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[Form 4] Cytek Biosciences, Inc. Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4
Rhea-AI Filing Summary

Cytek Biosciences (CTKB) filed a Form 4 disclosing new equity awards to independent director Richard Chin on 18 June 2025. The filing shows 73,289 Restricted Stock Units (RSUs) and 39,062 non-qualified stock options granted at an exercise price of $3.07 per share. No shares were sold.

The RSUs convert 1-for-1 into common stock once vested. Vesting spans three years, with 2/36 of the award vesting on 18 Aug 2025 and 3/36 vesting on each scheduled quarterly date thereafter until fully vested in August 2028. The stock options vest monthly at a rate of 1/36 over the same three-year period and expire on 17 Jun 2035, potentially adding another 39,062 shares to the float if exercised.

Following the grant, Chin holds all 112,351 derivative securities directly. The transaction represents routine director compensation and introduces a modest dilutive overhang but aligns the director’s incentives with shareholder value.

Cytek Biosciences (CTKB) ha depositato un Modulo 4 che rivela nuove assegnazioni di azioni all'indipendente direttore Richard Chin il 18 giugno 2025. Il documento mostra 73.289 Unità Azionarie Vincolate (RSU) e 39.062 opzioni azionarie non qualificate con un prezzo di esercizio di 3,07$ per azione. Non sono state vendute azioni.

Le RSU si convertono 1 a 1 in azioni ordinarie una volta maturate. Il vesting si estende su tre anni, con 2/36 dell'assegnazione che matura il 18 agosto 2025 e 3/36 che maturano in ciascuna data trimestrale programmata fino al completamento ad agosto 2028. Le opzioni azionarie maturano mensilmente al ritmo di 1/36 nello stesso periodo di tre anni e scadono il 17 giugno 2035, potenzialmente aggiungendo altre 39.062 azioni in circolazione se esercitate.

Dopo l'assegnazione, Chin detiene direttamente tutte le 112.351 azioni derivate. L'operazione rappresenta una normale compensazione per il direttore e introduce un modesto effetto diluitivo, ma allinea gli incentivi del direttore al valore per gli azionisti.

Cytek Biosciences (CTKB) presentó un Formulario 4 revelando nuevas concesiones de acciones al director independiente Richard Chin el 18 de junio de 2025. El documento muestra 73,289 Unidades de Acciones Restringidas (RSU) y 39,062 opciones sobre acciones no calificadas otorgadas a un precio de ejercicio de $3.07 por acción. No se vendieron acciones.

Las RSU se convierten 1 a 1 en acciones ordinarias una vez que se consolidan. La consolidación se extiende durante tres años, con 2/36 de la concesión consolidándose el 18 de agosto de 2025 y 3/36 consolidándose en cada fecha trimestral programada hasta que esté completamente consolidada en agosto de 2028. Las opciones sobre acciones se consolidan mensualmente a una tasa de 1/36 durante el mismo período de tres años y vencen el 17 de junio de 2035, lo que podría agregar otras 39,062 acciones en circulación si se ejercen.

Tras la concesión, Chin posee directamente las 112,351 valores derivados. La transacción representa una compensación rutinaria para el director e introduce una modesta dilución, pero alinea los incentivos del director con el valor para los accionistas.

Cytek Biosciences(CTKB)는 2025년 6월 18일 독립 이사 Richard Chin에게 새로운 주식 보상을 공개하는 Form 4를 제출했습니다. 제출 서류에는 73,289개의 제한 주식 단위(RSUs)39,062개의 비자격 스톡 옵션이 주당 $3.07의 행사가격으로 부여된 내용이 포함되어 있습니다. 주식은 판매되지 않았습니다.

RSU는 베스팅 후 1대1로 보통주로 전환됩니다. 베스팅 기간은 3년이며, 2025년 8월 18일에 수여분의 2/36이 베스팅되고 이후 예정된 분기별 날짜마다 3/36씩 베스팅되어 2028년 8월에 완전히 베스팅됩니다. 스톡 옵션은 같은 3년 기간 동안 매월 1/36씩 베스팅되며, 2035년 6월 17일에 만료됩니다. 만약 행사된다면 추가로 39,062주의 주식이 유통 주식 수에 포함될 수 있습니다.

