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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1937653	Zymeworks Inc.	ZYME	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1567045	Kenneth Galbraith	C/O Zymeworks Inc. 108 Patriot Drive, Suite A Middletown DE 19709	Chair & Ceo	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2025-01-06	47,666	$0.00	71,428	No	4	M	Direct
Common Stock	Disposition	2025-01-06	23,885	$14.92	47,543	No	4	S	Direct
Common Stock	Acquisiton	2025-01-06	66,666	$0.00	114,209	No	4	M	Direct
Common Stock	Disposition	2025-01-06	33,406	$14.92	80,803	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Restricted Stock Unit	Disposition	2025-01-06	47,666	$0.00	47,666	$0.00
Common Stock	Restricted Stock Unit	Disposition	2025-01-06	66,666	$0.00	66,666	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
47,668			No	4	M	Direct
133,334			No	4	M	Direct

Footnotes

Represents shares of common stock issued upon vesting of one third of the restricted stock units ("RSUs") granted on January 5, 2023.
Represents shares of common stock sold to cover tax withholding obligations and other applicable fees in connection with the vesting of RSUs pursuant to mandatory "sell to cover" provisions contained in the Reporting Person's applicable RSU grant agreement, and does not represent a discretionary sale by the Reporting Person. The Reporting Person did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes and fees.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $14.44 to $15.14, inclusive. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.
Represents shares of common stock issued upon vesting of one third of the RSUs granted on January 5, 2024.
Each RSU represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock.
The RSUS were granted on January 5, 2023 and vest in three equal annual installments beginning on the first anniversary of January 5, 2023.
The RSUS were granted on January 5, 2024 and vest in three equal annual installments beginning on the first anniversary of January 5, 2024.