Insider sells 30,102 shares; Company (WLK) Form 144 discloses February trades

Rhea-AI Filing Summary

Mark Bender reports dispositions of Common stock, selling 30,102 shares on 02/27/2026 for $3,003,393.25, 1,209 shares on 02/18/2026 for $119,630.55, and 445 shares on 02/20/2026 for $41,874.14.

The filing also lists awards eligible for sale including restricted stock and performance shares granted on 02/17/2020, 02/14/2021, 02/18/2022, 02/19/2024, and 02/18/2025 with listed share counts.

Insights

Equity Compensation Analyst

Insider reported multiple open-market sales across February 2026.

The filing shows Mark Bender sold a total of 31,756 shares across three trades in February 2026, with proceeds explicitly listed for each trade. Cash proceeds for the largest trade were $3,003,393.25.

These transactions are routine dispositions recorded on a Form 144. The excerpt lists award grant dates and counts that may represent sources of the sold shares; timing and method details beyond the trade dates are not provided in the excerpt.

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

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	16413	1847033.67	127910338	03/27/2026	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	02/14/2021	Restricted Stock	Issuer			1076	02/14/2021	Not Applicable
Common	02/18/2022	Performance Shares	Issuer			4777	02/18/2022	Not Applicable
Common	02/19/2024	Restricted Stock	Issuer			3139	02/19/2024	Not Applicable
Common	02/17/2020	Restricted Stock	Issuer			3918	02/17/2020	Not Applicable
Common	02/18/2025	Restricted Stock	Issuer			3503	02/18/2025	Not Applicable

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MARK BENDER 2801 Post Oak Boulevard, Suite 600 Houston TX 77056	Common	02/27/2026	30102	3003393.25
MARK BENDER 2801 Post Oak Boulevard, Suite 600 Houston TX 77056	COMMON	02/20/2026	445	41874.14
MARK BENDER 2801 Post Oak Boulevard, Suite 600 Houston TX 77056	COMMON	02/18/2026	1209	119630.55

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

What trades did Mark Bender report in the Form 144 for WLK?

The filing reports sales of 30,102 shares on 02/27/2026, 1,209 shares on 02/18/2026, and 445 shares on 02/20/2026, with proceeds shown for each transaction.

How much proceeds were reported for the largest sale in the Form 144?

The largest reported sale on 02/27/2026 shows proceeds of $3,003,393.25 for 30,102 shares as listed in the filing excerpt.

Does the filing show the source of the shares sold by Mark Bender?

The excerpt lists grant types and dates (restricted stock and performance shares) with share counts for several grant dates, which are shown in the filing as securities eligible for sale.

Are there other awards listed that could affect future sales by this insider?

Yes; the filing lists awards with grant dates 02/17/2020, 02/14/2021, 02/18/2022, 02/19/2024, and 02/18/2025 and associated share counts in the excerpt.