AI Biotechnology LLC - 26 Feb 2026 Form 4 Insider Report for Zura Bio Ltd (ZURA)

Reporting relationship: 10%+ Owner
Issuer ticker: ZURA
Reported as of: 26 Feb 2026
Net transaction value: +$12,500,000
SEC form: 4
Accepted by SEC: 02 Mar 2026, 17:55:03 UTC
Prior SEC filing: 28 May 2025
Next SEC filing: 07 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Alejandro Moreno for AI Biotechnology LLC

Key filing fact

AI Biotechnology LLC filed Form 4 for Zura Bio Ltd (ZURA) on 02 Mar 2026.

Key facts

This page summarizes AI Biotechnology LLC's Form 4 filing for Zura Bio Ltd (ZURA).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 02 Mar 2026, 17:55.

Change

Previous filing in this sequence was filed on 28 May 2025.
Current net transaction value: +$12,500,000.

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

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (4)

CIK 0001942670 Primary reporting owner

AI Biotechnology LLC

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno for AI Biotechnology LLC
Signature date: 02 Mar 2026

CIK 0001391297

Access Industries Holdings LLC

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno for Access Industries Holdings LLC
Signature date: 02 Mar 2026

CIK 0001508226

ACCESS INDUSTRIES MANAGEMENT, LLC

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno for Access Industries Management, LLC
Signature date: 02 Mar 2026

CIK 0001326628

Blavatnik Len

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno, as Attorney-in-Fact for Mr. Blavatnik
Signature date: 02 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ZURA transaction

Class A Ordinary Shares

Purchase

Transaction value: $12,500,000
Shares: +2,000,000
Change %: +44%
Price: $6.25
Shares after: 6,552,725
Date: 26 Feb 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Shares of Class A Ordinary Shares acquired pursuant to a registered offering of Class A Ordinary Shares by the Issuer.

Footnote F2

The securities reported are held directly by AI Biotechnology LLC ("AIB") and may be deemed to be beneficially owned by 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, and (iii) AIH owns all of the voting units of AIB. Each of AIH, AIM and Mr. Blavatnik, and each of their affiliated entities and the officers, partners, members and managers thereof, 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.