Masaharu Tanaka - Net Worth and Insider Trading
Masaharu Tanaka Net Worth
The estimated net worth of Masaharu Tanaka is at least $22 Million dollars as of 2025-05-03. Masaharu Tanaka is the Director, 10% Owner of WAVE Life Sciences Ltd and owns about 2,774,118 shares of WAVE Life Sciences Ltd (WVE) stock worth over $22 Million. Details can be seen in Masaharu Tanaka'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 Masaharu Tanaka has not made any transactions after 2017-09-18 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Masaharu Tanaka
Masaharu Tanaka Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Masaharu Tanaka owns 1 companies in total, including WAVE Life Sciences Ltd (WVE) .
Click here to see the complete history of Masaharu Tanaka’s form 4 insider trades.
Insider Ownership Summary of Masaharu Tanaka
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
WVE | WAVE Life Sciences Ltd | 2017-09-18 | director & 10 percent owner |
Masaharu Tanaka Latest Holdings Summary
Masaharu Tanaka currently owns a total of 1 stock. Masaharu Tanaka owns 2,774,118 shares of WAVE Life Sciences Ltd (WVE) as of September 18, 2017, with a value of $22 Million.
Latest Holdings of Masaharu Tanaka
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
WVE | WAVE Life Sciences Ltd | 2017-09-18 | 2,774,118 | 8.10 | 22,470,356 |
Holding Weightings of Masaharu Tanaka
Masaharu Tanaka Form 4 Trading Tracker
According to the SEC Form 4 filings, Masaharu Tanaka has made a total of 0 transactions in WAVE Life Sciences Ltd (WVE) over the past 5 years. The most-recent trade in WAVE Life Sciences Ltd is the sale of 20,747 shares on September 18, 2017, which brought Masaharu Tanaka around $502,285.
Insider Trading History of Masaharu Tanaka
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Masaharu Tanaka Trading Performance
GuruFocus tracks the stock performance after each of Masaharu Tanaka's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Masaharu Tanaka is -39.58%. GuruFocus also compares Masaharu Tanaka's trading performance to market benchmark return within the same time period. The performance of stocks bought by Masaharu Tanaka within 3 months outperforms 0 times out of 1 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Masaharu Tanaka's insider trading performs compared to the benchmark.
Performance of Masaharu Tanaka
Masaharu Tanaka Ownership Network
Ownership Network List of Masaharu Tanaka
Ownership Network Relation of Masaharu Tanaka

Masaharu Tanaka Owned Company Details
What does WAVE Life Sciences Ltd do?
Who are the key executives at WAVE Life Sciences Ltd?
Masaharu Tanaka is the director & 10 percent owner of WAVE Life Sciences Ltd. Other key executives at WAVE Life Sciences Ltd include director & See Remarks Paul Bolno , See Remarks Chris Francis , and 10 percent owner Plc Glaxosmithkline .
WAVE Life Sciences Ltd (WVE) Insider Trades Summary
Over the past 18 months, Masaharu Tanaka made no insider transaction in WAVE Life Sciences Ltd (WVE). Other recent insider transactions involving WAVE Life Sciences Ltd (WVE) include a net sale of 409,099 shares made by Paul Bolno , a net purchase of 6,091,930 shares made by Plc Glaxosmithkline , and a net purchase of 2,000,000 shares made by Ra Capital Healthcare Fund Lp .
In summary, during the past 3 months, insiders sold 179,525 shares of WAVE Life Sciences Ltd (WVE) in total and bought 0 shares, with a net sale of 179,525 shares. During the past 18 months, 697,211 shares of WAVE Life Sciences Ltd (WVE) were sold and 8,091,930 shares were bought by its insiders, resulting in a net purchase of 7,394,719 shares.
WAVE Life Sciences Ltd (WVE)'s detailed insider trading history can be found in Insider Trading Tracker table.
WAVE Life Sciences Ltd Insider Transactions
Masaharu Tanaka Mailing Address
Above is the net worth, insider trading, and ownership report for Masaharu Tanaka. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Masaharu Tanaka's mailing address is: Cambridge Ma 02138.