Mark Richard - 12 Nov 2025 Form 4 Insider Report for HALLIBURTON CO (HAL)

Signature
/s/ Sarah I. Rubenfeld, by Power of Attorney
Issuer symbol
HAL
Transactions as of
12 Nov 2025
Net transactions value
-$4,443,200
Form type
4
Filing time
13 Nov 2025, 14:14:55 UTC
Previous filing
07 Mar 2025
Next filing
08 Dec 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Richard Mark President - Western Hemisphere 3000 N. SAM HOUSTON PKWY E., HOUSTON /s/ Sarah I. Rubenfeld, by Power of Attorney 13 Nov 2025 0001767591

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction HAL Common Stock Sale $4,443,200 -160,000 -26% $27.77 452,374 12 Nov 2025 Direct F1, F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding HAL Option to Buy Common Stock (12/2018) 43,924 12 Nov 2025 Common Stock 43,924 $27.14 Direct
holding HAL Option to Buy Common Stock (01/2018) 24,019 12 Nov 2025 Commom Stock 24,019 $49.61 Direct
holding HAL Option to Buy Common Stock 17,119 12 Nov 2025 Common Stock 17,119 $55.68 Direct
holding HAL Option to Buy Common Stock 28,604 12 Nov 2025 Common Stock 28,604 $34.48 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sale was effected pursuant to a Rule 10b5-l trading plan adopted by the Reporting Person on August 13, 2025.
F2 Includes 901.551 shares of stock purchased through the Halliburton Company Employee Stock Purchase Plan for the period ending March 31, 2025.
F3 Includes 10,193.461 shares of stock accumulated through dividend reinvestment as of September 30, 2025.