| Date Filed | Type | Description |
| 02/12/2020 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/13/2019 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 11.7% stake in Carbon Natural Gas Company |
| 02/13/2019 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/13/2018 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals: |
| 02/13/2018 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 11.7% stake in Carbon Natural Gas Company |
| 02/13/2018 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 7.6% stake in Broadwind Energy, Inc. |
| 02/10/2017 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals: |
| 02/10/2017 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals |
| 02/10/2017 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals |
| 02/10/2017 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals |
| 02/10/2017 |
SC 13G
| Enservco Corp reports a 7.6% stake in Enservco Corporation |
| 02/10/2017 |
SC 13G/A
| Carbon Natural Gas Co reports a 12.8% stake in Carbon Natural Gas Company |
| 02/10/2017 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals [Amend] |
| 11/07/2013 |
SC 13G
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 17.3% stake in Adept Technology, Inc. |
| 11/07/2013 |
SC 13G
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 10.8% stake in Vapor Corporation |
| 11/07/2013 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 6.8% stake in Iteris, Inc. |
| 10/24/2013 |
SC 13G
| PFSWEB INC reports a 14.7% stake in PFSweb, Inc. |
| 09/10/2013 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 4.7% stake in Powersecure International, Inc. |
| 09/10/2013 |
SC 13G
| BROADWIND ENERGY, INC. reports a 19.1% stake in Broadwind Energy, Inc. |
| 08/09/2013 |
SC 13D/A
| Graymark Healthcare, Inc. reports a 4.7% stake in Graymark Healthcare, Inc. |
| 08/09/2013 |
SC 13G/A
| REMEDENT, INC. reports a 0% stake in Remedent, Inc. |
| 05/09/2013 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 0% stake in Alco Stores, Inc. |
| 03/07/2013 |
SC 13G/A
| Support.com, Inc. reports a 4.9% stake in Support.com, Inc. |
| 03/07/2013 |
SC 13D/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 42.2% stake in Precision Optics Corp. |
| 03/07/2013 |
SC 13D/A
| Avantair, Inc reports a 30.8% stake in Avantair, Inc. |
| 03/07/2013 |
SC 13G
| PLUG POWER INC reports a 5% stake in PlugPower, Inc. |
| 02/11/2013 |
SC 13G/A
| EnteroMedics Inc reports a 6.1% stake in EnteroMedics,Inc. |
| 02/11/2013 |
SC 13G/A
| EnteroMedics Inc reports a 4.2% stake in EnteroMedics,Inc. |
| 02/11/2013 |
SC 13G/A
| EnteroMedics Inc reports a 6.1% stake in EnteroMedics,Inc. |
| 01/14/2013 |
SC 13D/A
| PFSWEB INC reports a 19.1% stake in PFSweb, Inc. |
| 11/28/2012 |
SC 13D/A
| PFSWEB INC reports a 19.1% stake in PFSweb, Inc. |
| 11/28/2012 |
SC 13D
| PFSWEB INC reports a 19.1% stake in PFSweb, Inc. |
| 11/09/2012 |
SC 13G/A
| MARXE AUSTIN W & GREENHOUSE DAVID M reports a 0% stake in FSI International, Inc. |
| 11/09/2012 |
SC 13G/A
| 57th Street General Acquisition Corp reports a 18.5% stake in Crumbs Bake Shop, Inc. |
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