SEC Filings for NATURAL GAS SERVICES GROUP INC (NGS)

Last updated: 2026-03-27 15:10 UTC | Total filings: 1018

Browse the latest SEC filings and forms submitted by NATURAL GAS SERVICES GROUP INC (NGS). Access annual reports, quarterly statements, and other official disclosures.

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Form Filing Date Description Link
SCHEDULE 13G/A March 27, 2026 - View Document
8-K March 18, 2026 8-K View Document
8-K March 16, 2026 8-K View Document
4 March 16, 2026 PRIMARY DOCUMENT View Document
4 March 16, 2026 PRIMARY DOCUMENT View Document
4 March 16, 2026 PRIMARY DOCUMENT View Document
10-K March 16, 2026 10-K View Document
4 March 9, 2026 PRIMARY DOCUMENT View Document
4 March 6, 2026 PRIMARY DOCUMENT View Document
144 March 6, 2026 - View Document
4 March 6, 2026 PRIMARY DOCUMENT View Document
144 March 5, 2026 - View Document
8-K Feb. 9, 2026 8-K View Document
4 Feb. 3, 2026 PRIMARY DOCUMENT View Document
SCHEDULE 13G Jan. 30, 2026 - View Document
8-K Jan. 27, 2026 8-K View Document
SCHEDULE 13D/A Jan. 26, 2026 - View Document
SCHEDULE 13D/A Jan. 7, 2026 - View Document
4 Dec. 30, 2025 PRIMARY DOCUMENT View Document
4 Dec. 12, 2025 PRIMARY DOCUMENT View Document
144 Dec. 11, 2025 - View Document
144 Dec. 10, 2025 - View Document
4 Dec. 10, 2025 PRIMARY DOCUMENT View Document
4 Dec. 9, 2025 PRIMARY DOCUMENT View Document
4 Dec. 5, 2025 PRIMARY DOCUMENT View Document
4 Dec. 5, 2025 PRIMARY DOCUMENT View Document
4 Dec. 5, 2025 PRIMARY DOCUMENT View Document
144 Dec. 4, 2025 - View Document
144 Nov. 20, 2025 - View Document
4 Nov. 20, 2025 PRIMARY DOCUMENT View Document
144 Nov. 19, 2025 - View Document
4 Nov. 18, 2025 PRIMARY DOCUMENT View Document
144 Nov. 17, 2025 - View Document
8-K Nov. 12, 2025 8-K View Document
4 Nov. 12, 2025 PRIMARY DOCUMENT View Document
8-K Nov. 10, 2025 8-K View Document
144 Nov. 10, 2025 - View Document
10-Q Nov. 10, 2025 10-Q View Document
144 Nov. 7, 2025 - View Document
4 Nov. 7, 2025 PRIMARY DOCUMENT View Document
144 Nov. 6, 2025 - View Document
4 Nov. 3, 2025 PRIMARY DOCUMENT View Document
4 Nov. 3, 2025 PRIMARY DOCUMENT View Document
4 Oct. 10, 2025 PRIMARY DOCUMENT View Document
4 Sept. 26, 2025 PRIMARY DOCUMENT View Document
144 Sept. 26, 2025 - View Document
4 Sept. 25, 2025 PRIMARY DOCUMENT View Document
144 Sept. 25, 2025 - View Document
4 Sept. 24, 2025 PRIMARY DOCUMENT View Document
144 Sept. 24, 2025 - View Document
4 Sept. 23, 2025 PRIMARY DOCUMENT View Document
144 Sept. 23, 2025 - View Document
4 Sept. 19, 2025 PRIMARY DOCUMENT View Document
4 Sept. 18, 2025 PRIMARY DOCUMENT View Document
4 Sept. 17, 2025 PRIMARY DOCUMENT View Document
144 Sept. 16, 2025 - View Document
4 Sept. 16, 2025 PRIMARY DOCUMENT View Document
4 Sept. 15, 2025 PRIMARY DOCUMENT View Document
4 Sept. 4, 2025 PRIMARY DOCUMENT View Document
144 Sept. 4, 2025 - View Document
4 Sept. 4, 2025 PRIMARY DOCUMENT View Document
4 Aug. 25, 2025 PRIMARY DOCUMENT View Document
4 Aug. 25, 2025 PRIMARY DOCUMENT View Document
4 Aug. 22, 2025 PRIMARY DOCUMENT View Document
144 Aug. 22, 2025 - View Document
4 Aug. 15, 2025 PRIMARY DOCUMENT View Document
8-K Aug. 13, 2025 8-K View Document
10-Q Aug. 11, 2025 10-Q View Document
8-K Aug. 11, 2025 8-K View Document
8-K July 30, 2025 8-K View Document
S-8 June 27, 2025 S-8 View Document
4/A June 17, 2025 PRIMARY DOCUMENT View Document
4 June 16, 2025 PRIMARY DOCUMENT View Document
8-K June 16, 2025 8-K View Document
4 June 16, 2025 PRIMARY DOCUMENT View Document
4 June 16, 2025 PRIMARY DOCUMENT View Document
4 June 9, 2025 PRIMARY DOCUMENT View Document
4 June 9, 2025 PRIMARY DOCUMENT View Document
4 June 9, 2025 PRIMARY DOCUMENT View Document
4 June 9, 2025 PRIMARY DOCUMENT View Document
4 June 9, 2025 PRIMARY DOCUMENT View Document
8-K June 9, 2025 8-K View Document
4 June 9, 2025 PRIMARY DOCUMENT View Document
SD June 2, 2025 SD View Document
4 May 16, 2025 PRIMARY DOCUMENT View Document
144 May 15, 2025 - View Document
8-K May 14, 2025 8-K View Document
10-Q May 12, 2025 10-Q View Document
8-K May 12, 2025 8-K View Document
DEFA14A April 30, 2025 DEFA14A View Document
ARS April 28, 2025 ARS View Document
DEF 14A April 25, 2025 DEF 14A View Document
4 April 24, 2025 PRIMARY DOCUMENT View Document
8-K April 22, 2025 8-K View Document
4 April 8, 2025 PRIMARY DOCUMENT View Document
8-K April 3, 2025 8-K View Document
4 April 3, 2025 PRIMARY DOCUMENT View Document
3 April 3, 2025 PRIMARY DOCUMENT View Document
8-K March 19, 2025 8-K View Document
4 March 17, 2025 PRIMARY DOCUMENT View Document
10-K March 17, 2025 10-K View Document
4 March 17, 2025 PRIMARY DOCUMENT View Document
8-K March 17, 2025 8-K View Document
4 Jan. 30, 2025 PRIMARY DOCUMENT View Document
SCHEDULE 13D/A Jan. 23, 2025 - View Document
4 Jan. 22, 2025 PRIMARY DOCUMENT View Document
144 Jan. 21, 2025 - View Document
SCHEDULE 13D/A Jan. 16, 2025 - View Document
424B5 Jan. 8, 2025 424B5 View Document
EFFECT Jan. 6, 2025 - View Document
CORRESP Jan. 3, 2025 - View Document
3 Jan. 2, 2025 PRIMARY DOCUMENT View Document
4 Jan. 2, 2025 PRIMARY DOCUMENT View Document
144 Dec. 27, 2024 - View Document
S-3/A Dec. 23, 2024 S-3/A View Document
UPLOAD Dec. 19, 2024 - View Document
4 Dec. 16, 2024 PRIMARY DOCUMENT View Document
8-K Dec. 16, 2024 8-K View Document
SC 13D/A Dec. 13, 2024 SC 13D/A View Document
S-3 Dec. 13, 2024 S-3 View Document
144 Dec. 12, 2024 - View Document
4 Nov. 26, 2024 PRIMARY DOCUMENT View Document
SC 13D/A Nov. 25, 2024 SC 13D/A View Document
144 Nov. 25, 2024 - View Document
SC 13D Nov. 25, 2024 SC 13D View Document
4 Nov. 21, 2024 PRIMARY DOCUMENT View Document
144 Nov. 21, 2024 - View Document
