| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 13F-HR | Open Document | Open Filing | 14 Nov 2025 | 30 Sep 2025 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2025 | 30 Jun 2025 | 028-04639 | |
| N-PX | Open Document | Open Filing | 05 Aug 2025 | 30 Jun 2025 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 May 2025 | 31 Mar 2025 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2025 | 31 Dec 2024 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Nov 2024 | 30 Sep 2024 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2024 | 30 Jun 2024 | 028-04639 | |
| N-PX | Open Document | Open Filing | 09 Aug 2024 | 30 Jun 2024 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 May 2024 | 31 Mar 2024 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2024 | 31 Dec 2023 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Nov 2023 | 30 Sep 2023 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2023 | 30 Jun 2023 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 May 2023 | 31 Mar 2023 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2023 | 31 Dec 2022 | 028-04639 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 25 Jan 2023 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 25 Jan 2023 | ||
| SC 13G | Open Document | Open Filing | SC 13G | 25 Jan 2023 | ||
| 13F-HR | Open Document | Open Filing | 14 Nov 2022 | 30 Sep 2022 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 Aug 2022 | 30 Jun 2022 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 16 May 2022 | 31 Mar 2022 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2022 | 31 Dec 2021 | 028-04639 | |
| SC 13G | Open Document | Open Filing | SC 13G | 08 Feb 2022 | ||
| SC 13G | Open Document | Open Filing | SC 13G | 08 Feb 2022 | ||
| SC 13G | Open Document | Open Filing | SC 13G | 08 Feb 2022 | ||
| 4 | Open Document | Open Filing | 15 Nov 2021 | 11 Nov 2021 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 15 Nov 2021 | 30 Sep 2021 | 028-04639 | |
| 3 | Open Document | Open Filing | 05 Oct 2021 | 04 Oct 2021 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 16 Aug 2021 | 30 Jun 2021 | 028-04639 | |
| 4 | Open Document | Open Filing | 11 Jun 2021 | 11 Jun 2021 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 17 May 2021 | 31 Mar 2021 | 028-04639 | |
| 4 | Open Document | Open Filing | 15 Mar 2021 | 12 Mar 2021 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 16 Feb 2021 | 31 Dec 2020 | 028-04639 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 12 Feb 2021 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 12 Feb 2021 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 12 Feb 2021 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 12 Feb 2021 | ||
| 4 | Open Document | Open Filing | 04 Jan 2021 | 31 Dec 2020 | 001-36030 | |
| 4 | Open Document | Open Filing | 14 Dec 2020 | 14 Dec 2020 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 13 Nov 2020 | 30 Sep 2020 | 028-04639 | |
| 4 | Open Document | Open Filing | 17 Sep 2020 | 15 Sep 2020 | 001-36030 | |
| 4 | Open Document | Open Filing | 20 Aug 2020 | 18 Aug 2020 | 001-34198 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2020 | 30 Jun 2020 | 028-04639 | |
| 4 | Open Document | Open Filing | 07 Aug 2020 | 05 Aug 2020 | 001-34198 | |
| 13F-HR | Open Document | Open Filing | 15 May 2020 | 31 Mar 2020 | 028-04639 | |
| 4 | Open Document | Open Filing | 04 May 2020 | 29 Apr 2020 | 001-36030 | |
| 4 | Open Document | Open Filing | 28 Feb 2020 | 25 Feb 2020 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2020 | 31 Dec 2019 | 028-04639 | |
| 4/A | Open Document | Open Filing | FORM 4/A | 07 Feb 2020 | 19 Dec 2019 | 001-36030 |
| SC 13G | Open Document | Open Filing | SC 13G | 07 Feb 2020 | ||
| SC 13G | Open Document | Open Filing | SC 13G | 07 Feb 2020 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 07 Feb 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 07 Feb 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 31 Dec 2019 | ||
