ALTA EQUIPMENT GROUP INC.

Symbol
ALTG, ALTG-PA on NYSE
Business address
13211 Merriman Road, Livonia, MI, 48150
State of incorporation
DE
Fiscal year end
31 December
Former names
B. Riley Principal Merger Corp. (to 14 Feb 2020)
Get insider transactions for this issuer
ALTA EQUIPMENT GROUP INC. has filed 478 SEC EDGAR filings since 10 Dec 2018

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open Document | Data Open Filing 8-K 07 Jan 2026 31 Dec 2025 001-38864
8-K Open Document | Data Open Filing 8-K 05 Jan 2026 05 Jan 2026 001-38864
4 Open Document Open Filing 4 10 Dec 2025 08 Dec 2025
10-Q Open Document | Data Open Filing 10-Q 06 Nov 2025 30 Sep 2025 001-38864
8-K Open Document | Data Open Filing 8-K 06 Nov 2025 06 Nov 2025 001-38864
8-K Open Document | Data Open Filing 8-K 03 Oct 2025 03 Oct 2025 001-38864
10-Q Open Document | Data Open Filing 10-Q 07 Aug 2025 30 Jun 2025 001-38864
8-K Open Document | Data Open Filing 8-K 07 Aug 2025 07 Aug 2025 001-38864
SCHEDULE 13G/A Open Document Open Filing 16 Jul 2025 005-90981
4 Open Document Open Filing 4 16 Jul 2025 24 Jan 2025
8-K Open Document | Data Open Filing 8-K 02 Jul 2025 02 Jul 2025 001-38864
S-8 Open Document Open Filing S-8 17 Jun 2025 333-288116
4 Open Document Open Filing 4 03 Jun 2025 30 May 2025
4 Open Document Open Filing 4 03 Jun 2025 30 May 2025
4 Open Document Open Filing 4 03 Jun 2025 30 May 2025
4 Open Document Open Filing 4 03 Jun 2025 30 May 2025
8-K Open Document | Data Open Filing 8-K 03 Jun 2025 30 May 2025 001-38864
4 Open Document Open Filing 4 02 Jun 2025 29 May 2025
10-Q Open Document | Data Open Filing 10-Q 07 May 2025 31 Mar 2025 001-38864
8-K Open Document | Data Open Filing 8-K 07 May 2025 07 May 2025 001-38864
8-K Open Document | Data Open Filing 8-K 02 May 2025 02 May 2025 001-38864
DEF 14A Open Document | Data Open Filing DEF 14A 15 Apr 2025 30 May 2025 001-38864
DEFA14A Open Document Open Filing DEFA14A 15 Apr 2025 001-38864
ARS Open Document Open Filing ARS 15 Apr 2025 31 Dec 2024 001-38864
8-K Open Document | Data Open Filing 8-K 03 Apr 2025 03 Apr 2025 001-38864
3 Open Document Open Filing OWNERSHIP DOCUMENT 02 Apr 2025 05 Mar 2025
4 Open Document Open Filing 4 19 Mar 2025 18 Mar 2025
4 Open Document Open Filing 4 19 Mar 2025 18 Mar 2025
4 Open Document Open Filing 4 19 Mar 2025 18 Mar 2025
4 Open Document Open Filing 4 19 Mar 2025 18 Mar 2025
4 Open Document Open Filing 4 06 Mar 2025 05 Mar 2025
10-K Open Document | Data Open Filing 10-K 05 Mar 2025 31 Dec 2024 001-38864
8-K Open Document | Data Open Filing 8-K 05 Mar 2025 05 Mar 2025 001-38864
8-K Open Document | Data Open Filing 8-K 03 Feb 2025 03 Feb 2025 001-38864
4 Open Document Open Filing 4 22 Jan 2025 17 Jan 2025
8-K Open Document | Data Open Filing 8-K 03 Jan 2025 03 Jan 2025 001-38864
4 Open Document Open Filing 4 20 Dec 2024 18 Dec 2024
4 Open Document Open Filing 4 18 Dec 2024 16 Dec 2024
UPLOAD Open Document Open Filing 18 Nov 2024 001-38864
SC 13G/A Open Document Open Filing SC 13G/A 13 Nov 2024 005-90981
10-Q Open Document | Data Open Filing 10-Q 12 Nov 2024 30 Sep 2024 001-38864
8-K Open Document | Data Open Filing 8-K 12 Nov 2024 12 Nov 2024 001-38864
CORRESP Open Document Open Filing 12 Nov 2024
SC 13G/A Open Document Open Filing 08 Nov 2024 005-90981
UPLOAD Open Document Open Filing 07 Nov 2024 001-38864
8-K Open Document | Data Open Filing 8-K 04 Nov 2024 04 Nov 2024 001-38864
4 Open Document Open Filing OWNERSHIP DOCUMENT 01 Nov 2024 02 Oct 2024
SC 13G/A Open Document Open Filing 24 Oct 2024 005-90981
8-K Open Document | Data Open Filing 8-K 03 Oct 2024 03 Oct 2024 001-38864
CORRESP Open Document Open Filing 01 Oct 2024
SC 13D/A Open Document Open Filing SC 13D/A 24 Sep 2024 005-90981
4 Open Document Open Filing 4 24 Sep 2024 20 Sep 2024
UPLOAD Open Document Open Filing 11 Sep 2024 001-38864
3 Open Document Open Filing 3 09 Sep 2024 01 Sep 2024
CORRESP Open Document Open Filing 04 Sep 2024
3 Open Document Open Filing 04 Sep 2024 07 Aug 2024