144 Nov. 20, 2024 - View Document
4 Nov. 18, 2024 PRIMARY DOCUMENT View Document
144 Nov. 15, 2024 - View Document
8-K Nov. 15, 2024 8-K View Document
4/A Nov. 15, 2024 PRIMARY DOCUMENT View Document
10-Q Nov. 14, 2024 10-Q View Document
8-K Nov. 14, 2024 8-K View Document
4/A Nov. 13, 2024 PRIMARY DOCUMENT View Document
4 Nov. 13, 2024 PRIMARY DOCUMENT View Document
144 Nov. 12, 2024 - View Document
SC 13G/A Nov. 12, 2024 SC 13G/A View Document
SC 13G Nov. 8, 2024 - View Document
8-K Nov. 7, 2024 8-K View Document
3 Nov. 5, 2024 PRIMARY DOCUMENT View Document
4 Nov. 5, 2024 PRIMARY DOCUMENT View Document
8-K Nov. 1, 2024 8-K View Document
4 Oct. 22, 2024 PRIMARY DOCUMENT View Document
SC 13G Oct. 22, 2024 - View Document
4 Sept. 16, 2024 PRIMARY DOCUMENT View Document
4 Aug. 28, 2024 PRIMARY DOCUMENT View Document
144 Aug. 27, 2024 - View Document
4 Aug. 22, 2024 PRIMARY DOCUMENT View Document
144 Aug. 20, 2024 - View Document
8-K Aug. 15, 2024 8-K View Document
10-Q Aug. 14, 2024 10-Q View Document
8-K Aug. 14, 2024 8-K View Document
8-K Aug. 1, 2024 8-K View Document
4 July 1, 2024 PRIMARY DOCUMENT View Document
8-K June 28, 2024 8-K View Document
8-K June 18, 2024 8-K View Document
4 June 18, 2024 PRIMARY DOCUMENT View Document
4 June 17, 2024 PRIMARY DOCUMENT View Document
4 June 17, 2024 PRIMARY DOCUMENT View Document
4 June 17, 2024 PRIMARY DOCUMENT View Document
4 June 17, 2024 PRIMARY DOCUMENT View Document
8-K June 10, 2024 8-K View Document
DEFA14A June 6, 2024 DEFA14A View Document
SD May 31, 2024 SD View Document
8-K May 30, 2024 8-K View Document
8-K May 17, 2024 8-K View Document
10-Q May 15, 2024 10-Q View Document
8-K May 15, 2024 8-K View Document
4 May 13, 2024 PRIMARY DOCUMENT View Document
4 May 13, 2024 PRIMARY DOCUMENT View Document
4/A May 13, 2024 PRIMARY DOCUMENT View Document
4 May 13, 2024 PRIMARY DOCUMENT View Document
4 May 13, 2024 PRIMARY DOCUMENT View Document
4 May 8, 2024 PRIMARY DOCUMENT View Document
ARS May 3, 2024 ARS View Document
4 May 3, 2024 PRIMARY DOCUMENT View Document
DEFA14A May 2, 2024 DEFA14A View Document
DEF 14A April 29, 2024 DEF 14A View Document
8-K April 1, 2024 8-K View Document
10-K April 1, 2024 10-K View Document
4 March 18, 2024 PRIMARY DOCUMENT View Document
4 March 7, 2024 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 9, 2024 SEC SCHEDULE 13G View Document
SC 13G Feb. 8, 2024 SC 13G View Document
8-K Feb. 1, 2024 8-K View Document
4 Jan. 31, 2024 PRIMARY DOCUMENT View Document
8-K Jan. 4, 2024 8-K View Document
8-K Nov. 20, 2023 8-K View Document
8-K Nov. 15, 2023 8-K View Document
10-Q Nov. 14, 2023 10-Q View Document
8-K Nov. 14, 2023 8-K View Document
8-K Oct. 30, 2023 8-K View Document
3 Oct. 30, 2023 PRIMARY DOCUMENT View Document
4 Oct. 30, 2023 PRIMARY DOCUMENT View Document
3 Oct. 17, 2023 PRIMARY DOCUMENT View Document
4 Oct. 11, 2023 PRIMARY DOCUMENT View Document
8-K Oct. 10, 2023 8-K View Document
3 Oct. 10, 2023 PRIMARY DOCUMENT View Document
8-K Aug. 14, 2023 8-K View Document
10-Q Aug. 14, 2023 10-Q View Document
4 July 25, 2023 FORM 4 SUBMISSION View Document
4 July 5, 2023 PRIMARY DOCUMENT View Document
8-K July 5, 2023 8-K View Document
4 July 5, 2023 PRIMARY DOCUMENT View Document
8-K June 20, 2023 8-K View Document
SC 13G/A June 12, 2023 - View Document
DEFA14A June 9, 2023 DEFA14A View Document
DEFA14A June 7, 2023 DEFA14A View Document
SD May 31, 2023 SD View Document
8-K May 17, 2023 8-K View Document
4/A May 15, 2023 PRIMARY DOCUMENT View Document
8-K May 15, 2023 8-K View Document
10-Q May 15, 2023 10-Q View Document
4 May 11, 2023 PRIMARY DOCUMENT View Document
4 May 11, 2023 PRIMARY DOCUMENT View Document
4 May 11, 2023 FORM 4 SUBMISSION View Document
4 May 11, 2023 PRIMARY DOCUMENT View Document
3 May 8, 2023 FORM 3 SUBMISSION View Document
4/A May 3, 2023 PRIMARY DOCUMENT View Document
3 May 3, 2023 PRIMARY DOCUMENT View Document
SC 13D/A May 3, 2023 SC 13D/A View Document
8-K May 2, 2023 8-K View Document
4 May 2, 2023 PRIMARY DOCUMENT View Document
4 May 2, 2023 PRIMARY DOCUMENT View Document
DEFA14A May 1, 2023 DEFA14A View Document
DEF 14A May 1, 2023 DEF 14A View Document
8-K May 1, 2023 8-K View Document
4 April 27, 2023 PRIMARY DOCUMENT View Document
4 April 27, 2023 PRIMARY DOCUMENT View Document
10-K March 31, 2023 10-K View Document
8-K March 31, 2023 8-K View Document
4 March 22, 2023 PRIMARY DOCUMENT View Document
4 March 22, 2023 PRIMARY DOCUMENT View Document
SC 13D/A March 10, 2023 SC 13D/A View Document
8-K/A March 7, 2023 8-K/A View Document
8-K March 6, 2023 8-K View Document
4 Feb. 23, 2023 FORM 4 View Document
3 Feb. 17, 2023 FORM 3 View Document
SC 13G/A Feb. 14, 2023 NGS 13G/A View Document
8-K Feb. 13, 2023 8-K View Document
SC 13G/A Feb. 10, 2023 SEC SCHEDULE 13G View Document
SC 13G/A Feb. 9, 2023 - View Document
8-K Jan. 25, 2023 8-K CFO RESIGNATION View Document
8-K Jan. 23, 2023 8-K View Document
8-K Jan. 17, 2023 8-K View Document
SC 13D/A Jan. 11, 2023 AMENDMENT TO FORM SC 13D View Document
4 Jan. 3, 2023 FORM 4 View Document
SC 13D/A Dec. 30, 2022 AMENDMENT TO FORM SC 13D View Document
8-K Dec. 28, 2022 8-K View Document
SC 13D/A Dec. 23, 2022 SC 13D/A View Document
4 Dec. 19, 2022 FORM 4 View Document
8-K Dec. 15, 2022 8-K View Document
SC 13D/A Dec. 9, 2022 AMENDMENT TO FORM SC 13D View Document
4 Dec. 8, 2022 FORM 4 View Document
SC 13D Nov. 28, 2022 SCHEDULE 13D View Document
8-K Nov. 16, 2022 8-K View Document
8-K Nov. 14, 2022 8-K View Document
10-Q Nov. 14, 2022 10-Q View Document
8-K Nov. 10, 2022 8-K View Document
4 Aug. 16, 2022 FORM 4 View Document
4 Aug. 16, 2022 FORM 4 View Document
4 Aug. 16, 2022 FORM 4 View Document
8-K Aug. 15, 2022 CURRENT REPORT ON FORM 8-K View Document
