Michael Casey Maxwell - 05 May 2026 Form 4 Insider Report for HALLIBURTON CO (HAL)

Reporting relationship: President - Western Hemisphere
Issuer ticker: HAL
Reported as of: 05 May 2026
Net transaction value: -$852,445
SEC form: 4
Accepted by SEC: 06 May 2026, 14:14:47 UTC
Prior SEC filing: 03 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Sarah I. Rubenfeld, by Power of Attorney

Key filing fact

Michael Casey Maxwell filed Form 4 for HALLIBURTON CO (HAL) on 06 May 2026.

Key facts

This page summarizes Michael Casey Maxwell's Form 4 filing for HALLIBURTON CO (HAL).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 06 May 2026, 14:14.

Change

Previous filing in this sequence was filed on 03 Feb 2026.
Current net transaction value: -$852,445.

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 0002107660 Primary reporting owner

Maxwell Michael Casey

Relationship: President - Western Hemisphere
Address: 3000 NORTH SAM HOUSTON PARKWAY E., HOUSTON
Signature: /s/ Sarah I. Rubenfeld, by Power of Attorney
Signature date: 06 May 2026

Reported non-derivative transactions

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

HAL transaction

Common Stock

Sale

Transaction value: $567,601
Shares: -13,566
Change %: -12%
Price: $41.84
Shares after: 100,545
Date: 05 May 2026
Ownership: Direct
Footnotes: F1

HAL transaction

Common Stock

Sale

Transaction value: $284,844
Shares: -6,782
Change %: -6.7%
Price: $42.00
Shares after: 93,763
Date: 05 May 2026
Ownership: Direct
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 2 footnotes

Footnote F1

The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 3, 2026.

Footnote F2

Includes 656.906 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2026.