Hyliion Holdings Corp.

Symbol
HYLN on NYSE
Business address
1202 Bmc Drive, Suite 100, 78613 Cedar Park, TX
State of incorporation
DE
Fiscal year end
December 31
Former names
Tortoise Acquisition Corp. (to 9/28/2020)
Get insider transactions for this issuer
Hyliion Holdings Corp. has filed 583 SEC EDGAR filings since 11/20/2018

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing FORM 4 Dec 3, 2025 Dec 3, 2025
144 Open Document Open Filing Dec 3, 2025 001-38823
4 Open Document Open Filing FORM 4 Dec 1, 2025 Nov 28, 2025
4 Open Document Open Filing FORM 4 Dec 1, 2025 Nov 27, 2025
4 Open Document Open Filing FORM 4 Dec 1, 2025 Nov 26, 2025
4 Open Document Open Filing FORM 4 Nov 18, 2025 Nov 17, 2025
4 Open Document Open Filing FORM 4 Nov 18, 2025 Nov 17, 2025
4 Open Document Open Filing FORM 4 Nov 18, 2025 Nov 17, 2025
4/A Open Document Open Filing FORM 4/A Nov 18, 2025 Aug 25, 2025
4/A Open Document Open Filing FORM 4/A Nov 18, 2025 Aug 25, 2025
4/A Open Document Open Filing FORM 4/A Nov 18, 2025 Aug 25, 2025
4 Open Document Open Filing FORM 4 Nov 18, 2025 Nov 14, 2025
4 Open Document Open Filing FORM 4 Nov 17, 2025 Nov 13, 2025
4 Open Document Open Filing FORM 4 Nov 17, 2025 Nov 13, 2025
4 Open Document Open Filing FORM 4 Nov 17, 2025 Nov 13, 2025
4/A Open Document Open Filing FORM 4/A Nov 17, 2025 Aug 25, 2025
144 Open Document Open Filing Nov 17, 2025 001-38823
144 Open Document Open Filing Nov 17, 2025 001-38823
144 Open Document Open Filing Nov 17, 2025 001-38823
144 Open Document Open Filing Nov 17, 2025 001-38823
4 Open Document Open Filing FORM 4 Nov 14, 2025 Nov 12, 2025
10-Q Open Document | Data Open Filing 10-Q Nov 12, 2025 Sep 30, 2025 001-38823
8-K Open Document | Data Open Filing 8-K Nov 12, 2025 Nov 11, 2025 001-38823
4 Open Document Open Filing FORM 4 Nov 10, 2025 Nov 8, 2025
4 Open Document Open Filing FORM 4 Nov 6, 2025 Nov 6, 2025
SCHEDULE 13G/A Open Document Open Filing Oct 17, 2025 005-90949
4 Open Document Open Filing FORM 4 Sep 2, 2025 Sep 2, 2025
4 Open Document Open Filing FORM 4 Sep 2, 2025 Sep 2, 2025
4 Open Document Open Filing FORM 4 Aug 29, 2025 Aug 28, 2025
4 Open Document Open Filing FORM 4 Aug 29, 2025 Aug 27, 2025
4 Open Document Open Filing FORM 4 Aug 29, 2025 Aug 27, 2025
4 Open Document Open Filing FORM 4 Aug 25, 2025 Aug 25, 2025
4 Open Document Open Filing FORM 4 Aug 25, 2025 Aug 25, 2025
4 Open Document Open Filing FORM 4 Aug 25, 2025 Aug 25, 2025
4 Open Document Open Filing FORM 4 Aug 25, 2025 Aug 25, 2025
4 Open Document Open Filing FORM 4 Aug 21, 2025 Aug 21, 2025
4 Open Document Open Filing FORM 4 Aug 14, 2025 Aug 12, 2025
4 Open Document Open Filing FORM 4 Aug 14, 2025 Aug 12, 2025
4 Open Document Open Filing FORM 4 Aug 14, 2025 Aug 12, 2025
10-Q Open Document | Data Open Filing 10-Q Aug 12, 2025 Jun 30, 2025 001-38823
8-K Open Document | Data Open Filing 8-K Aug 12, 2025 Aug 12, 2025 001-38823
4 Open Document Open Filing FORM 4 Aug 8, 2025 Aug 8, 2025
4 Open Document Open Filing FORM 4 Aug 8, 2025 Aug 6, 2025
SD Open Document Open Filing SPECIALIZED DISCLOSURE REPORT May 30, 2025 001-38823
4 Open Document Open Filing FORM 4 May 28, 2025 May 28, 2025
4 Open Document Open Filing FORM 4 May 28, 2025 May 28, 2025
4 Open Document Open Filing FORM 4 May 28, 2025 May 28, 2025
4 Open Document Open Filing FORM 4 May 28, 2025 May 27, 2025
4 Open Document Open Filing FORM 4 May 28, 2025 May 27, 2025
4 Open Document Open Filing FORM 4 May 27, 2025 May 23, 2025
4 Open Document Open Filing FORM 4 May 27, 2025 May 23, 2025
4 Open Document Open Filing FORM 4 May 27, 2025 May 23, 2025
8-K Open Document | Data Open Filing CURRENT REPORT May 21, 2025 May 20, 2025 001-38823
4 Open Document Open Filing FORM 4 May 14, 2025 May 13, 2025
4 Open Document Open Filing FORM 4 May 14, 2025 May 13, 2025
4 Open Document Open Filing FORM 4 May 14, 2025 May 13, 2025
4 Open Document Open Filing FORM 4 May 14, 2025 May 13, 2025
4 Open Document Open Filing FORM 4 May 14, 2025 May 13, 2025
4 Open Document Open Filing FORM 4 May 14, 2025 May 13, 2025
