Barnett Valerie 4
4 · Cytek Biosciences, Inc. · Filed Mar 12, 2026
Research Summary
AI-generated summary of this filing
Cytek (CTKB) Chief Legal Officer Valerie Barnett Receives RSUs, Exercises Options
What Happened
- Valerie Barnett, Chief Legal Officer of Cytek Biosciences (CTKB), received two RSU grants totaling 346,567 restricted stock units (120,114 + 226,453) on March 10, 2026 and also exercised/converted 29,722 derivative shares (4,908 + 10,313 + 14,501). To satisfy tax withholding obligations arising from vesting/conversion, 11,748 shares were surrendered (withheld) at $4.23 per share, totaling $49,694. The RSU awards are reported as derivative awards (A) and the conversions/exercises are reported as code M; the share withholding is reported as code F.
Key Details
- Transaction date: March 10, 2026; Form 4 filed March 12, 2026 (timely).
- RSU grants: 120,114 and 226,453 RSUs (total 346,567) reported as awards (no cash paid).
- Conversions/exercises: 4,908; 10,313; 14,501 shares (total 29,722).
- Tax withholding: 1,761 + 4,247 + 5,740 = 11,748 shares withheld at $4.23/share = $49,694 surrendered to the issuer to cover taxes.
- Shares owned after the transactions: not stated in the provided filing excerpt.
- Relevant footnotes: F1 clarifies each RSU converts to one share; F2 confirms the withheld shares were surrendered to satisfy tax withholding; F3–F7 describe multi-year vesting schedules for the options and RSUs (4-year vesting with specified monthly or annual tranches).
Context
- This was not an open‑market purchase or sale for cash; Barnett received equity awards (RSUs) and converted/exercised derivatives. The withheld shares represent a typical "sell-to-cover" or share-withholding to pay taxes, not a separate market sale signaling intent.
- For retail investors: awards and routine tax withholding are common compensation mechanics and do not by themselves indicate a bullish or bearish view. Exercises/conversions plus withholding typically reflect vesting or option exercise events rather than discretionary trading.
Insider Transaction Report
Form 4
Barnett Valerie
CHIEF LEGAL OFFICER
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-03-10+4,908→ 121,370 total - Tax Payment
Common Stock
[F2]2026-03-10$4.23/sh−1,761$7,449→ 119,609 total - Exercise/Conversion
Common Stock
[F1]2026-03-10+10,313→ 129,922 total - Tax Payment
Common Stock
[F2]2026-03-10$4.23/sh−4,247$17,965→ 125,675 total - Exercise/Conversion
Common Stock
[F1]2026-03-10+14,501→ 140,176 total - Tax Payment
Common Stock
[F2]2026-03-10$4.23/sh−5,740$24,280→ 134,436 total - Award
Employee Stock Option (right to buy)
[F3]2026-03-10+120,114→ 120,114 totalExercise: $4.23Exp: 2036-03-09→ Common Stock (120,114 underlying) - Award
Restricted Stock Units
[F1][F4]2026-03-10+226,453→ 226,453 total→ Common Stock (226,453 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F5]2026-03-10−4,908→ 14,734 total→ Common Stock (4,908 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F6]2026-03-10−10,313→ 61,884 total→ Common Stock (10,313 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F7]2026-03-10−14,501→ 130,512 total→ Common Stock (14,501 underlying)
Footnotes (7)
- [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 March 10, 2026, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.
- [F3]The shares subject to the stock option shall vest over 4 years with 1/48 of the total shares underlying the stock option vesting on April 10, 2026 and each month 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, 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 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.
- [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, 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.
- [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, 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.
- [F7]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.
Signature
/s/ Valerie Barnett|2026-03-12