STOCK TITAN

[Form 3] Zymeworks Inc. Initial Statement of Beneficial Ownership

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
3
Rhea-AI Filing Summary

Zymeworks director Gregory Austin Ciongoli filed an initial Form 3 reporting beneficial ownership in the issuer. He directly owns 73,500 shares of common stock and, as manager of 4 Arrows Holdings, LLC, exercises sole voting and dispositive power over an additional 5,000 shares while disclaiming beneficial ownership except for his pecuniary interest. The Form 3 lists the event date as 08/10/2025 and includes a signature by an attorney-in-fact dated 08/12/2025.

Il direttore di Zymeworks, Gregory Austin Ciongoli, ha presentato un Form 3 iniziale per dichiarare la titolarità beneficiaria nell'emittente. Possiede direttamente 73,500 azioni ordinarie e, in qualità di amministratore di 4 Arrows Holdings, LLC, esercita il pieno diritto di voto e di disposizione su ulteriori 5,000 azioni, pur rinunciando a rivendicare la titolarità beneficiaria ad eccezione del suo interesse pecuniario. Il Form 3 indica la data dell'evento come 08/10/2025 e include la firma di un procuratore datata 08/12/2025.

El director de Zymeworks, Gregory Austin Ciongoli, presentó un Formulario 3 inicial para informar la propiedad beneficiaria en la emisora. Posee directamente 73,500 acciones ordinarias y, como administrador de 4 Arrows Holdings, LLC, ejerce el único poder de voto y de disposición sobre otras 5,000 acciones, renunciando a la titularidad beneficiaria salvo por su interés pecuniario. El Formulario 3 registra la fecha del hecho como 08/10/2025 e incluye la firma de un apoderado fechada 08/12/2025.

Zymeworks 이사 Gregory Austin Ciongoli는 발행회사에 대한 수익적 소유권을 보고하는 초기 Form 3을 제출했습니다. 그는 직접 73,500주의 보통주를 보유하고 있으며, 4 Arrows Holdings, LLC의 관리자로서 추가 5,000주에 대해 단독 의결권과 처분권을 행사하되 금전적 이익을 제외한 수익적 소유권은 부인합니다. Form 3에는 사건일을 08/10/2025로 기재하고 08/12/2025자 대리인의 서명이 포함되어 있습니다.

Le directeur de Zymeworks, Gregory Austin Ciongoli, a déposé un formulaire 3 initial déclarant une propriété bénéficiaire dans l'émetteur. Il détient directement 73,500 actions ordinaires et, en tant que gérant de 4 Arrows Holdings, LLC, exerce le pouvoir exclusif de vote et d'aliénation sur 5,000 actions supplémentaires, tout en déclinant la qualité de propriétaire bénéficiaire hormis son intérêt pécuniaire. Le formulaire 3 indique la date de l'événement comme 08/10/2025 et comporte la signature d'un mandataire datée 08/12/2025.

Der Direktor von Zymeworks, Gregory Austin Ciongoli, reichte ein initiales Formular 3 ein, um eine wirtschaftliche Beteiligung am Emittenten zu melden. Er besitzt unmittelbar 73,500 Stammaktien und übt als Geschäftsführer von 4 Arrows Holdings, LLC alleiniges Stimm- und Verfügungsrecht über weitere 5,000 Aktien aus, wobei er die wirtschaftliche Eigentümerschaft mit Ausnahme seines finanziellen Interesses bestreitet. Das Formular 3 nennt das Ereignisdatum als 08/10/2025 und enthält eine Unterschrift eines Bevollmächtigten vom 08/12/2025.

Positive
  • Director reported direct ownership of 73,500 common shares
  • Disclosure of indirect holdings via 4 Arrows Holdings, LLC (5,000 shares) with sole voting and dispositive power
  • No derivative securities were reported in Table II
Negative
  • None.

Insights

TL;DR: Routine initial insider disclosure showing direct and limited indirect holdings, with voting power noted.

The filing is a standard initial Form 3 for a company director. It reports 73,500 shares held directly and 5,000 shares held in an entity (4 Arrows Holdings, LLC) for which the reporting person is manager and exercises sole voting and dispositive power. The reporting person explicitly disclaims beneficial ownership of the LLC shares except for any pecuniary interest. This disclosure documents ownership and control facts required under Section 16.

TL;DR: No derivatives reported; filing records basic insider holdings and control details without material transaction activity.

Table II indicates no derivative securities are beneficially owned. The submission provides clear counts for common stock holdings and the nature of indirect ownership, and it is signed via attorney-in-fact. As an initial statement, it notifies the market of insider holdings but does not disclose purchases, sales, or option grants.

