4//SEC Filing
Blavatnik Len 4
Accession 0000950170-24-115295
CIK 0002022626other
Filed
Oct 16, 8:00 PM ET
Accepted
Oct 17, 4:05 PM ET
Size
19.6 KB
Accession
0000950170-24-115295
Insider Transaction Report
Form 4
Access Industries Holdings LLC
10% Owner
Transactions
- Conversion
Series A Convertible Preferred Stock
2024-10-15−3,147,000→ 0 total→ Common Stock (3,147,000 underlying) - Conversion
Series B Convertible Preferred Stock
2024-10-15−1,172,410→ 0 total→ Common Stock (1,172,410 underlying) - Purchase
Common Stock
2024-10-15$17.00/sh+1,175,000$19,975,000→ 1,175,000 total - Conversion
Common Stock
2024-10-15+3,147,000→ 4,322,000 total - Conversion
Common Stock
2024-10-15+1,172,410→ 5,494,410 total
ACCESS INDUSTRIES MANAGEMENT, LLC
10% Owner
Transactions
- Purchase
Common Stock
2024-10-15$17.00/sh+1,175,000$19,975,000→ 1,175,000 total - Conversion
Common Stock
2024-10-15+3,147,000→ 4,322,000 total - Conversion
Common Stock
2024-10-15+1,172,410→ 5,494,410 total - Conversion
Series A Convertible Preferred Stock
2024-10-15−3,147,000→ 0 total→ Common Stock (3,147,000 underlying) - Conversion
Series B Convertible Preferred Stock
2024-10-15−1,172,410→ 0 total→ Common Stock (1,172,410 underlying)
AI Upstream LLC
10% Owner
Transactions
- Conversion
Common Stock
2024-10-15+3,147,000→ 4,322,000 total - Purchase
Common Stock
2024-10-15$17.00/sh+1,175,000$19,975,000→ 1,175,000 total - Conversion
Common Stock
2024-10-15+1,172,410→ 5,494,410 total - Conversion
Series A Convertible Preferred Stock
2024-10-15−3,147,000→ 0 total→ Common Stock (3,147,000 underlying) - Conversion
Series B Convertible Preferred Stock
2024-10-15−1,172,410→ 0 total→ Common Stock (1,172,410 underlying)
AI Biotechnology LLC
10% Owner
Transactions
- Purchase
Common Stock
2024-10-15$17.00/sh+1,175,000$19,975,000→ 1,175,000 total - Conversion
Common Stock
2024-10-15+3,147,000→ 4,322,000 total - Conversion
Series A Convertible Preferred Stock
2024-10-15−3,147,000→ 0 total→ Common Stock (3,147,000 underlying) - Conversion
Common Stock
2024-10-15+1,172,410→ 5,494,410 total - Conversion
Series B Convertible Preferred Stock
2024-10-15−1,172,410→ 0 total→ Common Stock (1,172,410 underlying)
Blavatnik Len
10% Owner
Transactions
- Conversion
Series A Convertible Preferred Stock
2024-10-15−3,147,000→ 0 total→ Common Stock (3,147,000 underlying) - Purchase
Common Stock
2024-10-15$17.00/sh+1,175,000$19,975,000→ 1,175,000 total - Conversion
Series B Convertible Preferred Stock
2024-10-15−1,172,410→ 0 total→ Common Stock (1,172,410 underlying) - Conversion
Common Stock
2024-10-15+3,147,000→ 4,322,000 total - Conversion
Common Stock
2024-10-15+1,172,410→ 5,494,410 total
Footnotes (2)
- [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.
- [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.
Documents
Issuer
Upstream Bio, Inc.
CIK 0002022626
Entity typeother
Related Parties
1- filerCIK 0001326628
Filing Metadata
- Form type
- 4
- Filed
- Oct 16, 8:00 PM ET
- Accepted
- Oct 17, 4:05 PM ET
- Size
- 19.6 KB