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Jiang Wenbin

Disclosed activity across 1 company

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21121
SEC CIK
0001872873

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Cytek Biosciences, Inc.CTKB · Entity 5345Director · PRESIDENT AND CEOAugust 18, 2026August 20, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Cytek Biosciences, Inc.

Report date August 18, 2026 · Filed August 20, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect5,561,029 Ending reported balance After 2026-08-18 transaction · row 8
8 source rows · reconciled sequence

Row 1 · 2026-08-18 · Exercise / conversion · Acquired 11,781 · Balance 5,488,984

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Row 2 · 2026-08-18 · Tax withholding · Disposed 2,869 · Balance 5,486,115

F2: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2026 to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Row 3 · 2026-08-18 · Exercise / conversion · Acquired 22,100 · Balance 5,508,215

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Row 4 · 2026-08-18 · Tax withholding · Disposed 5,382 · Balance 5,502,833

F2: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2026 to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Row 5 · 2026-08-18 · Exercise / conversion · Acquired 29,002 · Balance 5,531,835

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Row 6 · 2026-08-18 · Tax withholding · Disposed 7,062 · Balance 5,524,773

F2: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2026 to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Row 7 · 2026-08-18 · Exercise / conversion · Acquired 57,212 · Balance 5,581,985

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Row 8 · 2026-08-18 · Tax withholding · Disposed 20,956 · Balance 5,561,029

F2: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2026 to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect27,494 Reported balance After 2026-08-18 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2026-08-18 · Exercise / conversion · Disposed 11,781 · Balance 27,494

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2024 and each March 10 thereafter.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect139,973 Reported balance After 2026-08-18 transaction · row 10 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 10 · 2026-08-18 · Exercise / conversion · Disposed 22,100 · Balance 139,973

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F4: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2024 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2024 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2024 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect299,694 Reported balance After 2026-08-18 transaction · row 11 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 11 · 2026-08-18 · Exercise / conversion · Disposed 29,002 · Balance 299,694

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F5: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2025 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2025 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2026 and each March 10 thereafter.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect820,054 Reported balance After 2026-08-18 transaction · row 12 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 12 · 2026-08-18 · Exercise / conversion · Disposed 57,212 · Balance 820,054

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F6: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2026 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2026 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2026 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2027 and each March 10 thereafter.

Filing footnotes · ownership attribution and instrument terms

F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F2: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2026 to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

F3: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2024 and each March 10 thereafter.

F4: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2024 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2024 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2024 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter.

F5: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2025 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2025 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2026 and each March 10 thereafter.

F6: The shares underlying the RSU Award shall vest over 4 years, with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2026 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2026 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2026 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2027 and each March 10 thereafter.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 19, 2024 Filed Aug 21, 2024 22:24 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,869 $5.53 $15,865.57
Disclosure

SEC source: 0001415889-24-021858 · form4-08212024_100843.xml · nonDerivative · entry 4

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,340,178

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on August 19, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 22:24 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 11,781 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021858 · form4-08212024_100843.xml · nonDerivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,343,047

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 22:24 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,646 $5.53 $9,102.38
Disclosure

SEC source: 0001415889-24-021858 · form4-08212024_100843.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,331,266

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on August 19, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 22:24 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,758 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021858 · form4-08212024_100843.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,332,912

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 14,733 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · derivative · entry 9

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 338,873

Underlying: Common Stock · 14,733 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F5 · derivative.exercise_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2024 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2024 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2024 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2025 and each March 10 thereafter.

