REDMILE GROUP, LLC

PrivateCIK: 1425738
Location

LARKSPUR, CA

REDMILE GROUP, LLC exercised options at ATARA BIOTHERAPEUTICS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderREDMILE GROUP, LLCCIK 1425738
→
IssuerATARA BIOTHERAPEUTICS, INC.CIK 1604464
Director
Since May 2025
-60.00
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
5
Total transactions
195.21K acquired · 195.27K disposed
Non-Derivative Transactions2

Common Stock

Indirect
M · Option Exercise

Shares

+195.21K

Price / share

—

Trade value

—

% of position

44.2%
7/22/2026
441.70K→636.91K

Common Stock

Indirect
F · Tax Withholding

Shares

−60.00

Price / share

—

Trade value

—

% of position

0.0%
7/22/2026
636.91K→636.85K
Total

Net shares

+195.15K

Net value

$0.00

Derivative Transactions3

Pre-Funded Warrants to Purchase Common Stock

Indirect
M · Option Exercise
Converts to

Common Stock

101.09K shares

Shares

−101.09K

Strike price

0.0025

Held after

0.00

Exercisable

—

7/22/2026

Pre-Funded Warrants to Purchase Common Stock

Indirect
M · Option Exercise
Converts to

Common Stock

38.73K shares

Shares

−38.73K

Strike price

0.0025

Held after

0.00

Exercisable

—

7/22/2026

Pre-Funded Warrants to Purchase Common Stock

Indirect
M · Option Exercise
Converts to

Common Stock

55.39K shares

Shares

−55.39K

Strike price

0.0025

Held after

0.00

Exercisable

—

7/22/2026
Non-Derivative Holdings (Post-Transaction)0
No non-derivative holdings reported
Derivative Holdings (Post-Transaction)2

Pre-Funded Warrants to Purchase Common Stock

Indirect
Underlying security
Common Stock

Underlying shares

2.13M

Shares owned

2.13M

Exercise price

0.0001

Expiration

—

Exercise window

—

Pre-Funded Warrants to Purchase Common Stock

Indirect
Underlying security
Common Stock

Underlying shares

1.09M

Shares owned

1.09M

Exercise price

0.0025

Expiration

—

Exercise window

—

Total

Underlying

3.22M

Owned

3.22M