Boundless Bio, Inc.
BOLDReported to SECin USCIK 0001782303Filings at SEC EDGAR
No score on this page, by design. Everything here is a fact from a public U.S. register: insider filings at the SEC (Form 4), lobbying filings under the Lobbying Disclosure Act, trades reported by members of Congress under the STOCK Act, and fund holdings in 13F filings. Our scores, percentiles and signals run on the Dutch register only, because that is the only register the model has been validated on.
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The most recent filings
Most recent filing first: every line of every Form 4 at this company that passed our review, the same lines as on the register. Reported is the day the filing reached the SEC, usually within two business days of the trade. Amounts are in U.S. dollars, as the form states them.
| Filed by | Type | Value | Reported | Filed by | Value | Type | Shares | Reported |
|---|---|---|---|---|---|---|---|---|
| TANG KEVIN— | Open-market sell | $54,35118,300 shares | Aug 28, 2026 | TANG KEVIN | $54,351 | Open-market sell | 18,300 | Aug 28, 2026 |
| TANG KEVIN— | Open-market buy | $7,2592,975 shares | Jul 21, 2026 | TANG KEVIN | $7,259 | Open-market buy | 2,975 | Jul 21, 2026 |
| TANG KEVIN— | Open-market buy | $3,9601,623 shares | Jul 21, 2026 | TANG KEVIN | $3,960 | Open-market buy | 1,623 | Jul 21, 2026 |
| TANG KEVIN— | Open-market buy | $647265 shares | Jul 21, 2026 | TANG KEVIN | $647 | Open-market buy | 265 | Jul 21, 2026 |
| TANG KEVIN— | Open-market buy | $45,11818,491 shares | Jul 16, 2026 | TANG KEVIN | $45,118 | Open-market buy | 18,491 | Jul 16, 2026 |