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 14, 2026.
Summary
- Open-market purchase: acquired 43,878 Common Stock at $2.43 ($106,624) on July 14, 2026; holds 2,833,981 after (Indirect).
- Open-market purchase: acquired 1,600 Common Stock at $2.44 ($3,904) on July 15, 2026; holds 2,835,581 after (Indirect).
- Open-market purchase: acquired 18,491 Common Stock at $2.44 ($45,118) on July 16, 2026; holds 2,854,072 after (Indirect).
Sentiment
Score: 7
Explanation: StockSavvy.ai views this as a bullish signal: an insider made an open-market purchase of $155,646, 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 |
|---|---|---|---|---|---|---|
| 2026-07-14 | Open-market purchase | Common Stock | 43,878 | $2 | $106.6K | 2,833,981 |
| 2026-07-15 | Open-market purchase | Common Stock | 1,600 | $2 | $3.9K | 2,835,581 |
| 2026-07-16 | Open-market purchase | Common Stock | 18,491 | $2 | $45.1K | 2,854,072 |
Key Dates
| Date | Description |
|---|---|
| 2026-07-14 | Open-market purchase (43,878 shares) |
| 2026-07-15 | Open-market purchase (1,600 shares) |
| 2026-07-16 | Open-market purchase (18,491 shares) |
Keywords
insider transaction, Form 4, BOLD, Boundless Bio, Inc., bullish, Kevin Tang, Tang Capital Management Llc
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