Arch Resources, Inc. reports

Location
City Place One Ste 300, Arch Mineral Corp, St Louis, MO
State of incorporation
DE
Fiscal year end
December 31
Data updated at
9/17/2024, 01:32 AM
Form type Sec Links Description Filing date Reporting date
8-K Report | Data FORM 8-K Aug 21, 2024 Aug 20, 2024
10-Q Report | Data 10-Q Jul 25, 2024 Jun 30, 2024
8-K Report | Data FORM 8-K Jul 25, 2024 Jul 25, 2024
8-K Report | Data FORM 8-K May 9, 2024 May 7, 2024
10-Q Report | Data 10-Q Apr 25, 2024 Mar 31, 2024
8-K Report | Data FORM 8-K Apr 25, 2024 Apr 25, 2024
SC 13G/A Report Apr 5, 2024
8-K Report | Data FORM 8-K Mar 19, 2024 Mar 19, 2024
8-K Report | Data FORM 8-K Mar 6, 2024 Mar 6, 2024
8-K Report | Data FORM 8-K Feb 26, 2024 Feb 26, 2024
8-K Report | Data FORM 8-K Feb 22, 2024 Feb 21, 2024
8-K Report | Data FORM 8-K Feb 20, 2024 Feb 16, 2024
10-K Report | Data 10-K Feb 15, 2024 Dec 31, 2023
8-K Report | Data FORM 8-K Feb 15, 2024 Feb 15, 2024
SC 13G/A Report SCHEDULE 13G/A Feb 13, 2024
SC 13G/A Report Jan 26, 2024
SC 13G/A Report Jan 22, 2024
10-Q Report | Data 10-Q Oct 26, 2023 Sep 30, 2023
8-K Report | Data FORM 8-K Oct 26, 2023 Oct 26, 2023
SC 13G Report ARCH_AZVALOR Oct 23, 2023
8-K Report | Data FORM 8-K Oct 2, 2023 Oct 2, 2023
SC 13G/A Report Sep 11, 2023
SC 13G Report AZVALOR_ARCH Aug 7, 2023
10-Q Report | Data 10-Q Jul 27, 2023 Jun 30, 2023
8-K Report | Data FORM 8-K Jul 27, 2023 Jul 27, 2023
8-K Report | Data FORM 8-K Jul 24, 2023 Jul 21, 2023
8-K Report | Data FORM 8-K May 16, 2023 May 12, 2023
10-Q Report | Data 10-Q Apr 27, 2023 Mar 31, 2023
8-K Report | Data FORM 8-K Apr 27, 2023 Apr 27, 2023
SC 13G/A Report FORM SC 13G/A Apr 10, 2023
10-K Report | Data 10-K Feb 16, 2023 Dec 31, 2022
8-K Report | Data FORM 8-K Feb 16, 2023 Feb 16, 2023
SC 13G/A Report Feb 14, 2023
SC 13G/A Report Feb 14, 2023
SC 13G Report FORM SC 13G Feb 13, 2023
SC 13G/A Report SCHEDULE 13G/A Feb 9, 2023
SC 13G/A Report Feb 9, 2023
SC 13G/A Report MS AMENDMENT Feb 8, 2023
SC 13G/A Report Feb 6, 2023
SC 13G/A Report Feb 1, 2023
8-K Report | Data FORM 8-K Dec 16, 2022 Dec 12, 2022
8-K Report | Data FORM 8-K Nov 30, 2022 Nov 30, 2022
SC 13G/A Report SCHEDULE 13G/A Nov 10, 2022
10-Q Report | Data 10-Q Oct 27, 2022 Sep 30, 2022
8-K Report | Data FORM 8-K Oct 27, 2022 Oct 27, 2022
8-K Report | Data FORM 8-K Sep 23, 2022 Sep 20, 2022
SC 13G Report Aug 10, 2022
10-Q Report | Data 10-Q Jul 28, 2022 Jun 30, 2022
8-K Report | Data FORM 8-K Jul 28, 2022 Jul 28, 2022
8-K Report | Data FORM 8-K May 26, 2022 May 25, 2022
8-K Report | Data FORM 8-K May 23, 2022 May 18, 2022
8-K Report | Data FORM 8-K May 16, 2022 May 13, 2022
SC 13G Report AZVALOR_ARCH May 13, 2022
10-Q Report | Data 10-Q Apr 26, 2022 Mar 31, 2022