| 4 | Open Document | Open Filing | 20 Dec 2019 | 19 Dec 2019 | 001-36030 | |
| 4 | Open Document | Open Filing | 20 Dec 2019 | 19 Dec 2019 | 001-34198 | |
| 13F-HR | Open Document | Open Filing | 14 Nov 2019 | 30 Sep 2019 | 028-04639 | |
| 4 | Open Document | Open Filing | 12 Nov 2019 | 08 Nov 2019 | 001-34198 | |
| 4 | Open Document | Open Filing | 06 Nov 2019 | 05 Nov 2019 | 001-34198 | |
| 4 | Open Document | Open Filing | 29 Oct 2019 | 28 Oct 2019 | 001-34198 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 28 Oct 2019 | ||
| 4 | Open Document | Open Filing | 28 Oct 2019 | 24 Oct 2019 | 001-34198 | |
| 4 | Open Document | Open Filing | 25 Oct 2019 | 24 Oct 2019 | 001-34198 | |
| 4 | Open Document | Open Filing | 24 Oct 2019 | 22 Oct 2019 | 001-34198 | |
| 3 | Open Document | Open Filing | 23 Oct 2019 | 21 Oct 2019 | 001-34198 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 12 Sep 2019 | ||
| 4 | Open Document | Open Filing | 09 Sep 2019 | 05 Sep 2019 | 001-36030 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 19 Aug 2019 | ||
| 13F-HR/A | Open Document | Open Filing | 15 Aug 2019 | 30 Jun 2019 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 13 Aug 2019 | 30 Jun 2019 | 028-04639 | |
| 4 | Open Document | Open Filing | 09 Aug 2019 | 06 Aug 2019 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 15 May 2019 | 31 Mar 2019 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2019 | 31 Dec 2018 | 028-04639 | |
| SC 13G | Open Document | Open Filing | SC 13G | 12 Feb 2019 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 12 Feb 2019 | ||
| 13F-HR | Open Document | Open Filing | 14 Nov 2018 | 30 Sep 2018 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2018 | 30 Jun 2018 | 028-04639 | |
| 4 | Open Document | Open Filing | 13 Aug 2018 | 06 Aug 2018 | 001-36030 | |
| 13F-HR | Open Document | Open Filing | 15 May 2018 | 31 Mar 2018 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2018 | 31 Dec 2017 | 028-04639 | |
| SC 13D | Open Document | Open Filing | SC 13D | 07 Feb 2018 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Feb 2018 | 05 Feb 2018 | 001-36030 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 26 Jan 2018 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 26 Jan 2018 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | 26 Jan 2018 | ||
| 13F-HR | Open Document | Open Filing | 14 Nov 2017 | 30 Sep 2017 | 028-04639 | |
| 13F-HR/A | Open Document | Open Filing | 21 Sep 2017 | 30 Jun 2017 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2017 | 30 Jun 2017 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 May 2017 | 31 Mar 2017 | 028-04639 | |
| SC 13G | Open Document | Open Filing | SCHEDULE 13G | 08 May 2017 | ||
| SC 13G | Open Document | Open Filing | SC 13G | 05 May 2017 | ||
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 May 2017 | 28 Apr 2017 | 001-36030 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 May 2017 | 28 Apr 2017 | 001-36030 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Apr 2017 | 25 Apr 2017 | 001-36030 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Apr 2017 | 25 Apr 2017 | 001-36030 |
| 13F-HR | Open Document | Open Filing | 14 Feb 2017 | 31 Dec 2016 | 028-04639 | |
| SC 13G/A | Open Document | Open Filing | APPLIED OPTOELECTRONICS, INC. | 14 Feb 2017 | ||
| SC 13G/A | Open Document | Open Filing | BIOSCRIP, INC. | 14 Feb 2017 | ||
| 13F-HR | Open Document | Open Filing | 14 Nov 2016 | 30 Sep 2016 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 Aug 2016 | 30 Jun 2016 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 16 May 2016 | 31 Mar 2016 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 16 Feb 2016 | 31 Dec 2015 | 028-04639 | |
