Key facts
- This page summarizes Don M. Hardison's Form 4 filing for Cytek Biosciences, Inc. (CTKB).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 09 Jun 2025, 17:08.
Don M. Hardison - 05 Jun 2025 Form 4 Insider Report for Cytek Biosciences, Inc. (CTKB)
- Reporting relationship
- Director
- Issuer ticker
- CTKB
- Reported as of
- 05 Jun 2025
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 09 Jun 2025, 17:08:59 UTC
- Prior SEC filing
- 07 Jun 2024
- Next SEC filing
- 10 Apr 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Valerie Barnett, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Don M. Hardison filed Form 4 for Cytek Biosciences, Inc. (CTKB) on 09 Jun 2025.
Change
- Previous filing in this sequence was filed on 07 Jun 2024.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001209588
Primary reporting owner
HARDISON DON M
- Relationship
- Director
- Address
- C/O CYTEK BIOSCIENCES, INC., 47215 LAKEVIEW BOULEVARD, FREMONT
- Signature
- /s/ Valerie Barnett, Attorney-in-Fact
- Signature date
- 09 Jun 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CTKB
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +15,706
- Change %
- Price
- Shares after
- 15,706
- Date
- 05 Jun 2025
- Ownership
- Direct
- Footnotes
- F1
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CTKB
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -15,706
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 05 Jun 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 15,706
- Exercise price
- Footnotes
- F1, F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.
Footnote F2
100% of the shares subject to the RSU Award vested on June 5, 2025.