K Director sold 4% of stake
  5. Bedrosian Camille L −$325K Chief Medical Officer sold 3% of stake
Date Insider Transaction Shares Price Value Owned after
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion · Series C-1 Preferred Stock −974,107 0
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion · Series C-2 Preferred Stock −1,621,544 0
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion +10,415,650 10,415,650
2022-01-11 Morningside Venture Investments Ltd 10% owner Purchase +263,158 $19.00 $5.0M 10,678,808
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion · Series A Preferred Stock −1,409,035 0
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion · Series B Preferred Stock −6,410,964 0
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion · Series C-1 Preferred Stock −974,107 0
2022-01-11 Morningside Venture Investments Ltd 10% owner Conversion · Series C-2 Preferred Stock −1,621,544 0
2022-01-11 VIKING GLOBAL INVESTORS LP 10% owner Conversion +4,870,536 4,870,536
2022-01-11 VIKING GLOBAL INVESTORS LP 10% owner Purchase +2,300,000 $19.00 $43.7M 2,300,000
2022-01-06 FRATES JAMES M Chief Financial Officer Conversion +19,482 19,482
2022-01-06 FRATES JAMES M Chief Financial Officer Conversion · Series C-1 Preferred Stock −19,482 0
2022-01-06 FONTEYNE PAUL R. Director Purchase +3,947 $19.00 $75K 3,947
2022-01-06 FONTEYNE PAUL R. Director Grant or award · Stock Option (Right to Buy) +8,400 8,400
2022-01-06 Cheng Isaac Director Conversion +1,409,035 1,409,035
2022-01-06 Cheng Isaac Director Conversion +6,410,964 7,819,999
2022-01-06 Cheng Isaac Director Conversion +974,107 8,794,106
2022-01-06 Cheng Isaac Director Conversion +1,621,544 10,415,650
2022-01-06 Cheng Isaac Director Purchase +6,578 $19.00 $125K 6,578
2022-01-06 Cheng Isaac Director Conversion · Series A Preferred Stock −1,409,035 0

Page 17 of 19 · 362 trades