BOLD
Boundless Bio, Inc.
Boundless Bio, Inc. (BOLD) has 6 SEC Form 4 filings (20 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Jul 13, 2026.
The most active filer is 10% Owner TANG KEVIN with 12 filings. Insiders have net bought $1.3M over the trailing 6 months.
- Industry:Biotechnology
- CEO:Zachary Hornby
- Employees:64
- HQ:San Diego, CA, US
- IPO:2016-07-20
Insider Buying
$1.3M
reported purchases (SEC code P)
Insider Selling
$80K
reported sales (SEC code S)
Unique Insiders
3
in the rolling window
Market Cap
$55.3M
latest known value
| Source | ||||||
|---|---|---|---|---|---|---|
| 10% Owner | Purchase | 7 | $17 | Jul 13 | SEC ↗ | |
| 10% Owner | Purchase | 43,367 | $105K | Jul 13 | SEC ↗ | |
| 10% Owner | Purchase | 48,211 | $117K | Jul 13 | SEC ↗ | |
| 10% Owner | Purchase | 27,062 | $67K | Jul 9 | SEC ↗ | |
| 10% Owner | Purchase | 15,810 | $39K | Jul 9 | SEC ↗ | |
| 10% Owner | Purchase | 14,338 | $35K | Jul 9 | SEC ↗ | |
CRANDELL KEITHFirst filing | 10% Owner | Sale | 16,000 | $40K | Jul 6 | SEC ↗ |
ARCH Venture Fund IX, L.P.First filing | 10% Owner | Sale | 16,000 | $40K | Jul 6 | SEC ↗ |
| 10% Owner | Purchase | 26,030 | $66K | Jul 2 | SEC ↗ | |
| 10% Owner | Purchase | 71,612 | $178K | Jul 2 | SEC ↗ | |
| 10% Owner | Purchase | 9,821 | $24K | Jul 2 | SEC ↗ | |
| 10% Owner | Purchase | 146,390 | $363K | Jun 29 | SEC ↗ | |
| 10% Owner | Purchase | 75,181 | $192K | Jun 29 | SEC ↗ | |
| 10% Owner | Purchase | 64,762 | $160K | Jun 29 | SEC ↗ |
Related companies
Boundless Bio, Inc. is in the Healthcare sector.