0001213900-26-044239 Sample Contracts

SUBSCRIPTION AGREEMENT
Subscription Agreement • April 16th, 2026 • Ionetix Corp / DE / • Blank checks • New York

This Subscription Agreement (this “Agreement”) has been entered into by and between the purchaser set forth on the Omnibus Signature Page hereof (the “Purchaser”) and JDEV Acquisition Corp. (to be renamed “Ionetix Corp.” upon consummation of the Merger (as defined below)), a Delaware corporation (the “Company”), in connection with the private placement offering (the “Offering”) by the Company.

AGREEMENT AND PLAN OF MERGER AND REORGANIZATION among JDEV ACQUISITION CORP, a Delaware corporation, JDEV Merger Subsidiary Corp., a Delaware corporation and IONETIX CORPORATION., a Delaware corporation April 9, 2026
Agreement and Plan of Merger and Reorganization • April 16th, 2026 • Ionetix Corp / DE / • Blank checks • Delaware

THIS AGREEMENT AND PLAN OF MERGER AND REORGANIZATION (this “Agreement”), dated as of April 9, 2026, by and among JDEV ACQUISITION CORP, a Delaware corporation (“PubCo”), JDEV Merger Subsidiary Corp., a Delaware corporation (the “Merger Sub”), and IONETIX CORPORATION, a Delaware corporation (the “Company”). PubCo, the Merger Sub and the Company are each a “Party” and referred to collectively herein as the “Parties.”

TERMINATION AGREEMENT
Termination Agreement • April 16th, 2026 • Ionetix Corp / DE / • Blank checks

This Termination Agreement (this “Termination Agreement”) is entered into by and among Ionetix Radioisotopes, Inc. (f/k/a Ionetix Corporation), a Delaware corporation (“Company”), Company’s wholly-owned subsidiary, Ionetix Alpha Corporation, a Delaware corporation (“Alpha”), Company’s sole stockholder, Ionetix Corporation (f/k/a JDEV Acquisition Corp.), a Delaware corporation (“PubCo”), Eli Lilly and Company, an Indiana corporation (“Lilly”), and POINT Biopharma Inc., a Delaware corporation (“Point”), effective as of immediately before the Effective Time of the Merger Agreement defined below.

INDEMNITY AGREEMENT
Indemnity Agreement • April 16th, 2026 • Ionetix Corp / DE / • Blank checks • Delaware

This Indemnity Agreement (the “Agreement”), dated as of [*], 2026, is entered into by and among JDEV Acquisition Corp., a Delaware corporation (“PubCo”), Ionetix Corporation, a Delaware corporation (“Ionetix” and together with PubCo, the “Companies”), and the undersigned Indemnitee (the “Indemnitee”).

REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • April 16th, 2026 • Ionetix Corp / DE / • Blank checks • New York
LOCK-UP AGREEMENT
Lock-Up Agreement • April 16th, 2026 • Ionetix Corp / DE / • Blank checks • New York

This LOCK-UP AGREEMENT (this “Agreement”) is made as of April __, 2026, by and between the undersigned person or entity (the “Restricted Holder”) and Ionetix Corporation (formerly known as JDEV Acquisition Corp.), a Delaware corporation (“PubCo”). Capitalized terms used and not otherwise defined herein shall have the meanings given to such terms in the Merger Agreement (as defined below).