Joe Newell Atara Biotherapeutics, Inc. (ATRA) insider trading activity

Joe Newell is Chief Operations Officer of Atara Biotherapeutics, Inc.. Currently has a direct ownership of 113,097 shares of ATRA, which is worth approximately $871,977. The most recent transaction as insider was on Nov 16, 2021, when has been sold 3,332 shares (Common Stock) at a price of $17.12 per share, resulting in proceeds of $57,044. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 113K

0% 3M change

0% 12M change

Total Value Held $871,977

Joe Newell Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 16 2021	SELL Open market or private sale	$57,044 $17.12 p/Share	3,332 Reduced 2.86%	113,097 Common Stock
Nov 15 2021	SELL Open market or private sale	$123,970 $17.71 p/Share	7,000 Reduced 5.67%	116,429 Common Stock
Nov 15 2021	BUY Exercise of conversion of derivative security	$42,525 $12.15 p/Share	3,500 Added 2.76%	123,429 Common Stock
Sep 22 2021	SELL Open market or private sale	$178,500 $17.0 p/Share	10,500 Reduced 8.05%	119,929 Common Stock
Sep 22 2021	BUY Exercise of conversion of derivative security	$127,575 $12.15 p/Share	10,500 Added 7.45%	130,429 Common Stock
Sep 15 2021	SELL Open market or private sale	$48,641 $15.61 p/Share	3,116 Reduced 2.53%	119,929 Common Stock
Aug 30 2021	SELL Open market or private sale	$52,500 $15.0 p/Share	3,500 Reduced 2.77%	123,045 Common Stock

Aug 17 2021	SELL Open market or private sale	$30,398 $12.53 p/Share	2,426 Reduced 1.88%	126,545 Common Stock
May 18 2021	SELL Open market or private sale	$35,691 $14.55 p/Share	2,453 Reduced 1.87%	128,971 Common Stock
May 17 2021	SELL Open market or private sale	$52,500 $15.0 p/Share	3,500 Reduced 2.59%	131,424 Common Stock
Apr 05 2021	SELL Open market or private sale	$9,655 $14.74 p/Share	655 Reduced 0.48%	134,924 Common Stock
Mar 26 2021	SELL Open market or private sale	$38,491 $14.58 p/Share	2,640 Reduced 1.91%	135,579 Common Stock
Mar 15 2021	SELL Open market or private sale	$121,870 $17.41 p/Share	7,000 Reduced 4.82%	138,219 Common Stock
Mar 15 2021	BUY Exercise of conversion of derivative security	$42,525 $12.15 p/Share	3,500 Added 2.35%	145,219 Common Stock
Mar 02 2021	SELL Open market or private sale	$27,872 $16.74 p/Share	1,665 Reduced 1.16%	141,719 Common Stock
Mar 01 2021	BUY Grant, award, or other acquisition	-	37,715 Added 20.83%	143,384 Common Stock
Feb 08 2021	SELL Open market or private sale	$79,236 $20.39 p/Share	3,886 Reduced 3.55%	105,669 Common Stock
Jan 15 2021	SELL Open market or private sale	$131,880 $18.84 p/Share	7,000 Reduced 6.01%	109,555 Common Stock
Jan 15 2021	BUY Exercise of conversion of derivative security	$42,525 $12.15 p/Share	3,500 Added 2.92%	116,555 Common Stock
Dec 16 2020	SELL Open market or private sale	$161,770 $23.11 p/Share	7,000 Reduced 5.83%	113,055 Common Stock
Dec 16 2020	BUY Exercise of conversion of derivative security	$42,525 $12.15 p/Share	3,500 Added 2.83%	120,055 Common Stock
Nov 17 2020	SELL Open market or private sale	$32,581 $19.77 p/Share	1,648 Reduced 1.39%	116,555 Common Stock
Nov 13 2020	SELL Open market or private sale	$140,550 $18.74 p/Share	7,500 Reduced 5.97%	118,203 Common Stock
Nov 13 2020	BUY Exercise of conversion of derivative security	$42,525 $12.15 p/Share	3,500 Added 2.71%	125,703 Common Stock

Joe Newell

Chief Operations Officer

South San Francisco, CA

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