NASDAQ:BOLD | Insider Transactions | Boundless Bio, Inc.

BOLD Insider Transactions

95 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–95; provenance stays internal.

BOLD insiders transaction timeline

PurchaseSale
2024-04-02: 36 purchases — RA Capital Healthcare Fund LP, RA CAPITAL MANAGEMENT, L.P., Kolchinsky Peter and 15 more2026-06-25: 4 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-06-26: 4 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-06-29: 4 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-06-30: 4 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-01: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-01: 13 sales — CRANDELL KEITH, NELSEN ROBERT, BYBEE CLINTON and 10 more2026-07-02: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-06: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-07: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-08: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-09: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-10: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-13: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-14: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-15: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-16: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-17: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-20: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-07-21: 2 purchases — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2026-08-26: 2 sales — TANG KEVIN, TANG CAPITAL MANAGEMENT LLC2024-04-022026-08-26
Insider profileRoleDateTransactionSharesPrice
TANG KEVINTen Percent Owner2026-08-26Sale18,300$2.97
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-08-26Sale18,300$2.97
TANG KEVINTen Percent Owner2026-07-21Purchase2,975$2.44
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-21Purchase2,975$2.44
TANG KEVINTen Percent Owner2026-07-20Purchase1,623$2.44
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-20Purchase1,623$2.44
TANG KEVINTen Percent Owner2026-07-17Purchase265$2.44
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-17Purchase265$2.44
TANG KEVINTen Percent Owner2026-07-16Purchase18,491$2.44
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-16Purchase18,491$2.44
TANG KEVINTen Percent Owner2026-07-15Purchase1,600$2.44
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-15Purchase1,600$2.44
TANG KEVINTen Percent Owner2026-07-14Purchase43,878$2.43
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-14Purchase43,878$2.43
TANG KEVINTen Percent Owner2026-07-13Purchase48,211$2.42
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-13Purchase48,211$2.42
TANG KEVINTen Percent Owner2026-07-10Purchase43,367$2.43
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-10Purchase43,367$2.43
TANG KEVINTen Percent Owner2026-07-09Purchase7$2.48
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-09Purchase7$2.48
TANG KEVINTen Percent Owner2026-07-08Purchase14,338$2.46
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-08Purchase14,338$2.46
TANG KEVINTen Percent Owner2026-07-07Purchase15,810$2.48
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-07Purchase15,810$2.48
TANG KEVINTen Percent Owner2026-07-06Purchase27,062$2.49
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-06Purchase27,062$2.49
TANG KEVINTen Percent Owner2026-07-02Purchase9,821$2.49
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-02Purchase9,821$2.49
CRANDELL KEITHTen Percent Owner2026-07-01Sale16,000$2.49
NELSEN ROBERTTen Percent Owner2026-07-01Sale16,000$2.49
BYBEE CLINTONTen Percent Owner2026-07-01Sale16,000$2.49
GILLIS STEVENTen Percent Owner2026-07-01Sale16,000$2.49
Burow KristinaTen Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Fund IX, L.P.Ten Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Fund IX Overage, L.P.Ten Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Partners IX Overage, L.P.Ten Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Partners IX, L.P.Ten Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Partners IX, LLCTen Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Fund X Overage, L.P.Ten Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Partners X Overage, L.P.Ten Percent Owner2026-07-01Sale16,000$2.49
ARCH Venture Partners X, LLCTen Percent Owner2026-07-01Sale16,000$2.49
TANG KEVINTen Percent Owner2026-07-01Purchase71,612$2.49
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-07-01Purchase71,612$2.49
TANG KEVINTen Percent Owner2026-06-30Purchase100$2.50
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-06-30Purchase100$2.50
TANG KEVINTen Percent Owner2026-06-30Purchase25,930$2.54
TANG CAPITAL MANAGEMENT LLCTen Percent Owner2026-06-30Purchase25,930$2.54
TANG KEVINTenPercentOwner2026-06-29Purchase777.0$2.48
TANG CAPITAL MANAGEMENT LLCTenPercentOwner2026-06-29Purchase777.0$2.48
TANG KEVINTenPercentOwner2026-06-29Purchase63,985.0$2.47
TANG CAPITAL MANAGEMENT LLCTenPercentOwner2026-06-29Purchase63,985.0$2.47
TANG KEVINTenPercentOwner2026-06-26Purchase134.0$2.54
TANG CAPITAL MANAGEMENT LLCTenPercentOwner2026-06-26Purchase134.0$2.54
TANG KEVINTenPercentOwner2026-06-26Purchase75,047.0$2.55
TANG CAPITAL MANAGEMENT LLCTenPercentOwner2026-06-26Purchase75,047.0$2.55
TANG KEVINTenPercentOwner2026-06-25Purchase510.0$2.56
TANG CAPITAL MANAGEMENT LLCTenPercentOwner2026-06-25Purchase510.0$2.56
TANG KEVINTenPercentOwner2026-06-25Purchase145,880.0$2.48
TANG CAPITAL MANAGEMENT LLCTenPercentOwner2026-06-25Purchase145,880.0$2.48
RA Capital Healthcare Fund LPTenPercentOwner2024-04-02Purchase15,625.0$16.0
RA CAPITAL MANAGEMENT, L.P.TenPercentOwner2024-04-02Purchase15,625.0$16.0
Kolchinsky PeterTenPercentOwner2024-04-02Purchase15,625.0$16.0
Shah Rajeev M.TenPercentOwner2024-04-02Purchase15,625.0$16.0
RA Capital Nexus Fund II, L.P.TenPercentOwner2024-04-02Purchase15,625.0$16.0
RA Capital Healthcare Fund LPTenPercentOwner2024-04-02Purchase296,875.0$16.0
RA CAPITAL MANAGEMENT, L.P.TenPercentOwner2024-04-02Purchase296,875.0$16.0
Kolchinsky PeterTenPercentOwner2024-04-02Purchase296,875.0$16.0
Shah Rajeev M.TenPercentOwner2024-04-02Purchase296,875.0$16.0
RA Capital Nexus Fund II, L.P.TenPercentOwner2024-04-02Purchase296,875.0$16.0
Burow KristinaDirector,TenPercentOwner2024-04-02Purchase133,333.0$16.0
Burow KristinaDirector,TenPercentOwner2024-04-02Purchase66,667.0$16.0
CRANDELL KEITHTenPercentOwner2024-04-02Purchase133,333.0$16.0
NELSEN ROBERTTenPercentOwner2024-04-02Purchase133,333.0$16.0
BYBEE CLINTONTenPercentOwner2024-04-02Purchase133,333.0$16.0
GILLIS STEVENTenPercentOwner2024-04-02Purchase133,333.0$16.0
CRANDELL KEITHTenPercentOwner2024-04-02Purchase66,667.0$16.0
NELSEN ROBERTTenPercentOwner2024-04-02Purchase66,667.0$16.0
BYBEE CLINTONTenPercentOwner2024-04-02Purchase66,667.0$16.0
GILLIS STEVENTenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Fund IX, L.P.TenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Fund IX Overage, L.P.TenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Partners IX Overage, L.P.TenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Partners IX, L.P.TenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Partners IX, LLCTenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Fund X Overage, L.P.TenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Partners X Overage, L.P.TenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Partners X, LLCTenPercentOwner2024-04-02Purchase133,333.0$16.0
ARCH Venture Fund IX, L.P.TenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Fund IX Overage, L.P.TenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Partners IX Overage, L.P.TenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Partners IX, L.P.TenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Partners IX, LLCTenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Fund X Overage, L.P.TenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Partners X Overage, L.P.TenPercentOwner2024-04-02Purchase66,667.0$16.0
ARCH Venture Partners X, LLCTenPercentOwner2024-04-02Purchase66,667.0$16.0