AI Upstream LLC

CIK: 0002039907

Transaction Breakdown

Open Market Buys (P)1 (33.3%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)2 (66.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

UPB

Upstream Bio, Inc.

10% Owner

Discretionary Trading P&L

Holdings

Transaction History (3 total)

UPB
Upstream Bio, Inc.
Oct 15, 2024
Purchase(P)
Direct
1.2M shares at avg. $17.00$20.0M
UPB
Upstream Bio, Inc.
Oct 15, 2024
Conversion(C)
Direct
3.1M shares-
UPB
Upstream Bio, Inc.
Oct 15, 2024
Conversion(C)
Direct
1.2M shares-

		Type	Shares	Price		Ownership
Oct 15, 2024	UPB Upstream Bio, Inc.	Purchase(P)	1,175,000	$17.00	$19,975,000	Direct
Oct 15, 2024	UPB Upstream Bio, Inc.	Conversion(C)	3,147,000	-	$0	Direct
Oct 15, 2024	UPB Upstream Bio, Inc.	Conversion(C)	1,172,410	-	$0	Direct

1-3 of 3 transactions

About AI Upstream LLC

AI Upstream LLC (SEC CIK 0002039907) files insider reports with the SEC as 10% Owner of Upstream Bio, Inc. (UPB).

Signal8 holds 2 ownership filings by AI Upstream LLC (1 Form 3, 1 Form 4), filed between Oct 10, 2024 and Oct 17, 2024. Those filings report 3 transactions, the latest on Oct 15, 2024. Signal8's Form 4 history starts in Sep 2024.

The business address on AI Upstream LLC's filings is in NEW YORK, NY.

Recent filings by AI Upstream LLC

Oct 15, 2024: Open-market purchase of UPB shares (Form 4, code P).
Oct 15, 2024: Conversions of UPB shares (2 lines, Form 4, code C).

Other insiders filing for Upstream Bio, Inc. (UPB)

GRAY MICHAEL, CFO and COO
Ambrose Allison, General Counsel
Deykin Aaron, Chief Medical Officer
Sutherland Everett Rand, Chief Executive Officer
Houghton Adam, Chief Business Officer
Ruddy Marcella K., Director

How to read Form 4 transaction codes