Peter W. Sonsini - Net Worth and Insider Trading

Peter W. Sonsini Net Worth

The estimated net worth of Peter W. Sonsini is at least $563 Million dollars as of 2024-12-04. Peter W. Sonsini is the 10% Owner of Mirum Pharmaceuticals Inc and owns about 4,186,243 shares of Mirum Pharmaceuticals Inc (MIRM) stock worth over $191 Million. Peter W. Sonsini is the 10% Owner of Monte Rosa Therapeutics Inc and owns about 7,692,298 shares of Monte Rosa Therapeutics Inc (GLUE) stock worth over $76 Million. Peter W. Sonsini is also the 10% Owner of Adaptimmune Therapeutics PLC and owns about 102,478,668 shares of Adaptimmune Therapeutics PLC (ADAP) stock worth over $72 Million. Besides these, Peter W. Sonsini also holds AVEO Pharmaceuticals Inc (AVEO) , Akouos Inc (AKUS) , Trevi Therapeutics Inc (TRVI) , Ardelyx Inc (ARDX) , Mersana Therapeutics Inc (MRSN) , NeueHealth Inc (NEUE) , Inozyme Pharma Inc (INZY) , Marker Therapeutics Inc (MRKR) , Surface Oncology Inc (SURF) , Regulus Therapeutics Inc (RGLS) , Eargo Inc (EAR) , Interleukin Genetics Inc (ILIU) , Achaogen Inc (AKAOQ) , Metacrine Inc (MTCR) , TRACON Pharmaceuticals Inc (TCON) , ARCA biopharma Inc (ABIO) , Genocea Biosciences Inc (GNCAQ) , Appian Corp (APPN) . Details can be seen in Peter W. Sonsini'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 Peter W. Sonsini has not made any transactions after 2022-05-25 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

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Transaction Summary of Peter W. Sonsini

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Peter W. Sonsini Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Peter W. Sonsini owns 53 companies in total, including Eargo Inc (EAR) , Metacrine Inc (MTCR) , and Mersana Therapeutics Inc (MRSN) among others .

Click here to see the complete history of Peter W. Sonsini’s form 4 insider trades.

Insider Ownership Summary of Peter W. Sonsini

Ticker Comapny Transaction Date Type of Owner
EAR Eargo Inc 2020-10-20 10 percent owner
MTCR Metacrine Inc 2021-12-22 10 percent owner
MRSN Mersana Therapeutics Inc 2017-07-03 10 percent owner
LIMIT LIMIT 2020-07-28 10 percent owner
LIMIT LIMIT 2022-05-25 10 percent owner
LIMIT LIMIT 2020-07-23 10 percent owner
LIMIT LIMIT 2020-07-09 10 percent owner
LIMIT LIMIT 2020-06-30 10 percent owner
LIMIT LIMIT 2020-06-19 10 percent owner
LIMIT LIMIT 2018-04-23 10 percent owner
LIMIT LIMIT 2022-04-11 10 percent owner
LIMIT LIMIT 2020-03-11 10 percent owner
LIMIT LIMIT 2015-03-11 10 percent owner
LIMIT LIMIT 2020-02-06 10 percent owner
LIMIT LIMIT 2020-01-29 10 percent owner
LIMIT LIMIT 2020-01-24 10 percent owner
LIMIT LIMIT 2020-12-04 10 percent owner
LIMIT LIMIT 2016-07-18 10 percent owner
LIMIT LIMIT 2019-11-06 10 percent owner
LIMIT LIMIT 2019-10-30 10 percent owner
LIMIT LIMIT 2019-07-22 10 percent owner
LIMIT LIMIT 2019-06-07 10 percent owner
LIMIT LIMIT 2018-12-07 10 percent owner
LIMIT LIMIT 2021-03-16 10 percent owner
LIMIT LIMIT 2018-05-01 10 percent owner
LIMIT LIMIT 2018-03-27 10 percent owner
LIMIT LIMIT 2018-03-09 10 percent owner
LIMIT LIMIT 2018-02-26 10 percent owner
LIMIT LIMIT 2017-11-27 10 percent owner
LIMIT LIMIT 2015-09-30 10 percent owner
LIMIT LIMIT 2018-01-01 10 percent owner
LIMIT LIMIT 2017-11-20 10 percent owner
LIMIT LIMIT 2017-06-29 director
LIMIT LIMIT 2016-12-19 10 percent owner
LIMIT LIMIT 2016-07-29 10 percent owner
LIMIT LIMIT 2015-10-14 10 percent owner
LIMIT LIMIT 2014-08-06 10 percent owner
LIMIT LIMIT 2021-03-15 10 percent owner
LIMIT LIMIT 2018-12-07 10 percent owner
LIMIT LIMIT 2021-04-08 10 percent owner
LIMIT LIMIT 2021-01-01 10 percent owner
LIMIT LIMIT 2021-06-28 10 percent owner
LIMIT LIMIT 2020-12-09 10 percent owner
LIMIT LIMIT 2021-07-29 director & 10 percent owner
LIMIT LIMIT 2022-02-03 10 percent owner
LIMIT LIMIT 2021-07-21 10 percent owner
LIMIT LIMIT 2021-09-30 10 percent owner
LIMIT LIMIT 2021-06-28 10 percent owner
LIMIT LIMIT 2022-06-08 10 percent owner
LIMIT LIMIT 2022-08-03 10 percent owner
LIMIT LIMIT 2020-03-11 10 percent owner
LIMIT LIMIT 2018-01-19 10 percent owner
LIMIT LIMIT 2021-07-21 10 percent owner

