Company · CIK 0001782303 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
Boundless Bio, Inc. · BOLD
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 26, 2026 SForm 4 → | Aug 28, 4:16 pm EDT | Kevin Tang +110% Owner | 18,300 | $2.97 | $54,351 | 2,840,635 | −0.64% | |
| Jul 17, 2026 PForm 4 → | Jul 21, 7:38 pm EDT | Kevin Tang +110% Owner | 4,863 | $2.44 | $11,866 | 2,858,935 | +0.17% | |
| Jul 14, 2026 PForm 4 → | Jul 16, 8:10 pm EDT | Kevin Tang +110% Owner | 63,969 | $2.43 | $155,646 | 2,854,072 | +2.29% | |
| Jul 9, 2026 PForm 4 → | Jul 13, 7:06 pm EDT | Kevin Tang +110% Owner | 91,585 | $2.42 | $222,070 | 2,790,103 | +3.39% | |
| Jul 6, 2026 PForm 4 → | Jul 8, 8:06 pm EDT | Kevin Tang +110% Owner | 57,210 | $2.48 | $141,865 | 2,698,518 | +2.17% | |
| Jul 1, 2026 SForm 4 → | Jul 6, 5:44 pm EDT | Keith Crandell +410% Owner | 16,000 | $2.49 | $39,840 | 0 | −100% | |
| Jul 1, 2026 MForm 4 → | Jul 6, 5:44 pm EDT | Keith Crandell +410% Owner | 16,000 | $1.03 | $16,480 | 16,000 | — | |
| Jul 1, 2026 SForm 4 → | Jul 6, 5:43 pm EDT | ARCH Venture Fund IX, L.P. +710% Owner | 16,000 | $2.49 | $39,840 | 0 | −100% | |
| Jul 1, 2026 MForm 4 → | Jul 6, 5:43 pm EDT | ARCH Venture Fund IX, L.P. +710% Owner | 16,000 | $1.03 | $16,480 | 16,000 | — | |
| Jun 30, 2026 PForm 4 → | Jul 2, 7:45 pm EDT | Kevin Tang +110% Owner | 107,463 | $2.50 | $268,880 | 2,641,308 | +4.24% | |
| Jun 25, 2026 PForm 4 → | Jun 29, 7:56 pm EDT | Kevin Tang +110% Owner | 286,333 | $2.50 | $714,768 | 2,533,845 | +12.7% |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 1, 2026 MForm 4 → | Jul 6, 5:44 pm EDT | Keith Crandell +410% Owner | 16,000 | — | — | 0 | — | |
| Jul 1, 2026 MForm 4 → | Jul 6, 5:43 pm EDT | ARCH Venture Fund IX, L.P. +710% Owner | 16,000 | — | — | 0 | — | |
| Jun 15, 2026 AForm 4 → | Jun 15, 7:40 pm EDT | Nancy WhitingDirector | 32,000 | — | — | 32,000 | — | |
| Jun 15, 2026 AForm 4 → | Jun 15, 7:36 pm EDT | Jonathan E LimDirector | 48,000 | — | — | 48,000 | — | |
| Jun 15, 2026 AForm 4 → | Jun 15, 7:31 pm EDT | James ChristensenDirector | 32,000 | — | — | 32,000 | — | |
| Jun 15, 2026 AForm 4 → | Jun 15, 7:28 pm EDT | Jennifer LewDirector | 32,000 | — | — | 32,000 | — |