Il direttore di Zymeworks, Gregory Austin Ciongoli, ha presentato un Form 3 iniziale per dichiarare la titolarità beneficiaria nell'emittente. Possiede direttamente 73,500 azioni ordinarie e, in qualità di amministratore di 4 Arrows Holdings, LLC, esercita il pieno diritto di voto e di disposizione su ulteriori 5,000 azioni, pur rinunciando a rivendicare la titolarità beneficiaria ad eccezione del suo interesse pecuniario. Il Form 3 indica la data dell'evento come 08/10/2025 e include la firma di un procuratore datata 08/12/2025.

El director de Zymeworks, Gregory Austin Ciongoli, presentó un Formulario 3 inicial para informar la propiedad beneficiaria en la emisora. Posee directamente 73,500 acciones ordinarias y, como administrador de 4 Arrows Holdings, LLC, ejerce el único poder de voto y de disposición sobre otras 5,000 acciones, renunciando a la titularidad beneficiaria salvo por su interés pecuniario. El Formulario 3 registra la fecha del hecho como 08/10/2025 e incluye la firma de un apoderado fechada 08/12/2025.

Zymeworks 이사 Gregory Austin Ciongoli는 발행회사에 대한 수익적 소유권을 보고하는 초기 Form 3을 제출했습니다. 그는 직접 73,500주의 보통주를 보유하고 있으며, 4 Arrows Holdings, LLC의 관리자로서 추가 5,000주에 대해 단독 의결권과 처분권을 행사하되 금전적 이익을 제외한 수익적 소유권은 부인합니다. Form 3에는 사건일을 08/10/2025로 기재하고 08/12/2025자 대리인의 서명이 포함되어 있습니다.

Le directeur de Zymeworks, Gregory Austin Ciongoli, a déposé un formulaire 3 initial déclarant une propriété bénéficiaire dans l'émetteur. Il détient directement 73,500 actions ordinaires et, en tant que gérant de 4 Arrows Holdings, LLC, exerce le pouvoir exclusif de vote et d'aliénation sur 5,000 actions supplémentaires, tout en déclinant la qualité de propriétaire bénéficiaire hormis son intérêt pécuniaire. Le formulaire 3 indique la date de l'événement comme 08/10/2025 et comporte la signature d'un mandataire datée 08/12/2025.

Der Direktor von Zymeworks, Gregory Austin Ciongoli, reichte ein initiales Formular 3 ein, um eine wirtschaftliche Beteiligung am Emittenten zu melden. Er besitzt unmittelbar 73,500 Stammaktien und übt als Geschäftsführer von 4 Arrows Holdings, LLC alleiniges Stimm- und Verfügungsrecht über weitere 5,000 Aktien aus, wobei er die wirtschaftliche Eigentümerschaft mit Ausnahme seines finanziellen Interesses bestreitet. Das Formular 3 nennt das Ereignisdatum als 08/10/2025 und enthält eine Unterschrift eines Bevollmächtigten vom 08/12/2025.

SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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: 3235-0104
Estimated average burden
hours per response: 0.5
1. Name and Address of Reporting Person*
Ciongoli Gregory Austin

(Last) (First) (Middle)
C/O ZYMEWORKS INC.
108 PATRIOT DRIVE, SUITE A

(Street)
MIDDLETOWN DE 19709

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
08/10/2025
3. Issuer Name and Ticker or Trading Symbol
Zymeworks Inc. [ ZYME ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 73,500 D
Common Stock 5,000 I See footnote(1)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
No securities are beneficially owned (2) (2) Not applicable 0 (2) D
Explanation of Responses:
1. Represents shares held by 4 Arrows Holdings, LLC, for which the reporting person is the manager. The reporting person exercises sole voting and dispositive power over these shares and disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
2. Not applicable.
Remarks:
Exhibit List - Exhibit 24 - Power of Attorney
/s/ Daniel Dex, Attorney-in-Fact 08/12/2025
** 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 5 (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.

FAQ

What did the ZYME Form 3 filed by Gregory Austin Ciongoli report?

The Form 3 reports 73,500 shares held directly and 5,000 shares held indirectly through 4 Arrows Holdings, LLC; relationship: Director.

Were any derivative securities reported on the Form 3 for ZYME?

No. Table II states there are no derivative securities beneficially owned.

What is the nature of the indirect ownership reported?

The 5,000 shares are held by 4 Arrows Holdings, LLC; the reporting person is the manager and exercises sole voting and dispositive power but disclaims beneficial ownership except for pecuniary interest.

When is the event date and who signed the Form 3?

The event requiring the statement is dated 08/10/2025 and the form is signed by /s/ Daniel Dex, Attorney-in-Fact with the signature date 08/12/2025.

What relationship to Zymeworks does the reporting person have?

The reporting person is listed as a Director of Zymeworks Inc.
Zymeworks

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