8-K Report | Data FORM 8-K Apr 26, 2022 Apr 26, 2022
8-K Report | Data FORM 8-K Feb 28, 2022 Feb 28, 2022
10-K Report | Data 10-K Feb 16, 2022 Dec 31, 2021
8-K Report | Data FORM 8-K Feb 15, 2022 Feb 15, 2022
SC 13G Report MAPLE ROCK CAPITAL PARTNERS INC. Feb 14, 2022
SC 13G/A Report Feb 11, 2022
SC 13G/A Report MS AMENDMENT Feb 10, 2022
SC 13G/A Report ARCH RESOURCES, INC. Feb 10, 2022
SC 13G/A Report SCHEDULE 13G/A Feb 9, 2022
SC 13G/A Report SEC SCHEDULE 13G Feb 8, 2022
SC 13G/A Report Feb 3, 2022
SC 13G Report Jan 31, 2022
SC 13G Report AZVALOR_ARCH Jan 10, 2022
8-K Report | Data FORM 8-K Jan 3, 2022 Jan 3, 2022
SC 13G/A Report SCHEDULE 13G/A Nov 10, 2021
10-Q Report | Data 10-Q Oct 26, 2021 Sep 30, 2021
8-K Report | Data FORM 8-K Oct 26, 2021 Oct 26, 2021
SC 13G/A Report Oct 12, 2021
8-K Report | Data FORM 8-K Sep 9, 2021 Sep 9, 2021
10-Q Report | Data 10-Q Jul 27, 2021 Jun 30, 2021
8-K Report | Data FORM 8-K Jul 27, 2021 Jul 27, 2021
8-K Report | Data FORM 8-K May 6, 2021 May 6, 2021
8-K Report | Data FORM 8-K Apr 30, 2021 Apr 29, 2021
10-Q Report | Data 10-Q Apr 22, 2021 Mar 31, 2021
8-K Report | Data FORM 8-K Apr 22, 2021 Apr 22, 2021
SC 13G/A Report Apr 12, 2021
SC 13G Report ARCH_AZVALOR Mar 29, 2021
SC 13G Report SC 13G Feb 17, 2021
SC 13G/A Report Feb 16, 2021
10-K Report | Data 10-K Feb 12, 2021 Dec 31, 2020
SC 13G Report SEC SCHEDULE 13G Feb 12, 2021
SC 13G Report Feb 11, 2021
SC 13G/A Report ARCH RESOURCES, INC. Feb 11, 2021
SC 13G/A Report MS AMENDMENT Feb 10, 2021
SC 13G/A Report SCHEDULE 13G/A Feb 10, 2021
8-K Report | Data FORM 8-K Feb 9, 2021 Feb 9, 2021
SC 13G/A Report Jan 29, 2021
8-K Report | Data FORM 8-K Nov 4, 2020 Nov 3, 2020
8-K Report | Data FORM 8-K Nov 3, 2020 Oct 29, 2020
8-K Report | Data FORM 8-K Oct 30, 2020 Oct 29, 2020
8-K Report | Data FORM 8-K Oct 29, 2020 Oct 28, 2020
10-Q Report | Data 10-Q Oct 23, 2020 Sep 30, 2020
8-K Report | Data FORM 8-K Oct 22, 2020 Oct 22, 2020
8-K Report | Data FORM 8-K Oct 14, 2020 Oct 13, 2020
8-K Report | Data FORM 8-K Oct 7, 2020 Oct 5, 2020
SC 13G Report MS INITIAL Oct 5, 2020
8-K Report | Data FORM 8-K Sep 29, 2020 Sep 29, 2020
8-K Report | Data FORM 8-K Sep 2, 2020 Sep 2, 2020
SC 13G/A Report MS AMENDMENT Aug 10, 2020
10-Q Report | Data 10-Q Jul 28, 2020 Jun 30, 2020
8-K Report | Data FORM 8-K Jul 28, 2020 Jul 28, 2020
8-K Report | Data FORM 8-K Jul 6, 2020 Jul 6, 2020
SC 13G Report ARCH RESOURCES, INC. May 22, 2020
8-K Report | Data FORM 8-K May 15, 2020 May 15, 2020
8-K Report | Data FORM 8-K May 5, 2020 Apr 30, 2020
8-K Report | Data FORM 8-K May 1, 2020 May 1, 2020
10-Q Report | Data 10-Q Apr 23, 2020 Mar 31, 2020
8-K Report | Data FORM 8-K Apr 23, 2020 Apr 23, 2020