SC 13G Open Document Open Filing SC 13G 04 Sep 2024 005-90981
8-K Open Document | Data Open Filing 8-K 04 Sep 2024 01 Sep 2024 001-38864
UPLOAD Open Document Open Filing 20 Aug 2024 001-38864
4 Open Document Open Filing 4 19 Aug 2024 15 Aug 2024
4 Open Document Open Filing 4 13 Aug 2024 12 Aug 2024
CORRESP Open Document Open Filing 09 Aug 2024
10-Q Open Document | Data Open Filing 10-Q 07 Aug 2024 30 Jun 2024 001-38864
8-K Open Document | Data Open Filing 8-K 07 Aug 2024 07 Aug 2024 001-38864
4 Open Document Open Filing 4 05 Aug 2024 01 Aug 2024
8-K Open Document | Data Open Filing 8-K 02 Aug 2024 02 Aug 2024 001-38864
4 Open Document Open Filing 4 31 Jul 2024 29 Jul 2024
4 Open Document Open Filing 4 26 Jul 2024 24 Jul 2024
4/A Open Document Open Filing 4/A 26 Jul 2024 19 Jul 2024
SC 13D/A Open Document Open Filing SC 13D/A 26 Jul 2024 005-90981
4 Open Document Open Filing 4 23 Jul 2024 19 Jul 2024
4 Open Document Open Filing 4 12 Jul 2024 10 Jul 2024
UPLOAD Open Document Open Filing 11 Jul 2024 001-38864
4 Open Document Open Filing 4 03 Jul 2024 01 Jul 2024
SC 13D/A Open Document Open Filing SC 13D/A 03 Jul 2024 005-90981
8-K Open Document | Data Open Filing 8-K 03 Jul 2024 03 Jul 2024 001-38864
4 Open Document Open Filing 4 01 Jul 2024 27 Jun 2024
4 Open Document Open Filing 4 17 Jun 2024 13 Jun 2024
4 Open Document Open Filing 4 10 Jun 2024 07 Jun 2024
4 Open Document Open Filing 4 10 Jun 2024 07 Jun 2024
4 Open Document Open Filing 4 10 Jun 2024 07 Jun 2024
4 Open Document Open Filing 4 10 Jun 2024 07 Jun 2024
4 Open Document Open Filing 4 10 Jun 2024 07 Jun 2024
8-K Open Document | Data Open Filing 8-K 10 Jun 2024 07 Jun 2024 001-38864
8-K Open Document | Data Open Filing 8-K 06 Jun 2024 05 Jun 2024 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jun 2024 03 Jun 2024
SC 13G Open Document Open Filing SC 13G 03 Jun 2024 005-90981
SC 13D/A Open Document Open Filing SC 13D/A 03 Jun 2024 005-90981
4 Open Document Open Filing FORM 4 SUBMISSION 31 May 2024 29 May 2024
4 Open Document Open Filing 4 28 May 2024 24 May 2024
3 Open Document Open Filing FORM 3 SUBMISSION 24 May 2024 17 May 2024
8-K Open Document | Data Open Filing 8-K 22 May 2024 20 May 2024 001-38864
SC 13D/A Open Document Open Filing SC 13D/A 14 May 2024 005-90981
10-Q Open Document | Data Open Filing 10-Q 08 May 2024 31 Mar 2024 001-38864
8-K Open Document | Data Open Filing 8-K 08 May 2024 08 May 2024 001-38864
8-K Open Document | Data Open Filing 8-K 02 May 2024 02 May 2024 001-38864
ARS Open Document Open Filing ARS 25 Apr 2024 31 Dec 2023 001-38864
DEFA14A Open Document Open Filing DEFA14A 25 Apr 2024 001-38864
DEF 14A Open Document | Data Open Filing DEF 14A 25 Apr 2024 07 Jun 2024 001-38864
3/A Open Document Open Filing 3/A 12 Apr 2024 12 Apr 2022
8-K Open Document | Data Open Filing 8-K 12 Apr 2024 08 Apr 2024 001-38864
SC 13D/A Open Document Open Filing SC 13D/A 11 Apr 2024 005-90981
8-K Open Document | Data Open Filing 8-K 03 Apr 2024 03 Apr 2024 001-38864
4 Open Document Open Filing 4 21 Mar 2024 19 Mar 2024
4 Open Document Open Filing 4 21 Mar 2024 19 Mar 2024
4 Open Document Open Filing 4 21 Mar 2024 19 Mar 2024
4 Open Document Open Filing 4 21 Mar 2024 19 Mar 2024
10-K Open Document | Data Open Filing 10-K 14 Mar 2024 31 Dec 2023 001-38864
8-K Open Document | Data Open Filing 8-K 14 Mar 2024 14 Mar 2024 001-38864
4 Open Document Open Filing 4 04 Mar 2024 29 Feb 2024
4 Open Document Open Filing 4 04 Mar 2024 29 Feb 2024
4 Open Document Open Filing 4 04 Mar 2024 29 Feb 2024
4 Open Document Open Filing OWNERSHIP DOCUMENT 01 Mar 2024 17 Jan 2024
3 Open Document Open Filing OWNERSHIP DOCUMENT 01 Mar 2024 29 Dec 2023
3 Open Document Open Filing OWNERSHIP DOCUMENT 01 Mar 2024 20 Dec 2023
3 Open Document Open Filing 3 26 Feb 2024 22 Feb 2024
8-K Open Document | Data Open Filing 8-K 26 Feb 2024 22 Feb 2024 001-38864
SC 13G/A Open Document Open Filing AMENDMENT NO. 2 TO THE SCHEDULE 13G 13 Feb 2024 005-90981
