InsiderTrades

Nguyen AnhCo

SEC CIK 1977970 · EDGAR

Buying vs selling by month open-market trades, last 38 months, ATRA
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
ATRAAtara Biotherapeutics, Inc.Pres, CEO, Dir 132.8K — $315.7K 162023-08-162026-08-17

Most active insiders at ATRA, 12 months

#InsiderTitleBoughtSold
1 EcoR1 Capital, LLC10% $4.74M—
2 Panacea Innovation Ltd10% —$3.17M
3 Cherry Brian NDir $1000.0K—
4 Huang JamesDir, 10% —$489.0K
5 Nguyen AnhCoPres, CEO, Dir —$142.4K
6 Grant-Huerta YaninaCAO —$56.5K
7 Ciongoli Gregory AustinDir, 10%, See Remarks ——
8 Redmile Group, LLCDir ——
9 Fust Matthew KDir ——
10 HEIDEN WILLIAM KDir ——

Transactions 16

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2026-08-26 19:45 2026-08-17 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $8.08 -5,062 132.8K -4% -$40.9K
2026-05-20 17:24 2026-05-18 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $9.13 -5,241 137.8K -4% -$47.8K
2026-03-11 2026-03-09 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir A - Grant $0.00 +81.1K 143.1K +131% $0
M 2026-03-04 2026-03-02 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $5.09 -2,996 62.0K -5% -$15.2K
M 2025-11-19 2025-11-17 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $13.19 -2,915 65.0K -4% -$38.4K
M 2025-08-20 2025-08-18 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $11.62 -2,958 69.5K -4% -$34.4K
2025-05-20 2025-05-16 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $6.76 -3,276 70.8K -4% -$22.1K
2025-03-05 2025-03-03 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $7.00 -3,331 74.1K -4% -$23.3K
2024-11-20 2024-11-18 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir S - Sale $11.20 -1,664 77.5K -2% -$18.6K
2024-09-11 2024-09-09 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo Pres, CEO, Dir A - Grant $0.00 +45.0K 79.1K +132% $0
M 2024-08-20 2024-08-16 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo EVP, Chief Sci, Tech Off S - Sale $6.63 -1,821 34.1K -5% -$12.1K
2024-05-20 2024-05-16 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo EVP, Chief Sci, Tech Off S - Sale $0.62 -42.9K 898.5K -5% -$26.6K
2024-03-06 2024-03-04 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo EVP, Chief Sci, Tech Off S - Sale $0.72 -10.7K 941.4K -1% -$7,737
2024-01-09 2024-01-08 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo EVP, Chief Sci, Tech Off A - Grant $0.00 +675.0K 952.1K +244% $0
2023-11-20 2023-11-16 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo EVP, Chief Sci, Tech Off S - Sale $0.39 -8,856 277.1K -3% -$3,454
M 2023-08-18 2023-08-16 ATRA Atara Biotherapeutics, Inc. Nguyen AnhCo EVP, Chief Sci, Tech Off S - Sale $1.65 -15.1K 295.3K -5% -$25.0K

Purchase Sale Sale after option exercise All abbreviations