SC 13G Report MS INITIAL Apr 21, 2020
8-K Report | Data FORM 8-K Apr 15, 2020 Apr 15, 2020
8-K Report | Data FORM 8-K Mar 24, 2020 Mar 24, 2020
8-K Report | Data FORM 8-K Mar 5, 2020 Mar 4, 2020
8-K Report | Data FORM 8-K Feb 28, 2020 Feb 27, 2020
8-K Report | Data FORM 8-K Feb 26, 2020 Feb 26, 2020
SC 13G Report SC 13G Feb 21, 2020
SC 13G Report SC 13G Feb 14, 2020
SC 13G/A Report Feb 14, 2020
SC 13G/A Report ARCH COAL, INC. Feb 13, 2020
SC 13G/A Report SCHEDULE 13G/A Feb 12, 2020
SC 13G/A Report SCHEDULE 13G/A Feb 12, 2020
10-K Report | Data 10-K Feb 11, 2020 Dec 31, 2019
8-K Report | Data FORM 8-K Feb 6, 2020 Feb 6, 2020
SC 13G/A Report Feb 5, 2020
SC 13G/A Report SEC SCHEDULE 13G Dec 10, 2019
SC 13G Report Dec 10, 2019
8-K Report | Data FORM 8-K Nov 15, 2019 Nov 15, 2019
8-K Report | Data FORM 8-K Oct 28, 2019 Oct 23, 2019
SC 13D/A Report SCHEDULE 13D (AMENDMENT NO. 8) Oct 24, 2019
10-Q Report | Data 10-Q Oct 22, 2019 Sep 30, 2019
8-K Report | Data FORM 8-K Oct 22, 2019 Oct 22, 2019
8-K Report | Data FORM 8-K Sep 17, 2019 Sep 17, 2019
SC 13D/A Report SCHEDULE 13D (AMENDMENT NO. 7) Sep 13, 2019
SC 13G Report SC 13G Aug 9, 2019
8-K Report | Data FORM 8-K Aug 6, 2019 Aug 6, 2019
10-Q Report | Data 10-Q Jul 24, 2019 Jun 30, 2019
8-K Report 8-K Jul 24, 2019 Jul 24, 2019
8-K/A Report 8-K/A Jun 19, 2019 Jun 18, 2019
8-K Report 8-K Jun 19, 2019 Jun 18, 2019
SC 13G Report ARCH COAL, INC. Jun 14, 2019
SC 13G Report SEC SCHEDULE 13G Jun 10, 2019
8-K Report 8-K May 23, 2019 May 23, 2019
8-K Report 8-K May 6, 2019 May 2, 2019
10-Q Report | Data 10-Q Apr 23, 2019 Mar 31, 2019
8-K Report 8-K Apr 23, 2019 Apr 23, 2019
SC 13D/A Report SCHEDULE 13D (AMENDMENT NO. 6) Mar 18, 2019
8-K Report 8-K Mar 1, 2019 Feb 28, 2019
8-K Report 8-K Feb 26, 2019 Feb 26, 2019
10-K Report | Data 10-K Feb 14, 2019 Dec 31, 2018
8-K Report 8-K Feb 14, 2019 Feb 14, 2019
SC 13G/A Report Feb 11, 2019
SC 13G Report SCHEDULE 13G Feb 8, 2019
SC 13G/A Report Feb 4, 2019
SC 13G/A Report Jan 14, 2019
8-K Report 8-K Jan 2, 2019 Dec 31, 2018
SC 13D/A Report SCHEDULE 13D (AMENDMENT NO. 5) Dec 18, 2018
SC 13D Report SCHEDULE 13D Dec 3, 2018
10-Q Report | Data 10-Q Oct 23, 2018 Sep 30, 2018
8-K Report 8-K Oct 23, 2018 Oct 23, 2018
8-K Report 8-K Sep 13, 2018 Sep 12, 2018
8-K Report 8-K Aug 8, 2018 Aug 8, 2018
10-Q Report | Data 10-Q Jul 31, 2018 Jun 30, 2018
8-K Report 8-K Jul 31, 2018 Jul 31, 2018
8-K Report 8-K May 16, 2018 May 16, 2018
8-K Report 8-K May 3, 2018 Apr 30, 2018
10-Q Report | Data 10-Q Apr 26, 2018 Mar 31, 2018
8-K Report 8-K Apr 26, 2018 Apr 26, 2018
8-K Report 8-K Apr 3, 2018 Apr 3, 2018
8-K Report 8-K Mar 13, 2018 Mar 13, 2018
10-K Report | Data 10-K Feb 23, 2018 Dec 31, 2017
