Contract analysis

1. Announcement of CFIUS Clearance We are pleased to confirm that earlier today, January 26, 2024, we received the official clearance letter from the U.S. Department of the Treasury, acting in its capacity as Chair of the Committee on Foreign Investment in the United States ("CFIUS"). A copy of the clearance letter is enclosed with this correspondence as Enclosure 1 for your records and for distribution to the HSAG V

2. Summary of the National Security Agreement For ease of reference, and as a reminder of the obligations that will activate immediately upon the closing of the transaction, we set forth below a summary of the principal terms and conditions of the executed National Security Agreement (NSA-2024-0019). A copy of the fully executed NSA, which was previously transmitted to you on January 19, 2024, is also enclosed as Enc

3. Target Closing Date and SPA Condition Satisfaction With the CFIUS clearance letter now in hand, the final regulatory condition precedent set forth in Section 7.1(c) of the Stock Purchase Agreement dated June 5, 2023, as amended (the "SPA"), has been satisfied. As you are aware, Section 7.1(c) required, as a condition to each party's obligation to consummate the closing, the receipt of clearance from CFIUS, includi

4. Immediate Next Steps — Pre-Closing Actions The following pre-closing and post-closing actions must be completed in connection with the CFIUS clearance and the anticipated closing of the transaction. We address each in turn. 4.1 Officer's Certificates We are in the process of finalizing draft officer's certificates for execution by the appropriate officers of each party. Dr. Maximilian Ehrhardt, as Chief Executive

5. Coordination with Other Counsel and Advisors To ensure a seamless closing process, we are actively coordinating with the following counsel and advisors: • Wethersfield & Gale LLP (Harrison Whitfield, Sandra Niehaus, and Tobias Kwan): As counsel to VPI and the selling stockholders, Wethersfield & Gale is coordinating on all seller-side closing deliverables, including the VPI officer's certificate, the VPI post-clos

6. Remaining Calderwood & Harkness Engagement Matters As a housekeeping matter, we wish to note that the CFIUS engagement undertaken by this firm on behalf of HSAG will formally close on January 30, 2024, following the completion of the closing deliverables described in this letter. Kenneth Morales is coordinating with the broader M&A transaction closing workstream, which is being led by Beatrice Holloway and James P

7. Closing Remarks On behalf of the entire Calderwood & Harkness team, we wish to extend our sincere congratulations to Dr. Maximilian Ehrhardt, Katarina Brückner, you, and the entire HSAG team on the successful conclusion of the CFIUS review process. Obtaining CFIUS clearance for an acquisition of this magnitude and sensitivity — involving a foreign acquirer, classified programs, ITAR-controlled technology, and a su