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO THE SCHEDULE 13G 13 Feb 2024 005-90981
SC 13D/A Open Document Open Filing AMENDMENT NO. 13 TO SCHEDULE 13D 09 Feb 2024 005-90981
4 Open Document Open Filing 09 Feb 2024 07 Feb 2024
SC 13D/A Open Document Open Filing SC 13D/A 09 Feb 2024 005-90981
8-K Open Document | Data Open Filing 8-K 02 Feb 2024 02 Feb 2024 001-38864
3 Open Document Open Filing 3 01 Feb 2024 18 Jan 2024
SC 13G Open Document Open Filing 25 Jan 2024 005-90981
SC 13D/A Open Document Open Filing SC 13D/A 23 Jan 2024 005-90981
8-K Open Document | Data Open Filing 8-K 22 Jan 2024 18 Jan 2024 001-38864
8-K Open Document | Data Open Filing 8-K 03 Jan 2024 03 Jan 2024 001-38864
SC 13D/A Open Document Open Filing SC 13D/A 22 Dec 2023 005-90981
4 Open Document Open Filing 4 28 Nov 2023 27 Nov 2023
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2023 15 Nov 2023
10-Q Open Document | Data Open Filing 10-Q 08 Nov 2023 30 Sep 2023 001-38864
8-K Open Document | Data Open Filing 8-K 08 Nov 2023 08 Nov 2023 001-38864
8-K Open Document | Data Open Filing 8-K 03 Nov 2023 03 Nov 2023 001-38864
8-K Open Document | Data Open Filing 8-K 02 Nov 2023 01 Nov 2023 001-38864
8-K Open Document | Data Open Filing 8-K 16 Oct 2023 13 Oct 2023 001-38864
SC 13D/A Open Document Open Filing SC 13D/A 05 Oct 2023 005-90981
8-K Open Document | Data Open Filing 8-K 03 Oct 2023 03 Oct 2023 001-38864
8-K Open Document | Data Open Filing 8-K 28 Sep 2023 25 Sep 2023 001-38864
4 Open Document Open Filing 4 22 Aug 2023 21 Aug 2023
4 Open Document Open Filing 4 16 Aug 2023 14 Aug 2023
4 Open Document Open Filing 4 16 Aug 2023 14 Aug 2023
4 Open Document Open Filing 4 15 Aug 2023 14 Aug 2023
10-Q Open Document | Data Open Filing 10-Q 09 Aug 2023 30 Jun 2023 001-38864
8-K Open Document | Data Open Filing 8-K 09 Aug 2023 09 Aug 2023 001-38864
4 Open Document Open Filing 07 Aug 2023 04 Aug 2023
SC 13D/A Open Document Open Filing AMENDMENT NO. 12 TO SCHEDULE 13D 07 Aug 2023 005-90981
8-K Open Document | Data Open Filing 8-K 02 Aug 2023 02 Aug 2023 001-38864
SC 13D/A Open Document Open Filing AMENDMENT NO. 11 TO SCHEDULE 13D 25 Jul 2023 005-90981
8-K Open Document | Data Open Filing 8-K 25 Jul 2023 20 Jul 2023 001-38864
424B5 Open Document Open Filing 424B5 24 Jul 2023 333-237387
4 Open Document Open Filing OWNERSHIP DOCUMENT 21 Jul 2023 21 Jul 2023
424B5 Open Document Open Filing 424B5 20 Jul 2023 333-237387
8-K Open Document | Data Open Filing 8-K 20 Jul 2023 20 Jul 2023 001-38864
8-K Open Document | Data Open Filing 8-K 03 Jul 2023 03 Jul 2023 001-38864
8-K Open Document | Data Open Filing 8-K 30 Jun 2023 28 Jun 2023 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2023 09 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2023 09 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2023 09 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2023 09 Jun 2023
8-K Open Document | Data Open Filing 8-K 12 Jun 2023 09 Jun 2023 001-38864
S-8 Open Document Open Filing S-8 08 Jun 2023 333-272531
4 Open Document Open Filing 4 05 Jun 2023 01 Jun 2023
4 Open Document Open Filing 4 23 May 2023 19 May 2023
SC 13D Open Document Open Filing SC 13D 19 May 2023 005-90981
10-Q Open Document | Data Open Filing 10-Q 10 May 2023 31 Mar 2023 001-38864
8-K Open Document | Data Open Filing 8-K 10 May 2023 10 May 2023 001-38864
EFFECT Open Document Open Filing 03 May 2023 333-270809
8-K Open Document | Data Open Filing 8-K 02 May 2023 02 May 2023 001-38864
CORRESP Open Document Open Filing 01 May 2023
ARS Open Document Open Filing ARS 27 Apr 2023 31 Dec 2022 001-38864
DEFA14A Open Document Open Filing DEFA14A 27 Apr 2023 001-38864
DEF 14A Open Document | Data Open Filing DEF 14A 27 Apr 2023 001-38864
SC 13D/A Open Document Open Filing AMENDMENT NO. 10 TO SCHEDULE 13D 18 Apr 2023 005-90981
4 Open Document Open Filing 17 Apr 2023 13 Apr 2023
4 Open Document Open Filing 06 Apr 2023 04 Apr 2023
