July 16, 2026 · Form 4 insider transaction
TANG KEVIN bought 18,491 shares of Boundless Bio, Inc. at $2.44 per share, a transaction worth $45.1K. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 0 days after the transaction.
These shares were purchased in multiple transactions at prices ranging from $2.43 to $2.44.; Tang Capital Partners, LP ("TCP") beneficially owns 654,055 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 891,914 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 654,048 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 654,055 shares. Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.