Zymeworks CFO receives new option and RSU grants

Zymeworks Inc. reported that EVP and Chief Financial Officer Kristin Stafford received new equity compensation awards.

Rhea-AI Filing Summary

Zymeworks Inc. reported that EVP and Chief Financial Officer Kristin Stafford received new equity compensation awards. She was granted stock options for 178,000 shares of common stock at an exercise price of $25.84 per share, expiring on April 5, 2036. These options vest 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments thereafter.

Stafford also received two restricted stock unit grants. One award covers 119,000 RSUs, vesting in four equal annual installments beginning on the first anniversary of the grant date. The other covers 50,000 RSUs, vesting in three equal annual installments starting on the first anniversary. Each RSU converts into one share of common stock upon vesting, and the filing shows no open-market purchases or sales.

Insider Trade Summary

Grant/Award: 347,000 shares

Grant/Award 3 txns

Insider Stafford Kristin

Role EVP, Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	178,000	$0.00	$0.00
Grant/Award	Restricted Stock Unit	119,000	$0.00	$0.00
Grant/Award	Restricted Stock Unit	50,000	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 178,000 contracts (Direct); Restricted Stock Unit — 169,000 contracts (Direct)

Footnotes (4)

1. F1. Stock options vest as follows: (i) 25% of underlying shares of common stock on first anniversary of grant date and (ii) remainder of underlying shares of common stock in 36 equal monthly installments on last day of month following first anniversary of grant date.
2. F2. Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock.
3. F3. RSUs vest in four equal annual installments beginning on first anniversary of grant date.
4. F4. RSUs vest in three equal annual installments beginning on first anniversary of grant date.

Key Figures

Stock options granted: 178,000 shares Option exercise price: $25.84/share Option expiration: April 5, 2036 +5 more

8 metrics

Stock options granted 178,000 shares Right to buy common stock at $25.84, granted April 6, 2026

Option exercise price $25.84/share Exercise price for 178,000 stock options

Option expiration April 5, 2036 Expiration date for 178,000 stock options

RSU grant 1 119,000 units RSUs vest in four equal annual installments from first anniversary

RSU grant 2 50,000 units RSUs vest in three equal annual installments from first anniversary

Options held after grant 178,000 options Total stock options owned directly following the grant

RSUs held after grant 1 119,000 RSUs Total units from four-year vesting award after grant

RSUs held after grant 2 50,000 RSUs Total units from three-year vesting award after grant

Key Terms

Stock Option (Right to Buy), Restricted Stock Unit, RSU, vest, +1 more

5 terms

Stock Option (Right to Buy) financial

"security_title: "Stock Option (Right to Buy)""

Restricted Stock Unit financial

"security_title: "Restricted Stock Unit""

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

RSU financial

"Each restricted stock unit ("RSU") represents the contingent right to receive"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

vest financial

"RSUs vest in four equal annual installments beginning on first anniversary of grant date."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

grant date financial

"on first anniversary of grant date and (ii) remainder of underlying shares"

The grant date is the day a company formally gives an employee or contractor the right to receive stock-based compensation, such as stock options or restricted shares. It matters to investors because it fixes key terms—like the price, the start of the ownership clock, and when the award will affect the company’s financial statements and share count—so it can influence dilution, reported expenses, and potential future selling pressure.

FAQ

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

What equity awards did Zymeworks (ZYME) CFO Kristin Stafford receive?

Kristin Stafford received a grant of 178,000 stock options at $25.84 and two RSU awards of 119,000 and 50,000 units. These represent non-cash, long-term equity incentives that convert into common shares over multi-year vesting schedules.

How do Kristin Stafford’s 178,000 Zymeworks stock options vest?

The 178,000 stock options vest 25% on the first anniversary of the grant date, then the remaining 75% in 36 equal monthly installments. This structure encourages longer-term retention by spreading the benefit over several years after the initial cliff vest.

What are the terms of Kristin Stafford’s 119,000 RSU award at Zymeworks (ZYME)?

The 119,000 restricted stock units vest in four equal annual installments beginning on the first anniversary of the grant date. Each vested RSU delivers one share of common stock, aligning compensation with the company’s long-term share performance over four years.

How does the 50,000 RSU grant to Zymeworks CFO vest?

The 50,000 restricted stock units vest in three equal annual installments starting on the first anniversary of the grant date. As each tranche vests, it converts into common shares, providing an additional three-year equity incentive for the executive.

Did Zymeworks CFO buy or sell any common shares in this Form 4 filing?

The filing shows only grant-type transactions coded as awards, not open-market buys or sells. Stafford acquired stock options and RSUs as compensation, with no reported purchases or sales of common stock for cash in this particular disclosure.

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

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Accepted by SEC EDGAR 04/07/2026 - 02:24 PM Learn about SEC filing dates

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).

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^*

Stafford Kristin

(Last) (First) (Middle)

C/O ZYMEWORKS INC.

108 PATRIOT DRIVE, SUITE A

(Street)

MIDDLETOWN DELAWARE 19709

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Zymeworks Inc. [ ZYME ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/06/2026

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

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

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

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

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
Stock Option (Right to Buy)	$25.84	04/06/2026		A		178,000		(1)	04/05/2036	Common Stock	178,000	$0.00	178,000	D
Restricted Stock Unit	(2)	04/06/2026		A		119,000		(3)	(3)	Common Stock	119,000	$0.00	119,000	D
Restricted Stock Unit	(2)	04/06/2026		A		50,000		(4)	(4)	Common Stock	50,000	$0.00	50,000	D

Explanation of Responses:

1. Stock options vest as follows: (i) 25% of underlying shares of common stock on first anniversary of grant date and (ii) remainder of underlying shares of common stock in 36 equal monthly installments on last day of month following first anniversary of grant date.

2. Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock.

3. RSUs vest in four equal annual installments beginning on first anniversary of grant date.

4. RSUs vest in three equal annual installments beginning on first anniversary of grant date.

	/s/ Catherine Graham, Attorney-in-Fact	04/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)