| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13G/A | Report | Feb 13, 2024 | ||
| SC 13G/A | Report | Feb 14, 2023 | ||
| SC 13G/A | Report | AMENDMENT NO. 1 | Feb 13, 2023 | |
| SC 13G | Report | Jun 8, 2022 | ||
| SC 13G | Report | SC 13G | Feb 15, 2022 | |
| SC 13G/A | Report | AMENDMENT TO FORM SC 13G | Feb 9, 2021 | |
| SC 13G/A | Report | Jun 5, 2020 | ||
| SC 13G | Report | SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP | May 14, 2020 | |
| SC 13G | Report | SCHEDULE 13G | Jan 21, 2020 | |
| SC 13G/A | Report | AMENDMENT #3 | Feb 16, 2016 | |
| SC 13G/A | Report | SC 13G/A | Oct 7, 2015 | |
| SC 13G/A | Report | SC 13G/A | Oct 7, 2015 | |
| SC 13G/A | Report | SC 13G/A | Oct 7, 2015 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 13, 2015 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 13, 2015 | |
| SC 13G/A | Report | 13G AMENDMENT 2 | Feb 12, 2015 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 11, 2015 | |
| SC 13G | Report | SCHEDULE 13G | Nov 4, 2014 | |
| SC 13G | Report | 13G | Aug 26, 2014 | |
| SC 13G | Report | SCHEDULE 13G | Apr 25, 2014 | |
| SC 13G/A | Report | SC 13G/A | Sep 9, 2013 | |
| SC 13G | Report | SC 13G | Apr 27, 2012 | |
| SC 13G | Report | SC 13G | Apr 27, 2012 | |
| SC 13G | Report | SC 13G | Apr 27, 2012 | |
| SC 13G | Report | SC 13G | Mar 22, 2012 | |
| SC 13G/A | Report | AMENDMENT TO SCHEDULE 13G | Sep 19, 2011 | |
| SC 13G/A | Report | WELCH & FORBES LLC | Jul 7, 2011 | |
| SC 13G/A | Report | WELCH & FORBES LLC | Feb 28, 2011 | |
| SC 13G/A | Report | Feb 14, 2011 | ||
| SC 13G | Report | WELCH & FORBES LLC | Jan 11, 2011 | |
| SC 13G/A | Report | STIASSNI CAPITAL PARTNERS SC 13G A 12-31-2009 | Mar 1, 2010 | |
| SC 13G | Report | SC 13G | Jan 11, 2010 | |
| SC 13G | Report | ENERGY FOCUS, INC. | Jan 6, 2010 |