Arkolith/Insider Trading/RNA/Form 4

Mosbrooker Eric

Chief Commercial OfficerAvidity Biosciences, Inc. (RNA) · full profile →Form 4 · filed Dec 19, 2025
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
3 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Dec 17, 2025Grant(A)72K—$0127K
Dec 17, 2025Tax withholding(F)37K$71.87$2.6M90K
Dec 17, 2025Tax withholding(F)11K$71.87$821K79K

Transaction Codes

A
Grant / award
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001599901-25-000221) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML