Boundless Bio, Inc.
BOLDCIK 0001782303 · last filing Jul 8, 2026
Insider signal
trades dated in the last 90 days · non-derivative only
196,673 bought / 32,000 sold
net +164,673 sh · +$364.0K
- buys
- 9
- sells
- 2
- insiders active
- 15
Filing tape
Filed Wed, Jul 8, 2026
- +57,210 sh · $141.9K
Tang Kevin +1 — 10% owner
- Bought27,062Common Stock@ $2.49→ 2,668,370 held
- Bought15,810Common Stock@ $2.48→ 2,684,180 held
- Bought14,338Common Stock@ $2.46→ 2,698,518 held
Filed Mon, Jul 6, 2026
- −0 sh · $23.4K
Crandell Keith +4 — 10% owner
- Exercised16,000Common Stock@ $1.03→ 16,000 held
- Sold16,000Common Stock@ $2.49→ 0 held
- Exercised16,000Stock Option (right to buy)→ 0 held
- −0 sh · $23.4K
ARCH Venture Fund IX, L.P. +7 — 10% owner
- Exercised16,000Common Stock@ $1.03→ 16,000 held
- Sold16,000Common Stock@ $2.49→ 0 held
- Exercised16,000Stock Option (right to buy)→ 0 held
Filed Thu, Jul 2, 2026
- +107,463 sh · $268.9K
Tang Kevin +1 — 10% owner
- Bought25,930Common Stock@ $2.54→ 2,559,775 held
- Bought100Common Stock@ $2.50→ 2,559,875 held
- Bought71,612Common Stock@ $2.49→ 2,631,487 held
- Bought9,821Common Stock@ $2.49→ 2,641,308 held
Insiders on this tape
- Tang Kevin10% owner
- Tang Capital Management LLC10% owner
- Crandell Keith10% owner
- Bybee Clinton10% owner
- Nelsen Robert10% owner
- Gillis Steven10% owner
- Burow Kristina10% owner
- ARCH Venture Fund IX, L.P.10% owner
- ARCH Venture Fund IX Overage, L.P.10% owner
- ARCH Venture Fund X Overage, L.P.10% owner
- ARCH Venture Partners IX, L.P.10% owner
- ARCH Venture Partners IX Overage, L.P.10% owner
- ARCH Venture Partners X Overage, L.P.10% owner
- ARCH Venture Partners IX, LLC10% owner
- ARCH Venture Partners X, LLC10% owner
Informational data only — not investment advice.
The institutional holdings shown here are aggregated from third-party public regulatory filings (such as SEC Form 13F). These filings are reported with a delay (generally up to 45 days after each quarter-end), are backward-looking, and may exclude short positions, non-U.S. holdings, cash, and other assets. The data may contain errors, omissions, misclassifications, or gaps, and may not reflect a manager's current positions.
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