Arkolith/Insider Trading/ATRA/Form 4

Panacea Innovation Ltd

10% OwnerAtara Biotherapeutics, Inc. (ATRA) · full profile →Form 4 · filed Dec 1, 2025
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
2 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Nov 28, 2025Tax withholding(F)1$14.03$1449K
Nov 28, 2025Option exercise(M)49K—$049K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Nov 28, 2025Option exercise(M)49K$6.61$322K259K

Transaction Codes

F
Shares withheld for taxes
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-25-304018) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML