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UPB

Upstream Bio, Inc.

Company with tickers: UPB

CIK
2022626
CUSIP
91678A107
Shares Outstanding
54,419,986
13F Activity (30d)
13 filings 8 filers

Fails to deliver — shares from a trade that were not delivered to the buyer by the settlement date — published by the SEC twice a month. Persistent fails can reflect settlement problems or naked short selling.

Fails to Deliver History

Settlement Date Quantity Price Value
2026-05-22 41,726 $8.46 $353,002
2026-05-21 2,321 $8.41 $19,520
2026-05-14 2,747 $9.36 $25,712
2026-05-11 417 $9.09 $3,791
2026-04-20 5 $9.99 $50
2026-04-06 13,236 $9.50 $125,742
2026-04-02 1,141 $9.31 $10,623
2026-03-26 12,209 $9.47 $115,619
2026-03-24 1,640 $8.45 $13,858
2026-03-23 46,490 $8.67 $403,068
Showing 1–10 of 10 settlements