Mark Eisner - Net Worth and Insider Trading
Mark Eisner Net Worth
The estimated net worth of Mark Eisner is at least $2 Million dollars as of 2026-07-03. Mark Eisner is the EVP and Chief Medical Officer of Vir Biotechnology Inc and owns about 154,024 shares of Vir Biotechnology Inc (VIR) stock worth over $2 Million. Mark Eisner is also the EVP, Chief Medical Officer of Kyntra Bio Inc and owns about 6,514 shares of Kyntra Bio Inc (KYNB) stock worth over $50,288. Details can be seen in Mark Eisner'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 Mark Eisner has not made any transactions after 2026-02-25 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Mark Eisner
Mark Eisner Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Mark Eisner owns 3 companies in total, including Kyntra Bio Inc (KYNB) , Vir Biotechnology Inc (VIR) , and Zura Bio Ltd (ZURA) .
Click here to see the complete history of Mark Eisner’s form 4 insider trades.
Insider Ownership Summary of Mark Eisner
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| KYNB | Kyntra Bio Inc | 2023-06-07 | Incoming Chief Medical Officer |
| VIR | Vir Biotechnology Inc | 2026-02-25 | EVP and Chief Medical Officer |
| ZURA | Zura Bio Ltd | 2026-02-21 | director |
Mark Eisner Latest Holdings Summary
Mark Eisner currently owns a total of 2 stocks. Among these stocks, Mark Eisner owns 154,024 shares of Vir Biotechnology Inc (VIR) as of February 25, 2026, with a value of $2 Million and a weighting of 96.85%. Mark Eisner also owns 6,514 shares of Kyntra Bio Inc (KYNB) as of June 7, 2023, with a value of $50,288 and a weighting of 3.15%.
Latest Holdings of Mark Eisner
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| VIR | Vir Biotechnology Inc | 2026-02-25 | 154,024 | 10.04 | 1,546,401 |
| KYNB | Kyntra Bio Inc | 2023-06-07 | 6,514 | 7.72 | 50,288 |
Holding Weightings of Mark Eisner
Mark Eisner Form 4 Trading Tracker
According to the SEC Form 4 filings, Mark Eisner has made a total of 3 transactions in Vir Biotechnology Inc (VIR) over the past 5 years, including 0 buys and 3 sells. The most-recent trade in Vir Biotechnology Inc is the sale of 3,505 shares on February 25, 2026, which brought Mark Eisner around $33,963.
According to the SEC Form 4 filings, Mark Eisner has made a total of 4 transactions in Kyntra Bio Inc (KYNB) over the past 5 years, including 0 buys and 4 sells. The most-recent trade in Kyntra Bio Inc is the sale of 82 shares on June 7, 2023, which brought Mark Eisner around $34,796.
Insider Trading History of Mark Eisner
* 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.
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Mark Eisner Trading Performance
Mark Eisner Ownership Network
Ownership Network List of Mark Eisner
Ownership Network Relation of Mark Eisner
Mark Eisner Owned Company Details
What does Kyntra Bio Inc do?
Who are the key executives at Kyntra Bio Inc?
Mark Eisner is the Incoming Chief Medical Officer of Kyntra Bio Inc. Other key executives at Kyntra Bio Inc include Chief Commercial Officer Thane Wettig , Chief Financial Officer David Delucia , and Chief Medical Officer Deyaa Adib .
Kyntra Bio Inc (KYNB) Insider Trades Summary
Over the past 18 months, Mark Eisner made no insider transaction in Kyntra Bio Inc (KYNB). Other recent insider transactions involving Kyntra Bio Inc (KYNB) include a net purchase of 323,567 shares made by James A Schoeneck , and a net purchase of 148,700 shares made by Thane Wettig .
In summary, during the past 3 months, insiders sold 0 shares of Kyntra Bio Inc (KYNB) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Kyntra Bio Inc (KYNB) were sold and 45,067 shares were bought by its insiders, resulting in a net purchase of 45,067 shares.
Kyntra Bio Inc (KYNB)'s detailed insider trading history can be found in Insider Trading Tracker table.
Kyntra Bio Inc Insider Transactions
Mark Eisner Mailing Address
Above is the net worth, insider trading, and ownership report for Mark Eisner. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Mark Eisner's mailing address is: San Francisco Ca 94158.
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