10-Q Aug. 15, 2022 QUARTERLY REPORT ON FORM 10-Q FOR THE PERIOD ENDED JUNE 30, 2022 View Document
8-K July 25, 2022 8-K ELECTRIFICATION PRESS RELEASE View Document
8-K/A July 25, 2022 8-K/A HL&B AUDITOR APPOINTMENT View Document
8-K July 22, 2022 8-K View Document
S-8 July 12, 2022 S-8 View Document
4 June 21, 2022 FORM 4 View Document
8-K June 21, 2022 8-K View Document
8-K June 13, 2022 8-K View Document
4 June 13, 2022 FORM 4 View Document
4 June 8, 2022 FORM 4 View Document
4 June 8, 2022 FORM 4 View Document
8-K June 3, 2022 8-K View Document
SD June 2, 2022 SD View Document
4 June 1, 2022 FORM 4 View Document
8-K May 19, 2022 8-K View Document
DEF 14A May 18, 2022 DEF 14A View Document
10-Q May 16, 2022 10-Q View Document
8-K May 16, 2022 8-K View Document
8-K May 2, 2022 8-K View Document
4 May 2, 2022 FORM 4 View Document
4 May 2, 2022 FORM 4 View Document
10-K/A April 29, 2022 10-K/A View Document
4 April 28, 2022 FORM 4 View Document
4 April 28, 2022 FORM 4 View Document
4 April 28, 2022 FORM 4 View Document
4 April 28, 2022 FORM 4 View Document
4 April 12, 2022 FORM 4 View Document
4 April 1, 2022 FORM 4 View Document
4 March 31, 2022 FORM 4 View Document
4 March 31, 2022 FORM 4 View Document
4 March 31, 2022 FORM 4 View Document
4 March 22, 2022 FORM 4 View Document
4 March 22, 2022 FORM 4 View Document
10-K March 18, 2022 10-K View Document
8-K March 17, 2022 8-K View Document
SC 13G/A March 10, 2022 - View Document
4 March 3, 2022 FORM 4 View Document
SC 13G Feb. 11, 2022 NATURAL GAS 13G View Document
SC 13G Feb. 11, 2022 NEURO ONE 13G View Document
SC 13G/A Feb. 9, 2022 - View Document
SC 13G/A Feb. 8, 2022 SEC SCHEDULE 13G View Document
SC 13G/A Feb. 2, 2022 - View Document
EFFECT Dec. 15, 2021 - View Document
CORRESP Dec. 13, 2021 - View Document
S-3/A Dec. 9, 2021 S-3/A View Document
UPLOAD Nov. 29, 2021 - View Document
S-3 Nov. 16, 2021 S-3 View Document
10-Q Nov. 12, 2021 10-Q View Document
8-K Nov. 12, 2021 8-K View Document
4 Oct. 7, 2021 FORM 4 View Document
8-K Oct. 4, 2021 8-K View Document
4 Sept. 14, 2021 FORM 4 View Document
4 Aug. 30, 2021 FORM 4 View Document
10-Q Aug. 16, 2021 10-Q View Document
8-K Aug. 11, 2021 8-K View Document
8-K June 22, 2021 8-K View Document
4 June 21, 2021 PRIMARY DOCUMENT View Document
DEFA14A June 11, 2021 DEFA14A View Document
SD June 1, 2021 SD View Document
10-Q May 14, 2021 10-Q View Document
3 May 14, 2021 PRIMARY DOCUMENT View Document
8-K May 13, 2021 8-K View Document
8-K May 11, 2021 8-K View Document
DEF 14A April 30, 2021 DEF 14A View Document
4 April 30, 2021 PRIMARY DOCUMENT View Document
4 April 30, 2021 PRIMARY DOCUMENT View Document
DEFA14A April 30, 2021 DEFA14A View Document
SC 13D April 15, 2021 SC 13D View Document
8-K April 5, 2021 8-K View Document
3 April 5, 2021 PRIMARY DOCUMENT View Document
4 April 5, 2021 PRIMARY DOCUMENT View Document
4/A April 2, 2021 PRIMARY DOCUMENT View Document
4/A April 2, 2021 PRIMARY DOCUMENT View Document
4 March 31, 2021 PRIMARY DOCUMENT View Document
10-K March 31, 2021 10-K View Document
4 March 31, 2021 PRIMARY DOCUMENT View Document
8-K March 30, 2021 8-K View Document
8-K March 24, 2021 8-K View Document
4 March 22, 2021 PRIMARY DOCUMENT View Document
4 March 22, 2021 PRIMARY DOCUMENT View Document
4 March 22, 2021 PRIMARY DOCUMENT View Document
4 March 22, 2021 PRIMARY DOCUMENT View Document
4 March 22, 2021 PRIMARY DOCUMENT View Document
4 March 22, 2021 PRIMARY DOCUMENT View Document
4 March 17, 2021 PRIMARY DOCUMENT View Document
4 March 17, 2021 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 18, 2021 - View Document
SC 13G/A Feb. 12, 2021 SEC SCHEDULE 13G View Document
SC 13G/A Feb. 11, 2021 - View Document
8-K Feb. 10, 2021 8-K View Document
SC 13G/A Feb. 8, 2021 - View Document
SC 13G/A Feb. 4, 2021 - View Document
3 Jan. 5, 2021 PRIMARY DOCUMENT View Document
4 Jan. 4, 2021 PRIMARY DOCUMENT View Document
SC 13D Jan. 4, 2021 SC 13D View Document
8-K Dec. 30, 2020 8-K View Document
8-K Dec. 15, 2020 8-K View Document
4 Dec. 10, 2020 PRIMARY DOCUMENT View Document
8-K Nov. 17, 2020 8-K View Document
10-Q Nov. 16, 2020 10-Q View Document
NT 10-Q Nov. 5, 2020 NT 10-Q View Document
8-K Oct. 23, 2020 8-K View Document
4 Oct. 16, 2020 PRIMARY DOCUMENT View Document
4 Oct. 2, 2020 PRIMARY DOCUMENT View Document
4 Oct. 2, 2020 PRIMARY DOCUMENT View Document
8-K Aug. 19, 2020 8-K View Document
8-K Aug. 18, 2020 8-K View Document
10-Q Aug. 17, 2020 10-Q View Document
NT 10-Q Aug. 6, 2020 NT 10-Q View Document
DEFA14A Aug. 5, 2020 DEFA14A View Document
SC 13G/A July 10, 2020 - View Document
4 July 1, 2020 PRIMARY DOCUMENT View Document
3 June 22, 2020 PRIMARY DOCUMENT View Document
4 June 22, 2020 PRIMARY DOCUMENT View Document
DEF 14A June 15, 2020 DEF 14A View Document
DEFA14A June 15, 2020 DEFA14A View Document
8-K June 10, 2020 8-K View Document
SD May 29, 2020 SD View Document
8-K May 27, 2020 8-K View Document
8-K May 11, 2020 8-K View Document
10-Q May 11, 2020 10-Q View Document
8-K May 4, 2020 8-K View Document
4 April 30, 2020 PRIMARY DOCUMENT View Document
4 April 30, 2020 PRIMARY DOCUMENT View Document
4 April 30, 2020 PRIMARY DOCUMENT View Document
4 April 30, 2020 PRIMARY DOCUMENT View Document
4 April 30, 2020 PRIMARY DOCUMENT View Document
4 April 30, 2020 PRIMARY DOCUMENT View Document
8-K April 29, 2020 8-K View Document
8-K April 16, 2020 8-K View Document
8-K April 1, 2020 8-K View Document
4 March 31, 2020 PRIMARY DOCUMENT View Document
4 March 31, 2020 PRIMARY DOCUMENT View Document
10-K March 31, 2020 10-K View Document
4 March 31, 2020 PRIMARY DOCUMENT View Document
4 March 25, 2020 PRIMARY DOCUMENT View Document
