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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
2022-11-11 VIKING GLOBAL INVESTORS LP 10% owner Conversion · Series C-1 Preferred Stock −4,870,536 0
2022-09-09 VIKING GLOBAL INVESTORS LP 10% owner Sale −312,353 $29.87 $9.3M 4,082,713
2022-09-09 VIKING GLOBAL INVESTORS LP 10% owner Sale −156,463 $30.90 $4.8M 3,926,250
2022-09-09 VIKING GLOBAL INVESTORS LP 10% owner Sale −6,654 $31.44 $209K 3,919,596
2022-09-09 VIKING GLOBAL INVESTORS LP 10% owner Sale −147,502 $29.87 $4.4M 1,927,968
2022-09-09 VIKING GLOBAL INVESTORS LP 10% owner Sale −73,886 $30.90 $2.3M 1,854,082
2022-09-09 VIKING GLOBAL INVESTORS LP 10% owner Sale −3,142 $31.44 $99K 1,850,940
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −80,715 $27.28 $2.2M 4,789,821
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −108,631 $28.16 $3.1M 4,681,190
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −159,026 $29.14 $4.6M 4,522,164
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −15,996 $30.59 $489K 4,506,168
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −111,102 $32.23 $3.6M 4,395,066
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −38,116 $27.28 $1.0M 2,261,884
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −51,298 $28.16 $1.4M 2,210,586
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −75,096 $29.14 $2.2M 2,135,490
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −7,554 $30.59 $231K 2,127,936
2022-09-08 VIKING GLOBAL INVESTORS LP 10% owner Sale −52,466 $32.23 $1.7M 2,075,470
2022-07-06 ALS Invest 1 B.V. 10% owner Sale −18,312 $19.54 $358K 5,937,577
2022-07-06 ALS Invest 1 B.V. 10% owner Sale −10,395 $20.60 $214K 5,927,182
2022-07-06 ALS Invest 1 B.V. 10% owner Sale −29,595 $21.32 $631K 5,897,587

Page 15 of 19 · 362 trades