BOLD · ISSUER CIK 1782303
Boundless Bio, Inc.
Between Jul 31, 2026 and Oct 28, 2026, 1 Boundless Bio, Inc. insiders reported $401K of open-market purchases and $54K of sales on SEC Form 4. The largest buyer was Tang Kevin (10% Owner), with $401K.
↗1 insiders filed
Original Form 4 filings from Jul 31, 2026 to Oct 28, 2026. 0 of 1 sales were reported under a 10b5-1 plan.
$401KInsider buying
$54KInsider selling
+$347KNet open-market
Oct 26, 2026Latest filing
| Ticker | Insider | Type | Owned | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 26, 202616:51 | Oct 26, 2026from Oct 22, 2026 | BOLD | 10% Owner · +1 joint | P · Buy | $2.39 | +21,640 | 3,011,749 | +1% | +$52K | -20.5% | +4.8% |
| Oct 20, 202617:49 | Oct 20, 2026from Oct 16, 2026 | BOLD | 10% Owner · +1 joint | P · Buy | $2.34 | +149,474 | 2,990,109 | +5% | +$350K | -22.0% | +6.9% |
| Aug 28, 202616:16 | Aug 26, 2026 | BOLD | 10% Owner · +1 joint | S · Sell | $2.97 | −18,300 | 2,840,635 | -1% | −$54K |