SEC Insider Transactions from Murugan Amar.

Last updated: 2026-03-14 11:19 UTC | Total transactions: 14

Murugan Amar has filed 14 insider transactions across 1 company since March 2023.

Most recent transaction: a sale of 877 shares of Atara Biotherapeutics, Inc. ($ATRA) on August 16, 2024.

Activity breakdown: 0 open-market purchases and 11 sales.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Aug. 16, 2024 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 877 $6.63 27,108.0000 4,236,000 3.13% 0.02%
Aug. 16, 2024 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 192 $6.63 26,916.0000 4,236,000 0.71% 0.00%
Aug. 16, 2024 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 89 $6.63 26,827.0000 4,236,000 0.33% 0.00%
May 16, 2024 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 32401 $0.62 695,120.0000 4,236,000 4.45% 0.76%
March 4, 2024 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 10044 $0.72 727,521.0000 4,236,000 1.36% 0.24%
Jan. 8, 2024 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer A Common Stock 475000 $0.00 737,565.0000 4,236,000 180.91% 11.21%
Nov. 16, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 8307 $0.39 257,084.0000 0 3.13% 0.00%
Aug. 16, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 5050 $1.65 269,013.0000 0 1.84% 0.00%
Aug. 16, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 3622 $1.65 265,391.0000 0 1.35% 0.00%
May 16, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 7404 $2.04 271,930.0000 0 2.65% 0.00%
May 16, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar EVP, Chief Legal Officer S Common Stock 985 $2.04 270,945.0000 0 0.36% 0.00%
March 2, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar SVP, GC & Secretary S Common Stock 4221 $3.63 279,334.0000 0 1.49% 0.00%
March 1, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar SVP, GC & Secretary A Common Stock 155375 $0.00 283,555.0000 0 121.22% 0.00%
March 1, 2023 Atara Biotherapeutics, Inc. $ATRA Murugan Amar SVP, GC & Secretary A Employee Stock Option (Right to Buy) 349593 $0.00 349,593.0000 0 9999.99% 0.00%