부여 후, Chin은 모든 112,351개의 파생 증권을 직접 보유합니다. 이번 거래는 이사 보상으로서 일상적인 것이며, 약간의 희석 효과를 가져오지만 이사의 인센티브를 주주 가치와 일치시키는 역할을 합니다.

Cytek Biosciences (CTKB) a déposé un formulaire 4 révélant de nouvelles attributions d’actions à l’administrateur indépendant Richard Chin le 18 juin 2025. Le dépôt indique 73 289 unités d’actions restreintes (RSU) et 39 062 options d’achat d’actions non qualifiées accordées à un prix d’exercice de 3,07 $ par action. Aucune action n’a été vendue.

Les RSU se convertissent en actions ordinaires à raison de 1 pour 1 une fois acquises. L’acquisition s’étale sur trois ans, avec 2/36 de la dotation acquise le 18 août 2025 et 3/36 acquises à chaque date trimestrielle programmée par la suite jusqu’à l’acquisition complète en août 2028. Les options d’achat d’actions s’acquièrent mensuellement à raison de 1/36 sur la même période de trois ans et expirent le 17 juin 2035, ce qui pourrait ajouter 39 062 actions supplémentaires au flottant si elles sont exercées.

Après l’attribution, Chin détient directement les 112 351 titres dérivés. La transaction représente une rémunération courante pour le directeur et introduit une légère dilution, mais aligne les incitations du directeur sur la valeur pour les actionnaires.

Cytek Biosciences (CTKB) reichte am 18. Juni 2025 ein Formular 4 ein, das neue Aktienzuteilungen an den unabhängigen Direktor Richard Chin offenlegt. Die Einreichung zeigt 73.289 Restricted Stock Units (RSUs) und 39.062 nicht qualifizierte Aktienoptionen mit einem Ausübungspreis von 3,07 $ pro Aktie. Es wurden keine Aktien verkauft.

Die RSUs wandeln sich nach der Vesting-Periode 1:1 in Stammaktien um. Die Vesting-Periode erstreckt sich über drei Jahre, wobei 2/36 der Zuteilung am 18. August 2025 vesten und danach jeweils 3/36 an den geplanten vierteljährlichen Terminen bis zum vollständigen Vesting im August 2028. Die Aktienoptionen vesten monatlich mit einer Rate von 1/36 über denselben Dreijahreszeitraum und verfallen am 17. Juni 2035, was bei Ausübung weitere 39.062 Aktien zum Streubesitz hinzufügen könnte.

Nach der Zuteilung hält Chin alle 112.351 derivativen Wertpapiere direkt. Die Transaktion stellt eine routinemäßige Vergütung für Direktoren dar und bringt eine moderate Verwässerung mit sich, richtet jedoch die Anreize des Direktors auf den Aktionärswert aus.

Positive
  • No insider selling: the filing records only grants, signaling confidence rather than distribution.
  • Incentive alignment: multi-year vesting ties director compensation to long-term share performance, viewed as a governance positive.
Negative
  • Potential dilution: full vesting and exercise would add 112,351 shares to the float, though impact is immaterial relative to total shares outstanding.

Insights

TL;DR: Routine director equity grant; no sales; modest potential dilution, positive alignment.

The Form 4 reflects standard board remuneration: 73,289 RSUs and 39,062 options priced at $3.07. Vesting schedules reduce near-term share supply risk, and there is no insider selling signal. Assuming CTKB’s current basic share count (~>100 million), the additional 112k shares equate to <0.2%, thus immaterial to valuation. Nonetheless, equity-based pay ties director incentives to long-term performance, a mild governance positive. Investors should factor in small dilution in DCF/EP estimates but otherwise view the filing as neutral-to-slightly constructive.

Cytek Biosciences (CTKB) ha depositato un Modulo 4 che rivela nuove assegnazioni di azioni all'indipendente direttore Richard Chin il 18 giugno 2025. Il documento mostra 73.289 Unità Azionarie Vincolate (RSU) e 39.062 opzioni azionarie non qualificate con un prezzo di esercizio di 3,07$ per azione. Non sono state vendute azioni.

Le RSU si convertono 1 a 1 in azioni ordinarie una volta maturate. Il vesting si estende su tre anni, con 2/36 dell'assegnazione che matura il 18 agosto 2025 e 3/36 che maturano in ciascuna data trimestrale programmata fino al completamento ad agosto 2028. Le opzioni azionarie maturano mensilmente al ritmo di 1/36 nello stesso periodo di tre anni e scadono il 17 giugno 2035, potenzialmente aggiungendo altre 39.062 azioni in circolazione se esercitate.

Dopo l'assegnazione, Chin detiene direttamente tutte le 112.351 azioni derivate. L'operazione rappresenta una normale compensazione per il direttore e introduce un modesto effetto diluitivo, ma allinea gli incentivi del direttore al valore per gli azionisti.

Cytek Biosciences (CTKB) presentó un Formulario 4 revelando nuevas concesiones de acciones al director independiente Richard Chin el 18 de junio de 2025. El documento muestra 73,289 Unidades de Acciones Restringidas (RSU) y 39,062 opciones sobre acciones no calificadas otorgadas a un precio de ejercicio de $3.07 por acción. No se vendieron acciones.

Las RSU se convierten 1 a 1 en acciones ordinarias una vez que se consolidan. La consolidación se extiende durante tres años, con 2/36 de la concesión consolidándose el 18 de agosto de 2025 y 3/36 consolidándose en cada fecha trimestral programada hasta que esté completamente consolidada en agosto de 2028. Las opciones sobre acciones se consolidan mensualmente a una tasa de 1/36 durante el mismo período de tres años y vencen el 17 de junio de 2035, lo que podría agregar otras 39,062 acciones en circulación si se ejercen.

Tras la concesión, Chin posee directamente las 112,351 valores derivados. La transacción representa una compensación rutinaria para el director e introduce una modesta dilución, pero alinea los incentivos del director con el valor para los accionistas.

Cytek Biosciences(CTKB)는 2025년 6월 18일 독립 이사 Richard Chin에게 새로운 주식 보상을 공개하는 Form 4를 제출했습니다. 제출 서류에는 73,289개의 제한 주식 단위(RSUs)39,062개의 비자격 스톡 옵션이 주당 $3.07의 행사가격으로 부여된 내용이 포함되어 있습니다. 주식은 판매되지 않았습니다.

RSU는 베스팅 후 1대1로 보통주로 전환됩니다. 베스팅 기간은 3년이며, 2025년 8월 18일에 수여분의 2/36이 베스팅되고 이후 예정된 분기별 날짜마다 3/36씩 베스팅되어 2028년 8월에 완전히 베스팅됩니다. 스톡 옵션은 같은 3년 기간 동안 매월 1/36씩 베스팅되며, 2035년 6월 17일에 만료됩니다. 만약 행사된다면 추가로 39,062주의 주식이 유통 주식 수에 포함될 수 있습니다.

부여 후, Chin은 모든 112,351개의 파생 증권을 직접 보유합니다. 이번 거래는 이사 보상으로서 일상적인 것이며, 약간의 희석 효과를 가져오지만 이사의 인센티브를 주주 가치와 일치시키는 역할을 합니다.

Cytek Biosciences (CTKB) a déposé un formulaire 4 révélant de nouvelles attributions d’actions à l’administrateur indépendant Richard Chin le 18 juin 2025. Le dépôt indique 73 289 unités d’actions restreintes (RSU) et 39 062 options d’achat d’actions non qualifiées accordées à un prix d’exercice de 3,07 $ par action. Aucune action n’a été vendue.