4 March 18, 2020 PRIMARY DOCUMENT View Document
4 March 18, 2020 PRIMARY DOCUMENT View Document
NT 10-K March 13, 2020 NT 10-K View Document
4 Feb. 19, 2020 PRIMARY DOCUMENT View Document
SC 13G Feb. 13, 2020 - View Document
SC 13G/A Feb. 12, 2020 SCHEDULE 13G/A View Document
SC 13G Feb. 12, 2020 - View Document
SC 13G Feb. 7, 2020 - View Document
SC 13G/A Feb. 5, 2020 - View Document
SC 13G/A Feb. 3, 2020 - View Document
4 Jan. 2, 2020 PRIMARY DOCUMENT View Document
3 Dec. 6, 2019 PRIMARY DOCUMENT View Document
8-K Nov. 19, 2019 8-K View Document
4 Nov. 19, 2019 PRIMARY DOCUMENT View Document
10-Q Nov. 8, 2019 10-Q View Document
8-K Nov. 6, 2019 8-K View Document
4 Oct. 2, 2019 PRIMARY DOCUMENT View Document
SC 13G/A Sept. 19, 2019 - View Document
8-K Aug. 7, 2019 8-K View Document
10-Q Aug. 7, 2019 10-Q View Document
4 July 2, 2019 PRIMARY DOCUMENT View Document
4 July 1, 2019 PRIMARY DOCUMENT View Document
4 July 1, 2019 PRIMARY DOCUMENT View Document
4 July 1, 2019 PRIMARY DOCUMENT View Document
8-K June 21, 2019 8-K View Document
S-8 June 21, 2019 S-8 View Document
DEFA14A June 12, 2019 DEFA14A View Document
4 June 5, 2019 PRIMARY DOCUMENT View Document
SD May 30, 2019 SD View Document
10-Q May 10, 2019 10-Q View Document
8-K May 10, 2019 - View Document
DEFA14A May 2, 2019 DEFA14A View Document
DEF 14A April 30, 2019 DEF 14A View Document
4 April 25, 2019 PRIMARY DOCUMENT View Document
10-K/A April 23, 2019 10-K/A View Document
4 April 10, 2019 PRIMARY DOCUMENT View Document
4 April 2, 2019 PRIMARY DOCUMENT View Document
4 April 2, 2019 PRIMARY DOCUMENT View Document
4 April 2, 2019 PRIMARY DOCUMENT View Document
4 April 2, 2019 PRIMARY DOCUMENT View Document
4 April 1, 2019 PRIMARY DOCUMENT View Document
4 April 1, 2019 PRIMARY DOCUMENT View Document
4 March 27, 2019 PRIMARY DOCUMENT View Document
4 March 27, 2019 PRIMARY DOCUMENT View Document
4 March 19, 2019 PRIMARY DOCUMENT View Document
4 March 19, 2019 PRIMARY DOCUMENT View Document
4 March 19, 2019 PRIMARY DOCUMENT View Document
8-K March 18, 2019 - View Document
SC 13G/A March 18, 2019 ANNUAL AMENDMENT View Document
10-K March 18, 2019 10-K View Document
4 Feb. 28, 2019 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 8, 2019 SCHEDULE 13G/A View Document
4 Feb. 6, 2019 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 6, 2019 - View Document
4 Feb. 4, 2019 PRIMARY DOCUMENT View Document
4 Jan. 30, 2019 PRIMARY DOCUMENT View Document
SC 13G/A Jan. 30, 2019 - View Document
4 Jan. 25, 2019 PRIMARY DOCUMENT View Document
4 Jan. 22, 2019 PRIMARY DOCUMENT View Document
4 Jan. 9, 2019 PRIMARY DOCUMENT View Document
4 Jan. 2, 2019 PRIMARY DOCUMENT View Document
EFFECT Dec. 6, 2018 - View Document
CORRESP Dec. 4, 2018 - View Document
S-3/A Nov. 28, 2018 S-3ASR View Document
UPLOAD Nov. 23, 2018 - View Document
S-3 Nov. 13, 2018 S-3 View Document
8-K Nov. 9, 2018 - View Document
10-Q Nov. 9, 2018 10-Q View Document
SC 13G Nov. 6, 2018 - View Document
4 Oct. 2, 2018 PRIMARY DOCUMENT View Document
4 Sept. 6, 2018 PRIMARY DOCUMENT View Document
4 Aug. 31, 2018 PRIMARY DOCUMENT View Document
4 Aug. 27, 2018 PRIMARY DOCUMENT View Document
4 Aug. 23, 2018 PRIMARY DOCUMENT View Document
10-Q Aug. 9, 2018 10-Q View Document
8-K Aug. 9, 2018 8-K View Document
4 July 3, 2018 PRIMARY DOCUMENT View Document
8-K June 27, 2018 8-K View Document
4 June 5, 2018 PRIMARY DOCUMENT View Document
SD May 29, 2018 SD View Document
8-K May 10, 2018 8-K View Document
10-Q May 10, 2018 10-Q View Document
DEFA14A May 1, 2018 DEFA14A View Document
DEF 14A April 30, 2018 DEF 14A View Document
4 April 10, 2018 PRIMARY DOCUMENT View Document
4 April 10, 2018 PRIMARY DOCUMENT View Document
4 April 3, 2018 PRIMARY DOCUMENT View Document
4 March 28, 2018 PRIMARY DOCUMENT View Document
4 March 27, 2018 PRIMARY DOCUMENT View Document
4 March 27, 2018 PRIMARY DOCUMENT View Document
4 March 27, 2018 PRIMARY DOCUMENT View Document
8-K March 20, 2018 8-K View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 19, 2018 PRIMARY DOCUMENT View Document
4 March 14, 2018 PRIMARY DOCUMENT View Document
10-K March 9, 2018 10-K View Document
8-K March 9, 2018 8-K View Document
4 Feb. 16, 2018 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 9, 2018 SCHEDULE 13G/A View Document
SC 13G/A Feb. 7, 2018 - View Document
SC 13G Feb. 5, 2018 - View Document
4 Jan. 29, 2018 PRIMARY DOCUMENT View Document
4/A Jan. 26, 2018 PRIMARY DOCUMENT View Document
4/A Jan. 26, 2018 PRIMARY DOCUMENT View Document
SC 13G/A Jan. 25, 2018 - View Document
4 Jan. 24, 2018 PRIMARY DOCUMENT View Document
4 Jan. 17, 2018 PRIMARY DOCUMENT View Document
4 Jan. 12, 2018 PRIMARY DOCUMENT View Document
4 Dec. 29, 2017 PRIMARY DOCUMENT View Document
4 Dec. 22, 2017 PRIMARY DOCUMENT View Document
4 Dec. 20, 2017 PRIMARY DOCUMENT View Document
4 Dec. 20, 2017 PRIMARY DOCUMENT View Document
4 Dec. 13, 2017 PRIMARY DOCUMENT View Document
8-K Dec. 5, 2017 8-K View Document
10-Q Nov. 3, 2017 10-Q View Document
8-K Nov. 3, 2017 8-K View Document
4 Oct. 4, 2017 PRIMARY DOCUMENT View Document
4 Sept. 28, 2017 PRIMARY DOCUMENT View Document
8-K Sept. 7, 2017 8-K View Document
10-Q Aug. 4, 2017 10-Q View Document
8-K Aug. 4, 2017 8-K View Document
4 July 5, 2017 PRIMARY DOCUMENT View Document
8-K June 21, 2017 8-K View Document
4 June 21, 2017 PRIMARY DOCUMENT View Document
DEFA14A June 12, 2017 DEFA14A View Document
SC 13G/A June 8, 2017 NONE View Document
4 June 5, 2017 PRIMARY DOCUMENT View Document
SD May 31, 2017 SD View Document
10-Q May 5, 2017 10-Q View Document
8-K May 5, 2017 8-K View Document
4 May 4, 2017 PRIMARY DOCUMENT View Document
DEF 14A May 1, 2017 DEF 14A View Document
