Eric Andersen - Net Worth and Insider Trading

Eric Andersen Net Worth

The estimated net worth of Eric Andersen is at least $8 Million dollars as of 2026-09-11. Eric Andersen is the of Merrimack Pharmaceuticals Inc and owns about 534,008 shares of Merrimack Pharmaceuticals Inc (MACK) stock worth over $8 Million. Details can be seen in Eric Andersen'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 Eric Andersen has not made any transactions after 2023-12-28 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Eric Andersen

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Eric Andersen Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Eric Andersen owns 1 companies in total, including Merrimack Pharmaceuticals Inc (MACK) .

Click here to see the complete history of Eric Andersen’s form 4 insider trades.

Insider Ownership Summary of Eric Andersen

Ticker Company Transaction Date Type of Owner
MACK Merrimack Pharmaceuticals Inc 2023-12-28 director & other: See Remarks

Eric Andersen Latest Holdings Summary

Eric Andersen currently owns a total of 1 stock. Eric Andersen owns 534,008 shares of Merrimack Pharmaceuticals Inc (MACK) as of December 28, 2023, with a value of $8 Million.

Latest Holdings of Eric Andersen

Ticker Company Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
MACK Merrimack Pharmaceuticals Inc 2023-12-28 534,008 15.13 8,079,541

Holding Weightings of Eric Andersen


Eric Andersen Form 4 Trading Tracker

According to the SEC Form 4 filings, Eric Andersen has made a total of 11 transactions in Merrimack Pharmaceuticals Inc (MACK) over the past 5 years, including 11 buys and 0 sells. The most-recent trade in Merrimack Pharmaceuticals Inc is the acquisition of 49,550 shares on December 28, 2023, which cost Eric Andersen around $651,582.

Insider Trading History of Eric Andersen

* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.

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.

Eric Andersen Trading Performance

GuruFocus tracks the stock performance after each of Eric Andersen's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Eric Andersen is 13.85%. GuruFocus also compares Eric Andersen's trading performance to market benchmark return within the same time period. The performance of stocks bought by Eric Andersen within 3 months outperforms 11 times out of 22 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Eric Andersen'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 Eric Andersen

Average Return

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Average return per transaction

Outperforming Transactions

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14 out of 16 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(%) 11.72 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) 9.32 LIMIT LIMIT LIMIT LIMIT LIMIT

Get the full picture on these stocks
See GF Score, valuation, financials, and warning signs for every stock Eric Andersen owns.
View MACK Analysis

Eric Andersen Ownership Network

Ownership Network List of Eric Andersen

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Ownership Network Relation of Eric Andersen

Insider Network Chart


Eric Andersen Owned Company Details

What does Merrimack Pharmaceuticals Inc do?

Who are the key executives at Merrimack Pharmaceuticals Inc?

Eric Andersen is the director & other: See Remarks of Merrimack Pharmaceuticals Inc. Other key executives at Merrimack Pharmaceuticals Inc include director & President Gary L Crocker , director & other: See Remarks Noah G. Levy , and other: See Remarks Newtyn Management, Llc .

Merrimack Pharmaceuticals Inc (MACK) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Merrimack Pharmaceuticals Inc (MACK) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Merrimack Pharmaceuticals Inc (MACK) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Merrimack Pharmaceuticals Inc (MACK)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Merrimack Pharmaceuticals Inc Insider Transactions

No Available Data

Eric Andersen Mailing Address

Above is the net worth, insider trading, and ownership report for Eric Andersen. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Eric Andersen's mailing address is: Santa Monica X1 90404.