2 institutions reported holding $8,123 of Plumas Bancorp (PLBC) in SEC 13F filings for 2026-06-30. Largest institutional holders: GAMMA Investing LLC ($7,480), MassMutual Private Wealth & Trust, FSB ($643). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GAMMA Investing LLC | $7,480 | 128 | Added |
| 2 | MassMutual Private Wealth & Trust, FSB | $643 | 11 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30