Michael Paul Stewart - 09 Apr 2026 Form 4 Insider Report for Ionetix Corp / DE /

Reporting relationship: Director
Issuer ticker: N/A
Reported as of: 09 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 May 2026, 14:27:57 UTC
Prior SEC filing: 23 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Phieu Phun, as Attorney-in-Fact for Michael Paul Stewart

Key filing fact

Michael Paul Stewart filed Form 4 for Ionetix Corp / DE / on 13 May 2026.

Key facts

This page summarizes Michael Paul Stewart's Form 4 filing for Ionetix Corp / DE /.
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 13 May 2026, 14:27.

Change

Previous filing in this sequence was filed on 23 Apr 2026.
Current net transaction value: $0.

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 (1)

CIK 0002130794 Primary reporting owner

Stewart Michael Paul

Relationship: Director
Address: C/O IONETIX CORPORATION, 3130 SOVEREIGN DRIVE, LANSING
Signature: /s/ Phieu Phun, as Attorney-in-Fact for Michael Paul Stewart
Signature date: 13 May 2026

Reported non-derivative transactions

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

No ticker transaction

Common Stock

Award

Transaction value
Shares: +132,641
Change %
Price
Shares after: 132,641
Date: 09 Apr 2026
Ownership: By MP Stewart 2 LLC
Footnotes: F1, F2

No ticker transaction

Common Stock

Award

Transaction value
Shares: +596,905
Change %
Price
Shares after: 596,905
Date: 09 Apr 2026
Ownership: By MP Stewart LLC
Footnotes: F1, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Received in connection with the Issuer's merger (the "Merger") with Ionetix Corporation ("Legacy Ionetix") pursuant to the Agreement and Plan of Merger and Reorganization dated as of April 9, 2026 (the "Merger Agreement"). Pursuant to the Merger Agreement, each outstanding share of Legacy Ionetix common stock was converted into the right to receive 0.5014 shares of the Issuer's Common Stock. The Merger closed on April 9, 2026.

Footnote F2

Held of record by MP Stewart 2 LLC. The Reporting Person has sole voting and investment power over the securities held by MP Stewart 2 LLC. The Reporting Person disclaims beneficial ownership of the securities held by MP Stewart 2 LLC except to the extent of his pecuniary interest therein.

Footnote F3

Held of record by MP Stewart LLC. The Reporting Person has sole voting and investment power over the securities held by MP Stewart LLC. The Reporting Person disclaims beneficial ownership of the securities held by MP Stewart LLC except to the extent of his pecuniary interest therein.