Richard Koo - Net Worth and Insider Trading
Richard Koo Net Worth
The estimated net worth of Richard Koo is at least $6 Million dollars as of 2025-04-11. Richard Koo is the Director of Amphastar Pharmaceuticals Inc and owns about 257,419 shares of Amphastar Pharmaceuticals Inc (AMPH) stock worth over $6 Million. Details can be seen in Richard Koo's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Richard Koo has not made any transactions after 2020-05-27 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Richard Koo
Richard Koo Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Richard Koo owns 1 companies in total, including Amphastar Pharmaceuticals Inc (AMPH) .
Click here to see the complete history of Richard Koo’s form 4 insider trades.
Insider Ownership Summary of Richard Koo
Ticker | Comapny | Transaction Date | Type of Owner |
---|---|---|---|
AMPH | Amphastar Pharmaceuticals Inc | 2020-05-27 | director |
Richard Koo Latest Holdings Summary
Richard Koo currently owns a total of 1 stock. Richard Koo owns 257,419 shares of Amphastar Pharmaceuticals Inc (AMPH) as of May 27, 2020, with a value of $6 Million.
Latest Holdings of Richard Koo
Ticker | Comapny | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
AMPH | Amphastar Pharmaceuticals Inc | 2020-05-27 | 257,419 | 23.52 | 6,054,495 |
Holding Weightings of Richard Koo
Richard Koo Form 4 Trading Tracker
According to the SEC Form 4 filings, Richard Koo has made a total of 1 transactions in Amphastar Pharmaceuticals Inc (AMPH) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Amphastar Pharmaceuticals Inc is the sale of 47,782 shares on May 27, 2020, which brought Richard Koo around $868,677.
Insider Trading History of Richard Koo
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Richard Koo Trading Performance
Richard Koo Ownership Network
Ownership Network List of Richard Koo
Ownership Network Relation of Richard Koo

Richard Koo Owned Company Details
What does Amphastar Pharmaceuticals Inc do?
Who are the key executives at Amphastar Pharmaceuticals Inc?
Richard Koo is the director of Amphastar Pharmaceuticals Inc. Other key executives at Amphastar Pharmaceuticals Inc include CFO & SVP & Treasurer William J Peters , EVP & Production Rong Zhou , and SVP Corp Admin Center Yakob Liawatidewi .
Amphastar Pharmaceuticals Inc (AMPH) Insider Trades Summary
Over the past 18 months, Richard Koo made no insider transaction in Amphastar Pharmaceuticals Inc (AMPH). Other recent insider transactions involving Amphastar Pharmaceuticals Inc (AMPH) include a net sale of 11,500 shares made by Floyd F. Petersen , a net sale of 102,921 shares made by William J Peters , and a net sale of 41,101 shares made by Richard K Prins .
In summary, during the past 3 months, insiders sold 5,731 shares of Amphastar Pharmaceuticals Inc (AMPH) in total and bought 0 shares, with a net sale of 5,731 shares. During the past 18 months, 561,145 shares of Amphastar Pharmaceuticals Inc (AMPH) were sold and 0 shares were bought by its insiders, resulting in a net sale of 561,145 shares.
Amphastar Pharmaceuticals Inc (AMPH)'s detailed insider trading history can be found in Insider Trading Tracker table.
Amphastar Pharmaceuticals Inc Insider Transactions
Richard Koo Mailing Address
Above is the net worth, insider trading, and ownership report for Richard Koo. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Richard Koo's mailing address is: Rancho Cucamonga Ca 91730.