David Mikulecky - 09 Mar 2026 Form 4 Insider Report for Apex Treasury Corp (APXT)

Reporting relationship: Director
Issuer ticker: APXT
Reported as of: 09 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Mar 2026, 16:15:18 UTC
Prior SEC filing: 27 Oct 2025
Source filing: View source filing
Reporting owner signature: /s/ Jordan Leon, Attorney-in-Fact for David Mikulecky

Key filing fact

David Mikulecky filed Form 4 for Apex Treasury Corp (APXT) on 20 Mar 2026.

Key facts

This page summarizes David Mikulecky's Form 4 filing for Apex Treasury Corp (APXT).
0 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 20 Mar 2026, 16:15.

Change

Previous filing in this sequence was filed on 27 Oct 2025.
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 0002087325 Primary reporting owner

Mikulecky David

Relationship: Director
Address: C/O APEX TREASURY CORPORATION, 2035 REGATTA DRIVE, VERO BEACH
Signature: /s/ Jordan Leon, Attorney-in-Fact for David Mikulecky
Signature date: 20 Mar 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

APXT holding Derivative

Class B Ordinary Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 30,000
Date: 09 Mar 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 30,000
Exercise price
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

David Mikulecky is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 1 footnote

Footnote F1

The Class B Ordinary Shares are automatically convertible into the Issuer's Class A Ordinary Shares at the time of the Issuer's initial business combination, or earlier at the option of the holder thereof, on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date, as described under the heading "Description of Securities" in the Issuer's registration statement on Form S-1 (File No. 333-289485).

SEC remarks

On March 9, 2026, David Mikulecky resigned as a director of the Issuer. As a result, the reporting person is no longer subject to Section 16 in connection with his transactions in the securities of the Issuer and therefore will no longer report any such transactions on Form 4 or Form 5.