| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| 8-K | Report | EATON VANCE NATIONAL MUNICIPAL OPPORTUNITIES TRUST | Oct 18, 2023 | Oct 18, 2023 |
| 8-K | Report | EATON VANCE NATIONAL MUNICIPAL OPPORTUNITIES TRUST | Feb 1, 2023 | Feb 1, 2023 |
| 8-K | Report | EATON VANCE NATIONAL MUNICIPAL OPPORTUNITIES TRUST | Aug 13, 2020 | Aug 13, 2020 |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Jan 8, 2015 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Aug 8, 2014 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Feb 7, 2014 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Sep 10, 2013 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Feb 7, 2013 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Dec 10, 2012 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Aug 10, 2012 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Feb 10, 2012 | |
| SC 13G/A | Report | AMENDED SCHEDULE 13G | Jan 13, 2012 | |
| SC 13G | Report | SCHEDULE 13G | Jan 27, 2011 |