Eric J. Hyllengren - Apr 1, 2023 Form 3 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role
SVP, CFO
Signature
/s/ Jeff Kiekhofer, Attorney-in-Fact for Eric J. Hyllengren
Stock symbol
ATRA
Transactions as of
Apr 1, 2023
Transactions value $
$0
Form type
3
Date filed
4/7/2023, 04:45 PM
Next filing
May 18, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding ATRA Common Stock 234K Apr 1, 2023 Direct F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 47.5K $39.85 Direct
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 11.5K $38.47 Direct
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 12.5K $12.15 Direct
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 3.72K $12.15 Direct F3
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 9.53K $17.11 Direct
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 8.77K $17.11 Direct F4
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 6.54K $10.21 Direct
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 17.6K $10.21 Direct F5
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 8.3K $3.91 Direct
holding ATRA Employee Stock Option (Right to Buy) Apr 1, 2023 Common Stock 290K $3.91 Direct F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Includes an aggregate 194,599 restricted stock units ("RSUs"), which are comprised of: (i) 5,297 RSUs that vest as to 1/4th of the shares on May 15, 2023 and each of the next three (3) "Quarterly Vesting Dates" (as defined herein); (ii) 6,066 RSUs that vest as to 1/8th of shares on May 15, 2023 and each of the next seven (7) Quarterly Vesting Dates; (iii) 18,697 RSUs that vest as to 1/3rd of shares on November 15, 2023, November 15, 2024 and November 15, 2025; (iv) 11,777 RSUs that vest as to 1/12th of shares on May 15, 2023 and each of the next eleven (11) Quarterly Vesting Dates; (v) 20,000 RSUs that vest as to 1/2nd of shares on November 15, 2023 and 1/2nd on November 15, 2024; and (vi) 132,762 RSUs that vest as to 1/12th of shares on May 15, 2023 and each of the next eleven (11) Quarterly Vesting Dates, each of which is subject to the reporting person's continuous service.
F2 "Quarterly Vesting Date" means March 1, May 15, August 15, and November 15 of each year, provided that if such date falls on a weekend or holiday, the "Quarterly Vesting Date" shall be the first (1st) business day after such date.
F3 1/11th of shares subject to the stock option vest and become exercisable on May 1, 2023, and the remaining shares vest in equal monthly installments over the following ten (10) months, subject to the reporting person's continuous service.
F4 1/23rd of shares subject to the stock option vest and become exercisable on May 1, 2023, and the remaining shares vest in equal monthly installments over the following twenty-two (22) months, subject to the reporting person's continuous service.
F5 1/35th of shares subject to the stock option vest and become exercisable on May 1, 2023, and the remaining shares vest in equal monthly installments over the following thirty-four (34) months, subject to the reporting person's continuous service.

Remarks:

Exhibit 24 - Power of Attorney