4 Open Document Open Filing FORM 4 May 14, 2025 May 12, 2025
10-Q Open Document | Data Open Filing 10-Q May 13, 2025 Mar 31, 2025 001-38823
8-K Open Document | Data Open Filing 8-K May 13, 2025 May 13, 2025 001-38823
4 Open Document Open Filing FORM 4 May 8, 2025 May 8, 2025
DEF 14A Open Document | Data Open Filing DEF 14A Apr 8, 2025 May 20, 2025 001-38823
4 Open Document Open Filing FORM 4 Mar 26, 2025 Mar 26, 2025
4 Open Document Open Filing FORM 4 Mar 26, 2025 Mar 26, 2025
4 Open Document Open Filing FORM 4 Mar 26, 2025 Mar 26, 2025
4 Open Document Open Filing FORM 4 Mar 18, 2025 Mar 18, 2025
4 Open Document Open Filing FORM 4 Mar 6, 2025 Mar 5, 2025
4 Open Document Open Filing FORM 4 Mar 3, 2025 Feb 28, 2025
4 Open Document Open Filing FORM 4 Mar 3, 2025 Feb 28, 2025
4 Open Document Open Filing FORM 4 Mar 3, 2025 Feb 28, 2025
4 Open Document Open Filing FORM 4 Mar 3, 2025 Feb 28, 2025
4 Open Document Open Filing FORM 4 Mar 3, 2025 Feb 28, 2025
4 Open Document Open Filing FORM 4 Feb 27, 2025 Feb 27, 2025
4 Open Document Open Filing FORM 4 Feb 27, 2025 Feb 27, 2025
10-K Open Document | Data Open Filing 10-K Feb 25, 2025 Dec 31, 2024 001-38823
8-K Open Document | Data Open Filing 8-K Feb 25, 2025 Feb 25, 2025 001-38823
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
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4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
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4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 20, 2025 Feb 18, 2025
4 Open Document Open Filing FORM 4 Feb 13, 2025 Feb 13, 2025
4 Open Document Open Filing FORM 4 Feb 13, 2025 Feb 13, 2025
4 Open Document Open Filing FORM 4 Feb 13, 2025 Feb 13, 2025
4 Open Document Open Filing FORM 4 Feb 13, 2025 Feb 13, 2025
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4 Open Document Open Filing FORM 4 Feb 13, 2025 Feb 13, 2025
4 Open Document Open Filing FORM 4 Feb 13, 2025 Feb 12, 2025
4 Open Document Open Filing FORM 4 Feb 10, 2025 Feb 8, 2025
4 Open Document Open Filing FORM 4 Dec 27, 2024 Dec 26, 2024
4 Open Document Open Filing FORM 4 Dec 27, 2024 Dec 26, 2024
4 Open Document Open Filing FORM 4 Dec 19, 2024 Dec 18, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 12, 2024 Dec 11, 2024
4 Open Document Open Filing FORM 4 Dec 2, 2024 Nov 30, 2024
4 Open Document Open Filing FORM 4 Dec 2, 2024 Nov 30, 2024
4 Open Document Open Filing FORM 4 Nov 29, 2024 Nov 28, 2024
4 Open Document Open Filing FORM 4 Nov 29, 2024 Nov 28, 2024
4 Open Document Open Filing FORM 4 Nov 29, 2024 Nov 28, 2024
4 Open Document Open Filing FORM 4 Nov 29, 2024 Nov 27, 2024
4 Open Document Open Filing FORM 4 Nov 22, 2024 Nov 22, 2024
4 Open Document Open Filing FORM 4 Nov 20, 2024 Nov 20, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
4 Open Document Open Filing FORM 4 Nov 18, 2024 Nov 14, 2024
25 Open Document Open Filing FORM 25 Nov 15, 2024 001-38823
10-Q Open Document | Data Open Filing 10-Q Nov 14, 2024 Sep 30, 2024 001-38823
8-K Open Document | Data Open Filing 8-K Nov 14, 2024 Nov 14, 2024 001-38823
4 Open Document Open Filing FORM 4 Nov 8, 2024 Nov 8, 2024
CERT Open Document Open Filing NYSE AMERICAN CERTIFICATION Nov 6, 2024 001-38823
8-A12B Open Document Open Filing FOR REGISTRATION OF CERTAIN CLASSES Nov 6, 2024 001-38823
8-K Open Document | Data Open Filing 8-K Nov 5, 2024 Nov 5, 2024 001-38823
4 Open Document Open Filing FORM 4 Sep 27, 2024 Sep 26, 2024
4 Open Document Open Filing FORM 4 Sep 27, 2024 Sep 26, 2024
4 Open Document Open Filing FORM 4 Sep 18, 2024 Sep 18, 2024
4 Open Document Open Filing FORM 4 Sep 11, 2024 Sep 11, 2024
4 Open Document Open Filing FORM 4 Sep 3, 2024 Aug 31, 2024
4 Open Document Open Filing FORM 4 Sep 3, 2024 Aug 31, 2024
4 Open Document Open Filing FORM 4 Aug 28, 2024 Aug 28, 2024
4 Open Document Open Filing FORM 4 Aug 28, 2024 Aug 28, 2024
4 Open Document Open Filing FORM 4 Aug 28, 2024 Aug 28, 2024
4 Open Document Open Filing FORM 4 Aug 28, 2024 Aug 27, 2024
4 Open Document Open Filing FORM 4 Aug 28, 2024 Aug 27, 2024
4 Open Document Open Filing FORM 4 Aug 13, 2024 Aug 13, 2024
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4 Open Document Open Filing FORM 4 Aug 13, 2024 Aug 13, 2024
4 Open Document Open Filing FORM 4 Aug 8, 2024 Aug 8, 2024
4 Open Document Open Filing FORM 4 Aug 8, 2024 Aug 6, 2024
S-8 Open Document Open Filing REGISTRATION STATEMENT Aug 6, 2024 333-281305
10-Q Open Document | Data Open Filing 10-Q Aug 6, 2024 Jun 30, 2024 001-38823
8-K Open Document | Data Open Filing 8-K Aug 6, 2024 Aug 6, 2024 001-38823
4 Open Document Open Filing FORM 4 Jun 27, 2024 Jun 26, 2024
4 Open Document Open Filing FORM 4 Jun 27, 2024 Jun 26, 2024
4 Open Document Open Filing FORM 4 Jun 20, 2024 Jun 18, 2024
4 Open Document Open Filing FORM 4 Jun 17, 2024 Jun 12, 2024
4 Open Document Open Filing FORM 4 Jun 3, 2024 May 31, 2024
4 Open Document Open Filing FORM 4 Jun 3, 2024 May 31, 2024
SD Open Document Open Filing SPECIALIZED DISCLOSURE REPORT May 30, 2024 001-38823
4 Open Document Open Filing FORM 4 May 28, 2024 May 28, 2024
4 Open Document Open Filing FORM 4 May 28, 2024 May 28, 2024
4 Open Document Open Filing FORM 4 May 28, 2024 May 28, 2024
4 Open Document Open Filing FORM 4 May 28, 2024 May 27, 2024
4 Open Document Open Filing FORM 4 May 28, 2024 May 27, 2024
8-K Open Document | Data Open Filing 8-K May 23, 2024 May 21, 2024 001-38823
DEFA14A Open Document Open Filing DEFA14A May 15, 2024 001-38823
4 Open Document Open Filing FORM 4 May 13, 2024 May 10, 2024
144 Open Document Open Filing May 9, 2024 001-38823
10-Q Open Document | Data Open Filing 10-Q May 1, 2024 Mar 31, 2024 001-38823
8-K Open Document | Data Open Filing 8-K May 1, 2024 Apr 30, 2024 001-38823
DEF 14A Open Document Open Filing DEF 14A Apr 10, 2024 May 21, 2024 001-38823
8-K Open Document | Data Open Filing 8-K Apr 4, 2024 Apr 4, 2024 001-38823
4 Open Document Open Filing FORM 4 Mar 27, 2024 Mar 26, 2024
4 Open Document Open Filing FORM 4 Mar 27, 2024 Mar 26, 2024
4 Open Document Open Filing FORM 4 Mar 27, 2024 Mar 26, 2024
4 Open Document Open Filing FORM 4 Mar 18, 2024 Mar 18, 2024
144 Open Document Open Filing Mar 8, 2024 001-38823
144 Open Document Open Filing Mar 7, 2024 001-38823
8-K Open Document | Data Open Filing 8-K Mar 4, 2024 Mar 4, 2024 001-38823
4 Open Document Open Filing FORM 4 Feb 29, 2024 Feb 27, 2024
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4 Open Document Open Filing FORM 4 Feb 29, 2024 Feb 27, 2024
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4 Open Document Open Filing FORM 4 Feb 29, 2024 Sep 17, 2021
4 Open Document Open Filing FORM 4 Feb 29, 2024 Feb 28, 2024
4 Open Document Open Filing FORM 4 Feb 29, 2024 Feb 28, 2024
144 Open Document Open Filing Feb 21, 2024 001-38823
4 Open Document Open Filing FORM 4 Feb 15, 2024 Feb 13, 2024
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4 Open Document Open Filing FORM 4 Feb 14, 2024 Jun 18, 2023
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 13, 2024 005-90949
8-K Open Document | Data Open Filing 8-K Feb 13, 2024 Feb 13, 2024 001-38823
10-K Open Document | Data Open Filing 10-K Feb 13, 2024 Dec 31, 2023 001-38823
8-K Open Document | Data Open Filing 8-K Feb 13, 2024 Feb 13, 2024 001-38823
4 Open Document Open Filing FORM 4 Feb 9, 2024 Feb 28, 2023
SC 13G/A Open Document Open Filing Jan 31, 2024 005-90949
4 Open Document Open Filing FORM 4 Dec 27, 2023 Dec 26, 2023
4 Open Document Open Filing FORM 4 Dec 27, 2023 Dec 26, 2023
8-K Open Document | Data Open Filing 8-K Dec 20, 2023 Dec 20, 2023 001-38823
4 Open Document Open Filing FORM 4 Dec 18, 2023 Dec 18, 2023
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4 Open Document Open Filing FORM 4 Dec 1, 2023 Nov 30, 2023
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10-Q Open Document | Data Open Filing 10-Q Nov 8, 2023 Sep 30, 2023 001-38823
8-K Open Document | Data Open Filing 8-K Nov 8, 2023 Nov 8, 2023 001-38823
8-K Open Document | Data Open Filing 8-K Oct 10, 2023 Oct 10, 2023 001-38823
4 Open Document Open Filing FORM 4 Sep 27, 2023 Sep 26, 2023
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4 Open Document Open Filing FORM 4 Sep 25, 2023 Sep 18, 2023
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4 Open Document Open Filing FORM 4 Sep 5, 2023 Aug 31, 2023
4 Open Document Open Filing FORM 4 Sep 5, 2023 Aug 31, 2023
4 Open Document Open Filing FORM 4 Sep 5, 2023 Aug 31, 2023
10-Q Open Document | Data Open Filing 10-Q Aug 9, 2023 Jun 30, 2023 001-38823
8-K Open Document | Data Open Filing 8-K Aug 9, 2023 Aug 8, 2023 001-38823
4 Open Document Open Filing FORM 4 Jun 28, 2023 Jun 26, 2023
4 Open Document Open Filing FORM 4 Jun 28, 2023 Jun 26, 2023
8-K Open Document | Data Open Filing CURRENT REPORT Jun 27, 2023 Jun 27, 2023 001-38823
4 Open Document Open Filing FORM 4 Jun 22, 2023 Jun 20, 2023
4 Open Document Open Filing FORM 4 Jun 1, 2023 May 31, 2023
4 Open Document Open Filing FORM 4 Jun 1, 2023 May 31, 2023
4 Open Document Open Filing FORM 4 Jun 1, 2023 May 31, 2023
SD Open Document Open Filing SPECIALIZED DISCLOSURE REPORT May 30, 2023 001-38823
8-K Open Document | Data Open Filing 8-K May 25, 2023 May 23, 2023 001-38823
10-Q Open Document | Data Open Filing 10-Q May 9, 2023 Mar 31, 2023 001-38823
8-K Open Document | Data Open Filing 8-K May 9, 2023 May 9, 2023 001-38823
DEFA14A Open Document Open Filing DEFA14A Apr 10, 2023 001-38823
ARS Open Document Open Filing FORM ARS Apr 7, 2023 Dec 31, 2022 001-38823
DEF 14A Open Document | Data Open Filing DEF 14A Apr 7, 2023 001-38823
4 Open Document Open Filing Mar 28, 2023 Mar 26, 2023
4 Open Document Open Filing Mar 28, 2023 Mar 26, 2023
4 Open Document Open Filing Mar 28, 2023 Mar 26, 2023
4 Open Document Open Filing PRIMARY DOCUMENT Mar 21, 2023 Mar 17, 2023
4 Open Document Open Filing PRIMARY DOCUMENT Mar 21, 2023 Mar 17, 2023
4 Open Document Open Filing PRIMARY DOCUMENT Mar 21, 2023 Mar 17, 2023
4 Open Document Open Filing PRIMARY DOCUMENT Mar 21, 2023 Mar 18, 2023
4 Open Document Open Filing PRIMARY DOCUMENT Mar 21, 2023 Mar 17, 2023
3 Open Document Open Filing Mar 17, 2023 Mar 17, 2023
3 Open Document Open Filing Mar 17, 2023 Mar 17, 2023
3 Open Document Open Filing Mar 17, 2023 Mar 17, 2023
8-K Open Document | Data Open Filing CURRENT REPORT Mar 17, 2023 Mar 17, 2023 001-38823
4 Open Document Open Filing Mar 15, 2023 Mar 14, 2023
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4 Open Document Open Filing FORM 4 Mar 8, 2023 Feb 27, 2023
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8-K Open Document | Data Open Filing CURRENT REPORT Mar 8, 2023 Mar 6, 2023 001-38823
4 Open Document Open Filing FORM 4 Mar 2, 2023 Feb 28, 2023
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10-K Open Document | Data Open Filing 10-K Feb 28, 2023 Dec 31, 2022 001-38823
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8-K Open Document | Data Open Filing 8-K Feb 21, 2023 Feb 17, 2023 001-38823
8-K Open Document | Data Open Filing 8-K Feb 14, 2023 Feb 13, 2023 001-38823
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 9, 2023 005-90949
SC 13G Open Document Open Filing Feb 3, 2023 005-90949
8-K Open Document | Data Open Filing 8-K Dec 21, 2022 Dec 21, 2022 001-38823
4 Open Document Open Filing Nov 21, 2022 Nov 18, 2022
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4 Open Document Open Filing FORM 4 Nov 9, 2022 Nov 8, 2022
10-Q Open Document | Data Open Filing 10-Q Nov 9, 2022 Sep 30, 2022 001-38823
8-K Open Document | Data Open Filing 8-K Nov 9, 2022 Nov 8, 2022 001-38823
8-K Open Document | Data Open Filing CURRENT REPORT Sep 27, 2022 Sep 27, 2022 001-38823
4 Open Document Open Filing FORM 4 Sep 19, 2022 Sep 17, 2022
3 Open Document Open Filing FORM 3 Sep 19, 2022 Sep 12, 2022
8-K Open Document | Data Open Filing CURRENT REPORT Sep 12, 2022 Sep 12, 2022 001-38823
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10-Q Open Document | Data Open Filing 10-Q Aug 9, 2022 Jun 30, 2022 001-38823
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4/A Open Document Open Filing FORM 4/A Jun 27, 2022 Feb 28, 2022
4 Open Document Open Filing FORM 4 Jun 27, 2022 Mar 26, 2022
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SD Open Document Open Filing SPECIALIZED DISCLOSURE REPORT May 27, 2022 001-38823
4 Open Document Open Filing May 20, 2022 May 19, 2022
8-K Open Document | Data Open Filing CURRENT REPORT May 20, 2022 May 19, 2022 001-38823
8-K Open Document | Data Open Filing 8-K May 13, 2022 May 10, 2022 001-38823
10-Q Open Document | Data Open Filing 10-Q May 9, 2022 Mar 31, 2022 001-38823
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SC 13G Open Document Open Filing May 9, 2022 005-90949
4 Open Document Open Filing FORM 4 Apr 28, 2022 Apr 26, 2022
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Mar 25, 2022 001-38823
DEF 14A Open Document Open Filing DEFINITIVE PROXY STATEMENT Mar 25, 2022 May 10, 2022 001-38823
4 Open Document Open Filing Mar 3, 2022 Feb 28, 2022
3 Open Document Open Filing Mar 3, 2022 Feb 28, 2022
4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 2, 2022 Feb 28, 2022
3 Open Document Open Filing OWNERSHIP DOCUMENT Mar 2, 2022 Feb 28, 2022
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4 Open Document Open Filing OWNERSHIP DOCUMENT Feb 28, 2022 Feb 28, 2022
4 Open Document Open Filing Feb 28, 2022 Feb 24, 2022
4 Open Document Open Filing OWNERSHIP DOCUMENT Feb 28, 2022 Feb 28, 2022
4 Open Document Open Filing Feb 28, 2022 Feb 28, 2022
4 Open Document Open Filing Feb 28, 2022 Feb 28, 2022
10-K Open Document | Data Open Filing 10-K Feb 24, 2022 Dec 31, 2021 001-38823
8-K Open Document | Data Open Filing 8-K Feb 24, 2022 Feb 23, 2022 001-38823
SC 13G Open Document Open Filing SCHEDULE 13G Feb 10, 2022 005-90949
3 Open Document Open Filing Feb 7, 2022 Jan 28, 2022
SC 13G Open Document Open Filing Feb 4, 2022 005-90949
4 Open Document Open Filing Feb 4, 2022 Jul 19, 2021
4 Open Document Open Filing Feb 3, 2022 Feb 1, 2022
SC 13G/A Open Document Open Filing SC 13G/A Feb 2, 2022 005-90949
8-K Open Document | Data Open Filing CURRENT REPORT Feb 1, 2022 Jan 28, 2022 001-38823
SC 13G/A Open Document Open Filing SC 13G/A Feb 1, 2022 005-90949
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT Jan 28, 2022 333-249649
424B3 Open Document Open Filing PROSPECTUS Jan 5, 2022 333-249649
EFFECT Open Document Open Filing Jan 4, 2022 333-249649
POS AM Open Document | Data Open Filing POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-1 Dec 30, 2021 333-249649
4 Open Document Open Filing Dec 20, 2021 Dec 16, 2021
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SC 13D/A Open Document Open Filing Dec 6, 2021 005-90949
424B3 Open Document Open Filing 424B3 Nov 10, 2021 333-249649
10-Q Open Document | Data Open Filing 10-Q Nov 10, 2021 Sep 30, 2021 001-38823
8-K Open Document | Data Open Filing 8-K Nov 10, 2021 Nov 9, 2021 001-38823
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4 Open Document Open Filing Oct 12, 2021 Oct 11, 2021
4 Open Document Open Filing Oct 5, 2021 Oct 1, 2021
4 Open Document Open Filing Oct 5, 2021 Sep 24, 2021
4 Open Document Open Filing Oct 5, 2021 Oct 1, 2021
4 Open Document Open Filing Sep 24, 2021 Sep 22, 2021
4 Open Document Open Filing Sep 22, 2021 Sep 20, 2021
SC 13D/A Open Document Open Filing Sep 22, 2021 005-90949
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424B3 Open Document Open Filing 424B3 Aug 26, 2021 333-249649
8-K Open Document | Data Open Filing 8-K Aug 26, 2021 Aug 24, 2021 001-38823
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424B3 Open Document Open Filing 424B3 Aug 24, 2021 333-249649
8-K Open Document | Data Open Filing 8-K Aug 24, 2021 Aug 19, 2021 001-38823
424B3 Open Document Open Filing 424B3 Aug 17, 2021 333-249649
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8-K Open Document | Data Open Filing 8-K Aug 16, 2021 Aug 10, 2021 001-38823
424B3 Open Document Open Filing 424B3 Aug 12, 2021 333-249649
10-Q/A Open Document | Data Open Filing 10-Q/A Aug 12, 2021 Jun 30, 2021 001-38823
