Five Star Bancorp (FSBC) is showing up on insider-buying radars this week after a fresh Form 4 filing revealed a director and 10%+ owner putting more of his own money into the bank holding company’s stock.
According to the filing, Larry Eugene Allbaugh purchased 5,682 shares on the open market on July 22, 2026, at a price of $44.00 per share, for a total transaction value of $250,008.00. The shares were acquired indirectly, meaning they are held through a trust or affiliated entity rather than in Allbaugh’s own name. Following the purchase, his total indirect stake stands at 507,401 shares.
Not a One-Off: A $4.25 Million Buying Pattern
What makes this filing more notable than a single transaction is the pattern around it. Records show two separate open-market purchases at Five Star Bancorp between July 22, 2026 and July 22, 2026, together totaling $4,250,004. That’s a substantial amount of insider capital deployed in a very tight window, and it’s why this filing is being flagged under our ‘cluster buy’ classification rather than treated as an isolated trade.
Cluster buying — when multiple insiders, or the same insider across related entities, purchase shares around the same time — tends to draw more attention from people who track filings closely than a lone purchase does. The reasoning is straightforward: one insider buying could reflect a personal financial decision, but coordinated or concentrated buying across a short period suggests a broader signal about how those closest to the company view its current valuation.
It’s worth noting that academic research on insider trading patterns has found that clustered buying activity is statistically associated with above-average stock performance in the periods that follow, on average, across large samples of companies. That is a historical observation about markets broadly, not a statement about what will happen with Five Star Bancorp specifically, and it should not be read as a signal to take any action.
Five Star Bancorp is a California-based bank holding company, and filings like this one become part of the public record precisely so that shareholders and prospective investors can see when the people running or overseeing a company are putting their own capital on the line. This particular filing, paired with the broader $4.25 million buying pattern around the same date, is one more data point for anyone building a picture of how insiders at FSBC are currently positioned.
Source: original SEC Form 4 filing.