Boundless Bio, Inc. - BOLD

Ownership (Schedule 13D / 13G) · latest 50 filings · Back to all files
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Filed Form Reporting person Percent Shares SEC
Aug 27, 2026 SCHEDULE 13G Zachary Hornby 9.8% 2,426,857 View
Aug 14, 2026 SCHEDULE 13G ADAR1 Capital Management, LLC 8.8% 1,968,216 View
Aug 14, 2026 SCHEDULE 13G Daniel Schneeberger 8.8% 1,968,216 View
Aug 14, 2026 SCHEDULE 13G/A Citadel Advisors LLC 0.0% 0 View
Aug 14, 2026 SCHEDULE 13G/A Citadel Advisors Holdings LP 0.0% 0 View
Aug 14, 2026 SCHEDULE 13G/A Citadel GP LLC 0.0% 0 View
Aug 14, 2026 SCHEDULE 13G/A Citadel Securities LLC 0.3% 65,617 View
Aug 14, 2026 SCHEDULE 13G/A Citadel Securities Group LP 0.6% 145,118 View
Aug 14, 2026 SCHEDULE 13G/A Citadel Securities GP LLC 0.6% 145,118 View
Aug 14, 2026 SCHEDULE 13G/A Kenneth Griffin 0.6% 145,118 View
Jun 29, 2026 SCHEDULE 13G TANG CAPITAL MANAGEMENT, LLC 11.3% 2,533,845 View
Jun 29, 2026 SCHEDULE 13G KEVIN TANG 11.3% 2,533,845 View
Jun 29, 2026 SCHEDULE 13G TANG CAPITAL PARTNERS, LP 2.6% 580,669 View
Jun 29, 2026 SCHEDULE 13G TANG CAPITAL PARTNERS INTERNATIONAL, LP 3.5% 791,839 View
Jun 29, 2026 SCHEDULE 13G TANG CAPITAL PARTNERS III, INC 2.6% 580,668 View
Jun 29, 2026 SCHEDULE 13G TANG CAPITAL PARTNERS IV, INC 2.6% 580,669 View
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G. Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F). Amendments (/A) can repeat the same holder over time, so rows should not be summed. Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.