424B3 Open Document Open Filing 424B3 Aug 11, 2021 333-249649
10-Q Open Document | Data Open Filing 10-Q Aug 11, 2021 Jun 30, 2021 001-38823
8-K Open Document | Data Open Filing 8-K Aug 11, 2021 Aug 10, 2021 001-38823
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4 Open Document Open Filing FORM 4 Aug 2, 2021 Jul 29, 2021
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424B3 Open Document Open Filing PROSPECTUS Jul 15, 2021 333-249649
EFFECT Open Document Open Filing Jul 14, 2021 333-249649
POS AM Open Document | Data Open Filing POST-EFFECTIVE AMENDMENT NO. 1 TO REGISTRATION STATEMENT Jul 9, 2021 333-249649
4/A Open Document Open Filing FORM 4/A Jul 7, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jun 29, 2021 Jun 25, 2021
8-K Open Document Open Filing 8-K Jun 14, 2021 Jun 8, 2021 001-38823
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4 Open Document Open Filing FORM 4 Jun 4, 2021 Jun 2, 2021
4 Open Document Open Filing FORM 4 Jun 3, 2021 Jun 1, 2021
SD Open Document Open Filing SD Jun 1, 2021 001-38823
4 Open Document Open Filing FORM 4 May 26, 2021 May 25, 2021
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424B3 Open Document Open Filing 424B3 May 24, 2021 333-249649
SC 13D/A Open Document Open Filing May 24, 2021 005-90949
4 Open Document Open Filing May 21, 2021 May 19, 2021
4 Open Document Open Filing May 21, 2021 May 19, 2021
4 Open Document Open Filing May 20, 2021 May 18, 2021
424B3 Open Document Open Filing 424B3 May 17, 2021 333-249649
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT May 17, 2021 333-249649
10-Q Open Document | Data Open Filing 10-Q May 17, 2021 Mar 31, 2021 001-38823
10-K/A Open Document | Data Open Filing AMENDMENT NO. 1 TO FORM 10-K May 17, 2021 Dec 31, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT May 12, 2021 May 11, 2021 001-38823
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT May 11, 2021 333-249649
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT May 11, 2021 333-249649
8-K Open Document Open Filing CURRENT REPORT May 11, 2021 May 10, 2021 001-38823
424B3 Open Document Open Filing 424B3 Apr 30, 2021 333-249649
4 Open Document Open Filing Apr 29, 2021 Apr 16, 2021
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8-K Open Document Open Filing CURRENT REPORT Apr 7, 2021 Apr 7, 2021 001-38823
8-K Open Document Open Filing CURRENT REPORT Apr 1, 2021 Mar 26, 2021 001-38823
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT Mar 31, 2021 333-249649
4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 30, 2021 Mar 26, 2021
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4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 30, 2021 Mar 26, 2021
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4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 30, 2021 Mar 26, 2021
4 Open Document Open Filing Mar 30, 2021 Mar 26, 2021
4 Open Document Open Filing Mar 30, 2021 Mar 26, 2021
4 Open Document Open Filing Mar 30, 2021 Mar 26, 2021
4 Open Document Open Filing Mar 30, 2021 Mar 26, 2021
4 Open Document Open Filing Mar 4, 2021 Mar 2, 2021
SC 13G/A Open Document Open Filing SC 13G/A Mar 2, 2021 005-90949
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT Feb 26, 2021 333-249649
10-K Open Document | Data Open Filing ANNUAL REPORT Feb 26, 2021 Dec 31, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Feb 24, 2021 Feb 23, 2021 001-38823
SC 13G Open Document Open Filing Feb 16, 2021 005-90949
SC 13G/A Open Document Open Filing SCHEDULE 13G HOLDINGS REPORT AMENDMENT Feb 16, 2021 005-90949
SC 13G/A Open Document Open Filing AMENDMENT NO. 2 TO SCHEDULE 13G Feb 16, 2021 005-90949
SC 13G/A Open Document Open Filing KARPUS INVESTMENT MGT / HYLIION HOLDINGS (FKA TORTOISE ACQUISITION CORP) - SCHED Feb 12, 2021 005-90949
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13G Feb 11, 2021 005-90949
SC 13G/A Open Document Open Filing HYLIION HOLDINGS CORP. Feb 11, 2021 005-90949
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8-K Open Document Open Filing CURRENT REPORT Jan 22, 2021 Jan 15, 2021 001-38823
