STOCK TITAN

Zymeworks (NASDAQ: ZYME) awards options, RSUs and PSUs to EVP

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Zymeworks Inc. granted equity-based compensation to EVP and Chief Business Officer Scott Platshon. He received stock options for 70,000 shares of common stock at an exercise price of $27.35 per share, expiring on April 8, 2036, which vest 25% after one year and monthly thereafter.

Platshon was also granted 47,000 restricted stock units that vest in four equal annual installments, each RSU delivering one share of common stock upon vesting. In addition, he received 76,000 performance stock units, representing the maximum number that may be earned based on cumulative total shareholder return goals over a three-year performance period ending on January 12, 2029, with 50%–200% of a 38,000-unit target earnable depending on performance.

Positive

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Insider Platshon Scott
Role EVP, Chief Business Officer
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 70,000 $0.00 --
Grant/Award Restricted Stock Unit 47,000 $0.00 --
Grant/Award Performance Stock Unit 76,000 $0.00 --
Holdings After Transaction: Stock Option (Right to Buy) — 70,000 shares (Direct); Restricted Stock Unit — 47,000 shares (Direct); Performance Stock Unit — 76,000 shares (Direct)
Footnotes (1)
  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. Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. RSUs vest in four equal annual installments beginning on first anniversary of grant date. Each performance restricted stock unit ("PSU") represents a contingent right to receive one share of common stock. The amount reported is the maximum number of PSUs that may be earned upon achievement of certain cumulative total shareholder return ("TSR") goals over a three-year performance period ending on January 12, 2029 (or in some cases at earlier times). Between 50% and 200% of the target number of 38,000 PSUs ("Target Number") may be earned upon achievement of such TSR goals. 50% of the Target Number may be earned upon achievement of relative TSR goals if the Company's TSR for the performance period equals or exceeds a prespecified percentile for the Nasdaq Biotech Index. (Continued from footnote 4) The PSUs will only vest at the end of the three-year performance period if the Reporting Person's service to the Company continues through such time that the board of directors of the Company certifies the achievement of TSR goals, except in certain limited cases (such as if service to the Company is terminated by the Company without cause or in case of a change of control).
Stock options granted 70,000 options Grant on April 9, 2026 to EVP Chief Business Officer
Option exercise price $27.35 per share Exercise price for 70,000 stock options
Option expiration April 8, 2036 Expiration date of stock option grant
Restricted stock units granted 47,000 RSUs RSU award vesting in four equal annual installments
Maximum performance stock units 76,000 PSUs Maximum PSUs earnable based on three-year TSR goals
PSU target amount 38,000 PSUs Target number with 50%–200% earnable based on TSR
PSU performance period end January 12, 2029 End of three-year TSR performance period
Restricted Stock Unit financial
"Each restricted stock unit ("RSU") represents the contingent right to receive..."
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.
Performance Stock Unit financial
"Each performance restricted stock unit ("PSU") represents a contingent right..."
A performance stock unit is a type of reward companies give to employees, usually managers, that depends on how well the company performs over time. If the company hits specific goals, the employee earns shares of stock, like earning a prize for reaching certain levels in a game. It motivates employees to work hard because their rewards are tied to the company's success.
total shareholder return financial
"upon achievement of certain cumulative total shareholder return ("TSR") goals..."
Total shareholder return is the overall gain an investor gets from owning a stock, combining changes in the share price plus any cash payouts like dividends, and assuming those payouts are reinvested in more shares. Investors use it like a single score that shows the true return on their investment—similar to checking both the growth of a savings account and the interest earned—to compare how well different companies or investments perform over time.
Nasdaq Biotech Index financial
"if the Company's TSR for the performance period equals or exceeds a prespecified percentile for the Nasdaq Biotech Index."
A Nasdaq biotech index is a stock market benchmark that tracks the performance of biotech and pharmaceutical companies listed on the Nasdaq exchange. Think of it as a thermometer for the biotech sector: it gives investors a single number showing how the group is doing, helps compare a company or fund against the sector, and guides decisions about sector exposure, risk and diversification because biotech stocks often move together and can be more volatile than the broader market.
change of control financial
"except in certain limited cases (such as if service...or in case of a change of control)."
A change of control occurs when the ownership or management of a company shifts significantly, such as through a sale, merger, or acquisition, resulting in new leadership or ownership structure. This change can impact the company's direction and decision-making, which is important for investors because it may affect the company's stability, strategy, and future prospects.
SEC Form 4
FORM 4UNITED 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*
Platshon Scott

