Mailing Address 43 THORNDIKE STREET CAMBRIDGE MA 02141
Business Address 43 THORNDIKE STREET CAMBRIDGE MA 02141 617-683-0917
Amylyx Pharmaceuticals, Inc. CIK#: 0001658551 (see all company filings)

SIC: 2834 - PHARMACEUTICAL PREPARATIONS
State location: MA | State of Inc.: DE | Fiscal Year End: 1231
(CF Office: 03 Life Sciences)
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Items 1 - 100  0001658551 Filings RSS Feed
Filings Format Description Filed/Effective File/Film Number
ARS  Documents Annual Report to Security Holders
Acc-no: 0000950170-25-057669 (34 Act)  Size: 6 MB
2025-04-24 001-41199
25863567
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0000950170-25-057667 (34 Act)  Size: 856 KB
2025-04-24 001-41199
25863562
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0000950170-25-057665 (34 Act)  Size: 5 MB
2025-04-24 001-41199
25863551
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-049581 Size: 7 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-049567 Size: 5 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-049560 Size: 5 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-049513 Size: 5 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-049495 Size: 5 KB
2025-04-02
EFFECT  Documents Notice of Effectiveness
Acc-no: 9999999995-25-000794 (33 Act)  Size: 1 KB
2025-03-26 333-285525
25774978
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001193125-25-061425 Size: 6 KB
2025-03-24
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-043849 Size: 4 KB
2025-03-24
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-036717 Size: 7 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-036712 Size: 7 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-036711 Size: 7 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-036708 Size: 7 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-036707 Size: 9 KB
2025-03-10
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-25-002463 Size: 40 KB
2025-03-05 333-285525
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-033725 Size: 5 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-033719 Size: 5 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-033717 Size: 5 KB
2025-03-05
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001193125-25-045578 (33 Act)  Size: 61 KB
2025-03-04 333-285534
25704259
S-3  Documents Registration statement under Securities Act of 1933
Acc-no: 0001193125-25-044854 (33 Act)  Size: 960 KB
2025-03-04 333-285525
25701559
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0000950170-25-031309 (34 Act)  Size: 14 MB
2025-03-04 001-41199
25701355
POSASR  Documents Post-effective Amendment to an automatic shelf registration statement
Acc-no: 0001193125-25-044765 (33 Act)  Size: 351 KB
2025-03-04 333-270505
25701320
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-25-031303 (34 Act)  Size: 411 KB
2025-03-04 001-41199
25701298
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-027833 Size: 5 KB
2025-02-26
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000950170-25-021288 (34 Act)  Size: 12 KB
2025-02-14 005-93265
25629584
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000950170-25-021226 (34 Act)  Size: 10 KB
2025-02-14 005-93265
25628915
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-015701 Size: 6 KB
2025-02-06
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-014620 Size: 5 KB
2025-02-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-014610 Size: 5 KB
2025-02-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-014607 Size: 5 KB
2025-02-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-009913 Size: 4 KB
2025-01-28
SCHEDULE 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000902664-25-000221 (34 Act)  Size: 18 KB
2025-01-14 005-93265
25529985
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001193125-25-004547 (34 Act)  Size: 367 KB
2025-01-10 001-41199
25523997
424B5  Documents Prospectus [Rule 424(b)(5)]
Acc-no: 0001193125-25-004537 (33 Act)  Size: 701 KB
2025-01-10 333-270505
25523895
424B5  Documents Prospectus [Rule 424(b)(5)]
Acc-no: 0001193125-25-004002 (33 Act)  Size: 669 KB
2025-01-10 333-270505
25520094
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-003533 Size: 5 KB
2025-01-08
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-25-003531 Size: 5 KB
2025-01-08
8-K  Documents   Interactive Data Current report, item 7.01
Acc-no: 0001193125-24-286212 (34 Act)  Size: 145 KB
2024-12-30 001-41199
241586962
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-132885 Size: 5 KB
2024-12-03
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000932471-24-000840 (34 Act)  Size: 6 KB
2024-11-12 005-93265
241446459
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-24-122833 (34 Act)  Size: 8 MB
2024-11-07 001-41199
241433340
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-24-122779 (34 Act)  Size: 376 KB
2024-11-07 001-41199
241433112
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-122640 Size: 6 KB
2024-11-06
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000932471-24-000246 (34 Act)  Size: 5 KB
2024-11-04 005-93265
241421358
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001193125-24-244246 (34 Act)  Size: 65 KB
2024-10-25 005-93265
241397986
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001193125-24-238572 (34 Act)  Size: 165 KB
2024-10-17 001-41199
241376100
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-111812 Size: 5 KB
2024-10-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-111811 Size: 5 KB
2024-10-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-111809 Size: 5 KB
2024-10-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-111805 Size: 5 KB
2024-10-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-109397 Size: 6 KB
2024-09-25
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-106915 Size: 6 KB
2024-09-16
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-106910 Size: 7 KB
2024-09-16
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-104737 Size: 4 KB
2024-09-09
4/A  Documents [Amend] Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-104191 Size: 8 KB
2024-09-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-104186 Size: 4 KB
2024-09-05
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001193125-24-207220 (34 Act)  Size: 77 KB
2024-08-26 005-93265
241242807
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-24-093311 (34 Act)  Size: 7 MB
2024-08-08 001-41199
241186020
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-24-093304 (34 Act)  Size: 367 KB
2024-08-08 001-41199
241185999
8-K  Documents   Interactive Data Current report, item 2.01
Acc-no: 0001193125-24-177000 (34 Act)  Size: 143 KB
2024-07-10 001-41199
241108672
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001086364-24-008253 (34 Act)  Size: 12 KB
2024-07-08 005-93265
241105245
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0000950170-24-076339 (34 Act)  Size: 932 KB
2024-06-21 001-41199
241061326
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-070811 Size: 5 KB
2024-06-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-070804 Size: 5 KB
2024-06-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-070797 Size: 5 KB
2024-06-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-070778 Size: 5 KB
2024-06-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-070769 Size: 5 KB
2024-06-07
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001193125-24-156050 (34 Act)  Size: 153 KB
2024-06-06 001-41199
241025068
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-061294 Size: 5 KB
2024-05-16
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-061293 Size: 4 KB
2024-05-16
144  Documents Report of proposed sale of securities
Acc-no: 0001950047-24-003736 (33 Act)  Size: 4 KB
2024-05-15 001-41199
24951537
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-24-056269 (34 Act)  Size: 6 MB
2024-05-09 001-41199
24928537
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-24-056254 (34 Act)  Size: 321 KB
2024-05-09 001-41199
24928503
ARS  Documents Annual Report to Security Holders
Acc-no: 0000950170-24-047247 (34 Act)  Size: 6 MB
2024-04-24 001-41199
24866715
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0000950170-24-047244 (34 Act)  Size: 896 KB
2024-04-24 001-41199
24866708
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0000950170-24-047243 (34 Act)  Size: 5 MB
2024-04-24 001-41199
24866706
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-045698 Size: 9 KB
2024-04-18
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-045696 Size: 7 KB
2024-04-18
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-045695 Size: 7 KB
2024-04-18
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-045694 Size: 7 KB
2024-04-18
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-045693 Size: 7 KB
2024-04-18
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001193125-24-091463 (34 Act)  Size: 151 KB
2024-04-10 001-41199
24834369
8-K  Documents   Interactive Data Current report, items 2.05, 7.01, 8.01, and 9.01
Acc-no: 0001193125-24-086609 (34 Act)  Size: 183 KB
2024-04-04 001-41199
24821609
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-032246 Size: 5 KB
2024-03-15
3  Documents Initial statement of beneficial ownership of securities
Acc-no: 0000950170-24-032235 Size: 11 KB
2024-03-15
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001193125-24-067471 (34 Act)  Size: 145 KB
2024-03-14 001-41199
24748118
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001193125-24-064391 (34 Act)  Size: 96 KB
2024-03-11 005-93265
24736678
8-K  Documents   Interactive Data Current report, items 7.01, 8.01, and 9.01
Acc-no: 0001193125-24-062878 (34 Act)  Size: 194 KB
2024-03-08 001-41199
24732322
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-027923 Size: 5 KB
2024-03-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-027922 Size: 5 KB
2024-03-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-027918 Size: 7 KB
2024-03-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-027921 Size: 5 KB
2024-03-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-022434 Size: 8 KB
2024-02-28
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-022413 Size: 7 KB
2024-02-28
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-022410 Size: 7 KB
2024-02-28
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-022400 Size: 7 KB
2024-02-28
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0000950170-24-021472 Size: 5 KB
2024-02-27
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001193125-24-042863 (33 Act)  Size: 66 KB
2024-02-22 333-277274
24665286