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Barnett Valerie

Disclosed activity across 1 company

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45566
SEC CIK
0001873091

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Cytek Biosciences, Inc.CTKB · Entity 5345CHIEF LEGAL OFFICERMay 18, 2026May 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 May 18, 2026 · Filed May 20, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect150,012 Ending reported balance After 2026-05-18 transaction · row 8
8 source rows · reconciled sequence

Row 1 · 2026-05-18 · Exercise / conversion · Acquired 2,454 · Balance 136,890

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

Row 2 · 2026-05-18 · Tax withholding · Disposed 881 · Balance 136,009

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

Row 3 · 2026-05-18 · Exercise / conversion · Acquired 5,156 · Balance 141,165

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

Row 4 · 2026-05-18 · Tax withholding · Disposed 1,850 · Balance 139,315

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

Row 5 · 2026-05-18 · Exercise / conversion · Acquired 7,250 · Balance 146,565

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

Row 6 · 2026-05-18 · Tax withholding · Disposed 2,602 · Balance 143,963

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

Row 7 · 2026-05-18 · Exercise / conversion · Acquired 9,435 · Balance 153,398

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

Row 8 · 2026-05-18 · Tax withholding · Disposed 3,386 · Balance 150,012

F2: Represents the number of shares withheld by and surrendered to the Issuer on May 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 securityDirect12,280 Reported balance After 2026-05-18 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2026-05-18 · Exercise / conversion · Disposed 2,454 · Balance 12,280

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 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 on March 10, 2024 and each March 10 thereafter, until fully vested.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect56,728 Reported balance After 2026-05-18 transaction · row 10 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 10 · 2026-05-18 · Exercise / conversion · Disposed 5,156 · Balance 56,728

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 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 on March 10, 2025 and each March 10 thereafter.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect123,262 Reported balance After 2026-05-18 transaction · row 11 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 11 · 2026-05-18 · Exercise / conversion · Disposed 7,250 · Balance 123,262

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 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, 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, until fully vested.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect217,018 Reported balance After 2026-05-18 transaction · row 12 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 12 · 2026-05-18 · Exercise / conversion · Disposed 9,435 · Balance 217,018

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 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, 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, until fully vested.

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 May 18, 2026, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

F3: 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 on March 10, 2024 and each March 10 thereafter, until fully vested.

F4: 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 on March 10, 2025 and each March 10 thereafter.

F5: 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, 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, until fully vested.

F6: 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, 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, until fully vested.

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
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 7,250 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · derivative · entry 12

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166,763

Underlying: Common Stock · 7,250 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.

F6 · 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, 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 each March 10, 2026 and each March 10 thereafter, until fully vested.

F6 · 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, 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 each March 10, 2026 and each March 10 thereafter, until fully vested.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 5,156 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · derivative · entry 11

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,667

Underlying: Common Stock · 5,156 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 on 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 on March 10, 2025 and each March 10 thereafter.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,454 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · derivative · entry 10

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,004

Underlying: Common Stock · 2,454 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 on 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 on March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,016 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · derivative · entry 9

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,378

Underlying: Common Stock · 2,016 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 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,824 $2.69 $7,596.56
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 8

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,673

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 19, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 7,250 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 7

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,497

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 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,009 $2.69 $5,404.21
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 6

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,247

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 19, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 5,156 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 5

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,256

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 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 956 $2.69 $2,571.64
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 4

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,100

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 19, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,454 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 3

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,056

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 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 786 $2.69 $2,114.34
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,602

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on May 19, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
May 19, 2025 Filed May 21, 2025 21:54 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,016 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013980 · form4-05212025_090505.xml · nonDerivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,388

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 10, 2025 Filed Mar 12, 2025 21:55 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 10,313 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-007891 · form4-03122025_090346.xml · derivative · entry 6

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,823

Underlying: Common Stock · 10,313 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, 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.

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, 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.

Read SEC document
March 10, 2025 Filed Mar 12, 2025 21:55 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 4,908 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-007891 · form4-03122025_090346.xml · derivative · entry 5

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,458

Underlying: Common Stock · 4,908 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 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, until fully vested.

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, 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, until fully vested.

Read SEC document
March 10, 2025 Filed Mar 12, 2025 21:55 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 4,017 $4.36 $17,514.12
Disclosure

SEC source: 0001415889-25-007891 · form4-03122025_090346.xml · nonDerivative · entry 4

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,372

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on March 10, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
March 10, 2025 Filed Mar 12, 2025 21:55 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 10,313 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-007891 · form4-03122025_090346.xml · nonDerivative · entry 3

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,389

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 10, 2025 Filed Mar 12, 2025 21:55 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,912 $4.36 $8,336.32
Disclosure

SEC source: 0001415889-25-007891 · form4-03122025_090346.xml · nonDerivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,076

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on March 10, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
March 10, 2025 Filed Mar 12, 2025 21:55 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 4,908 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-007891 · form4-03122025_090346.xml · nonDerivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,988

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 04, 2025 Filed Mar 6, 2025 22:50 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantRestricted Stock Units · Derivative 174,013 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-007279 · form4-03062025_100358.xml · derivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 174,013

Underlying: Common Stock · 174,013 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, 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 each March 10, 2026 and each March 10 thereafter, until fully vested.