SC 13G/A Report Feb 14, 2018
8-K Report 8-K Feb 13, 2018 Feb 13, 2018
SC 13G/A Report Feb 12, 2018
SC 13G/A Report FORM13G Feb 5, 2018
SC 13G Report Feb 1, 2018
SC 13D/A Report SCHEDULE 13D/A, #3 Dec 12, 2017
8-K Report 8-K Dec 11, 2017 Dec 8, 2017
8-K Report 8-K Nov 7, 2017 Nov 7, 2017
10-Q Report | Data 10-Q Oct 31, 2017 Sep 30, 2017
8-K Report 8-K Oct 31, 2017 Oct 31, 2017
8-K Report 8-K Sep 25, 2017 Sep 25, 2017
8-K Report 8-K Sep 19, 2017 Sep 13, 2017
SC 13D/A Report AMENDMENT NO. 2 Sep 15, 2017
8-K Report 8-K Aug 8, 2017 Aug 8, 2017
10-Q Report | Data 10-Q Jul 27, 2017 Jun 30, 2017
8-K Report | Data 8-K Jul 27, 2017 Jul 27, 2017
8-K Report 8-K May 9, 2017 May 4, 2017
8-K Report 8-K May 8, 2017 May 8, 2017
10-Q Report | Data 10-Q May 2, 2017 Mar 31, 2017
8-K Report 8-K May 2, 2017 Apr 27, 2017
8-K Report 8-K Mar 8, 2017 Mar 7, 2017
8-K Report 8-K Feb 28, 2017 Feb 28, 2017
10-K Report | Data 10-K Feb 24, 2017 Dec 31, 2016
8-K Report 8-K Feb 16, 2017 Feb 15, 2017
SC 13G/A Report 13G Feb 14, 2017
SC 13G Report Feb 9, 2017
8-K Report 8-K Feb 8, 2017 Feb 8, 2017
SC 13G Report Feb 6, 2017
SC 13G/A Report SCHEDULE 13G Jan 26, 2017
8-K Report FORM 8-K Nov 30, 2016 Nov 23, 2016
8-K Report 8-K Nov 30, 2016 Nov 30, 2016
8-K Report 8-K Nov 30, 2016 Nov 30, 2016
SC 13D/A Report AMENDMENT NO. 1 Nov 22, 2016
8-K Report 8-K Nov 21, 2016 Nov 17, 2016
SC 13G Report FORM SC 13G Nov 10, 2016
10-Q Report | Data 10-Q Nov 9, 2016 Sep 30, 2016
8-K Report 8-K Nov 9, 2016 Nov 9, 2016
8-K Report Nov 3, 2016 Nov 1, 2016
SC 13D Report SCHEDULE 13D Oct 17, 2016
8-K Report 8-K Oct 11, 2016 Oct 5, 2016
8-K Report 8-K Oct 3, 2016 Sep 28, 2016
8-K Report 8-K Sep 30, 2016 Sep 30, 2016
8-K Report 8-K Sep 15, 2016 Sep 13, 2016
8-K Report 8-K Sep 8, 2016 Sep 6, 2016
10-Q Report | Data 10-Q Aug 9, 2016 Jun 30, 2016
8-K Report 8-K Jul 22, 2016 Jul 20, 2016
8-K Report 8-K Jul 5, 2016 Jul 5, 2016
8-K Report 8-K Jun 28, 2016 Jun 23, 2016
8-K Report 8-K Jun 16, 2016 Jun 10, 2016
10-Q Report | Data 10-Q May 10, 2016 Mar 31, 2016
10-K/A Report 10-K/A Apr 29, 2016 Dec 31, 2015
8-K Report 8-K Apr 28, 2016 Apr 26, 2016
8-K Report | Data 8-K Apr 15, 2016 Apr 15, 2016
8-K Report 8-K Mar 29, 2016 Mar 28, 2016
10-K Report | Data 10-K Mar 15, 2016 Dec 31, 2015
8-K Report 8-K Mar 8, 2016 Mar 4, 2016
8-K Report 8-K Mar 2, 2016 Feb 25, 2016
SC 13G/A Report ARCH COAL, INC. Feb 22, 2016
SC 13G/A Report SCHNEIDER CAPITAL MANAGEMENT SCHEDULE 13G/A Feb 12, 2016
SC 13G Report ARCH COAL, INC. Feb 11, 2016
SC 13G/A Report Feb 10, 2016
8-K Report 8-K Jan 22, 2016 Jan 21, 2016
8-K Report 8-K Jan 19, 2016 Jan 13, 2016
8-K Report 8-K Jan 11, 2016 Jan 11, 2016
8-K Report 8-K Jan 11, 2016 Jan 10, 2016
