Insider Trading Daily Recap - September 21, 2026
September 21, 2026: 78 insider buys ($678.05M) and 126 sells ($214.70M). 66 dip buys detected.
In This Article
Here's your daily summary of insider trading activity from SEC Form 4 filings filed on September 21, 2026.
Largest Insider Purchases
The biggest open market purchases by corporate insiders today:
Insiders Buying the Dip
These insiders purchased shares while their stock was trading 15%+ below its 52-week high - a potentially bullish signal:
| Stock | Insider | Value | % Below 52W High |
|---|---|---|---|
| BRK-B | BERKSHIRE HATHAWAY INC | $93.08M | 85.6% |
| LEN | BERKSHIRE HATHAWAY INC | $93.08M | 42.6% |
| BRK-A | BERKSHIRE HATHAWAY INC | $93.08M | 100.0% |
| LEN | BERKSHIRE HATHAWAY INC | $37.72M | 41.4% |
| BRK-B | BERKSHIRE HATHAWAY INC | $37.72M | 85.3% |
| BRK-A | BERKSHIRE HATHAWAY INC | $37.72M | 100.0% |
| BRK-A | BERKSHIRE HATHAWAY INC | $32.57M | 100.0% |
| LEN | BERKSHIRE HATHAWAY INC | $32.57M | 40.4% |
| BRK-B | BERKSHIRE HATHAWAY INC | $32.57M | 85.0% |
| GRAB | Tan Anthony Ping Yeow | $29.88M | 55.2% |
Bullish Reversals
These insiders were net sellers over the past 30 days but have now started buying - a potential signal of changing sentiment:
- GF - Saba Capital Management, L.P. purchased $153.5K worth of shares
- GF - Saba Capital Management, L.P. purchased $14.0K worth of shares
Notable Insider Sales
The largest insider sales filed today. Note: Insider selling can occur for many reasons unrelated to company outlook (diversification, estate planning, tax obligations, etc.):
| Stock | Insider | Shares | Value |
|---|---|---|---|
| SION | RA CAPITAL MANAGEMENT, L.P. | 3,415,011 | $21.58M |
| SNDK | Goeckeler David | 9,604 | $15.07M |
| ANET | BECHTOLSHEIM ANDREAS | 58,043 | $11.63M |
| WDAY | DUFFIELD DAVID A | 47,201 | $9.20M |
| ANET | BECHTOLSHEIM ANDREAS | 38,920 | $7.77M |
How to Interpret Insider Trading Data
Insider trading data from SEC Form 4 filings can provide valuable signals, but requires context:
- Open market purchases are most significant: When insiders voluntarily buy shares with their own money, it often signals confidence.
- Buying the Dip matters: Insiders purchasing when their stock is down significantly may have insight into the company's prospects.
- Selling is less informative: Insiders sell for many personal reasons unrelated to company outlook.
- Cluster buying is powerful: Multiple insiders buying around the same time is a stronger signal than individual trades.
- Consider position size: Large purchases relative to an insider's holdings show higher conviction.
Track all insider trades in real-time on our Insider Trades page.
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