McCombe William D. 4
4 · Cytek Biosciences, Inc. · Filed Nov 20, 2025
Insider Transaction Report
Form 4
McCombe William D.
Chief Financial Officer
Transactions
- Exercise/Conversion
Restricted Stock Units
2025-11-18−6,320→ 63,209 total→ Common Stock (6,320 underlying) - Exercise/Conversion
Common Stock
2025-11-18+6,320→ 73,891 total - Tax Payment
Common Stock
2025-11-18$5.53/sh−2,032$11,237→ 71,859 total - Exercise/Conversion
Restricted Stock Units
2025-11-18−13,051→ 174,014 total→ Common Stock (13,051 underlying) - Exercise/Conversion
Common Stock
2025-11-18+13,051→ 84,910 total - Tax Payment
Common Stock
2025-11-18$5.53/sh−4,196$23,204→ 80,714 total
Footnotes (4)
- [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 November 18, 2025, 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 12/48 of the total shares underlying the RSU Award vesting on May 18, 2025; 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 3/48 of the total shares underlying the RSU Award vesting on March 10, 2026 and each March 10 thereafter; and 3/48 of the total shares underlying the RSU Award vesting on May 18, 2026 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, 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.