ESTRELLA IMMUNOPHARMA, INC.
5858 Horton Street, Suite 370
Emeryville, California 94608
PROXY STATEMENT
FOR THE COMBINED 2025/2026 ANNUAL MEETING OF STOCKHOLDERS
To Be Held On June 29, 2026
QUESTIONS AND ANSWERS ABOUT THESE PROXY MATERIALS AND VOTING
We are providing you with these proxy materials because the Board of Directors of Estrella Immunopharma, Inc. (the “Board”) is soliciting your proxy to vote at the Combined 2025/2026 Annual Meeting of Stockholders (the “Annual Meeting”) of Estrella Immunopharma, Inc. (the “Company”), including at any adjournments or postponements thereof, to be held on Monday, June 29, 2026 at 10:00 a.m. Eastern Time. The Annual Meeting will be a virtual stockholder meeting through which you can listen to the meeting, submit questions in advance, and vote online. The Annual Meeting can be accessed by visiting www.virtualshareholdermeeting.com/ESLA2026 and entering your 16-digit control number (included on the proxy card mailed to you). There is no physical location for the Annual Meeting. You are invited to attend the Annual Meeting to vote on the proposal described in this Proxy Statement. However, you do not need to attend the Annual Meeting to vote your shares. Instead, you may simply follow the instructions below to submit your proxy. The proxy materials, including this Proxy Statement, are being distributed on or about May 27, 2026. As used in this Proxy Statement, references to “we,” “us,” “our,” “Estrella,” and the “Company” refer to Estrella Immunopharma, Inc. and our consolidated subsidiaries.
Why is this meeting called the “Combined 2025/2026 Annual Meeting of Stockholders”?
This meeting will serve as the Company’s annual meeting of stockholders for both fiscal year 2025 and fiscal year 2026. Although the meeting is referred to as the “Combined 2025/2026 Annual Meeting of Stockholders,” it is a single meeting of stockholders held in accordance with the Company’s certificate of incorporation and Delaware corporate law. Throughout this Proxy Statement, we refer to it simply as the “Annual Meeting.”
Why am I receiving these proxy materials?
The Board is providing these proxy materials to you in connection with the solicitation of proxies for use at the Annual Meeting. The proxy materials include this Proxy Statement, the Notice of Annual Meeting, and a proxy card with a postage-paid return envelope. These materials are first being mailed to stockholders on or about May 27, 2026. As a stockholder of record or beneficial owner of shares of common stock of the Company as of the record date, you are invited to attend the Annual Meeting and are entitled to vote on the proposal described in this Proxy Statement.
How do I attend the Annual Meeting?
The Annual Meeting will be held on Monday, June 29, 2026 at 10:00 a.m. Eastern Time. The Annual Meeting will be a virtual stockholder meeting through which you can listen to the meeting, submit questions in advance, and vote online. There will be no physical meeting location. To participate, you can access the Annual Meeting by visiting www.virtualshareholdermeeting.com/ESLA2026 and entering your 16-digit control number (included on the proxy card mailed to you). Prior to the Annual Meeting, you should ensure that you have a strong Internet connection. We also recommend that you log in a few minutes before the Annual Meeting on June 29, 2026 to ensure you are logged in when the meeting starts and to ensure that you can hear streaming audio prior to the start of the meeting. Online check-in will begin at 9:45 a.m. Eastern Time on June 29, 2026.
The Annual Meeting will be held in a virtual format to facilitate stockholder participation. Stockholders attending the virtual meeting will be afforded the same rights and opportunities to participate as they would at an in-person meeting. Information on how to vote online while attending the Annual Meeting is discussed below.
How do I submit questions for the Annual Meeting?
Stockholders of record and beneficial owners as of the record date may submit questions for consideration at the Annual Meeting through the virtual meeting platform at www.virtualshareholdermeeting.com/ESLA2026. Questions must be submitted no later than 10:00 a.m. Eastern Time on Friday, June 26, 2026. Only questions from stockholders of record or beneficial owners as of the record date will be considered, and questions should relate to the matters being voted on or to the business operations of the Company.