8-K Report 8-K Dec 15, 2015 Dec 15, 2015
8-K Report 8-K Dec 10, 2015 Dec 4, 2015
10-Q Report | Data 10-Q Nov 9, 2015 Sep 30, 2015
8-K Report 8-K Nov 9, 2015 Nov 9, 2015
8-K Report 8-K Oct 27, 2015 Oct 26, 2015
8-K Report 8-K Sep 24, 2015 Sep 23, 2015
8-K Report 8-K Sep 11, 2015 Sep 10, 2015
8-K Report 8-K Aug 31, 2015 Aug 28, 2015
8-K Report 8-K Aug 4, 2015 Aug 3, 2015
10-Q Report | Data 10-Q Jul 31, 2015 Jun 30, 2015
8-K Report 8-K Jul 30, 2015 Jul 30, 2015
8-K Report 8-K Jul 29, 2015 Jul 28, 2015
8-K Report 8-K Jul 20, 2015 Jul 20, 2015
8-K Report 8-K Jul 17, 2015 Jul 16, 2015
SC 13G/A Report Jul 10, 2015
8-K Report 8-K Jul 2, 2015 Jul 1, 2015
8-K Report 8-K Jun 26, 2015 Jun 22, 2015
8-K Report 8-K May 22, 2015 May 21, 2015
10-Q Report | Data 10-Q Apr 30, 2015 Mar 31, 2015
8-K Report 8-K Apr 24, 2015 Apr 23, 2015
8-K Report 8-K Apr 23, 2015 Apr 23, 2015
8-K Report 8-K Apr 21, 2015 Apr 21, 2015
10-K Report | Data 10-K Feb 27, 2015 Dec 31, 2014
8-K Report 8-K Feb 27, 2015 Feb 26, 2015
8-K Report 8-K Feb 26, 2015 Feb 25, 2015
SC 13G/A Report SC 13G/A Feb 17, 2015
SC 13G/A Report ARCH COAL INC. SCHEDULE 13G/A Feb 13, 2015
SC 13G/A Report ACI Feb 11, 2015
SC 13G/A Report Feb 10, 2015
8-K Report 8-K Feb 3, 2015 Feb 3, 2015
SC 13G/A Report Jan 22, 2015
8-K Report 8-K Nov 12, 2014 Nov 10, 2014
10-Q Report | Data 10-Q Nov 7, 2014 Sep 30, 2014
8-K Report 8-K Oct 28, 2014 Oct 28, 2014
8-K Report 8-K Oct 14, 2014 Oct 13, 2014
8-K Report 8-K Sep 4, 2014 Sep 3, 2014
10-Q Report | Data 10-Q Aug 8, 2014 Jun 30, 2014
8-K Report 8-K Jul 29, 2014 Jul 29, 2014
8-K Report 8-K Jul 21, 2014 Jul 21, 2014
8-K Report 8-K Jun 19, 2014 Jun 19, 2014
10-Q Report | Data 10-Q May 12, 2014 Mar 31, 2014
8-K Report 8-K Apr 29, 2014 Apr 24, 2014
8-K Report 8-K Apr 24, 2014 Apr 24, 2014
8-K Report 8-K Apr 22, 2014 Apr 22, 2014
SC 13G Report SCHEDULE 13G Mar 13, 2014
8-K Report 8-K Mar 5, 2014 Feb 27, 2014
10-K Report | Data 10-K Feb 28, 2014 Dec 31, 2013
8-K Report 8-K Feb 19, 2014 Feb 19, 2014
SC 13G Report SCHEIDER CAPITAL MANAGEMENT FORM SC 13G Feb 14, 2014
SC 13G/A Report Feb 11, 2014
SC 13G Report ARCH EXIT Feb 5, 2014
8-K Report 8-K Feb 4, 2014 Feb 4, 2014
SC 13G/A Report Jan 31, 2014
8-K Report 8-K Jan 21, 2014 Jan 21, 2014
8-K Report 8-K Jan 17, 2014 Jan 13, 2014
8-K Report 8-K Dec 17, 2013 Dec 17, 2013
8-K Report 8-K Dec 16, 2013 Dec 13, 2013
8-K Report 8-K Dec 13, 2013 Dec 12, 2013
8-K Report 8-K Dec 12, 2013 Dec 12, 2013
8-K Report 8-K Dec 3, 2013 Dec 2, 2013
10-Q Report | Data 10-Q Nov 12, 2013 Sep 30, 2013
8-K Report 8-K Nov 6, 2013 Nov 6, 2013
8-K Report 8-K Oct 29, 2013 Oct 29, 2013
8-K Report 8-K Oct 11, 2013 Oct 10, 2013
8-K Report 8-K Aug 27, 2013 Aug 21, 2013