4 Open Document Open Filing FORM 4 SUBMISSION 04 Apr 2023 01 Apr 2023
4 Open Document Open Filing FORM 4 SUBMISSION 04 Apr 2023 01 Apr 2023
4 Open Document Open Filing FORM 4 SUBMISSION 04 Apr 2023 01 Apr 2023
8-K Open Document | Data Open Filing 8-K 04 Apr 2023 04 Apr 2023 001-38864
UPLOAD Open Document Open Filing 30 Mar 2023
S-3 Open Document | Data Open Filing S-3 23 Mar 2023 333-270809
8-K Open Document | Data Open Filing 8-K 23 Mar 2023 17 Mar 2023 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 20 Mar 2023 16 Mar 2023
4 Open Document Open Filing FORM 4 SUBMISSION 20 Mar 2023 16 Mar 2023
4 Open Document Open Filing FORM 4 SUBMISSION 20 Mar 2023 16 Mar 2023
4 Open Document Open Filing FORM 4 SUBMISSION 14 Mar 2023 14 Mar 2023
10-K Open Document | Data Open Filing 10-K 09 Mar 2023 31 Dec 2022 001-38864
8-K Open Document | Data Open Filing 8-K 09 Mar 2023 09 Mar 2023 001-38864
8-K Open Document | Data Open Filing 8-K 07 Mar 2023 01 Mar 2023 001-38864
SC 13G Open Document Open Filing THE SCHEDULE 13G 03 Mar 2023 005-90981
SC 13G/A Open Document Open Filing SC 13G/A 14 Feb 2023 005-90981
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2023 005-90981
8-K Open Document | Data Open Filing 8-K 01 Feb 2023 01 Feb 2023 001-38864
8-K Open Document | Data Open Filing 8-K 04 Jan 2023 04 Jan 2023 001-38864
10-Q Open Document | Data Open Filing 10-Q 09 Nov 2022 30 Sep 2022 001-38864
8-K Open Document | Data Open Filing 8-K 09 Nov 2022 09 Nov 2022 001-38864
8-K Open Document | Data Open Filing 8-K 03 Nov 2022 01 Nov 2022 001-38864
8-K Open Document | Data Open Filing 8-K 01 Nov 2022 01 Nov 2022 001-38864
8-K Open Document | Data Open Filing 8-K 18 Oct 2022 13 Oct 2022 001-38864
8-K Open Document | Data Open Filing 8-K 04 Oct 2022 03 Oct 2022 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 22 Sep 2022 12 Aug 2022
UPLOAD Open Document Open Filing 30 Aug 2022
CORRESP Open Document Open Filing 19 Aug 2022
UPLOAD Open Document Open Filing 10 Aug 2022
10-Q Open Document | Data Open Filing 10-Q 09 Aug 2022 30 Jun 2022 001-38864
8-K Open Document | Data Open Filing 8-K 09 Aug 2022 30 Jun 2022 001-38864
8-K Open Document | Data Open Filing 8-K 02 Aug 2022 29 Jul 2022 001-38864
4 Open Document Open Filing 28 Jul 2022 26 Jul 2022
4 Open Document Open Filing 25 Jul 2022 21 Jul 2022
4 Open Document Open Filing 20 Jul 2022 18 Jul 2022
8-K Open Document | Data Open Filing 8-K 12 Jul 2022 06 Jul 2022 001-38864
4 Open Document Open Filing 07 Jul 2022 05 Jul 2022
8-K Open Document | Data Open Filing 8-K 06 Jul 2022 06 Jul 2022 001-38864
4 Open Document Open Filing 01 Jul 2022 29 Jun 2022
8-K Open Document | Data Open Filing 8-K 01 Jul 2022 01 Jul 2022 001-38864
4 Open Document Open Filing 28 Jun 2022 24 Jun 2022
8-K Open Document | Data Open Filing 8-K 23 Jun 2022 23 Jun 2022 001-38864
8-K Open Document | Data Open Filing 8-K 14 Jun 2022 13 Jun 2022 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2022 09 Jun 2022
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2022 09 Jun 2022
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2022 09 Jun 2022
4 Open Document Open Filing FORM 4 SUBMISSION 13 Jun 2022 09 Jun 2022
4 Open Document Open Filing FORM 4 SUBMISSION 27 May 2022 26 May 2022
4 Open Document Open Filing FORM 4 SUBMISSION 20 May 2022 16 May 2022
4 Open Document Open Filing 19 May 2022 17 May 2022
4 Open Document Open Filing FORM 4 SUBMISSION 16 May 2022 13 May 2022
4 Open Document Open Filing FORM 4 SUBMISSION 16 May 2022 13 May 2022
4 Open Document Open Filing 11 May 2022 09 May 2022
8-K Open Document | Data Open Filing 8-K 10 May 2022 10 May 2022 001-38864
10-Q Open Document | Data Open Filing 10-Q 10 May 2022 31 Mar 2022 001-38864
SC 13D/A Open Document Open Filing AMENDMENT NO. 9 TO SCHEDULE 13D 06 May 2022 005-90981
4 Open Document Open Filing 29 Apr 2022 27 Apr 2022
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2022 01 Apr 2021
DEFA14A Open Document Open Filing DEFA14A 27 Apr 2022 001-38864
