First Guaranty Bancshares (FGBI) shares soared 19.7% in the last trading session to close at $6.44. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 22% gain over the past four weeks.First Guaranty Bancshares’ disclosure of substantial insider buying on Dec. 31, 2025, quickly drew investor attention and reshaped market sentiment. The purchases signaled strong insider conviction in the bank’s turnaround strategy, particularly notab ...