8-K Report 8-K Aug 19, 2013 Aug 19, 2013
8-K Report 8-K Aug 12, 2013 Aug 6, 2013
10-Q Report | Data 10-Q Aug 8, 2013 Jun 30, 2013
8-K Report 8-K Jul 30, 2013 Jul 30, 2013
8-K Report 8-K Jul 2, 2013 Jun 27, 2013
8-K Report 8-K Jun 28, 2013 Jun 28, 2013
10-Q Report | Data 10-Q May 8, 2013 Mar 31, 2013
8-K Report 8-K May 8, 2013 May 8, 2013
8-K Report 8-K Apr 30, 2013 Apr 25, 2013
8-K Report 8-K Apr 23, 2013 Apr 23, 2013
8-K Report 8-K Mar 19, 2013 Mar 19, 2013
10-K Report | Data 10-K Mar 1, 2013 Dec 31, 2012
8-K Report 8-K Feb 26, 2013 Feb 21, 2013
8-K Report 8-K Feb 26, 2013 Feb 26, 2013
SC 13G/A Report Feb 22, 2013
SC 13G Report Feb 13, 2013
SC 13G Report ARCH COAL Feb 11, 2013
8-K Report 8-K Feb 5, 2013 Feb 5, 2013
SC 13G/A Report Jan 31, 2013
8-K Report 8-K Dec 19, 2012 Dec 13, 2012
SC 13G/A Report ARCH Dec 10, 2012
8-K Report 8-K Nov 28, 2012 Nov 28, 2012
8-K Report 8-K Nov 26, 2012 Nov 21, 2012
8-K Report 8-K Nov 21, 2012 Nov 21, 2012
8-K Report 8-K Nov 19, 2012 Nov 13, 2012
8-K Report 8-K Nov 15, 2012 Nov 14, 2012
8-K Report 8-K Nov 13, 2012 Nov 13, 2012
SC 13G/A Report ARCH Nov 9, 2012
10-Q Report | Data 10-Q Nov 8, 2012 Sep 30, 2012
8-K Report 8-K Oct 26, 2012 Oct 26, 2012
8-K Report 8-K Oct 19, 2012 Oct 15, 2012
8-K Report 8-K Sep 6, 2012 Sep 6, 2012
8-K Report 8-K Sep 4, 2012 Aug 31, 2012
SC 13G/A Report ACI AS OF 07/31/2012 Aug 10, 2012
10-Q Report | Data 10-Q Aug 9, 2012 Jun 30, 2012
8-K Report 8-K Aug 7, 2012 Aug 7, 2012
8-K Report 8-K Jul 27, 2012 Jul 27, 2012
8-K Report 8-K Jun 21, 2012 Jun 21, 2012
8-K Report 8-K Jun 18, 2012 Jun 12, 2012
8-K Report 8-K May 22, 2012 May 22, 2012
8-K Report 8-K May 21, 2012 May 15, 2012
8-K Report 8-K May 17, 2012 May 16, 2012
8-K Report 8-K May 15, 2012 May 15, 2012
10-Q/A Report | Data 10-Q/A May 11, 2012 Mar 31, 2012
10-Q Report | Data 10-Q May 10, 2012 Mar 31, 2012
8-K Report 8-K May 2, 2012 Apr 26, 2012
8-K Report 8-K May 2, 2012 Apr 30, 2012
8-K Report 8-K May 1, 2012 May 1, 2012
8-K Report 8-K May 1, 2012 May 1, 2012
8-K Report 8-K Apr 26, 2012 Apr 26, 2012
8-K Report 8-K Apr 24, 2012 Apr 18, 2012
8-K Report 8-K Apr 23, 2012 Apr 23, 2012
10-K/A Report | Data 10-K/A Apr 23, 2012 Dec 31, 2011
8-K Report 8-K Mar 13, 2012 Mar 7, 2012
8-K Report 8-K Mar 1, 2012 Feb 27, 2012
10-K Report | Data 10-K Feb 29, 2012 Dec 31, 2011
8-K Report 8-K Feb 15, 2012 Feb 15, 2012
SC 13G/A Report ACI Feb 14, 2012
SC 13G Report ACI Feb 14, 2012
8-K Report 8-K Feb 13, 2012 Feb 13, 2012
SC 13G/A Report Feb 13, 2012
SC 13G/A Report ACI AS OF 12/31/11 Feb 10, 2012
8-K Report 8-K Feb 10, 2012 Feb 10, 2012
8-K Report 8-K Feb 2, 2012 Feb 2, 2012
SC 13G Report SC 13G Nov 10, 2011
10-Q Report | Data 10-Q Nov 9, 2011 Sep 30, 2011
