Boundless Bio, Inc (BOLD) insider trading
Every open-market stock purchase and sale by Boundless Bio, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Kevin Tang (Insider) bought $350K in the last 90 days.
- Kevin Tang (Insider) sold $54.4K in the last 90 days.
Last 12 months: insiders bought $1.9M (7 buys) and sold $134K (3 sales). Last close $2.44 on Oct 22, 2026.
Recent BOLD insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Oct 20, 2026 | Kevin Tang (Insider) | Bought | $521 |
| Oct 19, 2026 | Kevin Tang (Insider) | Bought | $42.6K |
| Oct 19, 2026 | Kevin Tang (Insider) | Bought | $29.9K |
| Oct 16, 2026 | Kevin Tang (Insider) | Bought | $277K |
| Aug 26, 2026 | Kevin Tang (Insider) | Sold | $54.4K |
| Jul 21, 2026 | Kevin Tang (Insider) | Bought | $7.3K |
| Jul 20, 2026 | Kevin Tang (Insider) | Bought | $4K |
| Jul 17, 2026 | Kevin Tang (Insider) | Bought | $647 |
| Jul 16, 2026 | Kevin Tang (Insider) | Bought | $45.1K |
| Jul 15, 2026 | Kevin Tang (Insider) | Bought | $3.9K |
| Jul 14, 2026 | Kevin Tang (Insider) | Bought | $107K |
| Jul 13, 2026 | Kevin Tang (Insider) | Bought | $117K |
| Jul 10, 2026 | Kevin Tang (Insider) | Bought | $105K |
| Jul 9, 2026 | Kevin Tang (Insider) | Bought | $17 |
| Jul 8, 2026 | Kevin Tang (Insider) | Bought | $35.3K |
| Jul 7, 2026 | Kevin Tang (Insider) | Bought | $39.2K |
| Jul 6, 2026 | Kevin Tang (Insider) | Bought | $67.4K |
| Jul 2, 2026 | Kevin Tang (Insider) | Bought | $24.5K |
| Jul 1, 2026 | Kevin Tang (Insider) | Bought | $178K |
| Jul 1, 2026 | ARCH Venture Fund IX L.P. (10% owner) | Sold | $39.8K |
| Jul 1, 2026 | Keith Crandell (10% owner) | Sold | $39.8K |
| Jul 1, 2026 | Keith Crandell (10% owner) | Bought (not open market) | $16.5K |
| Jul 1, 2026 | ARCH Venture Fund IX L.P. (10% owner) | Bought (not open market) | $16.5K |
| Jul 1, 2026 | ARCH Venture Fund IX L.P. (10% owner) | Bought (not open market) | — |
| Jul 1, 2026 | Keith Crandell (10% owner) | Bought (not open market) | — |
Who's trading BOLD
- Kevin Tang, Insider: bought $1.9M (26 buys), sold $54.4K (1 sale), last Oct 20, 2026
- Keith Crandell, Insider: sold $39.8K (1 sale), last Jul 1, 2026
- ARCH Venture Fund IX L.P., Insider: sold $39.8K (1 sale), last Jul 1, 2026
- Nancy Whiting, Insider: other filings, last Jun 15, 2026
- James Christensen, Insider: other filings, last Jun 15, 2026
- Jennifer Lew, Insider: other filings, last Jun 15, 2026
- Jonathan E Lim, Insider: other filings, last Jun 15, 2026
- David A Hinkle, Insider: other filings, last Jan 23, 2026
- Christian Hassig, C-suite exec: other filings, last Jan 23, 2026
- Zachary Hornby, CEO: other filings, last Jan 23, 2026
- Jessica Oien, Insider: other filings, last Jan 23, 2026
- Robert Doebele, C-suite exec: other filings, last Jan 23, 2026
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