Robert B. Mayer, Director at BLONDER TONGUE LABORATORIES INC (BDR), bought 10,000 shares at $1.00 ($10K) on 2007-11-21, disclosed to the SEC on 2007-11-26.
Open-market purchase of $10k BDR by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Something here stands out, but not much.