Gregory Grunberg - Net Worth and Insider Trading

Gregory Grunberg Net Worth

The estimated net worth of Gregory Grunberg is at least $15 Million dollars as of 2024-05-26. Gregory Grunberg is the Director of 89bio Inc and owns about 1,750,877 shares of 89bio Inc (ETNB) stock worth over $14 Million. Gregory Grunberg is also the Director of Kala Bio Inc and owns about 108,237 shares of Kala Bio Inc (KALA) stock worth over $704,785. Details can be seen in Gregory Grunberg's Latest Holdings Summary section.

Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the assumption that Gregory Grunberg has not made any transactions after 2021-04-21 and currently still holds the listed stock(s).

Transaction Summary of Gregory Grunberg

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Gregory Grunberg Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Gregory Grunberg owns 2 companies in total, including 89bio Inc (ETNB) , and Kala Bio Inc (KALA) .

Click here to see the complete history of Gregory Grunberg’s form 4 insider trades.

Insider Ownership Summary of Gregory Grunberg

Ticker Comapny Transaction Date Type of Owner
ETNB 89bio Inc 2021-04-21 director & 10 percent owner
KALA Kala Bio Inc 2020-03-13 director

Gregory Grunberg Latest Holdings Summary

Gregory Grunberg currently owns a total of 2 stocks. Among these stocks, Gregory Grunberg owns 1,750,877 shares of 89bio Inc (ETNB) as of April 21, 2021, with a value of $14 Million and a weighting of 95.29%. Gregory Grunberg also owns 108,237 shares of Kala Bio Inc (KALA) as of March 13, 2020, with a value of $704,785 and a weighting of 4.71%.

Latest Holdings of Gregory Grunberg

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
ETNB 89bio Inc 2021-04-21 1,750,877 8.14 14,252,139
KALA Kala Bio Inc 2020-03-13 108,237 6.51 704,785

Holding Weightings of Gregory Grunberg


Gregory Grunberg Form 4 Trading Tracker

According to the SEC Form 4 filings, Gregory Grunberg has made a total of 3 transactions in 89bio Inc (ETNB) over the past 5 years, including 2 buys and 1 sells. The most-recent trade in 89bio Inc is the sale of 850 shares on April 21, 2021, which brought Gregory Grunberg around $23,460.

According to the SEC Form 4 filings, Gregory Grunberg has made a total of 1 transactions in Kala Bio Inc (KALA) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Kala Bio Inc is the acquisition of 50,697 shares on March 13, 2020, which cost Gregory Grunberg around $20 Million.

Insider Trading History of Gregory Grunberg

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.

Gregory Grunberg Trading Performance

GuruFocus tracks the stock performance after each of Gregory Grunberg's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Gregory Grunberg is 12.82%. GuruFocus also compares Gregory Grunberg's trading performance to market benchmark return within the same time period. The performance of stocks bought by Gregory Grunberg within 3 months outperforms 2 times out of 5 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Gregory Grunberg'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 Gregory Grunberg

Average Return

Average return per transaction

Outperforming Transactions

2 out of 5 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(%) 18.31
Relative Return to S&P 500(%) 17.77

Gregory Grunberg Ownership Network

Ownership Network List of Gregory Grunberg

No Data

Ownership Network Relation of Gregory Grunberg


Gregory Grunberg Owned Company Details

What does 89bio Inc do?

Who are the key executives at 89bio Inc?

Gregory Grunberg is the director & 10 percent owner of 89bio Inc. Other key executives at 89bio Inc include director & Chief Executive Officer Rohan Palekar , director & 10 percent owner Ra Capital Healthcare Fund Lp , and See Remarks Quoc Le-nguyen .

89bio Inc (ETNB) Insider Trades Summary

Over the past 18 months, Gregory Grunberg made no insider transaction in 89bio Inc (ETNB). Other recent insider transactions involving 89bio Inc (ETNB) include a net sale of 27,280 shares made by Ryan Martins , a net sale of 87,195 shares made by Rohan Palekar , and a net purchase of 3,811,538 shares made by Ra Capital Healthcare Fund Lp .

In summary, during the past 3 months, insiders sold 52,718 shares of 89bio Inc (ETNB) in total and bought 1,350,000 shares, with a net purchase of 1,297,282 shares. During the past 18 months, 146,908 shares of 89bio Inc (ETNB) were sold and 3,899,326 shares were bought by its insiders, resulting in a net purchase of 3,752,418 shares.

89bio Inc (ETNB)'s detailed insider trading history can be found in Insider Trading Tracker table.

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89bio Inc Insider Transactions

No Available Data

Gregory Grunberg Mailing Address

Above is the net worth, insider trading, and ownership report for Gregory Grunberg. You might contact Gregory Grunberg via mailing address: 100 Beaver Street, Waltham Ma 02453.

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