| Abbreviation | Definition |
|---|---|
| UNSC | United Shields Corporation |
| UNSC | United Shields Corporation (de-listed) |
| UNSC | United Shields Corporation (de-listed) |
| UNSRA | Uniserve Corporation Class A |
| UNSRA | Uniserve Corporation Class A (de-listed) |
| UNSRA | Uniserve Corporation Class A (de-listed) |
| UNSRW | Uniserve Corporation Warrants |
| UNSRW | Uniserve Corporation Warrants (de-listed) |
| UNSRW | Uniserve Corporation Warrants (de-listed) |
| UNTD | First United Bancshares, Inc., of Arkansas |
| UNTD | First United Bancshares, Incorporated, of Arkansas (de-listed) |
| UNTD | First United Bancshares, Incorporated, of Arkansas (de-listed) |
| UNTT | United Textiles & Toys |
| UNTT | United Textiles & Toys (de-listed) |
| UNTT | United Textiles & Toys (de-listed) |
| UNTY | Unity Bancorp, Inc. |
| UNTY | Unity Bancorp, Incorporated |
| UNVCE | UNIVEC, Inc. |
| UNVCE | UNIVEC, Incorporated (de-listed) |
| UNVCE | UNIVEC, Incorporated (de-listed) |