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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1403752	Zymeworks Inc.	ZYME	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1761853	Ali Tehrani	C/O Zymeworks Inc. 1385 West 8Th Avenue, Suite 540 Vancouver A1 V6H 3V9	Chief Executive Officer	Yes	Yes	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 Shares	Acquisiton	2021-07-15	3,800	$4.27	264,125	No	4	M	Direct
Common Shares	Disposition	2021-07-15	3,800	$36.00	260,325	No	4	S	Direct
Common Shares	Acquisiton	2021-07-16	41,191	$4.26	301,516	No	4	M	Direct
Common Shares	Disposition	2021-07-16	41,191	$36.00	260,325	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 Shares	Stock Option (Right to Buy)	Disposition	2021-07-15	3,800	$0.00	3,800	$4.27
Common Shares	Stock Option (Right to Buy)	Disposition	2021-07-16	41,191	$0.00	41,191	$4.26

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
41,191	2013-01-01	2022-01-01	No	4	M	Direct
0	2013-01-01	2022-01-01	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Shares	55,511	Indirect	Held by spouse

Footnotes

Pursuant to a 10b5-1 plan entered into May 13, 2021.
The exercise price of the stock option is CAD5.37. The U.S. dollar equivalent of the exercise price is $4.2713 using the Bank of Canada exchange rate for July 15, 2021 (CAD1.00 = $0.7954).
All shares were sold at $36.00 per share.
The exercise price of the stock option is CAD5.37. The U.S. dollar equivalent of the exercise price is $4.2643 using the Bank of Canada exchange rate for July 16, 2021 (CAD1.00 = $0.7941).
Stock options vest as follows: (i) 25% of underlying shares on first anniversary of grant date of January 1, 2012 and (ii) remainder of underlying shares in 36 equal monthly installments on the last day of month following first anniversary of grant date.