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 16 Feb 2016 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 16 Feb 2016 | ||
| SC 13G/A | Open Document | Open Filing | APPLIED OPTOELECTRONICS INC | 16 Feb 2016 | ||
| SC 13G/A | Open Document | Open Filing | BLUEROCK RESIDENTIAL GROWTH REIT, INC. | 16 Feb 2016 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 16 Feb 2016 | ||
| SC 13G/A | Open Document | Open Filing | HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC. | 16 Feb 2016 | ||
| 13F-HR | Open Document | Open Filing | 16 Nov 2015 | 30 Sep 2015 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2015 | 30 Jun 2015 | 028-04639 | |
| 13F-HR | Open Document | Open Filing | 15 May 2015 | 31 Mar 2015 | 028-04639 | |
| SC 13G | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 16 Apr 2015 | ||
| SC 13G | Open Document | Open Filing | APPLIED OPTOELECTRONICS, INC. | 20 Feb 2015 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 17 Feb 2015 | ||
| 13F-HR | Open Document | Open Filing | 17 Feb 2015 | 31 Dec 2014 | 028-04639 | |
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 17 Feb 2015 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 17 Feb 2015 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 17 Feb 2015 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 17 Feb 2015 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 17 Feb 2015 | ||
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 12 Feb 2015 | 11 Feb 2015 | 001-34372 |
| SC 13G | Open Document | Open Filing | BIOSCRIP, INC. | 09 Feb 2015 | ||
| SC 13G | Open Document | Open Filing | INDEPENDENCE REALTY TRUST, INC. | 10 Dec 2014 | ||
| 13F-HR | Open Document | Open Filing | 13 Nov 2014 | 30 Sep 2014 | 028-04639 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Sep 2014 | 24 Sep 2014 | 001-34372 |
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 05 Sep 2014 | 03 Sep 2014 | 001-34372 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Aug 2014 | 26 Aug 2014 | 001-34372 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Aug 2014 | 21 Aug 2014 | 001-34372 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Aug 2014 | 18 Aug 2014 | 001-34372 |
| 13F-HR | Open Document | Open Filing | 14 Aug 2014 | 30 Jun 2014 | 028-04639 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Jul 2014 | 14 Jul 2014 | 001-34372 |
| 4 | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 19 May 2014 | 15 May 2014 | 001-34372 |
| 13F-HR | Open Document | Open Filing | 15 May 2014 | 31 Mar 2014 | 028-04639 | |
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 13 May 2014 | 09 May 2014 | 001-34372 |
| 4 | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 25 Apr 2014 | 23 Apr 2014 | 001-34372 |
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 16 Apr 2014 | 14 Apr 2014 | 001-34372 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 1 TO THE SCHEDULE 13D | 13 Mar 2014 | ||
| SC 13G/A | Open Document | Open Filing | ACTIVE POWER, INC. | 14 Feb 2014 | ||
| SC 13G/A | Open Document | Open Filing | ENTEROMEDICS INC. | 14 Feb 2014 | ||
| SC 13G/A | Open Document | Open Filing | HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC. | 14 Feb 2014 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 14 Feb 2014 | ||
| SC 13G/A | Open Document | Open Filing | HI-CRUSH PARTNERS LP | 14 Feb 2014 | ||
| SC 13G/A | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 14 Feb 2014 | ||
| SC 13G/A | Open Document | Open Filing | YUHE INTERNATIONAL, INC. | 14 Feb 2014 | ||
| 13F-HR | Open Document | Open Filing | 12 Feb 2014 | 31 Dec 2013 | 028-04639 | |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 10 Jan 2014 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jan 2014 | 03 Jan 2014 | 001-34372 |
| 4 | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 02 Jan 2014 | 31 Dec 2013 | 001-34372 |
| SC 13G | Open Document | Open Filing | ARDSLEY ADVISORY PARNTERS | 12 Dec 2013 | ||
