Insider cluster buys
US-listed stocks with cluster-buy patterns: three or more distinct corporate insiders (officers, directors, 10%+ owners) purchasing shares in the same 30-day window. Cluster buying is among the strongest insider-trading signals in academic finance literature — significantly stronger than single-officer purchases. Most-recent clusters: TSM (30 insiders, $933K); CLBK (16 insiders, $4.8M); BRVE (7 insiders, $69.4M). Data parsed from SEC Form 4 filings via EDGAR. Public view delayed 4 hours. Live cluster-trigger alerts (the moment the third insider files) are Pro-only.
Public snapshot, delayed 4h. Live cluster-trigger alerts on the moment the third insider files — Pro-only.Open in the live terminal →
| # | Ticker | Insiders | Buys | Total value | Most recent |
|---|---|---|---|---|---|
| 1 | TSM | 30 | 36 | $933K | Aug 10, 2026 |
| 2 | CLBK | 16 | 16 | $4.8M | Jul 22, 2026 |
| 3 | BRVE | 7 | 7 | $69.4M | Aug 7, 2026 |
| 4 | SCTX | 6 | 6 | $71.3M | Jul 29, 2026 |
| 5 | EWAV | 6 | 6 | $10.9M | Aug 4, 2026 |
| 6 | FSBC | 6 | 6 | $6.3M | Jul 24, 2026 |
| 7 | JMKE | 6 | 6 | $1.0M | Aug 4, 2026 |
| 8 | BYRN | 6 | 8 | $428K | Aug 10, 2026 |
| 9 | GBFH | 5 | 5 | $1.7M | Aug 7, 2026 |
| 10 | RBKB | 4 | 5 | $716K | Aug 6, 2026 |
| 11 | ORN | 4 | 4 | $321K | Aug 4, 2026 |
| 12 | ATTO | 3 | 3 | $25.3M | Aug 7, 2026 |
| 13 | BSX | 3 | 4 | $9.4M | Aug 7, 2026 |
| 14 | ACI | 3 | 3 | $2.5M | Aug 3, 2026 |
| 15 | CCB | 3 | 3 | $1.1M | Aug 7, 2026 |
| 16 | TSCO | 3 | 3 | $652K | Aug 5, 2026 |
| 17 | GRML | 3 | 3 | $326K | Jul 23, 2026 |
| 18 | ASPS | 3 | 3 | $318K | Aug 4, 2026 |
| 19 | BBBY | 3 | 3 | $308K | Aug 7, 2026 |
| 20 | MKZR | 3 | 3 | $263K | Aug 4, 2026 |