Zymeworks insider plans sale of 9,310 shares

Zymeworks Inc. insider Jeffrey T L Smith has filed a notice of proposed sale of common stock under Rule 144.

Accepted by SEC EDGAR 01/12/2026 - 05:00 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Zymeworks Inc. insider Jeffrey T L Smith has filed a notice of proposed sale of common stock under Rule 144. The filing indicates an intent to sell 9,310 shares of common stock through Morgan Stanley Wealth Management Canada on the Nasdaq, with an aggregate market value of 215,712.70. The filing notes that 74,836,534 shares of common stock were outstanding.

The securities to be sold were acquired on 01/12/2026 through the vesting of 17,666 restricted stock units granted by the issuer, with the nature of payment described as a vesting of award. During the prior three months, Smith sold 10,538 shares of common stock on 01/05/2026 for gross proceeds of 264,471.13. By signing, the seller represents that he is not aware of undisclosed material adverse information about the company.

FAQ

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

What does the ZYME Form 144 filing disclose about planned share sales?

The filing shows that Jeffrey T L Smith plans to sell 9,310 shares of Zymeworks Inc. common stock through Morgan Stanley Wealth Management Canada on the Nasdaq, with an aggregate market value of 215,712.70.

How many Zymeworks (ZYME) shares are outstanding in this Form 144?

The Form 144 states that 74,836,534 shares of Zymeworks common stock were outstanding in connection with this planned sale.

How did the insider acquire the Zymeworks shares being sold under Rule 144?

The securities to be sold were acquired on 01/12/2026 through the vesting of 17,666 restricted stock units granted by Zymeworks, with the consideration described as a vesting of award.

Which broker will handle the ZYME insider sale disclosed in the Form 144?

The planned sale of 9,310 shares of Zymeworks common stock will be handled by Morgan Stanley Wealth Management Canada, with the securities listed for trading on the Nasdaq exchange.

What prior Zymeworks share sales by this insider are disclosed in the past 3 months?

The filing reports that Jeffrey T L Smith sold 10,538 shares of Zymeworks common stock on 01/05/2026, generating gross proceeds of 264,471.13 during the past three months.

What representation does the insider make in the ZYME Form 144 notice?

By signing the notice, the person for whose account the securities are to be sold represents that he does not know any material adverse information about Zymeworks’ current or prospective operations that has not been publicly disclosed.

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

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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	0001604800
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	Zymeworks Inc.
SEC File Number	001-41535
Address of Issuer	108 Patriot Drive Suite A Middletown DELAWARE 19709
Phone	302-274-8744
Name of Person for Whose Account the Securities are To Be Sold	Jeffrey T L Smith
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

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 Stock	Morgan Stanley Wealth Management Canada 140 4th Ave. SW, Suite 2740 Calgary A0 T2P 3N3	9310	215712.70	74836534	01/12/2026	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 Stock	01/12/2026	Vesting of Restricted Stock Units	Issuer			17666	01/12/2026	Vesting of Award

* 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
Jeffrey T L Smith c/o Zymeworks Inc. 108 Patriot Drive, Suite A Middletown DE 19709	Common Stock	01/05/2026	10538	264471.13

144: Remarks and Signature

Remarks	The shares of common stock to be sold represent shares to be sold to cover tax withholding obligations and other fees in connection with the vesting of RSUs pursuant to mandatory "sell to cover" provisions contained in the applicable RSU grant agreement.
Date of Notice	01/12/2026
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/ Jeffrey T L Smith
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)