4 Open Document Open Filing FORM 4 SUBMISSION Jan 20, 2021 Jan 15, 2021
8-K Open Document Open Filing CURRENT REPORT Jan 12, 2021 Jan 8, 2021 001-38823
25-NSE Open Document Open Filing Dec 30, 2020 001-38823
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4 Open Document Open Filing FORM 4 SUBMISSION Dec 28, 2020 Dec 23, 2020
S-8 Open Document Open Filing REGISTRATION STATEMENT Dec 14, 2020 333-251328
8-K Open Document Open Filing CURRENT REPORT Dec 7, 2020 Dec 2, 2020 001-38823
3/A Open Document Open Filing FORM 3/A SUBMISSION Dec 2, 2020 Nov 16, 2020
8-K Open Document Open Filing CURRENT REPORT Nov 30, 2020 Nov 30, 2020 001-38823
EFFECT Open Document Open Filing Nov 27, 2020 333-249649
3 Open Document Open Filing FORM 3 SUBMISSION Nov 27, 2020 Oct 16, 2020
424B3 Open Document Open Filing Nov 27, 2020 333-249649
CORRESP Open Document Open Filing Nov 24, 2020
CORRESP Open Document Open Filing Nov 23, 2020
S-1/A Open Document | Data Open Filing REGISTRATION STATEMENT Nov 23, 2020 333-249649
CORRESP Open Document Open Filing Nov 20, 2020
UPLOAD Open Document Open Filing Nov 13, 2020
8-K/A Open Document Open Filing AMENDMENT NO.2 TO CURRENT REPORT Nov 12, 2020 Nov 12, 2020 001-38823
10-Q Open Document | Data Open Filing QUARTERLY REPORT Nov 12, 2020 Sep 30, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Nov 12, 2020 Nov 12, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Oct 29, 2020 Oct 23, 2020 001-38823
S-1 Open Document | Data Open Filing REGISTRATION STATEMENT Oct 23, 2020 333-249649
SC 13G Open Document Open Filing SC 13G Oct 21, 2020 005-90949
SC 13D Open Document Open Filing Oct 13, 2020 005-90949
SC 13G Open Document Open Filing SC 13G Oct 13, 2020 005-90949
SC 13D Open Document Open Filing SC 13D Oct 9, 2020 005-90949
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3 Open Document Open Filing FORM 3 SUBMISSION Oct 7, 2020 Oct 1, 2020
8-K/A Open Document Open Filing AMENDMENT NO. 1 TO FORM 8-K Oct 7, 2020 Oct 1, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Oct 7, 2020 Oct 1, 2020 001-38823
4 Open Document Open Filing OWNERSHIP DOCUMENT Oct 5, 2020 Oct 2, 2020
4 Open Document Open Filing Oct 5, 2020 Oct 2, 2020
4 Open Document Open Filing OWNERSHIP DOCUMENT Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing OWNERSHIP DOCUMENT Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing OWNERSHIP DOCUMENT Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing FORM 4 SUBMISSION Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing FORM 4 SUBMISSION Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing FORM 4 SUBMISSION Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing FORM 4 SUBMISSION Oct 5, 2020 Oct 1, 2020
4 Open Document Open Filing FORM 4 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
3 Open Document Open Filing FORM 3 SUBMISSION Oct 5, 2020 Oct 1, 2020
25-NSE Open Document Open Filing Oct 2, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Oct 1, 2020 Sep 28, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 28, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 28, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Sep 28, 2020 Sep 28, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 28, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 25, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 24, 2020 001-38823
8-K Open Document Open Filing CURRENT REPORT Sep 24, 2020 Sep 24, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 21, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 17, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 15, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 10, 2020 001-38823
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS Sep 10, 2020 001-38823
UPLOAD Open Document Open Filing Sep 8, 2020
DEFM14A Open Document Open Filing Sep 8, 2020 001-38823
CORRESP Open Document Open Filing Aug 31, 2020
PRER14A Open Document Open Filing AMENDMENT NO. 2 TO PRELIMINARY PROXY STATEMENT Aug 31, 2020 001-38823
