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Atara Biotherapeutics, Inc. (ATRA)  
$12.22 1.32 (9.75%) as of 4:30 Tue 12/2


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Exchange: N/A
Security Type: Common
Shares Out: 120,416,000
Market Cap: 1.47(B)
Last Volume: 0 Avg Vol: 0
52 Week Range: $5.3 - $18
Level I Sector: N/A
Level II Sector: N/A
Level III Sector: N/A

Member Indexes:

   

Rankings:

     
Insider 3 Months    :   -
Insider 6 Months    : 11.2
Insider 3/6 Months : 11.8
Guru Rank Number :  -
Guru Rank Value     :  -
Guru Occurances    :  -

 

            6 Months   1 Year   2 Year  
 
Company Profile   Atara Biotherapeutics is engaged in T-cell immunotherapy, using its allogeneic Epstein-Barr virus (EBV) T-cell platform to develop therapies for patients with diseases, including tumors, hematologic cancers and autoimmune disease. Co.'s platform utilizes the biology of EBV T cells and has the capability to treat a range of EBV-driven diseases or other diseases through incorporation of engineered chimeric antigen receptors or T-cell receptors. Co.'s T-cell immunotherapy program, tab-cel® (tabelecleucel), is partnered with Pierre Fabre Medicament and is in Phase 3 development for patients with EBV-driven post-transplant lymphoproliferative disease.


 
 
Summary  (Direct Transactions Only) 3 Months 6 Months 12 Months 24 Months
Total Shares Bought 0 74,335 74,335 74,335
Total Buy Value $0 $856,795 $856,795 $856,795
Total People Bought 0 1 1 1
Total Buy Transactions 0 2 2 2
Total Shares Sold 4,719 9,486 20,581 300,055
Total Sell Value $62,225 $117,594 $193,940 $463,183
Total People Sold 2 2 4 6
Total Sell Transactions 2 4 9 27
End Date 2025-09-04 2025-06-03 2024-12-03 2023-12-04

   
Records found: 667
  Page 1 of 27  
Filer's Name Relation Title Off-Dir-10% Tran. Date Form Action Price Mkt Value D/I Shares Holdings
Rank

 
3m +/-  
Form
   Huang James   –       •       •   2025-11-28 4 D $14.03 $14 I/I (1) 48,736     -
   Huang James   –       •       •   2025-11-28 4 OE $0.00 $5 I/I 48,737 48,737     -
   Nguyen Anhco President and CEO   •       •      –    2025-11-17 4 S $13.19 $38,437 D/D (2,915) 64,974 -15%     
   Grant-Huerta Yanina Chief Accounting Officer   •       •      –    2025-11-17 4 S $13.19 $23,788 D/D (1,804) 33,454 -15%     
   Grant-Huerta Yanina Chief Accounting Officer   •       •      –    2025-08-18 4 S $11.61 $21,009 D/D (1,809) 35,258 -32%     
   Nguyen Anhco President and CEO   •       •      –    2025-08-18 4 S $11.61 $34,360 D/D (2,958) 67,889 -32%     
   Huang James   –       •       •   2025-08-15 4 B $12.19 $670,423 I/I 55,000 1,405,000 0.01 23%     
   Huang James   –       •       •   2025-07-17 4 B $9.64 $186,372 I/I 19,335 1,350,000 0.01 41%     
   Touchon Pascal   •       •      –    2025-06-10 4 A $0.00 $0 D/D 7,828 77,955     -
   Fust Matthew K   •       •      –    2025-06-10 4 A $0.00 $0 D/D 7,828 18,188     -
   Gallagher Carol Giltner   •       •      –    2025-06-10 4 A $0.00 $0 D/D 7,828 33,012     -
   Roncarolo Maria Grazia   •       •      –    2025-06-10 4 A $0.00 $0 D/D 7,828 17,368     -
   Mallik Ameet   •       •      –    2025-06-10 4 A $0.00 $0 D/D 7,828 16,928     -
   Heiden William K   •       •      –    2025-06-10 4 A $0.00 $0 D/D 7,828 22,188     -
   Green Jeremy Director   –       •      –    2025-05-16 3 IO $0.00 $0 I/I 0 441,701 102%     
   Huang James   –       •       •   2025-05-16 3 IO $0.00 $0 I/I 0 1,330,665 102%     
   Grant-Huerta Yanina Chief Accounting Officer   •       •      –    2025-05-16 4 S $6.76 $15,000 D/D (2,218) 37,067 -102%     
   Nguyen Anhco President and CEO   •       •      –    2025-05-16 4 S $6.76 $22,156 D/D (3,276) 70,847 -102%     
   Ciongoli Gregory Austin See remarks   –       •       •   2025-05-16 4 A $6.61 $499,531 D/D 75,572 1,209,395     -
   Grant-Huerta Yanina Chief Accounting Officer   •       –      –    2025-03-31 3 IO $0.00 $0 D/D 0 39,285 84%     
   Henrich Jill EVP, Chief Regulatory Officer   •       •      –    2025-03-03 4 S $7.00 $7,410 D/D (1,059) 18,679 -32%     
   Hyllengren Eric J EVP, CFO and COO   •       •      –    2025-03-03 4 S $7.00 $8,473 D/D (1,211) 56,231 -32%     
   Nguyen Anhco President and CEO   •       •      –    2025-03-03 4 S $7.00 $23,307 D/D (3,331) 74,123 -32%     
   Hyllengren Eric J EVP, CFO and COO   •       •      –    2025-01-27 4 A $0.00 $0 D/D 34,050 57,442     -
   Hyllengren Eric J EVP, CFO and COO   •       •      –    2024-11-18 4 S $11.20 $15,274 D/D (1,364) 23,392 47%     

  667 Records found
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  Page 1 of 27
  Transaction Code Key: Ownership Code Key
  B - Buy AB - Automatic Buy D - Direct Ownership
  S - Sell AS - Automatic Sell I - Indirect Ownership
  OE - Options Exercised A - Acquired
  IO - Initital Ownership D - Disposed