Biggest Insider Buys: October 2025
The largest open-market insider purchases disclosed in SEC Form 4 filings, ranked by dollar value.
In October 2025, 104 open-market insider purchases of $50K or more were disclosed across 69 companies in SEC Form 4 filings, totaling $198.3M. The largest single purchase was $92.5M by Catalyst4, Inc. at MapLight Therapeutics, Inc. (MLPT).
← All monthly rankingsLargest purchases · October 2025
| Source | |||||||
|---|---|---|---|---|---|---|---|
| MLPT | 10% Owner | Purchase | 5,441,176 | $92.5M | Oct 29 | SEC ↗ | |
| KMI | Executive Chairman | Purchase | 1,000,000 | $26.0M | Oct 28 | SEC ↗ | |
| MPLT | 10% Owner | Purchase | 952,941 | $16.2M | Oct 30 | SEC ↗ | |
| VRDN | Director, 10% Owner | Purchase | 454,545 | $10.0M | Oct 27 | SEC ↗ | |
| VANI | Director, 10% Owner | Purchase | 3,703,703 | $6.0M | Oct 28 | SEC ↗ | |
| NMRA | 10% Owner | Purchase | 1,915,700 | $5.0M | Oct 29 | SEC ↗ | |
| EG | Director | Purchase | 11,385 | $3.5M | Oct 30 | SEC ↗ | |
| AMRZ | Chairman & CEO | Purchase | 55,000 | $2.9M | Oct 31 | SEC ↗ | |
| CLS | Director | Purchase | 6,000 | $2.1M | Oct 30 | SEC ↗ | |
| BAH | President and CEO | Purchase | 23,800 | $2.0M | Oct 30 | SEC ↗ | |
| BX | Director | Purchase | 13,170 | $2.0M | Oct 31 | SEC ↗ | |
| PAYIX | Chief Executive Officer | Purchase | 73,035.93 | $1.9M | Oct 28 | SEC ↗ | |
| PAYIX | Chief Executive Officer | Purchase | 55,226.83 | $1.4M | Oct 29 | SEC ↗ | |
| RYES | 10% Owner | Purchase | 5,600,000 | $1.4M | Oct 28 | SEC ↗ | |
| CGEM | 10% Owner | Purchase | 165,667 | $1.4M | Oct 30 | SEC ↗ | |
| RANI | Director, 10% Owner | Purchase | 2,083,334 | $1.3M | Oct 27 | SEC ↗ | |
| ASA | 10% Owner | Purchase | 28,500 | $1.3M | Oct 28 | SEC ↗ | |
| FCN | CEO, Chairman and President | Purchase | 7,500 | $1.1M | Oct 27 | SEC ↗ | |
| AVTR | Director | Purchase | 100,000 | $1.1M | Oct 31 | SEC ↗ | |
| ASA | 10% Owner | Purchase | 22,335 | $1.0M | Oct 27 | SEC ↗ | |
| FMNB | Director | Purchase | 73,500 | $999K | Oct 27 | SEC ↗ | |
| EG | Director | Purchase | 3,100 | $949K | Oct 30 | SEC ↗ | |
| ASA | 10% Owner | Purchase | 19,172 | $886K | Oct 27 | SEC ↗ | |
| EBC | Executive Chair | Purchase | 50,000 | $861K | Oct 28 | SEC ↗ | |
| SON | CFO | Purchase | 20,500 | $810K | Oct 30 | SEC ↗ |
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