Company Form 4
Boundless Bio, Inc. (BOLD) Insider Trading Activity
Recent Form 4 filings for Boundless Bio, Inc., grouped by transaction type, insider role, shares, value, and current-window signal.
Latest filing2026-07-16
Insider buys3
Insider sells0
Reported value$155,646
Current Window Interpretation
Boundless Bio, Inc. has 3 Form 4 rows in the current 10-day generated window. The read is buy-heavy current window, with 3 buy rows, 0 sale rows, 0 grant rows, and $155,646 in reported transaction value.
Key Insider Activity
Largest buy $106,624
TANG KEVIN · 43,878 shares
Largest sell N/A
No current-window sale row.
Total shares 63,969
Across all current-window rows.
Latest Insider Transactions
Sorted by transaction date and reported value.
| Date | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 2026-07-162026-07-16 | TANG KEVINReporting owner | Open-market purchase | 18,491 | $45,118Price $2 |
| 2026-07-152026-07-16 | TANG KEVINReporting owner | Open-market purchase | 1,600 | $3,904Price $2 |
| 2026-07-142026-07-16 | TANG KEVINReporting owner | Open-market purchase | 43,878 | $106,624Price $2 |