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SCHEDULE 13G Filed 2026-06-29 Event — SEC 0001214659-26-007864 →

TANG CAPITAL MANAGEMENT LLC Boundless Bio, Inc. BOLD

Stake: Shares: Class: Common stock, par value $0.0001 per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
14 transactions
14 buys · 0 sales · 0 awards/exercises
Issuer Cluster
1 13D/G filings on this issuer
0 other filings besides this one
Filer Track Record
11 filings by this filer
10 other filings in the data moat
Short Interest · settle 2026-07-31
DTC 1.52
223,819 shares short · -6.9% vs prior

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-07-13 TANG KEVIN 10%+ owner Buy 48,211 $2.42 $117K
2026-07-10 TANG KEVIN 10%+ owner Buy 43,367 $2.43 $105K
2026-07-09 TANG KEVIN 10%+ owner Buy 7 $2.48 $17
2026-07-02 TANG KEVIN 10%+ owner Buy 9,821 $2.49 $24K
2026-07-01 TANG KEVIN 10%+ owner Buy 71,612 $2.49 $178K
2026-06-30 TANG KEVIN 10%+ owner Buy 25,930 $2.54 $66K
2026-06-30 TANG KEVIN 10%+ owner Buy 100 $2.50 $250
2026-06-29 TANG KEVIN 10%+ owner Buy 63,985 $2.47 $158K
2026-06-29 TANG KEVIN 10%+ owner Buy 777 $2.48 $2K
2026-06-26 TANG KEVIN 10%+ owner Buy 75,047 $2.55 $191K
2026-06-26 TANG KEVIN 10%+ owner Buy 134 $2.54 $340
2026-06-25 TANG KEVIN 10%+ owner Buy 145,880 $2.48 $362K
2026-06-25 TANG KEVIN 10%+ owner Buy 510 $2.56 $1K
2026-06-15 Whiting Nancy director Award 32,000 $1.40 $45K

Other Filings by TANG CAPITAL MANAGEMENT LLC

FiledFormIssuerStakeShares
2026-07-27 SCHEDULE 13D/A Nano Dimension Ltd. 16,715,812 view →
2026-06-30 SCHEDULE 13D Nano Dimension Ltd. NNDM 14,292,813 view →
2026-06-10 SCHEDULE 13G Fulcrum Therapeutics, Inc. FULC view →
2026-06-04 SCHEDULE 13D/A Aurinia Pharmaceuticals Inc. AUPH 10.00% 13,044,106 view →
2026-05-13 SCHEDULE 13D/A Kezar Life Sciences, Inc. 0 view →
2025-09-03 SCHEDULE iTeos Therapeutics, Inc. 100.00% 10,000 view →
2025-05-19 SCHEDULE Allakos Inc. 100.00% 10,000 view →
2025-04-03 SCHEDULE Allakos Inc. 9.60% 8,693,687 view →
2025-03-04 SCHEDULE Aurinia Pharmaceuticals Inc. AUPH 7.30% 10,029,500 view →
2025-02-27 SCHEDULE ACELYRIN, Inc. 7.30% 7,298,328 view →

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