Markos I Tambakeras - Net Worth and Insider Trading
Markos I Tambakeras Net Worth
The estimated net worth of Markos I Tambakeras is at least $19 Million dollars as of 2025-04-25. Markos I Tambakeras is the Executive Chairman of Kennametal Inc and owns about 431,448 shares of Kennametal Inc (KMT) stock worth over $8 Million. Markos I Tambakeras is the Director of Xylem Inc and owns about 66,637 shares of Xylem Inc (XYL) stock worth over $8 Million. Markos I Tambakeras is also the Director of ITT Inc and owns about 19,973 shares of ITT Inc (ITT) stock worth over $3 Million. Besides these, Markos I Tambakeras also holds Parker Hannifin Corp (PH) . Details can be seen in Markos I Tambakeras'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 Markos I Tambakeras has not made any transactions after 2021-09-13 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Markos I Tambakeras
Markos I Tambakeras Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Markos I Tambakeras owns 5 companies in total, including Xylem Inc (XYL) , ITT Inc (ITT) , and Parker Hannifin Corp (PH) among others .
Click here to see the complete history of Markos I Tambakeras’s form 4 insider trades.
Markos I Tambakeras Latest Holdings Summary
Markos I Tambakeras currently owns a total of 4 stocks. Among these stocks, Markos I Tambakeras owns 431,448 shares of Kennametal Inc (KMT) as of November 29, 2006, with a value of $8 Million and a weighting of 44.84%. Markos I Tambakeras owns 66,637 shares of Xylem Inc (XYL) as of September 13, 2021, with a value of $8 Million and a weighting of 40.66%. Markos I Tambakeras also owns 19,973 shares of ITT Inc (ITT) as of November 9, 2012, with a value of $3 Million and a weighting of 14.5%. The other 1 stocks Parker Hannifin Corp (PH) have a combined weighting of 0% among all his current holdings.
Latest Holdings of Markos I Tambakeras
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
KMT | Kennametal Inc | 2006-11-29 | 431,448 | 19.69 | 8,495,211 |
XYL | Xylem Inc | 2021-09-13 | 66,637 | 115.62 | 7,704,570 |
ITT | ITT Inc | 2012-11-09 | 19,973 | 137.53 | 2,746,887 |
PH | Parker Hannifin Corp | 2011-02-10 | 0 | 596.81 | 0 |
Holding Weightings of Markos I Tambakeras
Markos I Tambakeras Form 4 Trading Tracker
According to the SEC Form 4 filings, Markos I Tambakeras has made a total of 0 transactions in Kennametal Inc (KMT) over the past 5 years. The most-recent trade in Kennametal Inc is the sale of 78,600 shares on November 29, 2006, which brought Markos I Tambakeras around $2 Million.
According to the SEC Form 4 filings, Markos I Tambakeras has made a total of 5 transactions in Xylem Inc (XYL) over the past 5 years, including 0 buys and 5 sells. The most-recent trade in Xylem Inc is the sale of 5,000 shares on September 13, 2021, which brought Markos I Tambakeras around $659,800.
According to the SEC Form 4 filings, Markos I Tambakeras has made a total of 0 transactions in ITT Inc (ITT) over the past 5 years. The most-recent trade in ITT Inc is the sale of 2,032 shares on November 9, 2012, which brought Markos I Tambakeras around $44,216.
More details on Markos I Tambakeras's insider transactions can be found in the Insider Trading History of Markos I Tambakeras table.Insider Trading History of Markos I Tambakeras
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Markos I Tambakeras Trading Performance
Markos I Tambakeras Ownership Network
Ownership Network List of Markos I Tambakeras
Ownership Network Relation of Markos I Tambakeras

Markos I Tambakeras Owned Company Details
What does Xylem Inc do?
Who are the key executives at Xylem Inc?
Markos I Tambakeras is the director of Xylem Inc. Other key executives at Xylem Inc include Chief Accounting Officer Geri-michelle Mcshane , Senior Vice President Dorothy Trefon Capers , and SVP & President & IS&S Rodney Aulick .
Xylem Inc (XYL) Insider Trades Summary
Over the past 18 months, Markos I Tambakeras made no insider transaction in Xylem Inc (XYL). Other recent insider transactions involving Xylem Inc (XYL) include a net sale of 7,397 shares made by Geri-michelle Mcshane , a net sale of 45,670 shares made by Rodney Aulick , and a net sale of 4,760 shares made by Victoria D Harker .
In summary, during the past 3 months, insiders sold 16,145 shares of Xylem Inc (XYL) in total and bought 0 shares, with a net sale of 16,145 shares. During the past 18 months, 184,117 shares of Xylem Inc (XYL) were sold and 4 shares were bought by its insiders, resulting in a net sale of 184,113 shares.
Xylem Inc (XYL)'s detailed insider trading history can be found in Insider Trading Tracker table.
Xylem Inc Insider Transactions
Markos I Tambakeras Mailing Address
Above is the net worth, insider trading, and ownership report for Markos I Tambakeras. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Markos I Tambakeras's mailing address is: White Plains Ny 10604.