F5 · derivative.expiration_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2024 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2024 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2024 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2025 and each March 10 thereafter.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 7,854 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · derivative · entry 8

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 133,523

Underlying: Common Stock · 7,854 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

F4 · derivative.expiration_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 6,758 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · derivative · entry 7

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,062

Underlying: Common Stock · 6,758 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 3,588 $5.96 $21,384.48
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · nonDerivative · entry 6

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,326,154

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 20, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 14,733 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · nonDerivative · entry 5

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,329,742

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,913 $5.96 $11,401.48
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · nonDerivative · entry 4

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,315,009

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 20, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 7,854 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · nonDerivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,316,922

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,601 $5.96 $9,541.96
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,309,068

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 20, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,758 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014146 · form4-05222024_100540.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,310,669

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
March 11, 2024 Filed Mar 13, 2024 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 15,708 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-007865 · form4-03132024_100343.xml · derivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,377

Underlying: Common Stock · 15,708 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest over four years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest over four years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
March 11, 2024 Filed Mar 13, 2024 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 4,646 $7.22 $33,544.12
Disclosure

SEC source: 0001415889-24-007865 · form4-03132024_100343.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,303,911

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on March 11, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
March 11, 2024 Filed Mar 13, 2024 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 15,708 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-007865 · form4-03132024_100343.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,308,557

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
March 06, 2024 Filed Mar 8, 2024 23:47 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantRestricted Stock Units · Derivative 353,606 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-007437 · form4-03082024_110341.xml · derivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 353,606

Underlying: Common Stock · 353,606 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2024 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2024 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2024 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2025 and each March 10 thereafter.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2024 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2024 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2024 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2025 and each March 10 thereafter.

Read SEC document
March 06, 2024 Filed Mar 8, 2024 23:47 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantEmployee Stock Option (right to buy) · Derivative 526,315 $0.00 Strike: $7.07 $0.00
Disclosure

SEC source: 0001415889-24-007437 · form4-03082024_110341.xml · derivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 526,315

Underlying: Common Stock · 526,315 shares

Expires 2034-03-06

F1 · derivative.exercise_date: The shares subject to the option shall vest over 4 years with 1/48 of the total shares underlying the option vesting on April 6, 2024 and each month thereafter.

Read SEC document
February 20, 2024 Filed Feb 22, 2024 22:46 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 6,758 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-004895 · form4-02222024_100212.xml · derivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,820

Underlying: Common Stock · 6,758 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

Read SEC document
February 20, 2024 Filed Feb 22, 2024 22:46 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,004 $8.38 $16,793.52
Disclosure

SEC source: 0001415889-24-004895 · form4-02222024_100212.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,292,849

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on February 20, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
February 20, 2024 Filed Feb 22, 2024 22:46 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,758 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-004895 · form4-02222024_100212.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,294,853

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
November 18, 2023 Filed Nov 21, 2023 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 11,781 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-056348 · doc4.xml · derivative · entry 6

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,085

Underlying: Common Stock · 11,781 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The shares subject to the RSU Award shall vest over four years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

F4 · derivative.expiration_date: The shares subject to the RSU Award shall vest over four years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
November 18, 2023 Filed Nov 21, 2023 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 6,758 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-056348 · doc4.xml · derivative · entry 5

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,578

Underlying: Common Stock · 6,758 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

Read SEC document
November 18, 2023 Filed Nov 21, 2023 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 3,965 $5.98 $23,710.70
Disclosure

SEC source: 0001209191-23-056348 · doc4.xml · nonDerivative · entry 4

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,288,095

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on November 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
November 18, 2023 Filed Nov 21, 2023 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 11,781 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-23-056348 · doc4.xml · nonDerivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,292,060

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
November 18, 2023 Filed Nov 21, 2023 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,275 $5.98 $13,604.50
Disclosure

SEC source: 0001209191-23-056348 · doc4.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,280,279

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on November 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
November 18, 2023 Filed Nov 21, 2023 22:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,758 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-23-056348 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,282,554

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
November 07, 2023 Filed Nov 8, 2023 23:03 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $4.34 $86,800.00
Disclosure

SEC source: 0001209191-23-054731 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,275,796

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.24 to $4.46, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
October 09, 2023 Filed Oct 11, 2023 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $5.33 $106,600.00
Disclosure

SEC source: 0001209191-23-052657 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,295,796

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.19 to $5.40, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
September 14, 2023 Filed Oct 6, 2023 00:32 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GiftCommon Stock 2,290,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-052263 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,315,796

