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Redmile Group, LLC

Position in ATRA — Atara Biotherapeutics, Inc.

CIK 1425738 Larkspur, CA

Position in ATRA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$5,070,727
+$2,981,482 QoQ
Shares Held
441,701
0.0% QoQ
Ownership
4.40%
of shares outstanding
% of Portfolio
0.34%
of 13F equity value
Holder Rank
#4
of 36 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ATRA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Redmile Group, LLC holds $1,454,356,867 across 35 Biotechnology names. ATRA ranks #30 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATRA

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30 filing rows on record
Report Date Value (USD) Shares
2026-07-22 $7,726,826 950,994
2026-06-30 $5,070,727 441,701
2026-05-12 $9,329,251 950,994
2026-03-31 $2,089,245 441,701
2025-12-31 $7,990,371 441,701
2025-11-12 $9,367,750 751,223
2025-09-30 $6,329,575 441,701
2025-06-30 $3,409,931 441,701
2025-05-16 $4,823,615 705,207
2025-03-31 $2,623,703 441,701
2024-12-31 $5,879,040 441,701
2024-09-30 $3,676,955 452,270
2024-06-30 $3,844,295 452,270
2024-03-31 $6,428,736 9,263,309
2023-12-31 $4,671,606 9,106,446
2023-09-30 $9,295,603 6,280,813
2023-06-30 $9,737,478 6,048,123
2023-03-31 $16,274,962 5,612,056
2022-12-31 $20,476,239 6,242,756
2022-09-30 $23,597,617 6,242,756
2022-06-30 $48,631,069 6,242,756
2022-03-31 $58,024,513 6,245,911
2021-12-31 $101,459,365 6,437,777
2021-09-30 $115,746,358 6,466,277
2021-06-30 $100,290,922 6,449,577
2021-03-31 $98,871,945 6,885,233
2020-12-31 $134,722,064 6,863,070
2020-09-30 $89,927,755 6,938,870
2020-06-30 $99,707,900 6,843,370
2020-03-31 $45,046,578 5,293,370