DEF 14A Open Document Open Filing DEF 14A 27 Apr 2022 09 Jun 2022 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2022 09 Jun 2021
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2022 09 Jun 2021
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2022 09 Jun 2021
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2022 09 Jun 2021
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2022 01 Apr 2021
4 Open Document Open Filing 26 Apr 2022 22 Apr 2022
3 Open Document Open Filing FORM 3 SUBMISSION 22 Apr 2022 12 Apr 2022
4 Open Document Open Filing 21 Apr 2022 19 Apr 2022
8-K Open Document | Data Open Filing 8-K 18 Apr 2022 18 Apr 2022 001-38864
8-K Open Document | Data Open Filing 8-K 05 Apr 2022 05 Apr 2022 001-38864
10-K Open Document | Data Open Filing 10-K 31 Mar 2022 31 Dec 2021 001-38864
8-K Open Document | Data Open Filing 8-K 31 Mar 2022 31 Mar 2022 001-38864
4 Open Document Open Filing 28 Mar 2022 24 Mar 2022
NT 10-K Open Document Open Filing NT 10-K - FILING EXTENSION 10 Mar 2022 31 Dec 2021 001-38864
4 Open Document Open Filing 09 Mar 2022 07 Mar 2022
4 Open Document Open Filing 03 Mar 2022 01 Mar 2022
4 Open Document Open Filing 25 Feb 2022 23 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 17 Feb 2022 14 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 17 Feb 2022 14 Feb 2022
4 Open Document Open Filing 16 Feb 2022 14 Feb 2022
SC 13G/A Open Document Open Filing 14 Feb 2022 005-90981
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 14 Feb 2022 005-90981
4 Open Document Open Filing 08 Feb 2022 04 Feb 2022
SC 13D/A Open Document Open Filing AMENDMENT NO. 8 TO SCHEDULE 13D 08 Feb 2022 005-90981
SC 13G Open Document Open Filing SC 13G 04 Feb 2022 005-90981
4 Open Document Open Filing 31 Jan 2022 27 Jan 2022
4 Open Document Open Filing 26 Jan 2022 24 Jan 2022
4 Open Document Open Filing 21 Jan 2022 19 Jan 2022
4 Open Document Open Filing 13 Jan 2022 11 Jan 2022
8-K Open Document | Data Open Filing 8-K 06 Jan 2022 06 Jan 2022 001-38864
8-K Open Document | Data Open Filing 8-K 05 Jan 2022 05 Jan 2022 001-38864
8-K Open Document | Data Open Filing 8-K 04 Jan 2022 04 Jan 2022 001-38864
4 Open Document Open Filing 03 Jan 2022 30 Dec 2021
8-K Open Document | Data Open Filing 8-K 16 Dec 2021 16 Dec 2021 001-38864
4 Open Document Open Filing 15 Dec 2021 13 Dec 2021
8-K Open Document | Data Open Filing 8-K 15 Dec 2021 15 Dec 2021 001-38864
8-K Open Document | Data Open Filing 8-K 02 Dec 2021 02 Dec 2021 001-38864
8-K Open Document | Data Open Filing 8-K 18 Nov 2021 18 Nov 2021 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 16 Nov 2021 12 Nov 2021
8-K Open Document | Data Open Filing 8-K 12 Nov 2021 12 Nov 2021 001-38864
10-Q Open Document | Data Open Filing 10-Q 12 Nov 2021 30 Sep 2021 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 04 Nov 2021 02 Nov 2021
SC 13D/A Open Document Open Filing AMENDMENT NO. 7 TO SCHEDULE 13D 01 Nov 2021 005-90981
4 Open Document Open Filing 29 Oct 2021 30 Sep 2021
4 Open Document Open Filing 20 Oct 2021 18 Oct 2021
8-K Open Document | Data Open Filing 8-K GIBSON ACQUISITION 06 Oct 2021 06 Oct 2021 001-38864
8-K Open Document | Data Open Filing 8-K 04 Oct 2021 04 Oct 2021 001-38864
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Sep 2021 15 Sep 2021
4 Open Document Open Filing FORM 4 SUBMISSION 16 Sep 2021 14 Sep 2021
4 Open Document Open Filing 10 Sep 2021 08 Sep 2021
8-K Open Document | Data Open Filing 8-K 02 Sep 2021 02 Sep 2021 001-38864
4 Open Document Open Filing 23 Aug 2021 19 Aug 2021
10-Q Open Document | Data Open Filing ALTG_10-Q_6.30.21 12 Aug 2021 30 Jun 2021 001-38864
8-K Open Document | Data Open Filing 8-K 12 Aug 2021 12 Aug 2021 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 03 Aug 2021 07 Jun 2021
EFFECT Open Document Open Filing 16 Jul 2021 333-249672
424B3 Open Document Open Filing HOWELL 424B3 16 Jul 2021 333-249672
EFFECT Open Document Open Filing 12 Jul 2021 333-237387
424B3 Open Document Open Filing 424B3 12 Jul 2021 333-237387