DEFA14A May 1, 2017 DEFA14A View Document
4 April 28, 2017 PRIMARY DOCUMENT View Document
4 April 12, 2017 PRIMARY DOCUMENT View Document
4 April 12, 2017 PRIMARY DOCUMENT View Document
8-K March 29, 2017 8-K View Document
4 March 27, 2017 PRIMARY DOCUMENT View Document
4 March 27, 2017 PRIMARY DOCUMENT View Document
4 March 27, 2017 PRIMARY DOCUMENT View Document
4 March 27, 2017 PRIMARY DOCUMENT View Document
4 March 27, 2017 PRIMARY DOCUMENT View Document
4 March 27, 2017 PRIMARY DOCUMENT View Document
4 March 16, 2017 PRIMARY DOCUMENT View Document
4/A March 15, 2017 PRIMARY DOCUMENT View Document
10-K March 10, 2017 10-K View Document
8-K March 10, 2017 8-K View Document
CORRESP March 6, 2017 - View Document
UPLOAD March 6, 2017 - View Document
UPLOAD March 2, 2017 - View Document
8-K Feb. 21, 2017 8-K View Document
4 Feb. 15, 2017 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 14, 2017 NONE View Document
SC 13G/A Feb. 9, 2017 SCHEDULE 13G/A View Document
SC 13G Feb. 7, 2017 - View Document
CORRESP Jan. 30, 2017 - View Document
SC 13G/A Jan. 25, 2017 - View Document
4 Jan. 12, 2017 PRIMARY DOCUMENT View Document
4 Jan. 5, 2017 PRIMARY DOCUMENT View Document
CORRESP Jan. 5, 2017 - View Document
4 Jan. 3, 2017 PRIMARY DOCUMENT View Document
UPLOAD Dec. 27, 2016 - View Document
4 Dec. 13, 2016 PRIMARY DOCUMENT View Document
4 Nov. 23, 2016 PRIMARY DOCUMENT View Document
4 Nov. 18, 2016 PRIMARY DOCUMENT View Document
4 Nov. 14, 2016 PRIMARY DOCUMENT View Document
8-K Nov. 4, 2016 8-K View Document
10-Q Nov. 4, 2016 10-Q View Document
10-Q Aug. 5, 2016 10-Q View Document
8-K Aug. 5, 2016 8-K View Document
S-8 July 6, 2016 S-8 View Document
4 June 24, 2016 PRIMARY DOCUMENT View Document
4 June 24, 2016 PRIMARY DOCUMENT View Document
8-K June 21, 2016 8-K View Document
DEFA14A June 8, 2016 DEFA14A View Document
SD May 27, 2016 SD View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
8-K May 6, 2016 8-K View Document
10-Q May 6, 2016 10-Q View Document
DEFA14A May 3, 2016 DEFA14A View Document
8-K May 2, 2016 8-K View Document
DEF 14A April 29, 2016 DEF 14A View Document
8-K April 13, 2016 8-K View Document
4 April 8, 2016 FORM 4 SUBMISSION View Document
4 April 8, 2016 FORM 4 SUBMISSION View Document
4 April 8, 2016 FORM 4 SUBMISSION View Document
4 April 8, 2016 FORM 4 SUBMISSION View Document
4 April 8, 2016 FORM 4 SUBMISSION View Document
4 April 8, 2016 FORM 4 SUBMISSION View Document
4 March 24, 2016 FORM 4 SUBMISSION View Document
8-K March 11, 2016 8-K View Document
10-K March 11, 2016 10-K View Document
4/A Feb. 9, 2016 FORM 4/A SUBMISSION View Document
SC 13G/A Feb. 9, 2016 NONE View Document
SC 13G/A Feb. 9, 2016 SCHEDULE 13G/A View Document
SC 13G/A Jan. 27, 2016 - View Document
4 Jan. 14, 2016 FORM 4 SUBMISSION View Document
4 Jan. 8, 2016 FORM 4 SUBMISSION View Document
8-K Jan. 8, 2016 8-K View Document
4 Dec. 22, 2015 FORM 4 SUBMISSION View Document
4 Dec. 21, 2015 FORM 4 SUBMISSION View Document
4 Dec. 17, 2015 FORM 4 SUBMISSION View Document
8-K Nov. 6, 2015 8-K View Document
10-Q Nov. 6, 2015 10-Q View Document
10-Q Aug. 7, 2015 10-Q View Document
8-K Aug. 7, 2015 8-K View Document
4 July 2, 2015 FORM 4 SUBMISSION View Document
8-K June 24, 2015 8-K View Document
4 June 22, 2015 FORM 4 SUBMISSION View Document
4 June 18, 2015 FORM 4 SUBMISSION View Document
DEFA14A June 15, 2015 DEFA14A View Document
4 June 12, 2015 FORM 4 SUBMISSION View Document
4 June 12, 2015 FORM 4 SUBMISSION View Document
4 June 12, 2015 FORM 4 SUBMISSION View Document
4 June 12, 2015 FORM 4 SUBMISSION View Document
4 June 12, 2015 FORM 4 SUBMISSION View Document
4 June 12, 2015 FORM 4 SUBMISSION View Document
SD May 29, 2015 SD View Document
10-Q May 8, 2015 10-Q View Document
8-K May 7, 2015 8-K View Document
DEF 14A April 30, 2015 DEF 14A View Document
DEFA14A April 30, 2015 DEFA14A View Document
8-K April 29, 2015 8-K View Document
4 April 2, 2015 FORM 4 SUBMISSION View Document
4 April 1, 2015 FORM 4 SUBMISSION View Document
4 March 30, 2015 FORM 4 SUBMISSION View Document
4 March 26, 2015 FORM 4 SUBMISSION View Document
4 March 25, 2015 FORM 4 SUBMISSION View Document
8-K March 25, 2015 8-K View Document
4 March 23, 2015 FORM 4 SUBMISSION View Document
4 March 23, 2015 FORM 4 SUBMISSION View Document
4 March 23, 2015 FORM 4 SUBMISSION View Document
4 March 23, 2015 FORM 4 SUBMISSION View Document
4 March 23, 2015 FORM 4 SUBMISSION View Document
4 March 23, 2015 FORM 4 SUBMISSION View Document
4 March 20, 2015 FORM 4 SUBMISSION View Document
8-K March 16, 2015 8-K View Document
10-K March 13, 2015 10-K View Document
SC 13G/A Feb. 12, 2015 NONE View Document
SC 13G/A Feb. 5, 2015 SCHEDULE 13G/A View Document
SC 13G/A Jan. 30, 2015 - View Document
4 Jan. 20, 2015 FORM 4 SUBMISSION View Document
8-K Jan. 20, 2015 8-K View Document
8-K Nov. 24, 2014 8-K View Document
10-Q Nov. 7, 2014 10-Q View Document
8-K Nov. 6, 2014 8-K View Document
10-Q Aug. 8, 2014 10-Q View Document
8-K Aug. 7, 2014 8-K View Document
8-K June 6, 2014 8-K View Document
S-8 June 6, 2014 S-8 View Document
SD June 2, 2014 SD View Document
DEFA14A May 30, 2014 DEFA14A View Document
8-K May 6, 2014 8-K View Document
10-Q May 6, 2014 10-Q View Document
8-K April 25, 2014 8-K View Document
DEFA14A April 23, 2014 DEFA14A View Document
DEF 14A April 22, 2014 DEF 14A View Document
8-K March 26, 2014 8-K View Document
4 March 24, 2014 FORM 4 SUBMISSION View Document
4 March 24, 2014 FORM 4 SUBMISSION View Document
4 March 24, 2014 FORM 4 SUBMISSION View Document
4 March 24, 2014 FORM 4 SUBMISSION View Document
4 March 24, 2014 FORM 4 SUBMISSION View Document
4 March 24, 2014 FORM 4 SUBMISSION View Document
