| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G | 2024-01-29 | BlackRock Inc. | MIDDLEFIELD BANC CORP | 484,202 | 6.0% | EDGAR |
| SC 13D | 2023-01-05 | Ancora Advisors, LLC | MIDDLEFIELD BANC CORP | 365,744 | 4.4% | EDGAR |
| SC 13D | 2022-12-09 | Castle Creek Capital Partners VI, LP | MIDDLEFIELD BANC CORP | 56 | 6.7% | EDGAR |
| SC 13D/A | 2022-04-18 | Ancora Advisors, LLC | MIDDLEFIELD BANC CORP | 459,694 | 7.8% | EDGAR |
| SC 13D | 2021-11-10 | Ancora Advisors, LLC | MIDDLEFIELD BANC CORP | 464,479 | 7.6% | EDGAR |
| SC 13D | 2021-11-01 | Ancora Advisors, LLC | MIDDLEFIELD BANC CORP | 418,374 | 6.8% | EDGAR |
| SC 13D | 2019-08-08 | Ancora Advisors, LLC | MIDDLEFIELD BANC CORP | 179,604 | 5.5% | EDGAR |
| SC 13D | 2012-05-10 | HOVDE ERIC D | MIDDLEFIELD BANC CORP | 196,635 | 10.0% | EDGAR |