Filing Details

Accession Number:
0001140361-22-007767
Form Type:
4
Zero Holdings:
No
Publication Time:
2022-03-03 19:02:45
Reporting Period:
2022-03-01
Accepted Time:
2022-03-03 19:02:45
SEC Url:
Form 4 Filing
Issuer
Cik Name Symbol Sector (SIC) IRS No
1604464 Atara Biotherapeutics Inc. ATRA Biological Products, (No Disgnostic Substances) (2836) 460920988
Insiders
Cik Name Reported Address Insider Title Director Officer Large Shareholder Other
1742696 Utpal Koppikar C/O Atara Biotherapeutics, Inc.
611 Gateway Blvd., Suite 900
South San Francisco CA 94080
Chief Financial Officer No No No No
Reported Non-Derivative Transactions
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings Equity Swap Involved Form Type Code Nature of Ownership Explanation
Common Stock Acquisiton 2022-03-01 61,235 $0.00 216,937 No 4 A Direct
Common Stock Disposition 2022-03-01 2,272 $9.86 214,665 No 4 S Direct
Common Stock Disposition 2022-03-01 1,491 $9.86 213,174 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 A Direct
No 4 S Direct
No 4 S Direct
Reported Derivative Transactions
Sec. Name Sec. Type Acquisiton - Disposition Date Amount Price Amount - 2 Price - 2
Common Stock Employee Stock Option (Right to Buy) Acquisiton 2022-03-01 115,107 $0.00 115,107 $10.21
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
115,107 2032-02-28 No 4 A Direct
Footnotes
  1. These restricted stock units vest in 16 equal quarterly installments on each Company Quarterly Vesting Date (as defined below), with the initial installment vesting on May 15, 2022, subject to the reporting person's continuous service. Company Quarterly Vesting Date means March 1, May 15, August 15 and November 15 of each year.
  2. Shares sold pursuant to a 10b5-1 arrangement to satisfy tax obligations in connection with the vesting of previously granted restricted stock units.
  3. The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on March 1, 2022 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employee.
  4. 1/48th of the shares subject to the stock option vest and become exercisable each month with the initial installment vesting on April 1, 2022, subject to the reporting person's continuous service.