Key facts
- This page summarizes AI Upstream LLC's Form 4 filing for Upstream Bio, Inc. (UPB).
- 5 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 17 Oct 2024, 16:05.
AI Upstream LLC - 15 Oct 2024 Form 4 Insider Report for Upstream Bio, Inc. (UPB)
- Reporting relationship
- 10%+ Owner
- Issuer ticker
- UPB
- Reported as of
- 15 Oct 2024
- Net transaction value
- +$19,975,000
- SEC form
- 4
- Accepted by SEC
- 17 Oct 2024, 16:05:04 UTC
- Prior SEC filing
- 10 Oct 2024
- Source filing
- View source filing
- Reporting owner signature
- /s/ Alejandro Moreno for AI Upstream LLC
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
AI Upstream LLC filed Form 4 for Upstream Bio, Inc. (UPB) on 17 Oct 2024.
Change
- Previous filing in this sequence was filed on 10 Oct 2024.
- Current net transaction value: +$19,975,000.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
UPB
transaction
Common Stock
Purchase
- Transaction value
- $19,975,000
- Shares
- +1,175,000
- Change %
- Price
- $17.00
- Shares after
- 1,175,000
- Date
- 15 Oct 2024
- Ownership
- Direct
- Footnotes
- F2
UPB
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +3,147,000
- Change %
- +268%
- Price
- Shares after
- 4,322,000
- Date
- 15 Oct 2024
- Ownership
- Direct
- Footnotes
- F1, F2
UPB
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +1,172,410
- Change %
- +27%
- Price
- Shares after
- 5,494,410
- Date
- 15 Oct 2024
- Ownership
- Direct
- Footnotes
- F1, F2
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
UPB
transaction
Derivative
Series A Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -3,147,000
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 15 Oct 2024
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,147,000
- Exercise price
- Footnotes
- F1, F2
UPB
transaction
Derivative
Series B Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -1,172,410
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 15 Oct 2024
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,172,410
- Exercise price
- Footnotes
- F1, F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 2 footnotes
Footnote F1
Each share of the Issuer's Series A preferred stock and Series B preferred stock (collectively, the "Preferred Stock") converted into Common Stock on a 1.049-for-one basis upon closing of the Issuer's initial public offering without payment of consideration. The Preferred Stock had no expiration date.
Footnote F2
The securities reported are held directly by AI Upstream LLC ("AI Upstream") and may be deemed to be beneficially owned by AI Biotechnology LLC ("AI Biotechnology"), Access Industries Holdings LLC ("AIH"), Access Industries Management, LLC ("AIM") and Len Blavatnik because (i) Mr. Blavatnik controls AIM and AIH, (ii) AIM controls AIH, (iii) AIH owns all of the voting units of AI Biotechnology and (iv) AI Biotechnology owns all of the voting units of AI Upstream. Each of the reporting persons (other than AI Upstream) disclaims beneficial ownership of these securities, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form.