Porter Derrell (CIK 0001706400)

Latest company ownership

Role: SVP, Head of Global Commercial
Shares held
31,688
Last filed at
Mar 27, 2019
Confidence Score
50.0
2025Q4
Confidence Score History
2018Q2 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 15, 2019 Feb 19, 2019 Atara Biotherapeutics, Inc. SVP, Head of Global Commercial Sell 15.0 -5,909 -21.41% $236.4K
Feb 6, 2019 Feb 8, 2019 Atara Biotherapeutics, Inc. SVP, Head of Global Commercial Sell 26.3 -13,529 -27.95% $46.8K
May 15, 2018 May 16, 2018 Atara Biotherapeutics, Inc. SVP, Head of Global Commercial Sell 7.5 -16,334 -56.65% $735.4K
May 8, 2018 May 8, 2018 Atara Biotherapeutics, Inc. SVP, Head of Global Commercial Sell 25.0 -1,544 -10.99% $62K