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CIK 0001604464 · Non-accelerated filer<br>Smaller reporting company

Atara Biotherapeutics, Inc.

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Ticker
ATRA
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
460920988
Phone
805-623-4211
Business address
1280 RANCHO CONEJO BLVD, THOUSAND OAKS, CA, 91320
  1. 4 Open-market buy Director bought 104,166 shares at $9.60 ($999,994)
  2. 4 Open-market sale President and CEO sold 5,062 shares at $8.08 ($40,883)
  3. 4 Shares withheld for taxes Director gave up 60 shares (to pay taxes)
  4. 3 Insider Initial Statement of Ownership
  5. 4 Grant or award Director acquired 24,000 shares (grant or award)
  6. 3 Insider Initial Statement of Ownership
  7. 4 Grant or award Director acquired 12,000 shares (grant or award)
  8. 4 Grant or award Director acquired 12,000 shares (grant or award)
  9. 4 Grant or award Director acquired 12,000 shares (grant or award)
  10. 4 Open-market sale President and CEO sold 5,241 shares at $9.13 ($47,845)
  11. 4 Open-market sale Chief Accounting Officer sold 2,414 shares at $9.13 ($22,036)
  12. 4 Open-market sale 10% owner sold 313,446 shares at $10.10 ($3,165,021)
  13. 4 Open-market buy 10% owner bought 507,407 shares at $9.35 ($4,744,255)
  14. 3 Insider Initial Statement of Ownership
  15. 4 Shares withheld for taxes 10% owner gave up 5 shares (to pay taxes)
  16. 4 Grant or award President and CEO acquired 81,100 shares (grant or award)
  17. 4 Grant or award Chief Accounting Officer acquired 20,300 shares (grant or award)
  18. 4 Open-market sale Chief Accounting Officer sold 2,104 shares at an average $5.08 ($10,691)
  19. 4 Open-market sale President and CEO sold 2,996 shares at an average $5.09 ($15,237)
  20. 4 Open-market sale 10% owner sold 80,554 shares at $6.07 ($489,019)

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