Peter W. Sonsini Latest Holdings Summary

Peter W. Sonsini currently owns a total of 21 stocks. Among these stocks, Peter W. Sonsini owns 4,186,243 shares of Mirum Pharmaceuticals Inc (MIRM) as of July 22, 2019, with a value of $191 Million and a weighting of 33.91%. Peter W. Sonsini owns 7,692,298 shares of Monte Rosa Therapeutics Inc (GLUE) as of June 28, 2021, with a value of $76 Million and a weighting of 13.48%. Peter W. Sonsini also owns 102,478,668 shares of Adaptimmune Therapeutics PLC (ADAP) as of January 24, 2020, with a value of $72 Million and a weighting of 12.72%. The other 18 stocks AVEO Pharmaceuticals Inc (AVEO) , Akouos Inc (AKUS) , Trevi Therapeutics Inc (TRVI) , Ardelyx Inc (ARDX) , Mersana Therapeutics Inc (MRSN) , NeueHealth Inc (NEUE) , Inozyme Pharma Inc (INZY) , Marker Therapeutics Inc (MRKR) , Surface Oncology Inc (SURF) , Regulus Therapeutics Inc (RGLS) , Eargo Inc (EAR) , Interleukin Genetics Inc (ILIU) , Achaogen Inc (AKAOQ) , Metacrine Inc (MTCR) , TRACON Pharmaceuticals Inc (TCON) , ARCA biopharma Inc (ABIO) , Genocea Biosciences Inc (GNCAQ) , Appian Corp (APPN) have a combined weighting of 39.89% among all his current holdings.

Latest Holdings of Peter W. Sonsini

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
MIRM Mirum Pharmaceuticals Inc 2019-07-22 4,186,243 45.59 190,829,887
GLUE Monte Rosa Therapeutics Inc 2021-06-28 7,692,298 9.86 75,846,058
ADAP Adaptimmune Therapeutics PLC 2020-01-24 102,478,668 0.70 71,571,102
AVEO AVEO Pharmaceuticals Inc 2020-06-19 3,952,958 15.00 59,294,370
AKUS Akouos Inc 2020-06-30 4,294,207 13.29 57,070,011
TRVI Trevi Therapeutics Inc 2022-04-11 11,370,376 2.78 31,609,645
ARDX Ardelyx Inc 2016-07-18 5,331,039 5.50 29,320,715
MRSN Mersana Therapeutics Inc 2017-07-03 8,140,138 2.37 19,292,127
NEUE NeueHealth Inc 2021-06-28 2,280,554 5.25 11,972,909
INZY Inozyme Pharma Inc 2020-07-28 2,437,689 2.62 6,386,745
MRKR Marker Therapeutics Inc 2021-03-16 1,071,429 3.44 3,685,716
SURF Surface Oncology Inc 2018-04-23 3,312,877 1.07 3,544,778
RGLS Regulus Therapeutics Inc 2020-12-04 645,106 1.63 1,051,523
EAR Eargo Inc 2020-10-20 326,001 2.57 837,823
ILIU Interleukin Genetics Inc 2016-07-29 55,418,811 0.00 249,385
AKAOQ Achaogen Inc 2016-12-19 5,215,128 0.03 130,378
MTCR Metacrine Inc 2021-12-22 2,563,257 0.00 3,589
TCON TRACON Pharmaceuticals Inc 2018-03-27 17,330 0.03 558
ABIO ARCA biopharma Inc 2018-02-26 0 25.50 0
GNCAQ Genocea Biosciences Inc 2022-05-25 0 0.00 0
APPN Appian Corp 2017-11-27 0 38.61 0

