TapewireFind a company

person · Reporting owner

Busque Philippe

Disclosed activity across 1 company

Tapewire entity
45567
SEC CIK
0001991396

Export transaction history ↓

Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Cytek Biosciences, Inc.CTKB · Entity 5345SVP, GLOBAL SALES AND SERVICESMay 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-derivativeDirect43,466 Ending reported balance After 2026-05-18 transaction · row 8
8 source rows · reconciled sequence

Row 1 · 2026-05-18 · Exercise / conversion · Acquired 1,024 · Balance 36,711

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 263 · Balance 36,448

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 1,473 · Balance 37,921

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 378 · Balance 37,543

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 2,416 · Balance 39,959

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 620 · Balance 39,339

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 5,551 · Balance 44,890

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 1,424 · Balance 43,466

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 securityDirect5,641 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 1,024 · Balance 5,641

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 four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect16,209 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 1,473 · Balance 16,209

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 securityDirect41,089 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 2,416 · Balance 41,089

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 securityDirect127,675 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 5,551 · Balance 127,675

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 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 four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

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 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

JSON API
Reset

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
March 10, 2025 Filed Mar 12, 2025 21:53 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,946 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-007890 · form4-03122025_090353.xml · derivative · entry 6

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,521

Underlying: Common Stock · 2,946 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 21:53 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,049 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-007890 · form4-03122025_090353.xml · derivative · entry 5

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,810

Underlying: Common Stock · 2,049 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 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest over four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

Read SEC document
March 10, 2025 Filed Mar 12, 2025 21:53 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 1,148 $4.36 $5,005.28
Disclosure

SEC source: 0001415889-25-007890 · form4-03122025_090353.xml · nonDerivative · entry 4

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,919

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 21:53 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,946 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-007890 · form4-03122025_090353.xml · nonDerivative · entry 3

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,067

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 21:53 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 799 $4.36 $3,483.64
Disclosure

SEC source: 0001415889-25-007890 · form4-03122025_090353.xml · nonDerivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,121

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 21:53 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,049 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-007890 · form4-03122025_090353.xml · nonDerivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,920

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 22:52 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantRestricted Stock Units · Derivative 58,004 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-007280 · form4-03062025_100338.xml · derivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,004

Underlying: Common Stock · 58,004 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 22:52 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantEmployee Stock Option (right to buy) · Derivative 91,911 $0.00 Strike: $4.31 $0.00
Disclosure

SEC source: 0001415889-25-007280 · form4-03062025_100338.xml · derivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,911

Underlying: Common Stock · 91,911 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
November 18, 2024 Filed Nov 20, 2024 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,210 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027369 · form4-11202024_111129.xml · derivative · entry 6

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,467

Underlying: Common Stock · 2,210 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
November 18, 2024 Filed Nov 20, 2024 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 1,536 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027369 · form4-11202024_111129.xml · derivative · entry 5

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,859

Underlying: Common Stock · 1,536 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 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest over four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 861 $6.03 $5,191.83
Disclosure

SEC source: 0001415889-24-027369 · form4-11202024_111129.xml · nonDerivative · entry 4

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,871

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 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,210 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-027369 · form4-11202024_111129.xml · nonDerivative · entry 3

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,732

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 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 599 $6.03 $3,611.97
Disclosure

SEC source: 0001415889-24-027369 · form4-11202024_111129.xml · nonDerivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,522

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 23:25 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 1,536 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-027369 · form4-11202024_111129.xml · nonDerivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,121

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 22:15 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 2,210 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-021854 · form4-08212024_100852.xml · derivative · entry 6

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,677

Underlying: Common Stock · 2,210 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
August 19, 2024 Filed Aug 21, 2024 22:15 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 1,536 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-021854 · form4-08212024_100852.xml · derivative · entry 5

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,395

Underlying: Common Stock · 1,536 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 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

F3 · derivative.expiration_date: The shares subject to the RSU Award shall vest over four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 22:15 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 861 $5.53 $4,761.33
Disclosure

SEC source: 0001415889-24-021854 · form4-08212024_100852.xml · nonDerivative · entry 4

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,585

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 22:15 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 2,210 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021854 · form4-08212024_100852.xml · nonDerivative · entry 3

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,446

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 22:15 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 599 $5.53 $3,312.47
Disclosure

SEC source: 0001415889-24-021854 · form4-08212024_100852.xml · nonDerivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,236

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 22:15 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 1,536 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-021854 · form4-08212024_100852.xml · nonDerivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,835

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 22:28 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 1,473 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014144 · form4-05222024_100536.xml · derivative · entry 6

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,887

Underlying: Common Stock · 1,473 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 each 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 each March 10, 2025 and each March 10 thereafter.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:28 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 6,659 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-014144 · form4-05222024_100536.xml · derivative · entry 5

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,931

Underlying: Common Stock · 6,659 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 Restricted Stock Units (the "RSU Award") shall vest over four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

F3 · derivative.expiration_date: The shares subject to the Restricted Stock Units (the "RSU Award") shall vest over four years with 13/48 of the total shares underlying the RSU Award vesting on May 18, 2024; 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; 4/48 of the total shares underlying the RSU Award vesting on March 10, 2025 and each March 10 thereafter; and 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter.

Read SEC document
May 20, 2024 Filed May 22, 2024 22:28 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 574 $5.96 $3,421.04
Disclosure

SEC source: 0001415889-24-014144 · form4-05222024_100536.xml · nonDerivative · entry 4

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,299

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 22:28 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 1,473 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014144 · form4-05222024_100536.xml · nonDerivative · entry 3

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,873

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 22:28 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,594 $5.96 $15,460.24
Disclosure

SEC source: 0001415889-24-014144 · form4-05222024_100536.xml · nonDerivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,400

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 22:28 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 6,659 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-014144 · form4-05222024_100536.xml · nonDerivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,994

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 20, 2024 Filed Mar 21, 2024 22:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionRestricted Stock Units · Derivative 5,464 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-008881 · form4-03212024_100334.xml · derivative · entry 3

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,464 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 vested on March 20, 2024.

F3 · derivative.expiration_date: The shares subject to the RSU Award vested on March 20, 2024.

Read SEC document
March 20, 2024 Filed Mar 21, 2024 22:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Tax withholdingCommon Stock 2,129 $6.70 $14,264.30
Disclosure

SEC source: 0001415889-24-008881 · form4-03212024_100334.xml · nonDerivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,335

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

Read SEC document
March 20, 2024 Filed Mar 21, 2024 22:19 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 Exercise / conversionCommon Stock 5,464 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-24-008881 · form4-03212024_100334.xml · nonDerivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,464

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 23:46 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantRestricted Stock Units · Derivative 35,360 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-007436 · form4-03082024_110313.xml · derivative · entry 2

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,360

Underlying: Common Stock · 35,360 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 23:46 UTC Cytek Biosciences, Inc. CTKB · Entity 5345 GrantEmployee Stock Option (right to buy) · Derivative 52,631 $0.00 Strike: $7.07 $0.00
Disclosure

SEC source: 0001415889-24-007436 · form4-03082024_110313.xml · derivative · entry 1

Busque Philippe · CIK 0001991396 · SVP, GLOBAL SALES AND SERVICES

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,631

Underlying: Common Stock · 52,631 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

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