XENE Form 144: Proposed sale of 20,000 common shares

XENE filed a Form 144 to sell 20,000 common shares tied to a performance share unit award that vested on 03/09/2026.

Rhea-AI Filing Summary

XENE filed a Form 144 to sell 20,000 common shares tied to a performance share unit award that vested on 03/09/2026.

The filing lists prior proposed or completed sales by Ian Mortimer of 40,000 shares on 01/02/2026 and 270,000 shares on 03/09/2026. The notice names Morgan Stanley Wealth Management Canada Inc. as the broker and shows the securities as Common Shares to be sold on NASDAQ.

Insights

Insider Transactions Analyst

Form 144 shows a proposed sale of 20,000 vested performance shares and recent large dispositions by the same individual.

The filing records a proposed sale of 20,000 common shares tied to a performance share unit vesting on 03/09/2026. It also lists prior transactions: 40,000 shares on 01/02/2026 and 270,000 shares on 03/09/2026.

Cash‑flow treatment and whether these are planned transactions under a trading plan are not stated in the excerpt; subsequent filings or trade reports would show execution details and net proceeds.

Corporate Governance Specialist

The notice reflects routine insider resale disclosure tied to vested compensation rather than a corporate action.

The 144 lists the securities as Common Shares and specifies the reason as "Performance share unit award vesting." That links the sale to compensation vesting rather than a company capital‑markets transaction.

Role of the broker is shown as Morgan Stanley Wealth Management Canada Inc.; any market impact depends on whether the shares are actually sold and on execution details not included here.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does XENE's Form 144 report?

It reports a proposed sale of 20,000 common shares tied to a performance share unit vesting on 03/09/2026. The filing names Morgan Stanley Wealth Management Canada Inc. as the broker and designates the shares for NASDAQ trading.

Who is listed as the selling party in the Form 144 for XENE?

The filing identifies transactions by Ian Mortimer, including prior sales of 40,000 shares on 01/02/2026 and 270,000 shares on 03/09/2026. The current notice covers 20,000 vested shares.

Are the 20,000 shares being sold from compensation or other sources?

They are tied to a performance share unit award vesting on 03/09/2026, indicating the shares originate from vested compensation. The filing text links the sale reason explicitly to that vesting event.

Does the Form 144 state who will receive the proceeds from the sale?

The excerpt does not state proceeds recipients. The filing lists the issuer and broker, but cash‑flow treatment is not specified in the provided content.

Which broker is named for the proposed sale in XENE's Form 144?

Morgan Stanley Wealth Management Canada Inc. is listed as the broker on the Form 144 for the proposed sale of the 20,000 common shares tied to the vesting.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/10/2026 - 08:57 PM Learn about SEC filing dates

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	0001619961
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Xenon Pharmaceuticals Inc.
SEC File Number	001-36687
Address of Issuer	3650 Gilmore Way Burnaby BRITISH COLUMBIA, CANADA V5G 4W8
Phone	(604)-484-3300
Name of Person for Whose Account the Securities are To Be Sold	IAN MORTIMER
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	Officer
Relationship to Issuer	Director

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 Shares	Morgan Stanley Wealth Management Canada Inc. Suite 1500, 600 - 3 Avenue SW Calgary Z4 T2P 0G5	11269	677357	83190316	03/10/2026	NASDAQ

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 Shares	03/09/2026	Performance share unit award vesting	Issuer			20000	03/09/2026	N/A

* 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
Ian Mortimer 3650 Gilmore Way Burnaby A1 V5G 4W8	Common Shares	01/02/2026	40000	1777166
Ian Mortimer 3650 Gilmore Way Burnaby A1 V5G 4W8	Common Shares	03/09/2026	270000	16289196

144: Remarks and Signature

Remarks	The Common Shares reported on this Form 144 were obtained via the vesting of a performance share unit award on March 9, 2026, and are being sold pursuant to a Rule 10b5-1 trading arrangement in the form of a durable sell-to-cover instruction.
Date of Notice	03/10/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/03/2025
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	/s/ Ian Mortimer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)