SEC Form 4 · accession 0001209191-16-097728
Atara Biotherapeutics, Inc. · ATRA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Isaac E. Ciechanover
Officer — Chief Executive Officer · Director
Period of report
Feb 9, 2016
Accepted (ET)
Feb 11, 2016 · 8:48 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001604464
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1,F2 | Feb 9, 2016 | A | 163,973 | $0.00 | A | 211,413 | I | See Footnote |
| Common StockF2 | holding | — | — | — | 379,211 | I | See Footnote | |
| Common StockF3 | holding | — | — | — | 450,824 | I | See Footnote | |
| Common StockF4 | holding | — | — | — | 180,000 | I | See Footnote |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1These restricted stock units vest in four equal annual installments on each of the first, second, third and fourth anniversaries of the grant date, subject to the reporting person's continuous service.
- F2Shares 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.
- F3Sheld are held by the Ciechanover Family GRAT, of which the Reporting Person is a trustee.
- F4Sheld are held by the The Ciechanover 2015 GRAT, of which the Reporting Person is a trustee.