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, 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 each March 10, 2026 and each March 10 thereafter, until fully vested.

Read SEC document
March 04, 2025 Filed Mar 6, 2025 22:50 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantEmployee Stock Option (right to buy) · Derivative 275,735 $0.00 Strike: $4.31 $0.00
Disclosure

SEC source: 0001415889-25-007279 · form4-03062025_100358.xml · derivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275,735

Underlying: Common Stock · 275,735 shares

Expires 2035-03-04

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 4, 2025 and each month thereafter until fully vested.

Read SEC document
February 18, 2025 Filed Feb 20, 2025 23:12 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,016 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-004928 · form4-02202025_110252.xml · derivative · entry 3

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,394

Underlying: Common Stock · 2,016 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 18, 2025 Filed Feb 20, 2025 23:12 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 786 $5.31 $4,173.66
Disclosure

SEC source: 0001415889-25-004928 · form4-02202025_110252.xml · nonDerivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,080

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on February 18, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
February 18, 2025 Filed Feb 20, 2025 23:12 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,016 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-004928 · form4-02202025_110252.xml · nonDerivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,866

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, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 7,735 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · derivative · entry 9

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,136

Underlying: Common Stock · 7,735 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 on 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 on March 10, 2025 and each March 10 thereafter.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 3,681 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · derivative · entry 8

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,366

Underlying: Common Stock · 3,681 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 on 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 on March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,016 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · derivative · entry 7

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,410

Underlying: Common Stock · 2,016 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, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,603 $6.03 $15,696.09
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · nonDerivative · entry 6

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,850

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on November 18, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 7,735 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · nonDerivative · entry 5

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,453

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, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,235 $6.03 $7,447.05
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · nonDerivative · entry 4

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,718

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on November 18, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 3,681 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · nonDerivative · entry 3

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,953

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, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 661 $6.03 $3,985.83
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · nonDerivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,272

F2 · shares: Represents the number of shares withheld by and surrendered to the Issuer on November 18, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 23:23 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,016 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-027368 · form4-11202024_111121.xml · nonDerivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,933

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 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 7,735 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · derivative · entry 9

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,871

Underlying: Common Stock · 7,735 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.

F6 · 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 on March 10, 2025 and each March 10 thereafter.

F6 · 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 on March 10, 2025 and each March 10 thereafter.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 3,681 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · derivative · entry 8

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,047

Underlying: Common Stock · 3,681 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, 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, 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 on March 10, 2024 and each March 10 thereafter, until fully vested.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,016 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · derivative · entry 7

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,426

Underlying: Common Stock · 2,016 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 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.

F4 · 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 19, 2024 Filed Aug 21, 2024 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,826 $5.53 $15,627.78
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · nonDerivative · entry 6

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,917

F3 · 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 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 7,735 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · nonDerivative · entry 5

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,743

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 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,434 $5.53 $7,930.02
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · nonDerivative · entry 4

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,008

F3 · 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 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 3,681 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · nonDerivative · entry 3

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,442

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 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 786 $5.53 $4,346.58
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · nonDerivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,761

F3 · 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 22:26 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,016 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021860 · form4-08212024_100843.xml · nonDerivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,547

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.

F2 · balance_after: Includes 3,487 shares acquired by the Reporting Person under the Issuer's 2021 Employee Stock Purchase Plan on May 31, 2024.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 5,156 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · derivative · entry 9

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,606

Underlying: Common Stock · 5,156 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 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,454 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · derivative · entry 8

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,728

Underlying: Common Stock · 2,454 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 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,016 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · derivative · entry 7

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,442

Underlying: Common Stock · 2,016 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 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,009 $5.96 $11,973.64
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · nonDerivative · entry 6

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,044

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.

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May 20, 2024 Filed May 22, 2024 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 5,156 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · nonDerivative · entry 5

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,053

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.

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May 20, 2024 Filed May 22, 2024 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 956 $5.96 $5,697.76
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · nonDerivative · entry 4

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,897

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.

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May 20, 2024 Filed May 22, 2024 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,454 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · nonDerivative · entry 3

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,853

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.

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May 20, 2024 Filed May 22, 2024 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 786 $5.96 $4,684.56
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · nonDerivative · entry 2

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,399

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 22:31 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,016 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014145 · form4-05222024_100555.xml · nonDerivative · entry 1

Barnett Valerie · CIK 0001873091 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,185

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

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