| 13F-HR/A | Open Document | Open Filing | 27 Nov 2013 | 30 Sep 2013 | 028-04639 | |
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 25 Nov 2013 | 22 Nov 2013 | 001-34372 |
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 18 Nov 2013 | 14 Nov 2013 | 001-34372 |
| 13F-HR | Open Document | Open Filing | 08 Nov 2013 | 30 Sep 2013 | 028-04639 | |
| 4 | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 04 Nov 2013 | 01 Nov 2013 | 001-34372 |
| 4 | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 30 Oct 2013 | 28 Oct 2013 | 001-34372 |
| SC 13G | Open Document | Open Filing | CANADIAN SOLAR INC. | 19 Aug 2013 | ||
| 13F-HR | Open Document | Open Filing | 14 Aug 2013 | 30 Jun 2013 | 028-04639 | |
| SC 13G | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 28 May 2013 | ||
| 13F-HR | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 14 May 2013 | 31 Mar 2013 | 028-04639 |
| 4 | Open Document | Open Filing | SABA SOFTWARE, INC. | 11 Apr 2013 | 09 Apr 2013 | 001-34372 |
| 3 | Open Document | Open Filing | SABA SOFTWARE, INC. | 10 Apr 2013 | 08 Apr 2013 | 001-34372 |
| SC 13G/A | Open Document | Open Filing | SABA SOFTWARE, INC. | 10 Apr 2013 | ||
| SC 13G/A | Open Document | Open Filing | ZBB ENERGY CORPORATION | 13 Feb 2013 | ||
| SC 13G/A | Open Document | Open Filing | AMARIN CORPORATION PLC | 13 Feb 2013 | ||
| SC 13G/A | Open Document | Open Filing | SABA SOFTWARE, INC. | 13 Feb 2013 | ||
| SC 13G/A | Open Document | Open Filing | ACTIVE POWER, INC. | 13 Feb 2013 | ||
| SC 13G/A | Open Document | Open Filing | HI-CRUSH PARTNERS LP | 13 Feb 2013 | ||
| SC 13G/A | Open Document | Open Filing | ENTEROMEDICS INC. | 13 Feb 2013 | ||
| SC 13G/A | Open Document | Open Filing | WORLD ENERGY SOLUTIONS, INC. | 13 Feb 2013 | ||
| 13F-HR | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 13 Feb 2013 | 31 Dec 2012 | 028-04639 |
| SC 13D/A | Open Document | Open Filing | COMVERGE, INC. | 06 Feb 2013 | ||
| SC 13G | Open Document | Open Filing | HI-CRUSH PARTNERS LP | 27 Dec 2012 | ||
| SC 13G | Open Document | Open Filing | SABA SOFTWARE, INC. | 14 Dec 2012 | ||
| 13F-HR | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 14 Nov 2012 | 30 Sep 2012 | 028-04639 |
| 13F-HR | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 13 Aug 2012 | 30 Jun 2012 | 028-04639 |
| 13F-HR | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 14 May 2012 | 31 Mar 2012 | 028-04639 |
| SC 13G | Open Document | Open Filing | ACTIVE POWER, INC. | 16 Mar 2012 | ||
| SC 13D/A | Open Document | Open Filing | COMVERGE INC. | 01 Mar 2012 | ||
| SC 13G/A | Open Document | Open Filing | ZBB ENERGY CORPORATION | 14 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | WORLD ENERGY SOLUTIONS, INC. | 14 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | ENTEROMEDICS INC. | 14 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | AMARIN CORPORATION PLC | 14 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | QKL STORES INC. | 14 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | WONDER AUTO TECHNOLOGY, INC. | 14 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | YUHE INTERNATIONAL, INC. | 10 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | CHINA YIDA HOLDING, CO. | 10 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | ECOTALITY, INC. | 10 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | CHINA VALVES TECHNOLOGY, INC. | 10 Feb 2012 | ||
| SC 13G/A | Open Document | Open Filing | YONGYE INTERNATIONAL, INC. | 10 Feb 2012 | ||
| 13F-HR | Open Document | Open Filing | ARDSLEY ADVISORY PARTNERS | 09 Feb 2012 | 31 Dec 2011 | 028-04639 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Jan 2012 | 30 Dec 2011 | 001-33399 |
| 3 | Open Document | Open Filing | FORM 3 | 10 Jan 2012 | 30 Dec 2011 | 001-33399 |
| SC 13D/A | Open Document | Open Filing | COMVERGE, INC. | 06 Jan 2012 |