8-K March 14, 2014 8-K View Document
10-K March 14, 2014 10-K View Document
SC 13G/A Feb. 13, 2014 NONE View Document
SC 13G/A Feb. 10, 2014 SCHEDULE 13G/A View Document
SC 13G/A Jan. 30, 2014 - View Document
8-K Jan. 29, 2014 8-K View Document
SC 13G/A Jan. 28, 2014 - View Document
4 Jan. 27, 2014 FORM 4 SUBMISSION View Document
5 Jan. 21, 2014 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 9, 2013 FORM 4 SUBMISSION View Document
8-K Nov. 8, 2013 8-K View Document
10-Q Nov. 8, 2013 10-Q View Document
8-K Oct. 25, 2013 8-K View Document
4 Sept. 5, 2013 MAIN DOCUMENT DESCRIPTION View Document
8-K Aug. 9, 2013 8-K View Document
10-Q Aug. 9, 2013 10-Q View Document
8-K June 18, 2013 8-K View Document
4 May 16, 2013 MAIN DOCUMENT DESCRIPTION View Document
8-K May 14, 2013 8-K View Document
10-Q May 10, 2013 10-Q View Document
8-K May 7, 2013 8-K View Document
4 May 2, 2013 MAIN DOCUMENT DESCRIPTION View Document
DEFA14A May 1, 2013 DEFA14A View Document
DEF 14A April 29, 2013 DEF 14A View Document
8-K March 26, 2013 8-K View Document
4 March 25, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 March 20, 2013 MAIN DOCUMENT DESCRIPTION View Document
10-K March 15, 2013 10-K View Document
8-K March 14, 2013 8-K View Document
EFFECT Feb. 15, 2013 - View Document
8-K Feb. 14, 2013 8-K View Document
SC 13G/A Feb. 13, 2013 NONE View Document
CORRESP Feb. 12, 2013 - View Document
SC 13G/A Feb. 11, 2013 SCHEDULE 13G/A View Document
SC 13G/A Feb. 7, 2013 - View Document
SC 13G/A Feb. 5, 2013 - View Document
S-3/A Jan. 28, 2013 AMENDMENT NO. 1 TO FORM S-3 View Document
SC 13G Jan. 17, 2013 - View Document
4 Jan. 15, 2013 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2013 MAIN DOCUMENT DESCRIPTION View Document
8-K Dec. 18, 2012 8-K View Document
4 Dec. 14, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 14, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 4, 2012 MAIN DOCUMENT DESCRIPTION View Document
UPLOAD Nov. 19, 2012 - View Document
10-Q Nov. 9, 2012 10-Q View Document
8-K Nov. 9, 2012 8-K Q3 2012 View Document
S-3 Oct. 31, 2012 FORM S-3 View Document
8-K Oct. 11, 2012 8-K OCT 2012 LAWRENCE COMP INCREASE View Document
10-Q Aug. 8, 2012 2012 6.30 10-Q View Document
8-K Aug. 7, 2012 Q2 2012 EARNINGS 8-K View Document
8-K June 15, 2012 - View Document
4 May 22, 2012 MAIN DOCUMENT DESCRIPTION View Document
8-K May 10, 2012 FORM 8-K View Document
10-Q May 10, 2012 - View Document
DEFA14A April 30, 2012 DEFA14A View Document
DEF 14A April 27, 2012 NGSG 2011 PROXY View Document
4 March 30, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 March 30, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 March 30, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 March 30, 2012 OWNERSHIP DOCUMENT View Document
4 March 30, 2012 MAIN DOCUMENT DESCRIPTION View Document
10-K March 14, 2012 NGSG 2011 FORM 10-K View Document
8-K March 8, 2012 NGSG 4TH QUARTER EARNINGS RELEASE 2011 View Document
SC 13G/A Feb. 14, 2012 NONE View Document
SC 13G/A Feb. 14, 2012 SCHEDULE 13G/A View Document
SC 13G/A Feb. 13, 2012 - View Document
SC 13G/A Feb. 7, 2012 - View Document
4/A Feb. 2, 2012 MAIN DOCUMENT DESCRIPTION View Document
4/A Feb. 2, 2012 MAIN DOCUMENT DESCRIPTION View Document
8-K Jan. 31, 2012 8-K 2012 COMPENSATION View Document
4 Jan. 27, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 27, 2012 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 27, 2012 MAIN DOCUMENT DESCRIPTION View Document
8-K Jan. 9, 2012 NGS FORM 8-K View Document
3 Dec. 20, 2011 MAIN DOCUMENT DESCRIPTION View Document
8-K Dec. 20, 2011 NGS FORM 8K - DIRECTOR APPOINTMENT View Document
8-K Nov. 14, 2011 NGS FORM 8-K View Document
10-Q Nov. 9, 2011 NGS FORM 10-Q 9.30.11 View Document
8-K Sept. 6, 2011 NGS FORM 8-K View Document
4 Aug. 25, 2011 MAIN DOCUMENT DESCRIPTION View Document
10-Q Aug. 9, 2011 NGS FORM 10-Q 06.30.11 View Document
8-K/A Aug. 8, 2011 NGS AMENDED FORM 8-K View Document
8-K Aug. 5, 2011 NGS FORM 8-K View Document
8-K Aug. 1, 2011 NGS FORM 8-K View Document
4 Aug. 1, 2011 MAIN DOCUMENT DESCRIPTION View Document
3 June 20, 2011 MAIN DOCUMENT DESCRIPTION View Document
8-K June 20, 2011 NGS FORM 8-K View Document
4 June 17, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 June 17, 2011 MAIN DOCUMENT DESCRIPTION View Document
SC 13G/A June 10, 2011 DOC ONE View Document
10-Q May 10, 2011 NGS FORM 10-Q View Document
8-K May 10, 2011 NGS FORM 8-K View Document
DEFA14A May 2, 2011 DEFA14A View Document
DEF 14A April 29, 2011 2011 PROXY STATEMENT View Document
4 April 13, 2011 - View Document
4 April 13, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 April 13, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 April 13, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 April 13, 2011 MAIN DOCUMENT DESCRIPTION View Document
10-K March 10, 2011 FORM 10-K EOY 12/31/2010 View Document
8-K March 2, 2011 NGS FORM 8-K View Document
SC 13G/A Feb. 14, 2011 DOC ONE View Document
SC 13G Feb. 11, 2011 SCHEDULE 13G View Document
SC 13G/A Feb. 10, 2011 - View Document
SC 13G/A Feb. 10, 2011 - View Document
SC 13G/A Feb. 7, 2011 - View Document
SC 13G/A Feb. 7, 2011 - View Document
4 Jan. 31, 2011 MAIN DOCUMENT DESCRIPTION View Document
8-K Jan. 28, 2011 NGS FORM 8-K, RESTRICTED SHARES AWARDED View Document
3 Jan. 28, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 26, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 26, 2011 MAIN DOCUMENT DESCRIPTION View Document
UPLOAD Jan. 24, 2011 - View Document
CORRESP Jan. 24, 2011 - View Document
4 Jan. 10, 2011 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 29, 2010 MAIN DOCUMENT DESCRIPTION View Document
CORRESP Dec. 27, 2010 - View Document
