SEC Insider Transactions from AI Upstream LLC.

Last updated: 2026-03-14 10:42 UTC | Total transactions: 5

AI Upstream LLC has filed 5 insider transactions across 1 company since October 2024.

Most recent transaction: a purchase of 1175000 shares of Upstream Bio, Inc. ($UPB) on October 15, 2024.

Activity breakdown: 1 open-market purchase and 0 sales.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Oct. 15, 2024 Upstream Bio, Inc. $UPB AI Upstream LLC Not found P Common Stock 1175000 $17.00 1,175,000.0000 0 9999.99% 0.00%
Oct. 15, 2024 Upstream Bio, Inc. $UPB AI Upstream LLC Not found C Common Stock 3147000 $0.00 4,322,000.0000 0 267.83% 0.00%
Oct. 15, 2024 Upstream Bio, Inc. $UPB AI Upstream LLC Not found C Common Stock 1172410 $0.00 5,494,410.0000 0 27.13% 0.00%
Oct. 15, 2024 Upstream Bio, Inc. $UPB AI Upstream LLC Not found C Series A Convertible Preferred Stock 3147000 $0.00 0.0000 0 100.00% 0.00%
Oct. 15, 2024 Upstream Bio, Inc. $UPB AI Upstream LLC Not found C Series B Convertible Preferred Stock 1172410 $0.00 0.0000 0 100.00% 0.00%