8-K Report 8-K Nov 8, 2011 Nov 8, 2011
8-K Report 8-K Oct 28, 2011 Oct 28, 2011
8-K Report 8-K Oct 3, 2011 Sep 30, 2011
8-K Report 8-K Sep 16, 2011 Sep 13, 2011
10-Q/A Report | Data 10-Q/A Sep 8, 2011 Jun 30, 2011
8-K/A Report 8-K/A Aug 30, 2011 Jun 14, 2011
10-Q Report 10-Q Aug 9, 2011 Jun 30, 2011
8-K Report FORM 8-K Aug 9, 2011 Aug 9, 2011
8-K Report FORM 8-K Jul 29, 2011 Jul 29, 2011
SC 13D Report SC 13D Jun 23, 2011
8-K Report FORM 8-K Jun 17, 2011 Jun 14, 2011
8-K Report FORM 8-K Jun 15, 2011 Jun 15, 2011
8-K Report FORM 8-K Jun 14, 2011 Jun 8, 2011
8-K Report FORM 8-K Jun 8, 2011 Jun 2, 2011
8-K Report FORM 8-K Jun 2, 2011 May 31, 2011
8-K Report 8-K May 31, 2011 May 31, 2011
8-K/A Report FORM 8-K/A May 27, 2011 May 2, 2011
10-Q Report | Data FORM 10-Q May 4, 2011 Mar 31, 2011
8-K Report FORM 8-K May 3, 2011 Apr 28, 2011
8-K Report FORM 8-K May 3, 2011 May 2, 2011
8-K Report FORM 8-K May 3, 2011 May 2, 2011
8-K Report FORM 8-K Apr 28, 2011 Apr 28, 2011
8-K Report FORM 8-K Apr 26, 2011 Apr 26, 2011
10-K Report | Data FORM 10-K Mar 1, 2011 Dec 31, 2010
8-K Report FORM 8-K Mar 1, 2011 Feb 23, 2011
8-K Report FORM 8-K Feb 28, 2011 Feb 28, 2011
SC 13G/A Report SC 13G/A Feb 14, 2011
SC 13G/A Report ACI AS OF 12/31/10 Feb 10, 2011
8-K Report FORM 8-K Jan 28, 2011 Jan 28, 2011
SC 13G Report SCHEDULE 13G Jan 19, 2011
8-K Report FORM 8-K Jan 12, 2011 Jan 11, 2011
SC 13G/A Report Jan 10, 2011
8-K Report FORM 8-K Nov 10, 2010 Nov 10, 2010
10-Q Report | Data FORM 10-Q Nov 9, 2010 Sep 30, 2010
8-K Report FORM 8-K Oct 29, 2010 Oct 29, 2010
8-K Report FORM 8-K Oct 27, 2010 Oct 21, 2010
8-K Report FORM 8-K Oct 18, 2010 Oct 14, 2010
SC 13G/A Report DOC ONE Oct 12, 2010
8-K Report FORM 8-K Sep 20, 2010 Sep 20, 2010
8-K Report FORM 8-K Sep 15, 2010 Sep 15, 2010
8-K Report FORM 8-K Sep 9, 2010 Sep 9, 2010
8-K Report FORM 8-K Aug 19, 2010 Aug 15, 2010
SC 13G Report ACI AS OF 7/30/2010 Aug 10, 2010
8-K Report FORM 8-K Aug 9, 2010 Aug 9, 2010
10-Q Report | Data FORM 10-Q Aug 6, 2010 Jun 30, 2010
8-K Report FORM 8-K Aug 3, 2010 Aug 2, 2010
8-K Report FORM 8-K Aug 2, 2010 Aug 2, 2010
8-K Report FORM 8-K Aug 2, 2010 Aug 2, 2010
8-K Report FORM 8-K Jul 30, 2010 Jul 30, 2010
8-K Report FORM 8-K Jul 22, 2010 Jul 21, 2010
8-K Report FORM 8-K May 12, 2010 May 12, 2010
10-Q Report | Data FORM 10-Q May 10, 2010 Mar 31, 2010
SC 13G/A Report DOC ONE May 10, 2010
SC 13G/A Report May 10, 2010
8-K Report FORM 8-K Apr 27, 2010 Apr 22, 2010
8-K Report FORM 8-K Apr 22, 2010 Apr 22, 2010
8-K Report FORM 8-K Apr 19, 2010 Apr 19, 2010
8-K Report FORM 8-K Mar 23, 2010 Mar 19, 2010
8-K Report FORM 8-K Mar 11, 2010 Mar 11, 2010
SC 13G Report SCHEDULE 13-G Mar 10, 2010
8-K Report FORM 8-K Mar 10, 2010 Mar 10, 2010