4 Dec. 16, 2010 MAIN DOCUMENT DESCRIPTION View Document
4/A Dec. 16, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 16, 2010 MAIN DOCUMENT DESCRIPTION View Document
8-K Dec. 16, 2010 NGS FORM 8-K View Document
4 Dec. 15, 2010 MAIN DOCUMENT DESCRIPTION View Document
UPLOAD Dec. 14, 2010 - View Document
10-Q Nov. 3, 2010 NGS THIRD QUARTER 2010 FORM 10-Q View Document
8-K Nov. 3, 2010 NGS EARNINGS RELEASE FORM 8-K View Document
8-K Sept. 28, 2010 NGS FORM 8-K View Document
8-K Aug. 5, 2010 NGS Q-2 EARNINGS RELEASE 2010 View Document
10-Q Aug. 5, 2010 NGS FORM 10-Q/2ND QUARTER FINANCIALS ENDED 6-30-2010 View Document
8-K July 7, 2010 NGS EXPIRATION OF LINE OF CREDIT View Document
8-K June 18, 2010 NGS ANNUAL VOTE RESULTS & AL BAKER RETIREMENT View Document
4 June 16, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 June 15, 2010 MAIN DOCUMENT DESCRIPTION View Document
8-K May 10, 2010 NGS 8-K TO EARNINGS RELEASE Q-1 2010 View Document
10-Q May 10, 2010 NGS Q-1 ENDING 3-31-2010 View Document
8-K May 6, 2010 NGS-WNB EXTENTION OF LINE OF CREDIT View Document
DEFA14A April 30, 2010 DEFA14A View Document
DEF 14A April 30, 2010 NGS DEFINITIVE PROXY STATEMENT 4-29-2010 View Document
8-K April 19, 2010 NGS CHANGE OF CERTIFYING ACCOUNTANTS View Document
4 March 25, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2010 - View Document
4 March 25, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 March 25, 2010 MAIN DOCUMENT DESCRIPTION View Document
8-K March 4, 2010 NGS FORM 8-K FOR Q-4/EOY 2009 View Document
10-K March 4, 2010 NGS Q4/EOY2009 FINANCIAL RESULTS View Document
SC 13G Feb. 17, 2010 - View Document
SC 13G/A Feb. 16, 2010 DOC ONE View Document
SC 13G/A Feb. 12, 2010 AMENDMENT NO. 4 View Document
SC 13G Jan. 29, 2010 - View Document
8-K Jan. 22, 2010 ST STOCK AWARDS 1-18-2010 View Document
4 Jan. 20, 2010 MAIN DOCUMENT DESCRIPTION View Document
8-K Jan. 8, 2010 NGS RESTRICTED STOCK AWARDS 1-4-2010 View Document
4 Jan. 6, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 6, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 6, 2010 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 16, 2009 MAIN DOCUMENT DESCRIPTION View Document
8-K Dec. 15, 2009 NGS COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS 12-15-2009 View Document
4 Dec. 11, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 11, 2009 MAIN DOCUMENT DESCRIPTION View Document
424B3 Nov. 25, 2009 NGS PROSPECTUS FOR FORM 3 SHELF FILING View Document
EFFECT Nov. 24, 2009 - View Document
UPLOAD Nov. 24, 2009 - View Document
CORRESP Nov. 20, 2009 - View Document
SC 13G Nov. 10, 2009 DOC ONE View Document
10-Q Nov. 6, 2009 NGS 10-Q 3RD QUARTER FINANCIALS 2009 View Document
8-K Nov. 6, 2009 NGS 10-K Q-3 EARNINGS RELEASE 2009 View Document
CORRESP Oct. 22, 2009 - View Document
CORRESP Aug. 27, 2009 - View Document
10-K/A Aug. 27, 2009 2008 10-K AMMENDMENT #1 8-27-2009 View Document
UPLOAD Aug. 24, 2009 - View Document
CORRESP Aug. 17, 2009 - View Document
S-3 Aug. 14, 2009 FORM S-3 View Document
10-Q Aug. 10, 2009 10-Q 2ND QUARTER 6-30-2009 View Document
8-K Aug. 7, 2009 8-K 2ND QUARTER 2009 EARNINGS RELEASE 6-30-09 View Document
UPLOAD July 30, 2009 - View Document
8-K July 14, 2009 FORM 8-K HENSLEY RESIGNATION 7-10-2009 View Document
8-K June 18, 2009 ADOPTED 2009 RESTRICTED STOCK/UNIT PLAN, AMEND 1998 STOCK OPT PLAN 6-18-2009 View Document
S-8 June 18, 2009 REGISTRATION STATEMENT OF 2009 RESTRICTED STOCK/UNIT PLAN 6-18-2009 View Document
8-K June 18, 2009 ADOPTED 2009 RESTRICTED STOCK/UNIT PLAN, AMEND 1998 STOCK OPT PLAN 6-18-2009 View Document
S-8 June 18, 2009 REGISTRATION STATEMENT OF AMENDMENT TO 1998 STOCK OPTION PLAN 6-18-2009 View Document
4 June 9, 2009 MAIN DOCUMENT DESCRIPTION View Document
8-K May 8, 2009 EARNINGS RELEASE 1ST QUARTER 2009 View Document
10-Q May 8, 2009 NGS 10-Q FIRST QUARTER 2009 View Document
DEFA14A May 4, 2009 SCHEDULE 14A View Document
4 April 28, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 April 28, 2009 - View Document
4 April 28, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 April 28, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 April 28, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 April 28, 2009 MAIN DOCUMENT DESCRIPTION View Document
DEF 14A April 27, 2009 PROXY FOR SHAREHOLDERS MEETING 6-16-2009 View Document
8-K March 23, 2009 NGS OFFICER BONUS 3-23-2009 View Document
4 March 20, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 20, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 20, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 20, 2009 - View Document
4 March 20, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 20, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 19, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 19, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 19, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 March 19, 2009 MAIN DOCUMENT DESCRIPTION View Document
10-K March 9, 2009 FORM 10-K 4TH QUARTER/2008 YEAR-END EARNINGS View Document
8-K March 4, 2009 FORM 8-K 4TH QUARTER 2008 YEAR-END EARNINGS View Document
SC 13G/A Feb. 13, 2009 AMENDMENT NO. 3 View Document
SC 13G Feb. 5, 2009 - View Document
8-K Feb. 3, 2009 FORM 8-K TAYLOR 2-3-2009 View Document
4 Jan. 30, 2009 MAIN DOCUMENT DESCRIPTION View Document
4 Dec. 1, 2008 MAIN DOCUMENT DESCRIPTION View Document
10-Q Nov. 7, 2008 10-Q THIRD QUARTER 11-6-2008 View Document
8-K Nov. 5, 2008 EARNINGS RELEASE 3RD QUARTER 11-5-2008 View Document
8-K Oct. 30, 2008 FORM 8-K EMPLOYEE AGREEMENT ST 10-30-2008 View Document
CERTNYS Oct. 28, 2008 AUTO-GENERATED PAPER DOCUMENT View Document