Les RSU se convertissent en actions ordinaires à raison de 1 pour 1 une fois acquises. L’acquisition s’étale sur trois ans, avec 2/36 de la dotation acquise le 18 août 2025 et 3/36 acquises à chaque date trimestrielle programmée par la suite jusqu’à l’acquisition complète en août 2028. Les options d’achat d’actions s’acquièrent mensuellement à raison de 1/36 sur la même période de trois ans et expirent le 17 juin 2035, ce qui pourrait ajouter 39 062 actions supplémentaires au flottant si elles sont exercées.

Après l’attribution, Chin détient directement les 112 351 titres dérivés. La transaction représente une rémunération courante pour le directeur et introduit une légère dilution, mais aligne les incitations du directeur sur la valeur pour les actionnaires.

Cytek Biosciences (CTKB) reichte am 18. Juni 2025 ein Formular 4 ein, das neue Aktienzuteilungen an den unabhängigen Direktor Richard Chin offenlegt. Die Einreichung zeigt 73.289 Restricted Stock Units (RSUs) und 39.062 nicht qualifizierte Aktienoptionen mit einem Ausübungspreis von 3,07 $ pro Aktie. Es wurden keine Aktien verkauft.

Die RSUs wandeln sich nach der Vesting-Periode 1:1 in Stammaktien um. Die Vesting-Periode erstreckt sich über drei Jahre, wobei 2/36 der Zuteilung am 18. August 2025 vesten und danach jeweils 3/36 an den geplanten vierteljährlichen Terminen bis zum vollständigen Vesting im August 2028. Die Aktienoptionen vesten monatlich mit einer Rate von 1/36 über denselben Dreijahreszeitraum und verfallen am 17. Juni 2035, was bei Ausübung weitere 39.062 Aktien zum Streubesitz hinzufügen könnte.

Nach der Zuteilung hält Chin alle 112.351 derivativen Wertpapiere direkt. Die Transaktion stellt eine routinemäßige Vergütung für Direktoren dar und bringt eine moderate Verwässerung mit sich, richtet jedoch die Anreize des Direktors auf den Aktionärswert aus.

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*
Chin Richard

(Last) (First) (Middle)
C/O CYTEK BIOSCIENCES, INC.
47215 LAKEVIEW BOULEVARD

(Street)
FREMONT CA 94538

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Cytek Biosciences, Inc. [ CTKB ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
06/18/2025
4. 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 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
Restricted Stock Units (1) 06/18/2025 A 73,289 (2) (2) Common Stock 73,289 $0 73,289 D
Director Stock Option (right to buy) $3.07 06/18/2025 A 39,062 (3) 06/17/2035 Common Stock 39,062 $0 39,062 D
Explanation of Responses:
1. Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.
2. 2/36 of the total shares subject to the RSU Award shall vest on August 18, 2025; 3/36 of the total shares subject to the RSU Award shall vest on November 18, 2025 and each November 18 thereafter; 3/36 of the total shares underlying the RSU Award shall vest on March 10, 2026 and each March 10 thereafter; 3/36 of the total shares underlying the RSU Award vesting shall vest on May 18, 2026 and each May 18 thereafter; and 3/36 of the total shares underlying the RSU Award shall vest on August 18, 2026 and each August 18 thereafter, until fully vested.
3. 1/36 of the total shares subject to the option shall vest monthly over 3 years following the grant date of June 18, 2025.
/s/ Valerie Barnett, Attorney-in-Fact 06/20/2025
** 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 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.

FAQ

What did CTKB disclose in the latest Form 4?

Director Richard Chin received 73,289 RSUs and 39,062 stock options on 18 Jun 2025; no shares were sold.

What is the exercise price of the new CTKB director options?

The options carry an exercise price of $3.07 per share.

When do the CTKB RSUs for Richard Chin vest?

Vesting begins 18 Aug 2025 (2/36) with subsequent 3/36 tranches on specified quarterly dates until August 2028.

How many shares could be added to CTKB’s float from this grant?

A maximum of 112,351 shares (RSUs + options) if fully vested and exercised.

Did the CTKB director sell any shares in this filing?

No. The Form 4 reports only acquisitions via equity awards; there were no dispositions.
Cytek Biosciences, Inc.

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