Form 4: Boundless Bio Insider Buys Shares
Insider Transaction (Form 4)
Kevin Tang and 1 other reported changes in beneficial ownership of Boundless Bio, Inc. common stock on July 17, 2026.
Summary
- Open-market purchase: acquired 265 Common Stock at $2.44 ($647) on July 17, 2026; holds 2,854,337 after (Indirect).
- Open-market purchase: acquired 1,623 Common Stock at $2.44 ($3,960) on July 20, 2026; holds 2,855,960 after (Indirect).
- Open-market purchase: acquired 2,975 Common Stock at $2.44 ($7,259) on July 21, 2026; holds 2,858,935 after (Indirect).
Sentiment
Score: 7
Explanation: StockSavvy.ai views this as a bullish signal: an insider made an open-market purchase of $11,866, committing personal capital to the stock.
Insider Transactions
Kevin Tang — 10% owner
Tang Capital Management Llc — 10% owner
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-07-17 | Open-market purchase | Common Stock | 265 | $2 | $647 | 2,854,337 |
| 2026-07-20 | Open-market purchase | Common Stock | 1,623 | $2 | $4.0K | 2,855,960 |
| 2026-07-21 | Open-market purchase | Common Stock | 2,975 | $2 | $7.3K | 2,858,935 |
Key Dates
| Date | Description |
|---|---|
| 2026-07-17 | Open-market purchase (265 shares) |
| 2026-07-20 | Open-market purchase (1,623 shares) |
| 2026-07-21 | Open-market purchase (2,975 shares) |
Keywords
insider transaction, Form 4, BOLD, Boundless Bio, Inc., bullish, Kevin Tang, Tang Capital Management Llc
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