Arkolith/Insider Trading/CTKB/Form 4

Barnett Valerie

CHIEF LEGAL OFFICERCytek Biosciences, Inc. (CTKB) · full profile →Form 4 · filed Mar 12, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
11
6 non-derivative · 5 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 10, 2026Option exercise(M)5K——121K
Mar 10, 2026Tax withholding(F)2K$4.23$7K120K
Mar 10, 2026Tax withholding(F)6K$4.23$24K134K
Mar 10, 2026Option exercise(M)15K——140K
Mar 10, 2026Tax withholding(F)4K$4.23$18K126K
Mar 10, 2026Option exercise(M)10K——130K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Mar 10, 2026Option exercise(M)5K—$015K
Mar 10, 2026Option exercise(M)10K—$062K
Mar 10, 2026Option exercise(M)15K—$0131K
Mar 10, 2026Grant(A)120K—$0120K
Mar 10, 2026Grant(A)226K—$0226K

Transaction Codes

M
Option exercise / conversion
F
Shares withheld for taxes
A
Grant / award

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001873091-26-000003) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML