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Mailing Address 314 MAIN STREET, SUITE 04-200 CAMBRIDGE MA 02142
Business Address 314 MAIN STREET, SUITE 04-200 CAMBRIDGE MA 02142 (857) 400-9491
Theseus Pharmaceuticals, Inc. CIK#: 0001745020 (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 - 40  0001745020 Filings RSS Feed
Filings Format Description Filed/Effective File/Film Number
15-12G  Documents Securities registration termination [Section 12(g)]
Acc-no: 0001140361-24-009374 (34 Act)  Size: 12 KB
2024-02-26 001-40869
24673777
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0001214659-24-003018 (34 Act)  Size: 94 KB
2024-02-16 005-92944
24648161
EFFECT  Documents Notice of Effectiveness
Acc-no: 9999999995-24-000479 (33 Act)  Size: 1 KB
2024-02-15 333-268125
24645668
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001140361-24-007885 (33 Act)  Size: 21 KB
2024-02-14 333-270382
24636107
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001140361-24-007882 (33 Act)  Size: 21 KB
2024-02-14 333-260158
24636095
POS AM  Documents Post-Effective amendments for registration statement
Acc-no: 0001140361-24-007880 (33 Act)  Size: 19 KB
2024-02-14 333-268125
24636076
8-K  Documents   Interactive Data Current report, items 2.01, 3.01, 3.03, 5.02, 5.03, 8.01, and 9.01
Acc-no: 0001104659-24-023155 (34 Act)  Size: 415 KB
2024-02-14 001-40869
24633894
SC TO-T/A  Documents [Amend] Tender offer statement by Third Party
Acc-no: 0001140361-24-007785 (34 Act)  Size: 173 KB
2024-02-14 005-92944
24633817
SC 14D9/A  Documents [Amend] Solicitation, recommendation statements
Acc-no: 0001104659-24-023123 (34 Act)  Size: 35 KB
2024-02-14 005-92944
24633440
25-NSE  Documents Notification filed by national security exchange to report the removal from listing and registration of matured, redeemed or retired securities
Acc-no: 0001354457-24-000073 (34 Act)  Size: 2 KB
2024-02-14 001-40869
24633132
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001193125-24-033273 (34 Act)  Size: 247 KB
2024-02-13 005-92944
24624019
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001104659-24-011693 Size: 27 KB
2024-02-07
SC 14D9/A  Documents [Amend] Solicitation, recommendation statements
Acc-no: 0001104659-24-011690 (34 Act)  Size: 22 KB
2024-02-07 005-92944
24605873
SC TO-T/A  Documents [Amend] Tender offer statement by Third Party
Acc-no: 0001140361-24-006158 (34 Act)  Size: 44 KB
2024-02-07 005-92944
24605817
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-001303 Size: 45 KB
2024-02-02 005-92944
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-001302 Size: 44 KB
2024-02-02 005-92944
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001104659-24-007989 Size: 32 KB
2024-01-30
SC 14D9/A  Documents [Amend] Solicitation, recommendation statements
Acc-no: 0001104659-24-007988 (34 Act)  Size: 34 KB
2024-01-30 005-92944
24575998
SC TO-T/A  Documents [Amend] Tender offer statement by Third Party
Acc-no: 0001140361-24-004440 (34 Act)  Size: 750 KB
2024-01-30 005-92944
24575948
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-000809 Size: 51 KB
2024-01-22 005-92944
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-000810 Size: 55 KB
2024-01-22 005-92944
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0001214659-24-000664 (34 Act)  Size: 98 KB
2024-01-12 005-92944
24530504
SC 14D9  Documents Solicitation, recommendation statements
Acc-no: 0001104659-24-002840 (34 Act)  Size: 650 KB
2024-01-10 005-92944
24525159
SC TO-T  Documents Tender offer statement by Third Party
Acc-no: 0001140361-24-001546 (34 Act)  Size: 10 MB
2024-01-09 005-92944
24524965
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0001214659-23-016936 (34 Act)  Size: 101 KB
2023-12-28 005-92944
231519259
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0000947871-23-001179 (34 Act)  Size: 110 KB
2023-12-27 005-92944
231518435
SC14D9C  Documents Written communication relating to third party tender offer
Acc-no: 0001104659-23-128476 (34 Act)  Size: 33 KB
2023-12-22 005-92944
231507136
8-K  Documents   Interactive Data Current report, items 1.01, 1.02, 5.02, 7.01, and 9.01
Acc-no: 0001104659-23-128468 (34 Act)  Size: 1 MB
2023-12-22 001-40869
231507127
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001104659-23-123002 (34 Act)  Size: 539 KB
2023-12-04 001-40869
231461263
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001104659-23-121095 (34 Act)  Size: 203 KB
2023-11-27 001-40869
231437276
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0000947871-23-001103 (34 Act)  Size: 144 KB
2023-11-24 005-92944
231436977
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0000950142-23-002837 (34 Act)  Size: 135 KB
2023-11-24 005-92944
231436972
SC 13D  Documents General statement of acquisition of beneficial ownership
Acc-no: 0001214659-23-015548 (34 Act)  Size: 124 KB
2023-11-24 005-92944
231436386
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001745020-23-000080 (34 Act)  Size: 10 MB
2023-11-17 001-40869
231418502
NT 10-Q  Documents Notification of inability to timely file Form 10-Q or 10-QSB
Acc-no: 0001745020-23-000075 (34 Act)  Size: 22 KB
2023-11-15 001-40869
231409006
8-K  Documents   Interactive Data Current report, items 2.02, 2.05, 5.02, 7.01, 8.01, and 9.01
Acc-no: 0001745020-23-000073 (34 Act)  Size: 5 MB
2023-11-13 001-40869
231398640
8-K  Documents   Interactive Data Current report, item 1.02
Acc-no: 0001745020-23-000057 (34 Act)  Size: 157 KB
2023-10-31 001-40869
231364680
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000315066-23-002533 (34 Act)  Size: 7 KB
2023-08-10 005-92944
231157297
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001745020-23-000050 (34 Act)  Size: 4 MB
2023-08-10 001-40869
231157147
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001745020-23-000049 (34 Act)  Size: 236 KB
2023-08-10 001-40869
231157142