Holding Weightings of Peter W. Sonsini


Peter W. Sonsini Form 4 Trading Tracker

According to the SEC Form 4 filings, Peter W. Sonsini has made a total of 0 transactions in Mirum Pharmaceuticals Inc (MIRM) over the past 5 years. The most-recent trade in Mirum Pharmaceuticals Inc is the acquisition of 450,000 shares on July 22, 2019, which cost Peter W. Sonsini around $7 Million.

According to the SEC Form 4 filings, Peter W. Sonsini has made a total of 1 transactions in Monte Rosa Therapeutics Inc (GLUE) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Monte Rosa Therapeutics Inc is the acquisition of 1,050,000 shares on June 28, 2021, which cost Peter W. Sonsini around $20 Million.

According to the SEC Form 4 filings, Peter W. Sonsini has made a total of 1 transactions in Adaptimmune Therapeutics PLC (ADAP) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Adaptimmune Therapeutics PLC is the acquisition of 7,500,000 shares on January 24, 2020, which cost Peter W. Sonsini around $5 Million.

More details on Peter W. Sonsini's insider transactions can be found in the Insider Trading History of Peter W. Sonsini table.

Insider Trading History of Peter W. Sonsini

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.

Peter W. Sonsini Trading Performance

GuruFocus tracks the stock performance after each of Peter W. Sonsini's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Peter W. Sonsini is 5.15%. GuruFocus also compares Peter W. Sonsini's trading performance to market benchmark return within the same time period. The performance of stocks bought by Peter W. Sonsini within 3 months outperforms 24 times out of 45 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Peter W. Sonsini'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 Peter W. Sonsini

Average Return

LIMIT
Average return per transaction

Outperforming Transactions

LIMIT
7 out of 45 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(%) 7.17 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) 6.06 LIMIT LIMIT LIMIT LIMIT LIMIT

Peter W. Sonsini Ownership Network

Ownership Network List of Peter W. Sonsini

No Data

Ownership Network Relation of Peter W. Sonsini

Insider Network Chart

Peter W. Sonsini Owned Company Details

What does Eargo Inc do?

Who are the key executives at Eargo Inc?

Peter W. Sonsini is the 10 percent owner of Eargo Inc. Other key executives at Eargo Inc include Chief Accounting Officer Mark Thorpe , Chief Operating Officer William Brownie , and Chief Financial Officer Adam Laponis .

Eargo Inc (EAR) Insider Trades Summary

Over the past 18 months, Peter W. Sonsini made no insider transaction in Eargo Inc (EAR). Other recent insider transactions involving Eargo Inc (EAR) include a net sale of 1,514 shares made by William Brownie , a net sale of 19 shares made by Adam Laponis , and a net sale of 3 shares made by Mark Thorpe .

In summary, during the past 3 months, insiders sold 0 shares of Eargo Inc (EAR) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 1,536 shares of Eargo Inc (EAR) were sold and 0 shares were bought by its insiders, resulting in a net sale of 1,536 shares.

Eargo Inc (EAR)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Eargo Inc Insider Transactions

No Available Data

Peter W. Sonsini Mailing Address

Above is the net worth, insider trading, and ownership report for Peter W. Sonsini. You might contact Peter W. Sonsini via mailing address: 2855 Sand Hill Road, Menlo Park Ca 94025.

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