Houghton Adam sold UPB
March 16, 2026 · Form 4 insider transaction
Houghton Adam sold 699 shares of Upstream Bio, Inc. at $9.29 per share, a transaction worth $6.5K. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Disposed (sell-side)
Shares
699
Price
$9.29
Total value
$6.5K
InsiderHoughton Adam
RoleOfficer
CompanyUpstream Bio, Inc. (UPB)
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateMarch 16, 2026
Filing dateMarch 17, 2026
Shares owned after24,301
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.