Zymeworks insider plans sale of 6,120 shares

Zymeworks Inc. insider Mark Hollywood has filed a Form 144 notice to sell common stock.

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

Rhea-AI Filing Summary

Zymeworks Inc. insider Mark Hollywood has filed a Form 144 notice to sell common stock. The filing covers a planned sale of 6,120 shares of common stock through Morgan Stanley Wealth Management Canada on or about 01/12/2026, with an indicated aggregate market value of $141,800.40. The class is listed on the Nasdaq, and there were 74,836,534 shares of this class outstanding.

The shares to be sold are tied to equity compensation, as 17,666 shares of common stock were acquired on 01/12/2026 through the vesting of restricted stock units granted by the issuer. The filer also reported that, during the prior three months, Mark Hollywood sold 8,911 shares of common stock on 01/05/2026 for gross proceeds of $223,638.47. By signing the notice, the seller represents that they are not aware of undisclosed material adverse information about Zymeworks’ current or prospective operations.

FAQ

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

What does ZYME's latest Form 144 filing disclose?

It discloses that Mark Hollywood intends to sell 6,120 shares of Zymeworks Inc. common stock under Rule 144, with an aggregate market value of $141,800.40 and an approximate sale date of 01/12/2026.

How many ZYME shares are outstanding in this Form 144?

The filing states that 74,836,534 shares of Zymeworks Inc. common stock were outstanding for the class of securities referenced in the planned Rule 144 sale.

How were the Zymeworks (ZYME) shares being sold acquired?

The filing notes that 17,666 shares of common stock were acquired on 01/12/2026 through the vesting of restricted stock units issued by Zymeworks Inc., with the nature of payment described as vesting of an award.

Has this ZYME insider sold shares in the past three months?

Yes. The document reports that Mark Hollywood sold 8,911 shares of Zymeworks common stock on 01/05/2026 for $223,638.47 in gross proceeds during the past three months.

Which broker is handling the planned ZYME share sale in the Form 144?

The planned Rule 144 sale of Zymeworks common stock is listed as being handled by Morgan Stanley Wealth Management Canada, with the securities to be sold on the Nasdaq exchange.

What representation does the seller make in this Zymeworks Form 144?

By signing the notice, the seller represents that they do not know any material adverse information about Zymeworks Inc.’s current or prospective operations that has not been publicly disclosed, consistent with Rule 144 requirements.

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	0002104446
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	Mark Hollywood
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	6120	141800.40	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
Mark Hollywood c/o Zymeworks Inc. 108 Patriot Drive, Suite A Middletown DE 19709	Common Stock	01/05/2026	8911	223638.47

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