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Upstream Bio (UPB) Insider Trading & Ownership

Upstream Bio logo
$8.79 -0.57 (-6.09%)
Closing price 05/14/2026 04:00 PM Eastern
Extended Trading
$8.78 -0.01 (-0.15%)
As of 08:13 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Upstream Bio (NASDAQ:UPB) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
13.56%
Number Of
Insiders Buying
(Last 12 Months)
0
Number Of
Insiders Selling
(Last 12 Months)
1
Amount Of
Insider Selling
(Last 12 Months)
$7.92K
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UPB Insider Buying and Selling by Quarter

Upstream Bio Insider and Congressional Trades History

Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
3/16/2026Sell852$9.29$7,915.08  
(Data available from 1/1/2013 forward)

UPB Insider Trading Activity - Frequently Asked Questions

The list of insiders at Upstream Bio includes Ai Upstream Llc, Erez Chimovits, and Michael Gray. Learn more on insiders at UPB.

13.56% of Upstream Bio stock is owned by insiders. Learn more on UPB's insider holdings.

The following insiders have purchased UPB shares in the last 24 months: Ai Upstream Llc ($19,975,000.00), and Erez Chimovits ($14,025,000.00).

Insiders have purchased a total of 2,000,000 UPB shares in the last 24 months for a total of $34,000,000.00 bought.

The following insider sold UPB shares in the last 24 months: Michael Gray ($7,915.08).

Insiders have sold a total of 852 Upstream Bio shares in the last 24 months for a total of $7,915.08 sold.



This page (NASDAQ:UPB) was last updated on 5/15/2026 by MarketBeat.com Staff.
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