10-K Report | Data FORM 10-K Mar 1, 2010 Dec 31, 2009
8-K Report FORM 8-K Feb 22, 2010 Feb 22, 2010
SC 13G/A Report DOC ONE Feb 16, 2010
SC 13G/A Report SC 13G/A Feb 11, 2010
SC 13G Report Jan 29, 2010
8-K Report FORM 8-K Jan 29, 2010 Jan 29, 2010
10-Q Report | Data FORM 10-Q Nov 9, 2009 Sep 30, 2009
10-Q Report | Data FORM 10-Q Aug 7, 2009 Jun 30, 2009
10-Q Report FORM 10-Q May 8, 2009 Mar 31, 2009
10-K Report FORM 10-K Feb 27, 2009 Dec 31, 2008
10-Q Report FORM 10-Q Nov 10, 2008 Sep 30, 2008
10-Q Report FORM 10-Q Aug 8, 2008 Jun 30, 2008
10-Q Report QUARTERLY REPORT May 9, 2008 Mar 31, 2008
10-K Report ANNUAL REPORT Feb 29, 2008 Dec 31, 2007
10-Q Report QUARTERLY REPORT Nov 7, 2007 Sep 30, 2007
10-Q Report QUARTERLY REPORT Aug 8, 2007 Jun 30, 2007
10-Q Report FORM 10-Q May 9, 2007 Mar 31, 2007
10-K Report ANNUAL REPORT Mar 1, 2007 Dec 31, 2006
10-Q Report QUARTERLY REPORT Nov 9, 2006 Sep 30, 2006
10-Q Report QUARTERLY REPORT Aug 7, 2006 Jun 30, 2006
10-Q Report FORM 10-Q May 9, 2006 Mar 31, 2006
10-K Report ANNUAL REPORT Mar 14, 2006 Dec 31, 2005
10-Q Report FORM 10-Q Nov 9, 2005 Sep 30, 2005
10-Q Report FORM 10-Q Aug 8, 2005 Jun 30, 2005
10-Q Report FORM 10-Q May 6, 2005 Mar 31, 2005
10-K Report ANNUAL REPORT Mar 11, 2005 Dec 31, 2004
10-Q Report QUARTERLY REPORT Nov 9, 2004 Sep 30, 2004
10-Q Report QUARTERLY REPORT Aug 6, 2004 Jun 30, 2004
10-Q Report QUARTERLY REPORT May 10, 2004 Mar 31, 2004
10-K Report ANNUAL REPORT Mar 8, 2004 Dec 31, 2003
10-Q Report FORM 10-Q Nov 13, 2003 Sep 30, 2003
10-Q Report ARCH COAL Aug 14, 2003 Jun 30, 2003
10-Q Report FORM 10-Q May 15, 2003 Mar 31, 2003
10-K Report FORM 10-K Mar 13, 2003 Dec 31, 2002
10-Q Report 3RD QUARTER 10Q 2002 Nov 12, 2002 Sep 30, 2002
10-Q Report SECOND QUARTER 10Q FOR 2002 Aug 8, 2002 Jun 30, 2002
10-Q Report ARCH COAL, INC. FIRST QUARTER 10Q May 13, 2002 Mar 31, 2002
10-Q Report THIRD QUARTER 10Q FOR 2001 Nov 13, 2001 Sep 30, 2001
10-Q Report FORM10Q2ND01 Aug 14, 2001 Jun 30, 2001
10-Q Report FORM10Q1ST01 May 15, 2001 Mar 31, 2001
10-Q Report QUARTERLY REPORT FOR ARCH COAL, INC. Nov 14, 2000 Sep 30, 2000
10-Q Report QUARTERLY REPORT FOR ARCH COAL, INC. Aug 4, 2000 Jun 30, 2000
10-Q Report FORM 10-Q May 15, 2000 Mar 31, 2000
10-Q Report FORM 10-Q Nov 15, 1999 Sep 30, 1999
10-Q Report FORM 10-Q Aug 12, 1999 Jun 30, 1999
10-Q Report FORM 10-Q May 14, 1999 Mar 31, 1999
10-Q Report FORM 10-Q Nov 16, 1998 Sep 30, 1998
10-Q Report 10-Q FOR ARCH COAL, INC. Aug 14, 1998 Jun 30, 1998
10-Q Report FIRST QUARTER 1998 10-Q May 15, 1998 Mar 31, 1998
10-K Report 10-K Mar 17, 1998 Dec 31, 1997
10-Q Report THIRD QUARTER 1997 10-Q Nov 13, 1997 Sep 30, 1997
10-Q Report Aug 14, 1997 Jun 30, 1997