POS AM Open Document Open Filing POS AM 09 Jul 2021 333-249672
8-K Open Document Open Filing 8-K DIVIDEND PAYMENT JULY_2021 02 Jul 2021 02 Jul 2021 001-38864
POS AM Open Document Open Filing POS AM 01 Jul 2021 333-237387
4 Open Document Open Filing FORM 4 SUBMISSION 25 Jun 2021 10 Jun 2021
8-K Open Document Open Filing 8-K 11 Jun 2021 11 Jun 2021 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 11 Jun 2021 10 Jun 2021
8-K Open Document Open Filing 8-K - CFO RSU SELL/BUY 28 May 2021 28 May 2021 001-38864
SC 13D/A Open Document Open Filing SC 13D/A 19 May 2021 005-90981
4 Open Document Open Filing FORM 4 SUBMISSION 18 May 2021 14 May 2021
10-Q Open Document | Data Open Filing ALTG-10Q-03.31.2021 13 May 2021 31 Mar 2021 001-38864
8-K Open Document Open Filing 8-K-ER-2021-Q1 13 May 2021 13 May 2021 001-38864
DEFA14A Open Document Open Filing DEFA14A 27 Apr 2021 001-38864
DEF 14A Open Document Open Filing DEF 14A 27 Apr 2021 09 Jun 2021 001-38864
4 Open Document Open Filing FORM 4 SUBMISSION 20 Apr 2021 12 Apr 2021
4 Open Document Open Filing FORM 4 SUBMISSION 20 Apr 2021 12 Apr 2021
4 Open Document Open Filing 12 Apr 2021 12 Apr 2021
8-K Open Document Open Filing 8-K 12 Apr 2021 12 Apr 2021 001-38864
25-NSE Open Document Open Filing 12 Apr 2021 001-38864
8-K Open Document Open Filing 8-K OFFERING_MEMO_FINAL 05 Apr 2021 05 Apr 2021 001-38864
8-K Open Document Open Filing 8-K OFFERING MEMORANDUM 25 Mar 2021 25 Mar 2021 001-38864
SC 13D/A Open Document Open Filing AMENDMENT NO. 6 TO SCHEDULE 13D 23 Mar 2021 005-90981
8-K Open Document Open Filing 8K_WARRANTS_DEF 14C 22 Mar 2021 22 Mar 2021 001-38864
DEF 14C Open Document Open Filing DEF 14C - WARRANTS 22 Mar 2021 22 Mar 2021 001-38864
8-K Open Document Open Filing 8-K 2020 Y-END ER 18 Mar 2021 18 Mar 2021 001-38864
10-K Open Document | Data Open Filing 10-K 18 Mar 2021 31 Dec 2020 001-38864
SC 13D/A Open Document Open Filing AMENDMENT NO. 5 TO SCHEDULE 13D 11 Mar 2021 005-90981
8-K Open Document Open Filing 8-K WARRANT EXCHANGE 03 Mar 2021 03 Mar 2021 001-38864
PRE 14C Open Document Open Filing PRE 14C 03 Mar 2021 03 Mar 2021 001-38864
SC 13G/A Open Document Open Filing SC 13G/A 16 Feb 2021 005-90981
SC 13G/A Open Document Open Filing 16 Feb 2021 005-90981
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 16 Feb 2021 005-90981
SC 13G Open Document Open Filing SC 13G 16 Feb 2021 005-90981
SC 13G/A Open Document Open Filing FORM SC 13G/A 08 Feb 2021 005-90981
SC 13G Open Document Open Filing SC 13G 21 Jan 2021 005-90981
8-K Open Document Open Filing 8-K VANTAGE ANNOUNCEMENT 05 Jan 2021 05 Jan 2021 001-38864
CERT Open Document Open Filing NYSE CERTIFICATION 30 Dec 2020 001-38864
8-K Open Document Open Filing 8-K VANTAGE ANNOUNCEMENT 22 Dec 2020 22 Dec 2020 001-38864
8-K Open Document Open Filing 8-K 22 Dec 2020 17 Dec 2020 001-38864
424B1 Open Document Open Filing 424B1 21 Dec 2020 333-251097
POS462B Open Document Open Filing POS462B 18 Dec 2020 333-251468
8-A12B Open Document Open Filing 8-A12B 18 Dec 2020 001-38864
S-1MEF Open Document Open Filing S-1MEF 18 Dec 2020 333-251468
FWP Open Document Open Filing FWP 18 Dec 2020 333-251097
EFFECT Open Document Open Filing 17 Dec 2020 333-251097
S-1/A Open Document Open Filing S-1/A 16 Dec 2020 333-251097
CORRESP Open Document Open Filing 16 Dec 2020
S-1/A Open Document Open Filing S-1/A 15 Dec 2020 333-251097
UPLOAD Open Document Open Filing 08 Dec 2020
S-1 Open Document | Data Open Filing S-1 03 Dec 2020 333-251097
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2020 17 Nov 2020
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2020 17 Nov 2020
424B3 Open Document Open Filing 424B3(2) 12 Nov 2020 333-237387
10-Q Open Document | Data Open Filing 10-Q 12 Nov 2020 30 Sep 2020 001-38864
424B3 Open Document Open Filing 424B3 12 Nov 2020 333-249672
8-K Open Document Open Filing 8-K 12 Nov 2020 12 Nov 2020 001-38864
EFFECT Open Document Open Filing 03 Nov 2020 333-249672
