Timothy J. Tumminello, Controller & CAO at Celsion CORP (CLSN), bought 1,727 shares at $2.77 ($5K) on 2011-05-26, disclosed to the SEC on 2011-05-31.
Open-market purchase of $5k CLSN by Controller & CAO. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.