25 Oct. 27, 2008 FORM 25 NOTIFICATION OF REMOVAL FROM LISTING 10-27-2008 View Document
8-A12B Oct. 27, 2008 FORM 8-A REGISTRATION OF SECURITIES ON NYSE 10-24-2008 View Document
S-8 Oct. 6, 2008 FORM S-8 REGISTRATION STATEMENT 10-2008 View Document
8-K Sept. 23, 2008 FORM 8-K View Document
4 Sept. 16, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Sept. 12, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Sept. 12, 2008 MAIN DOCUMENT DESCRIPTION View Document
10-Q Aug. 7, 2008 10-Q 2ND QUARTER 2008 View Document
8-K Aug. 7, 2008 8-K 2ND QUARTER 2008 View Document
4 June 16, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 11, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 11, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 11, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 11, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 10, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 9, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 5, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 June 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 May 13, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 May 13, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 May 12, 2008 MAIN DOCUMENT DESCRIPTION View Document
8-K May 6, 2008 EARNINGS RELEASE FOR 1ST QTR 2008 View Document
10-Q May 6, 2008 NATURAL GAS SERVICES GROUP, INC 1ST QTR FILING View Document
ARS April 29, 2008 AUTO-GENERATED PAPER DOCUMENT View Document
DEF 14A April 28, 2008 - View Document
8-K March 24, 2008 FORM 8-K View Document
4 March 17, 2008 MAIN DOCUMENT DESCRIPTION View Document
10-K March 7, 2008 NATURAL GAS SERVICES GROUP, INC. 10-K FOR 2007 View Document
4 Feb. 27, 2008 MAIN DOCUMENT DESCRIPTION View Document
8-K Feb. 21, 2008 NGSG EARNINGS RELEASE FOR 2007 View Document
SC 13G/A Feb. 14, 2008 AMENDMENT NO. 2 View Document
SC 13G/A Feb. 14, 2008 SEC FILING View Document
SC 13G/A Feb. 12, 2008 SCHEDULE 13G/A 02-12-08 View Document
SC 13G/A Feb. 12, 2008 SCHEDULE 13G/A 02-12-08 View Document
8-K Jan. 22, 2008 FORM 8-K View Document
4 Jan. 17, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
4 Jan. 3, 2008 MAIN DOCUMENT DESCRIPTION View Document
8-K Jan. 2, 2008 FORM 8-K View Document
8-K Dec. 12, 2007 FORM 8-K View Document
8-K Nov. 30, 2007 FORM 8-K View Document
4 Nov. 15, 2007 MAIN DOCUMENT DESCRIPTION View Document
S-8 Nov. 13, 2007 FORM S-8 View Document
SC 13G/A Nov. 13, 2007 SEC FILING View Document
8-K Nov. 8, 2007 FORM 8-K View Document
10-Q Nov. 6, 2007 NATURAL GAS SERVICES GROUP, INC. 3RD QUARTER 10Q View Document
8-K Nov. 6, 2007 NGSG EARNINGS RELEASE FOR THIRD QUARTER 2007 View Document
4 Sept. 17, 2007 MAIN DOCUMENT DESCRIPTION View Document
8-K Aug. 7, 2007 NGSG 8-K FOR 2Q-07 View Document
10-Q Aug. 7, 2007 10Q AS OF JUNE 30, 2007 FOR NGSG View Document
SC 13G July 10, 2007 - View Document
SC 13G/A July 9, 2007 AMENDMENT NO. 1 View Document
8-K June 25, 2007 FORM 8-K View Document
UPLOAD June 14, 2007 - View Document
4 June 8, 2007 MAIN DOCUMENT DESCRIPTION View Document
10-K/A June 8, 2007 NGSG 10K AMENDMENT 12/31/2006 View Document
10-Q/A May 31, 2007 AMENDMENT TO FORM 10-Q View Document
CORRESP May 31, 2007 - View Document
4 May 18, 2007 MAIN DOCUMENT DESCRIPTION View Document
UPLOAD May 16, 2007 - View Document
10-Q May 10, 2007 NATURAL GAS SERVICES GROUP, INC. 10-Q 03/31/2007 View Document
DEF 14A May 10, 2007 - View Document
8-K May 10, 2007 FORM 8-K View Document
CORRESP May 8, 2007 - View Document
CORRESP May 8, 2007 - View Document
UPLOAD April 24, 2007 - View Document
4 March 23, 2007 - View Document
4/A March 23, 2007 - View Document
4/A March 23, 2007 - View Document
4/A March 23, 2007 - View Document
4/A March 23, 2007 - View Document
4/A March 23, 2007 - View Document
10-K March 15, 2007 FORM 10-K View Document
8-K March 13, 2007 FORM 8-K View Document
8-K March 1, 2007 FORM 8-K View Document
SC 13G/A Feb. 14, 2007 SEC FILING View Document
SC 13G Feb. 13, 2007 SCHEDULE 13G View Document
SC 13G Feb. 8, 2007 - View Document
SC 13G Feb. 6, 2007 SCHEDULE 13G RE NATURAL GAS SERVS GRP INC 02-06-2007 View Document
SC 13G Feb. 6, 2007 SCHEDULE 13G RE NATURAL GAS SERVS GRP INC 02-06-2007 View Document
8-K/A Jan. 17, 2007 AMENDMENT TO FORM 8-K View Document
8-K Jan. 16, 2007 FORM 8-K View Document
4 Jan. 5, 2007 - View Document
4 Jan. 5, 2007 - View Document
4 Jan. 5, 2007 - View Document
4 Jan. 5, 2007 - View Document
4 Jan. 5, 2007 - View Document
4 Jan. 5, 2007 - View Document
3 Jan. 3, 2007 - View Document
8-K Dec. 22, 2006 FORM 8-K View Document
4 Dec. 4, 2006 - View Document
8-K Nov. 28, 2006 FORM 8-K View Document
4 Nov. 22, 2006 - View Document
4 Nov. 22, 2006 - View Document
4 Nov. 22, 2006 - View Document
10-Q Nov. 9, 2006 FORM 10-Q View Document
8-K Nov. 8, 2006 FORM 8-K View Document
8-K Nov. 3, 2006 FORM 8-K View Document
8-K Nov. 3, 2006 FORM 8-K View Document
8-K Nov. 1, 2006 FORM 8-K View Document
UPLOAD Oct. 11, 2006 - View Document
4 Sept. 19, 2006 - View Document
4 Sept. 19, 2006 - View Document
4 Sept. 19, 2006 - View Document
8-K Sept. 8, 2006 FORM 8-K View Document
UPLOAD Aug. 31, 2006 - View Document
10-Q Aug. 14, 2006 FORM 10-Q View Document
8-K Aug. 10, 2006 FORM 8-K View Document
SC 13G July 10, 2006 SEC FILING View Document
8-K June 27, 2006 FORM 8-K View Document
8-K June 26, 2006 FORM 8-K View Document
ARS May 22, 2006 AUTO-GENERATED PAPER DOCUMENT View Document
DEF 14A May 18, 2006 - View Document
8-K May 15, 2006 - View Document
10-Q May 12, 2006 FORM 10-Q View Document
8-K May 11, 2006 FORM 8-K View Document
8-K April 28, 2006 - View Document
8-K April 6, 2006 - View Document
10-K March 31, 2006 FORM 10-K View Document
4 March 30, 2006 - View Document