UPLOAD Open Document Open Filing Aug 26, 2020
PRER14A Open Document Open Filing REVISED PRELIMINARY PROXY STATEMENT Aug 14, 2020 001-38823
CORRESP Open Document Open Filing Aug 13, 2020
UPLOAD Open Document Open Filing Aug 6, 2020
10-Q Open Document | Data Open Filing QUARTERLY REPORT Aug 6, 2020 Jun 30, 2020 001-38823
DEFA14A Open Document Open Filing SOLICITING MATERIAL UNDER 240.14A-12 Jul 30, 2020 001-38823
DEFA14A Open Document Open Filing SOLICITING MATERIAL UNDER 240.14A-12 Jul 29, 2020 001-38823
DEFA14A Open Document Open Filing SOLICITING MATERIAL UNDER 240.14A-12 Jul 21, 2020 001-38823
PREM14A Open Document Open Filing FORM PREM14A Jul 10, 2020 Jul 10, 2020 001-38823
SC 13G/A Open Document Open Filing FORM SC 13G/A Jul 10, 2020 005-90949
DEFA14A Open Document Open Filing SOLICITING MATERIAL UNDER 240.14A-12 Jun 25, 2020 001-38823
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Jun 23, 2020 Jun 19, 2020
8-K Open Document Open Filing CURRENT REPORT Jun 19, 2020 Jun 18, 2020 001-38823
DEFA14A Open Document Open Filing CURRENT REPORT Jun 19, 2020 001-38823
10-Q Open Document | Data Open Filing QUARTERLY REPORT May 7, 2020 Mar 31, 2020 001-38823
SC 13G Open Document Open Filing FORM SC 13G Apr 10, 2020 005-90949
3 Open Document Open Filing INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Apr 3, 2020 Mar 26, 2020
10-K Open Document | Data Open Filing ANNUAL REPORT Mar 23, 2020 Dec 31, 2019 001-38823
SC 13G/A Open Document Open Filing AQR CAPITAL MANAGEMENT LLC Feb 18, 2020 005-90949
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13G Feb 14, 2020 005-90949
SC 13G Open Document Open Filing Feb 14, 2020 005-90949
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13G Feb 14, 2020 005-90949
SC 13G Open Document Open Filing Feb 14, 2020 005-90949
SC 13G Open Document Open Filing SCHEDULE 13G Feb 13, 2020 005-90949
SC 13G/A Open Document Open Filing TORTOISE ACQUISITION CORP. Feb 13, 2020 005-90949
8-K Open Document Open Filing CURRENT REPORT Jan 24, 2020 Jan 23, 2020 001-38823
10-Q Open Document | Data Open Filing QUARTERLY REPORT Nov 12, 2019 Sep 30, 2019 001-38823
10-Q Open Document | Data Open Filing QUARTERLY REPORT Aug 12, 2019 Jun 30, 2019 001-38823
10-Q Open Document | Data Open Filing QUARTERLY REPORT May 13, 2019 Mar 31, 2019 001-38823
4 Open Document Open Filing May 6, 2019 Mar 7, 2019
8-K Open Document Open Filing CURRENT REPORT Apr 19, 2019 Apr 19, 2019 001-38823
SC 13G Open Document Open Filing TORTOISE ACQUISITION CORP. Mar 11, 2019 005-90949
SC 13G Open Document Open Filing SC 13G Mar 11, 2019 005-90949
SC 13G Open Document Open Filing TORTOISE ACQUISITION CORP. Mar 11, 2019 005-90949
8-K Open Document Open Filing CURRENT REPORT Mar 8, 2019 Mar 4, 2019 001-38823
SC 13G Open Document Open Filing AQR CAPITAL MANAGEMENT LLC Mar 8, 2019 005-90949
SC 13G Open Document Open Filing SC 13G Mar 7, 2019 005-90949
4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing Mar 6, 2019 Mar 4, 2019
4 Open Document Open Filing OWNERSHIP DOCUMENT Mar 6, 2019 Mar 4, 2019
8-K Open Document Open Filing CURRENT REPORT Mar 5, 2019 Feb 27, 2019 001-38823
424B4 Open Document Open Filing PROSPECTUS Mar 1, 2019 333-229537
EFFECT Open Document Open Filing Feb 27, 2019 333-229537
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
3 Open Document Open Filing Feb 27, 2019 Feb 27, 2019
CERT Open Document Open Filing NYSE CERTIFICATION FILING-- TORTOISE ACQUISITION CORP. Feb 27, 2019 001-38823
8-A12B Open Document Open Filing REGISTRATION OF CERTAIN CLASSES OF SECURITIES Feb 27, 2019 001-38823
CORRESP Open Document Open Filing Feb 25, 2019
CORRESP Open Document Open Filing Feb 25, 2019
S-1/A Open Document Open Filing AMENDMENT TO FORM S-1 Feb 15, 2019 333-229537
S-1 Open Document Open Filing REGISTRATION STATEMENT Feb 6, 2019 333-229537
DRSLTR Open Document Open Filing Dec 21, 2018
DRS/A Open Document Open Filing Dec 21, 2018 377-02379
UPLOAD Open Document Open Filing Dec 17, 2018
DRS Open Document Open Filing Nov 20, 2018 377-02379