William K Heiden - Net Worth and Insider Trading

William K Heiden Net Worth

The estimated net worth of William K Heiden is at least $7 Million dollars as of 2024-04-25. William K Heiden is the President & CEO of AMAG Pharmaceuticals Inc and owns about 490,056 shares of AMAG Pharmaceuticals Inc (AMAG) stock worth over $7 Million. William K Heiden is also the Director of Atara Biotherapeutics Inc and owns about 209,000 shares of Atara Biotherapeutics Inc (ATRA) stock worth over $149,372. Details can be seen in William K Heiden's Latest Holdings Summary section.

Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the assumption that William K Heiden has not made any transactions after 2023-11-10 and currently still holds the listed stock(s).

Transaction Summary of William K Heiden

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William K Heiden Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, William K Heiden owns 3 companies in total, including Atara Biotherapeutics Inc (ATRA) , AMAG Pharmaceuticals Inc (AMAG) , and Macrogenics Inc (MGNX) .

Click here to see the complete history of William K Heiden’s form 4 insider trades.

Insider Ownership Summary of William K Heiden

Ticker Comapny Transaction Date Type of Owner
ATRA Atara Biotherapeutics Inc 2023-11-10 director
AMAG AMAG Pharmaceuticals Inc 2020-03-02 director & President & CEO
MGNX Macrogenics Inc 2022-05-23 director

William K Heiden Latest Holdings Summary

William K Heiden currently owns a total of 2 stocks. Among these stocks, William K Heiden owns 490,056 shares of AMAG Pharmaceuticals Inc (AMAG) as of May 9, 2019, with a value of $7 Million and a weighting of 97.83%. William K Heiden also owns 209,000 shares of Atara Biotherapeutics Inc (ATRA) as of November 10, 2023, with a value of $149,372 and a weighting of 2.17%.

Latest Holdings of William K Heiden

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
AMAG AMAG Pharmaceuticals Inc 2019-05-09 490,056 13.75 6,738,270
ATRA Atara Biotherapeutics Inc 2023-11-10 209,000 0.71 149,372

Holding Weightings of William K Heiden


William K Heiden Form 4 Trading Tracker

According to the SEC Form 4 filings, William K Heiden has made a total of 1 transactions in AMAG Pharmaceuticals Inc (AMAG) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in AMAG Pharmaceuticals Inc is the acquisition of 10,000 shares on May 9, 2019, which cost William K Heiden around $107,000.

According to the SEC Form 4 filings, William K Heiden has made a total of 1 transactions in Atara Biotherapeutics Inc (ATRA) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Atara Biotherapeutics Inc is the acquisition of 100,000 shares on November 10, 2023, which cost William K Heiden around $25,000.

Insider Trading History of William K Heiden

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

William K Heiden Trading Performance

GuruFocus tracks the stock performance after each of William K Heiden's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by William K Heiden is 124.71%. GuruFocus also compares William K Heiden's trading performance to market benchmark return within the same time period. The performance of stocks bought by William K Heiden within 3 months outperforms 1 times out of 2 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how William K Heiden's insider trading performs compared to the benchmark.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of William K Heiden

Average Return

Outperforming Transactions

Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) 89.19 124.71 -16.18 -17.52
Relative Return to S&P 500(%) 87.01 116.95 -23.93 -19.58

William K Heiden Ownership Network

Ownership Network List of William K Heiden

No Data

Ownership Network Relation of William K Heiden


William K Heiden Owned Company Details

What does Atara Biotherapeutics Inc do?

Who are the key executives at Atara Biotherapeutics Inc?

William K Heiden is the director of Atara Biotherapeutics Inc. Other key executives at Atara Biotherapeutics Inc include EVP & Global Head RA & Quality Jill Henrich , SVP & GC & Secretary Amar Murugan , and director & President and CEO Pascal Touchon .

Atara Biotherapeutics Inc (ATRA) Insider Trades Summary

Over the past 18 months, William K Heiden made no insider transaction in Atara Biotherapeutics Inc (ATRA). Other recent insider transactions involving Atara Biotherapeutics Inc (ATRA) include a net sale of 151,346 shares made by Pascal Touchon , a net sale of 43,245 shares made by Amar Murugan , and a net sale of 34,741 shares made by Eric J Hyllengren .

In summary, during the past 3 months, insiders sold 56,192 shares of Atara Biotherapeutics Inc (ATRA) in total and bought 0 shares, with a net sale of 56,192 shares. During the past 18 months, 337,881 shares of Atara Biotherapeutics Inc (ATRA) were sold and 816,825 shares were bought by its insiders, resulting in a net purchase of 478,944 shares.

Atara Biotherapeutics Inc (ATRA)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Atara Biotherapeutics Inc Insider Transactions

No Available Data

William K Heiden Mailing Address

Above is the net worth, insider trading, and ownership report for William K Heiden. You might contact William K Heiden via mailing address: C/o Amag Pharmaceuticals, Inc., 1100 Winter Street, Waltham Ma 02451.

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