Read SEC document
September 07, 2023 Filed Sep 8, 2023 23:12 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $6.83 $136,600.00
Disclosure

SEC source: 0001209191-23-048847 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,605,796

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.74 to $6.93, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
August 18, 2023 Filed Aug 22, 2023 00:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 11,781 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-046832 · doc4.xml · derivative · entry 6

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 168,866

Underlying: Common Stock · 11,781 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The shares subject to the RSU Award shall vest over four years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

F4 · derivative.expiration_date: The shares subject to the RSU Award shall vest over four years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
August 18, 2023 Filed Aug 22, 2023 00:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 6,758 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-046832 · doc4.xml · derivative · entry 5

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,336

Underlying: Common Stock · 6,758 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

Read SEC document
August 18, 2023 Filed Aug 22, 2023 00:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 3,965 $8.46 $33,543.90
Disclosure

SEC source: 0001209191-23-046832 · doc4.xml · nonDerivative · entry 4

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,625,796

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
August 18, 2023 Filed Aug 22, 2023 00:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 11,781 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-23-046832 · doc4.xml · nonDerivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,629,761

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
August 18, 2023 Filed Aug 22, 2023 00:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,245 $8.46 $18,992.70
Disclosure

SEC source: 0001209191-23-046832 · doc4.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,617,980

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on August 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
August 18, 2023 Filed Aug 22, 2023 00:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,758 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-23-046832 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,620,225

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
August 07, 2023 Filed Aug 9, 2023 00:30 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $9.04 $180,800.00
Disclosure

SEC source: 0001209191-23-045099 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,613,467

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.81 to $9.19, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
July 07, 2023 Filed Jul 8, 2023 00:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $8.48 $169,600.00
Disclosure

SEC source: 0001209191-23-041867 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,633,467

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.34 to $8.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
June 07, 2023 Filed Jun 7, 2023 22:52 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $8.23 $164,600.00
Disclosure

SEC source: 0001209191-23-035222 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,653,467

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.14 to $8.31, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
May 18, 2023 Filed May 19, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 7,854 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-031262 · doc4.xml · derivative · entry 6

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,647

Underlying: Common Stock · 7,854 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

F4 · derivative.expiration_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
May 18, 2023 Filed May 19, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 6,758 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-031262 · doc4.xml · derivative · entry 5

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,094

Underlying: Common Stock · 6,758 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.

Read SEC document
May 18, 2023 Filed May 19, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,951 $6.69 $19,742.19
Disclosure

SEC source: 0001209191-23-031262 · doc4.xml · nonDerivative · entry 4

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,673,467

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 18, 2023 Filed May 19, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 7,854 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-23-031262 · doc4.xml · nonDerivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,676,418

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
May 18, 2023 Filed May 19, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,633 $6.69 $17,614.77
Disclosure

SEC source: 0001209191-23-031262 · doc4.xml · nonDerivative · entry 2

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,668,564

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 18, 2023 Filed May 19, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,758 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-23-031262 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,671,197

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
May 08, 2023 Filed May 10, 2023 23:08 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $11.55 $231,000.00
Disclosure

SEC source: 0001209191-23-028568 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,664,439

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.34 to $11.76, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
April 10, 2023 Filed Apr 11, 2023 22:04 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $8.88 $177,600.00
Disclosure

SEC source: 0001209191-23-024043 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,684,439

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.71 to $9.01, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
March 07, 2023 Filed Mar 8, 2023 00:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 SaleCommon Stock 20,000 $10.13 $202,600.00
Disclosure

SEC source: 0001209191-23-016979 · doc4.xml · nonDerivative · entry 1

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,704,439

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 to $10.33, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Read SEC document
March 03, 2023 Filed Mar 8, 2023 00:48 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantRestricted Stock Units · Derivative 188,501 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-016979 · doc4.xml · derivative · entry 3

Jiang Wenbin · CIK 0001872873 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 188,501

Underlying: Common Stock · 188,501 shares

Expires not disclosed

F4 · derivative.exercise_price: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.

F5 · derivative.exercise_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

F5 · derivative.expiration_date: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.