424B3 Open Document Open Filing 424B3 03 Nov 2020 333-249672
8-K Open Document Open Filing 8-K 02 Nov 2020 02 Nov 2020 001-38864
CORRESP Open Document Open Filing 30 Oct 2020
UPLOAD Open Document Open Filing 29 Oct 2020
S-1 Open Document | Data Open Filing S-1 26 Oct 2020 333-249672
8-K Open Document Open Filing 8-K 15 Oct 2020 15 Oct 2020 001-38864
8-K Open Document Open Filing 8-K 10 Sep 2020 10 Sep 2020 001-38864
8-K Open Document Open Filing 8-K 21 Aug 2020 21 Aug 2020 001-38864
424B3 Open Document Open Filing 424B3 13 Aug 2020 333-237387
10-Q Open Document | Data Open Filing 10-Q 13 Aug 2020 30 Jun 2020 001-38864
8-K Open Document Open Filing 8-K 13 Aug 2020 13 Aug 2020 001-38864
8-K Open Document Open Filing 8-K 31 Jul 2020 31 Jul 2020 001-38864
S-8 Open Document Open Filing S-8 20 Jul 2020 333-239956
8-K Open Document Open Filing 8-K 01 Jul 2020 01 Jul 2020 001-38864
SC 13G Open Document Open Filing 26 Jun 2020 005-90981
8-K Open Document Open Filing 8-K 18 Jun 2020 18 Jun 2020 001-38864
8-K Open Document Open Filing 8-K 15 Jun 2020 15 Jun 2020 001-38864
8-K Open Document Open Filing 8-K 02 Jun 2020 02 Jun 2020 001-38864
424B3 Open Document Open Filing 424B3 14 May 2020 333-237387
10-Q Open Document | Data Open Filing 10-Q 14 May 2020 31 Mar 2020 001-38864
8-K Open Document Open Filing 8-K 14 May 2020 14 May 2020 001-38864
4/A Open Document Open Filing 27 Apr 2020 28 Feb 2020
4/A Open Document Open Filing 27 Apr 2020 25 Feb 2020
4/A Open Document Open Filing 27 Apr 2020 06 Feb 2020
4/A Open Document Open Filing 27 Apr 2020 15 Jan 2020
4/A Open Document Open Filing 27 Apr 2020 09 Jan 2020
EFFECT Open Document Open Filing 03 Apr 2020 333-237387
424B3 Open Document Open Filing 03 Apr 2020 333-237387
CORRESP Open Document Open Filing 01 Apr 2020
UPLOAD Open Document Open Filing 01 Apr 2020
8-K/A Open Document Open Filing FORM 8-K/A 31 Mar 2020 25 Mar 2020 001-38864
S-1 Open Document | Data Open Filing REGISTRATION STATEMENT 25 Mar 2020 333-237387
8-K/A Open Document Open Filing AMENDMENT TO CURRENT REPORT 25 Mar 2020 14 Feb 2020 001-38864
10-K Open Document | Data Open Filing ANNUAL REPORT 25 Mar 2020 31 Dec 2019 001-38864
8-K Open Document Open Filing CURRENT REPORT 25 Mar 2020 25 Mar 2020 001-38864
SC 13D/A Open Document Open Filing AMENDMENT NO. 4 TO SCHEDULE 13D 17 Mar 2020 005-90981
4 Open Document Open Filing OWNERSHIP DOCUMENT 13 Mar 2020 11 Mar 2020
4 Open Document Open Filing OWNERSHIP DOCUMENT 10 Mar 2020 06 Mar 2020
8-K Open Document Open Filing 8-K 04 Mar 2020 04 Mar 2020 001-38864
4 Open Document Open Filing OWNERSHIP DOCUMENT 03 Mar 2020 28 Feb 2020
SC 13D/A Open Document Open Filing AMENDMENT NO. 3 TO SCHEDULE 13D/A 03 Mar 2020 005-90981
4 Open Document Open Filing 27 Feb 2020 25 Feb 2020
4 Open Document Open Filing 24 Feb 2020 20 Feb 2020
SC 13D/A Open Document Open Filing FORM SC 13D/A 24 Feb 2020 005-90981
SC 13D Open Document Open Filing SCHEDULE 13D 24 Feb 2020 005-90981
SC 13D/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13D 24 Feb 2020 005-90981
4 Open Document Open Filing 19 Feb 2020 14 Feb 2020
4 Open Document Open Filing 19 Feb 2020 14 Feb 2020
4 Open Document Open Filing 19 Feb 2020 14 Feb 2020
4 Open Document Open Filing 19 Feb 2020 14 Feb 2020
4 Open Document Open Filing 19 Feb 2020 14 Feb 2020
3 Open Document Open Filing 19 Feb 2020 14 Feb 2020
3 Open Document Open Filing 19 Feb 2020 14 Feb 2020
3 Open Document Open Filing 19 Feb 2020 14 Feb 2020
3 Open Document Open Filing 19 Feb 2020 14 Feb 2020
3 Open Document Open Filing 19 Feb 2020 14 Feb 2020
4 Open Document Open Filing 19 Feb 2020 14 Feb 2020
25-NSE Open Document Open Filing 18 Feb 2020 001-38864
4 Open Document Open Filing 14 Feb 2020 12 Feb 2020
SC 13G Open Document Open Filing SC 13G 14 Feb 2020 005-90981
8-K12B Open Document Open Filing FOR REGISTRATION OF CERTAIN CLASSES 14 Feb 2020 14 Feb 2020 001-38864
8-A12B/A Open Document Open Filing AMENDMENT NO. 1 TO FORM 8-A 14 Feb 2020 001-38864
