TANG KEVIN bought BOLD

July 13, 2026 · Form 4 insider transaction

TANG KEVIN bought 48,211 shares of Boundless Bio, Inc. at $2.42 per share, a transaction worth $116.7K. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 0 days after the transaction.

Direction
Acquired (buy-side)
Shares
48,211
Price
$2.42
Total value
$116.7K
InsiderTANG KEVIN
RoleOfficer, Director, 10% owner
SecurityCommon Stock
Transaction codeP: Open-market purchase
Transaction dateJuly 13, 2026
Filing dateJuly 13, 2026
Shares owned after2,790,103
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

These shares were purchased in multiple transactions at prices ranging from $2.35 to $2.44.; Tang Capital Partners, LP ("TCP") beneficially owns 639,395 shares, Tang Capital Partners International, LP ("TCPI") beneficially owns 871,923 shares, Tang Capital Partners III, Inc. ("TCP III") beneficially owns 639,390 shares, and Tang Capital Partners IV, Inc. ("TCP IV") beneficially owns 639,395 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.

View the original Form 4 on SEC EDGAR