Eric J. Hyllengren - 31 Mar 2025 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role
Former EVP, CFO & COO
Signature
/s/ John Chao, Attorney-in-Fact for Eric J. Hyllengren
Issuer symbol
ATRA
Transactions as of
31 Mar 2025
Net transactions value
$0
Form type
4
Filing time
02 Apr 2025, 19:54:05 UTC
Previous filing
05 Mar 2025
Next filing
17 Jul 2025
SEC
View on sec.gov

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
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -1,900 -100% $0.000000 0 31 Mar 2025 Common Stock 1,900 $996.25 Direct F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -460 -100% $0.000000 0 31 Mar 2025 Common Stock 460 $961.75 Direct F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -496 -100% $0.000000 0 31 Mar 2025 Common Stock 496 $303.75 Direct F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -154 -100% $0.000000 0 31 Mar 2025 Common Stock 154 $303.75 Direct F1, F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -381 -100% $0.000000 0 31 Mar 2025 Common Stock 381 $427.63 Direct F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -350 -100% $0.000000 0 31 Mar 2025 Common Stock 350 $427.63 Direct F2, F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -262 -100% $0.000000 0 31 Mar 2025 Common Stock 262 $255.25 Direct F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -543 -77% $0.000000 160 31 Mar 2025 Common Stock 543 $255.25 Direct F3, F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -331 -100% $0.000000 0 31 Mar 2025 Common Stock 331 $97.75 Direct F4
transaction ATRA Employee Stock Option (Right to Buy) Disposed to Issuer $0 -8,961 -77% $0.000000 2,656 31 Mar 2025 Common Stock 8,961 $97.75 Direct F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Eric J. Hyllengren is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 1/11th of the shares subject to the stock option vested and became exercisable on May 1, 2023, and the remaining shares vested in equal monthly installments over the following ten (10) months, subject to the reporting person's continuous service.
F2 1/23rd of the shares subject to the stock option vested and became exercisable on May 1, 2023, and the remaining shares vested in equal monthly installments over the following twenty-two (22) months, subject to the reporting person's continuous service.
F3 1/35th of the shares subject to the stock option vested and became 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.
F4 This option was cancelled by mutual agreement of the Issuer and the reporting person, in exchange for which cancellation the reporting person will receive a total cash payment of $100 as consideration.