Guido J. Neels, Director at BIOPURE CORP (BPUR), bought 5,000 shares at $0.55 ($3K) on 2007-07-18, disclosed to the SEC on 2007-07-19.
Open-market purchase of $3k BPUR by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
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