Joe Newell - May 18, 2021 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role
Chief Operations Officer
Signature
/s/ David Tucker, Attorney-in-Fact for Joe Newell
Stock symbol
ATRA
Transactions as of
May 18, 2021
Transactions value $
-$35,691
Form type
4
Date filed
5/20/2021, 04:33 PM
Previous filing
May 17, 2021
Next filing
Aug 19, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ATRA Common Stock Sale -$35.7K -2.45K -1.87% $14.55* 129K May 18, 2021 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares sold pursuant to a 10b5-1 arrangement to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units.
F2 The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on May 18, 2021 and May 19, 2021 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees.