| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13D/A | 2018-12-20 | SRK Fund I, LP. | NOCOPI TECHNOLOGIES INC/MD/ | 1,244,500 | 2.1% | EDGAR |
| SC 13D | 2018-11-29 | SRK Fund I, LP. | NOCOPI TECHNOLOGIES INC/MD/ | 1,048,165 | 1.8% | EDGAR |
| SC 13D/A | 2008-08-11 | Hudson Philip Nordan | NOCOPI TECHNOLOGIES INC/MD/ | 3,777,777 | 7.0% | EDGAR |
| SC 13D | 2005-08-11 | ENTREVEST I ASSOCIATES | NOCOPI TECHNOLOGIES INC/MD/ | - | 5.0% | EDGAR |
| SC 13D | 2005-04-05 | NOCOPI TECHNOLOGIES INC/MD/ | NOCOPI TECHNOLOGIES INC/MD/ | - | - | EDGAR |
| SC 13D/A | 2004-01-20 | ENTREVEST I ASSOCIATES | NOCOPI TECHNOLOGIES INC/MD/ | - | 8.4% | EDGAR |
| SC 13D | 2003-01-10 | ENTREVEST I ASSOCIATES | NOCOPI TECHNOLOGIES INC/MD/ | - | 1.8% | EDGAR |
| SC 13D | 2001-03-14 | WESTVACO CORP | NOCOPI TECHNOLOGIES INC/MD/ | - | 10.4% | EDGAR |
| SC 13D | 2001-03-14 | WESTVACO BRAND SECURITY INC | NOCOPI TECHNOLOGIES INC/MD/ | - | 10.4% | EDGAR |