Mailing Address CITYPLACE ONE SUITE 300 ARCH MINERAL CORP CREVE COEUR MO 63141
Business Address CITY PLACE ONE STE 300 ARCH MINERAL CORP ST LOUIS MO 63141 3149942700
ARCH RESOURCES, INC. CIK#: 0001037676 (see all company filings)

SIC: 1221 - BITUMINOUS COAL & LIGNITE SURFACE MINING
State location: MO | State of Inc.: DE | Fiscal Year End: 1231
formerly: ARCH COAL INC (filings through 2020-05-05)
formerly: ARCH MINERAL CORP (filings through 1997-07-01)
(CF Office: 01 Energy & Transportation)
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Items 1 - 40  0001037676 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000354204-25-000852 (34 Act)  Size: 8 KB
2025-04-15 005-51233
25838407
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000315066-25-000416 (34 Act)  Size: 10 KB
2025-02-07 005-51233
25599839
15-12G  Documents Securities registration termination [Section 12(g)]
Acc-no: 0001193125-25-012204 (34 Act)  Size: 11 KB
2025-01-24 001-13105
25554201
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003820 (33 Act)  Size: 24 KB
2025-01-15 333-214373
25533666
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003819 (33 Act)  Size: 24 KB
2025-01-15 333-112537
25533655
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003818 (33 Act)  Size: 24 KB
2025-01-15 333-193169
25533653
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003817 (33 Act)  Size: 24 KB
2025-01-15 333-112536
25533648
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003816 (33 Act)  Size: 24 KB
2025-01-15 333-191071
25533647
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003815 (33 Act)  Size: 24 KB
2025-01-15 333-68131
25533642
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003814 (33 Act)  Size: 24 KB
2025-01-15 333-147459
25533641
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003813 (33 Act)  Size: 24 KB
2025-01-15 333-30565
25533638
S-8 POS  Documents Securities to be offered to employees in employee benefit plans, post-effective amendments
Acc-no: 0001104659-25-003812 (33 Act)  Size: 24 KB
2025-01-15 333-127548
25533637
8-K  Documents   Interactive Data Current report, items 1.01, 1.02, 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 7.01, 8.01, and 9.01
Acc-no: 0001104659-25-003782 (34 Act)  Size: 1 MB
2025-01-15 001-13105
25533240
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: 0000876661-25-000024 (34 Act)  Size: 4 KB
2025-01-14 001-13105
25528074
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001104659-25-002248 (34 Act)  Size: 219 KB
2025-01-10 001-13105
25520256
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-25-001053 (34 Act)  Size: 75 KB
2025-01-03 001-13105
25503825
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001104659-25-000574 (34 Act)  Size: 84 KB
2025-01-03 001-13105
25503818
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001104659-25-000570 (34 Act)  Size: 279 KB
2025-01-03 001-13105
25503814
SCHEDULE 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000315066-24-002993 (34 Act)  Size: 11 KB
2024-12-06 005-51233
241531256
DEFM14A  Documents Definitive proxy statement relating to merger or acquisition
Acc-no: 0001193125-24-266190 (34 Act)  Size: 4 MB
2024-11-26 001-13105
241505215
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-012391 Size: 39 KB
2024-11-07 001-13105
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001104659-24-114890 (34 Act)  Size: 28 KB
2024-11-07 001-13105
241432511
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-252202 (34 Act)  Size: 25 KB
2024-11-06 001-13105
241432241
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001104659-24-114457 (34 Act)  Size: 35 KB
2024-11-06 001-13105
241429021
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-251320 (34 Act)  Size: 22 KB
2024-11-05 001-13105
241428424
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001558370-24-014411 (34 Act)  Size: 11 MB
2024-11-05 001-13105
241427113
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-251002 (34 Act)  Size: 2 MB
2024-11-05 001-13105
241425748
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001104659-24-114111 (34 Act)  Size: 34 KB
2024-11-05 001-13105
241425746
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-24-114094 (34 Act)  Size: 588 KB
2024-11-05 001-13105
241425581
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001104659-24-113550 Size: 456 KB
2024-11-01
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000354204-24-004708 (34 Act)  Size: 19 KB
2024-10-31 005-51233
241413799
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-011928 Size: 48 KB
2024-10-25 001-13105
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000093751-24-000749 (34 Act)  Size: 56 KB
2024-10-16 005-51233
241373892
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-237225 (34 Act)  Size: 60 KB
2024-10-15 001-13105
241369381
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001104659-24-108349 (34 Act)  Size: 61 KB
2024-10-15 001-13105
241369361
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0001104659-24-108344 (34 Act)  Size: 254 KB
2024-10-15 001-13105
241369340
SD  Documents   Interactive Data Specialized disclosure report
Acc-no: 0001558370-24-012697 (34 Act)  Size: 271 KB
2024-09-10 001-13105
241289833
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-212205 (34 Act)  Size: 1 MB
2024-09-03 001-13105
241275112
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-207170 (34 Act)  Size: 803 KB
2024-08-26 001-13105
241242213
425  Documents Prospectuses and communications, business combinations
Acc-no: 0001193125-24-204544 (34 Act)  Size: 105 KB
2024-08-22 001-13105
241229548