WLK shareholder plans NYSE Rule 144 sale of 40,836 common shares

Rhea-AI Filing Summary

A holder of 40,836 shares of common stock of WLK has filed a notice of proposed sale under Rule 144. The shares are expected to be sold through Morgan Stanley Smith Barney LLC on the NYSE, with an indicated aggregate market value of $3,004,365.77 and an approximate sale date of 12/22/2025. The filing states that these shares were acquired on 12/22/2025 through a stock option exercise for cash. The issuer reports 128,273,220 shares of this class outstanding, which serves as a baseline for the company’s equity.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	40836	3004365.77	128273220	12/22/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	12/22/2025	Stock Option Exercise	Issuer			40836	12/22/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many WLK shares are planned to be sold under this Rule 144 notice?

The notice covers a proposed sale of 40,836 shares of WLK common stock.

What is the aggregate market value of the WLK shares to be sold?

The filing lists an aggregate market value of $3,004,365.77 for the 40,836 common shares proposed to be sold.

Which broker will handle the planned WLK Rule 144 share sale?

The planned sale is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, New York, NY 10004.

On which exchange are the WLK shares expected to be sold and when?

The notice lists the NYSE as the securities exchange and gives an approximate sale date of 12/22/2025.

How and when were the WLK shares being sold under Rule 144 acquired?

The 40,836 shares were acquired on 12/22/2025 via a stock option exercise from the issuer, with the consideration described as cash.

How many WLK shares of this class are outstanding?

The filing reports 128,273,220 shares of this class of WLK common stock outstanding.