Koo Richard (CIK 0001611219)

Latest company ownership

Shares held
219,822
Last filed at
Jun 24, 2014
Confidence Score
50.0
2025Q4
Confidence Score History
2014Q3 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Jun 1, 2021 Jun 2, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -25,827 -8.93% $498K
May 27, 2020 May 28, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -47,782 -15.66% $868.9K
Dec 11, 2018 Dec 12, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -29,278 -10.41% $624.1K
Aug 15, 2014 Aug 19, 2014 Amphastar Pharmaceuticals, Inc. Director Buy 78.8 +4,900 2.23% $49.4K