Boundless Bio, Inc. (BOLD) has 9 SEC Form 4 insider filings on record in the last 90 days. That includes 6 insider purchases totalling $1.5M, and 1 sales totalling $54K. Most recent filing: Aug. 28, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Aug. 28, 2026 filed Aug. 26, 2026 | TANG KEVIN 10% Owner | −$54,351 | 18,300 | −1% | No | |
|
|
||||||
| July 21, 2026 filed July 17, 2026 | TANG KEVIN 10% Owner | +$11,866 | 4,863 | +0% | No | |
|
|
||||||
| July 16, 2026 filed July 14, 2026 | TANG KEVIN 10% Owner | +$155,646 | 63,969 | +2% | No | |
|
|
||||||
| July 13, 2026 filed July 9, 2026 | TANG KEVIN 10% Owner | +$222,070 | 91,585 | +3% | No | |
|
|
||||||
| July 8, 2026 filed July 6, 2026 | TANG KEVIN 10% Owner | +$141,865 | 57,210 | +2% | No | |
|
|
||||||
Showing the 5 most recent of 9 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
Start free