SC 13G/A Open Document Open Filing AQR CAPITAL MANAGEMENT LLC 14 Feb 2020 005-90981
SC 13G/A Open Document Open Filing SC 13G 14 Feb 2020 005-90981
SC 13G/A Open Document Open Filing B. RILEY PRINCIPAL MERGER CORP. 13 Feb 2020 005-90981
4 Open Document Open Filing 12 Feb 2020 10 Feb 2020
8-K Open Document Open Filing CURRENT REPORT 11 Feb 2020 11 Feb 2020 001-38864
4 Open Document Open Filing 10 Feb 2020 06 Feb 2020
4 Open Document Open Filing 10 Feb 2020 06 Feb 2020
SC 13G Open Document Open Filing FORM SC 13G 10 Feb 2020 005-90981
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 07 Feb 2020 001-38864
8-K Open Document Open Filing CURRENT REPORT 07 Feb 2020 07 Feb 2020 001-38864
4 Open Document Open Filing 05 Feb 2020 03 Feb 2020
4 Open Document Open Filing 05 Feb 2020 03 Feb 2020
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 04 Feb 2020 001-38864
8-K Open Document Open Filing CURRENT REPORT 04 Feb 2020 03 Feb 2020 001-38864
4 Open Document Open Filing OWNERSHIP DOCUMENT 28 Jan 2020 24 Jan 2020
4 Open Document Open Filing OWNERSHIP DOCUMENT 28 Jan 2020 24 Jan 2020
DEFM14A Open Document Open Filing PROXY STATEMENT 23 Jan 2020 001-38864
4 Open Document Open Filing 17 Jan 2020 15 Jan 2020
4 Open Document Open Filing OWNERSHIP DOCUMENT 14 Jan 2020 09 Jan 2020
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 13 Jan 2020 001-38864
8-K Open Document Open Filing CURRENT REPORT 13 Jan 2020 13 Jan 2020 001-38864
PREM14A Open Document Open Filing PRELIMINARY PROXY STATEMENT 13 Dec 2019 13 Dec 2019 001-38864
DEFA14A Open Document Open Filing FORM DEFA14A 13 Dec 2019 001-38864
8-K Open Document Open Filing CURRENT REPORT 13 Dec 2019 13 Dec 2019 001-38864
8-K Open Document Open Filing CURRENT REPORT 13 Dec 2019 12 Dec 2019 001-38864
DEFA14A Open Document Open Filing CURRENT REPORT 13 Dec 2019 001-38864
10-Q Open Document | Data Open Filing QUARTERLY REPORT 12 Nov 2019 30 Sep 2019 001-38864
8-K Open Document Open Filing CURRENT REPORT 23 Aug 2019 20 Aug 2019 001-38864
4 Open Document Open Filing 16 Aug 2019 30 Apr 2019
10-Q Open Document | Data Open Filing QUARTERLY REPORT 13 Aug 2019 30 Jun 2019 001-38864
10-Q Open Document | Data Open Filing FORM 10-Q 21 May 2019 31 Mar 2019 001-38864
8-K Open Document Open Filing FORM 8-K 22 Apr 2019 22 Apr 2019 001-38864
SC 13G Open Document Open Filing B. RILEY PRINCIPAL MERGER CORP. 18 Apr 2019 005-90981
8-K Open Document Open Filing FORM 8-K 17 Apr 2019 11 Apr 2019 001-38864
SC 13G Open Document Open Filing AQR CAPITAL MANAGEMENT LLC 16 Apr 2019 005-90981
SC 13D Open Document Open Filing SC 13D 15 Apr 2019 005-90981
4 Open Document Open Filing FORM 4 12 Apr 2019 12 Apr 2019
4 Open Document Open Filing FORM 4 11 Apr 2019 08 Apr 2019
8-K Open Document Open Filing FORM 8-K 11 Apr 2019 08 Apr 2019 001-38864
424B4 Open Document Open Filing 424B4 09 Apr 2019 333-230286
3 Open Document Open Filing FORM 3 09 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 09 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 09 Apr 2019 08 Apr 2019
EFFECT Open Document Open Filing 08 Apr 2019 333-230286
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
3 Open Document Open Filing FORM 3 08 Apr 2019 08 Apr 2019
CERT Open Document Open Filing NYSE CERTIFICATION 05 Apr 2019 001-38864
8-A12B Open Document Open Filing 8-A12B 05 Apr 2019 001-38864
CORRESP Open Document Open Filing 04 Apr 2019
CORRESP Open Document Open Filing 04 Apr 2019
S-1/A Open Document Open Filing FORM S1A 04 Apr 2019 333-230286
S-1/A Open Document Open Filing S-1/A 26 Mar 2019 333-230286
S-1 Open Document Open Filing FORM S1 14 Mar 2019 333-230286
CORRESP Open Document Open Filing 14 Mar 2019
UPLOAD Open Document Open Filing 14 Mar 2019
DRS/A Open Document Open Filing 08 Mar 2019 377-02408
DRS/A Open Document Open Filing 04 Mar 2019 377-02408
DRS/A Open Document Open Filing 07 Feb 2019 377-02408
UPLOAD Open Document Open Filing 30 Jan 2019
DRS Open Document Open Filing 10 Dec 2018 377-02408