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP, Chief Business Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/09/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$27.3504/09/2026A70,000 (1)04/08/2036Common Stock70,000$0.0070,000D
Restricted Stock Unit(2)04/09/2026A47,000 (3) (3)Common Stock47,000$0.0047,000D
Performance Stock Unit(4)(5)04/09/2026A76,000 (4)(5) (4)(5)Common Stock76,000$0.0076,000D
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. Each performance restricted stock unit ("PSU") represents a contingent right to receive one share of common stock. The amount reported is the maximum number of PSUs that may be earned upon achievement of certain cumulative total shareholder return ("TSR") goals over a three-year performance period ending on January 12, 2029 (or in some cases at earlier times). Between 50% and 200% of the target number of 38,000 PSUs ("Target Number") may be earned upon achievement of such TSR goals. 50% of the Target Number may be earned upon achievement of relative TSR goals if the Company's TSR for the performance period equals or exceeds a prespecified percentile for the Nasdaq Biotech Index.
5. (Continued from footnote 4) The PSUs will only vest at the end of the three-year performance period if the Reporting Person's service to the Company continues through such time that the board of directors of the Company certifies the achievement of TSR goals, except in certain limited cases (such as if service to the Company is terminated by the Company without cause or in case of a change of control).
/s/ Catherine Graham, Attorney-in-Fact04/10/2026
** Signature of Reporting PersonDate
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)

FAQ

What equity awards did ZYME executive Scott Platshon receive?

Scott Platshon received stock options, restricted stock units, and performance stock units as compensation. The awards cover 70,000 stock options, 47,000 RSUs, and a maximum of 76,000 PSUs tied to performance goals, all linked to Zymeworks common stock.

How do Scott Platshon’s new ZYME stock options vest and when do they expire?

Platshon’s 70,000 Zymeworks stock options vest 25% on the first anniversary of the grant date, with the remaining shares vesting in 36 equal monthly installments. These options carry a $27.35 exercise price and expire on April 8, 2036, if not exercised earlier.

What are the vesting terms for Scott Platshon’s ZYME restricted stock units?

Platshon’s 47,000 restricted stock units vest in four equal annual installments beginning on the first anniversary of the grant date. Each vested RSU converts into one share of Zymeworks common stock, providing time-based equity compensation tied to continued service with the company.

How are Scott Platshon’s ZYME performance stock units earned?

Platshon’s 76,000 performance stock units represent the maximum earnable based on cumulative total shareholder return goals over a three-year period ending January 12, 2029. Between 50% and 200% of a 38,000-unit target may vest depending on Zymeworks’ TSR performance against specified benchmarks.

What performance period applies to ZYME’s performance stock units granted to Scott Platshon?

The performance stock units use a three-year performance period ending January 12, 2029. Vesting depends on achieving cumulative total shareholder return targets, including relative TSR versus the Nasdaq Biotech Index, with final vesting only after board certification of results, subject to continued service.

How is Zymeworks’ Nasdaq Biotech Index performance used in Platshon’s PSU award?

The PSU award allows 50% of the 38,000-unit target to be earned if Zymeworks’ total shareholder return meets or exceeds a prespecified percentile of the Nasdaq Biotech Index. This relative TSR test helps link Platshon’s equity payout to Zymeworks’ stock performance versus biotech peers.