[Form 4] Xenon Pharmaceuticals Inc. Insider Trading Activity

Rhea-AI Filing Summary

Xenon Pharmaceuticals Inc. Chief Medical Officer Christopher John Kenney reported routine equity compensation activity and a small open-market sale. On March 12, 2026, he exercised 3,750 Restricted Share Units at $0.00 per share, converting them into 3,750 Common Shares that had vested from a grant made on March 12, 2025.

The RSU award vests in four equal annual installments starting on March 12, 2026, and after this vesting he held 11,250 Restricted Share Units directly. On March 13, 2026, he sold 1,410 Common Shares at an average price of $55.225 per share under a Rule 10b5-1 durable sell-to-cover instruction adopted on December 3, 2025, solely to satisfy tax withholding obligations related to the RSU vesting. Following these transactions, he directly owned 7,069 Common Shares.

Insider Trade Summary 10b5-1

Net Seller: 1,410 shares ($77,867)

Net Sell 3 txns

Insider KENNEY CHRISTOPHER JOHN

Role Chief Medical Officer

Sold 1,410 shs ($78K)

Type	Security	Shares	Price	Value
Sale	Common Shares	1,410	$55.225	$78K
Exercise	Restricted Share Units	3,750	$0.00	--
Exercise	Common Shares	3,750	$0.00	--

Holdings After Transaction: Common Shares — 7,069 shares (Direct); Restricted Share Units — 11,250 shares (Direct)

Footnotes (1)

1. Represents shares earned and vested under a restricted share unit ("RSU") award granted to the reporting person on March 12, 2025. The RSU award vests 25% on each of the first four anniversaries of the date of grant, beginning on March 12, 2026. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading arrangement, in the form of a durable sell-to-cover instruction, adopted by the reporting person on December 3, 2025, solely to satisfy tax withholding obligations related to the vesting of RSUs granted on March 12, 2025.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

KENNEY CHRISTOPHER JOHN

(Last) (First) (Middle)

3650 GILMORE WAY

(Street)

BURNABY A1 V5G 4W8

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Xenon Pharmaceuticals Inc. [ XENE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Medical Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Shares	03/12/2026		M		3,750(1)	A	(1)	8,479	D
Common Shares	03/13/2026		S(2)		1,410	D	$55.225	7,069	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share Units	(1)	03/12/2026		M			3,750	(1)	(1)	Common Shares	3,750	$0	11,250	D

Explanation of Responses:

1. Represents shares earned and vested under a restricted share unit ("RSU") award granted to the reporting person on March 12, 2025. The RSU award vests 25% on each of the first four anniversaries of the date of grant, beginning on March 12, 2026.

2. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading arrangement, in the form of a durable sell-to-cover instruction, adopted by the reporting person on December 3, 2025, solely to satisfy tax withholding obligations related to the vesting of RSUs granted on March 12, 2025.

	/s/ Nathaniel Adams, Attorney-in-fact	03/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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