Smart money / SEC Form 4
Insider Activity
As of Aug 27
Receipt-linked open-market buys and sells, with planned sales separated only when the filing supports it. How we read filings
As of Aug 27 2026, 8:25 AM EDT
Net flow · 30 days
- Buys
- $25.9M
- Sells
- $614.2M
- Net
- -$588.3M
- Filed rows
- 429
- Disclosed value
- $640M
- Companies
- 22
- Insiders
- 51
- Clusters
- 8
- Top signal
- 82
Snapshot/Last attempt: Aug 27 2026, 8:25 AM EDT; backfill in progress. Reason: Processed 25 of 129 symbols; 428 receipt-qualified rows currently cover this window.
One transaction can be noise. Repeated open-market action by distinct insiders is the stronger exhibit, so clusters are separated from the complete filing ledger rather than promoted as cards.
Filed ledger
Combined ledger · 30d
Sort and filter the receipt-qualified record; no transaction is published without an exact SEC accession link.
| Filed | Side | Ticker | Insider | Shares | Price | Value ▲ | Δ Holdings | Score | Signal | Filing |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 5 | Sell 10b5-1 planned | ◆ AMZN Amazon | BEZOS JEFFREY P Director · Executive Chair | 1,209,649 | $286.41 | $346,453,514 | -0.1% | 64BUY BIAS | 69 · ElevatedNotability factors role 62 · holdings delta 38 · size 100 · cluster 100 · score divergence 76 · plan status 24 Weights: role 15%, holdings delta 22%, value 22%, cluster 16%, score divergence 15%, 10b5-1 status 10%. 10b5-1: planned. | Form 4 ↗ 0001018724-26-000028 |
| Aug 4 | Sell | BRK.B Berkshire Hathaway | BERKSHIRE HATHAWAY INC 10% Owner | 182,980 | $199.55 | $36,513,293 | -0.6% | 62BUY BIAS | 60 · WatchNotability factors role 52 · holdings delta 38 · size 100 · cluster 34 · score divergence 76 · plan status 54 Weights: role 15%, holdings delta 22%, value 22%, cluster 16%, score divergence 15%, 10b5-1 status 10%. 10b5-1: plan unknown. | Form 4 ↗ 0001193125-26-333151 |
| Aug 20 | Sell | ◆ MU Micron Technology | Sadana Sumit EVP and Chief Business Officer | 15,000 | $934.29 | $14,014,350 | -7.3% | 73BUY BIAS | 75 · ElevatedNotability factors role 78 · holdings delta 55 · size 100 · cluster 76 · score divergence 76 · plan status 54 Weights: role 15%, holdings delta 22%, value 22%, cluster 16%, score divergence 15%, 10b5-1 status 10%. 10b5-1: plan unknown. | Form 4 ↗ 0001311079-26-000003 |
Coverage note ↗ 3 receipt-linked open-market filings are shown. No same-direction cluster reached two distinct insiders in this window. 10b5-1 status could not be resolved from filing language for 2 sales and is omitted. Rows without an exact SEC accession receipt are excluded.
Methodology
Different rules for buys and sells
Buys use Insider Conviction: role 20%, holdings delta 20%, disclosed value 20%, cluster 15%, Veridion Score agreement 15%, rarity 10%. Sells use neutral Notability: role 15%, holdings delta 22%, value 22%, cluster 16%, score divergence 15%, 10b5-1 status 10%. Missing factors are omitted and remaining weights are normalized.
SEC EDGAR Form 4, transaction codes P and S. Loaded universe 129; receipt drops 0. Identification, not recommendation.