Just saw that Kirby's CEO dumped $4.4 million worth of shares back in late February. He sold 34,152 shares, which was about a quarter of his direct holdings. Not necessarily a red flag though - executives do this all the time for liquidity, and he still held nearly 100k shares after the sale.

What caught my attention is the timing. This happened right after Kirby crushed Q4 earnings with $1.68 EPS versus the expected $1.62. The stock was already having a solid run - up 10.5% just in February alone and about 27% over the prior year. So the CEO wasn't bailing out of a sinking ship or anything.

Kirby operates tank barges and marine transportation, which sounds boring but apparently it's essential infrastructure for energy and industrial companies. They're the largest operator in the US for this stuff, moving petrochemicals and refined products mostly through inland waterways. Revenue running around $3.36 billion annually with decent profitability.

The interesting part is whether this insider sale signals the CEO thinks the stock's run is done or if he just needed cash. Hard to say. Company's shown five straight years of annual growth, so there's a pattern there. Either way, it's the kind of business that doesn't get a lot of retail attention but keeps the wheels turning for bigger industries. Worth keeping on the radar if you're into that kind of play.