Lawrence E. Harris, Director at Interactive Brokers Group, Inc. (IBKR), bought 5,000 shares at $14.98 ($75K) on 2011-08-01, disclosed to the SEC on 2011-08-03.
Open-market purchase of $75k IBKR 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.
| Filing → |
| IBKR | SELL | 2025-10-29 | $2.0M | — | Filing → |
| IBKR | SELL | 2025-10-27 | $2.0M | — | Filing → |
| IBKR | BUY | 2011-07-27 | $151K | — | Filing → |