Filing Details

Accession Number:
0001209191-18-011662
Form Type:
4
Zero Holdings:
No
Publication Time:
2018-02-20 20:22:07
Reporting Period:
2018-02-15
Accepted Time:
2018-02-20 20:22:07
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
1612096 E. Isaac Ciechanover 611 Gateway Boulevard
Suite 900
South San Francisco CA 94080
Chief Executive Officer Yes Yes 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 Disposition 2018-02-15 2,500 $45.58 260,378 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-15 2,433 $46.71 257,945 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-15 4,767 $47.56 253,178 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-15 300 $48.25 252,878 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-16 3,000 $45.44 249,878 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-16 1,600 $46.55 248,278 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-16 5,100 $47.91 243,178 No 4 S Indirect See footnote
Common Stock Disposition 2018-02-16 300 $48.43 242,878 No 4 S Indirect See footnote
Common Stock Acquisiton 2018-02-15 3,938 $0.00 812,613 No 4 M Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 S Indirect See footnote
No 4 M Direct
Reported Derivative Transactions
Sec. Name Sec. Type Acquisiton - Disposition Date Amount Price Amount - 2 Price - 2
Common Stock Restricted Stock Units Disposition 2018-02-15 3,938 $0.00 3,938 $0.00
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
0 No 4 M Direct
Footnotes
  1. Transaction pursuant to Rule 10b5-1 Plan adopted May 18, 2017.
  2. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $45.00 to $46.00. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
  3. Shares are held by the Isaac E. Ciechanover and Allison M. Ciechanover Family Trust dated 8/8/08, of which the Reporting Person is a trustee.
  4. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $46.10 to $47.10. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
  5. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $47.15 to $48.15. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
  6. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $46.15 to $47.10. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
  7. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $47.25 to $48.20. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
  8. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $48.30 to $48.55. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
  9. Shares issued upon settlement of vested restricted stock units ("RSUs").
  10. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock or a cash settlement.
  11. Fully vested.
  12. The earlier of (i) January 10, 2021 or (ii) the recipient's termination date.