Abby F Kohnstamm - Net Worth and Insider Trading
Abby F Kohnstamm Net Worth
The estimated net worth of Abby F Kohnstamm is at least $20 Million dollars as of 2025-04-28. Abby F Kohnstamm is the Senior Vice President of International Business Machines Corp and owns about 40,713 shares of International Business Machines Corp (IBM) stock worth over $9 Million. Abby F Kohnstamm is the Director of Progressive Corp and owns about 29,830 shares of Progressive Corp (PGR) stock worth over $8 Million. Abby F Kohnstamm is also the Director of Tiffany & Co and owns about 21,539 shares of Tiffany & Co (TIF) stock worth over $3 Million. Details can be seen in Abby F Kohnstamm'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 Abby F Kohnstamm has not made any transactions after 2019-06-07 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Abby F Kohnstamm
Abby F Kohnstamm Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Abby F Kohnstamm owns 5 companies in total, including International Business Machines Corp (IBM) , Pitney Bowes Inc (PBI) , and Progressive Corp (PGR) among others .
Click here to see the complete history of Abby F Kohnstamm’s form 4 insider trades.
Insider Ownership Summary of Abby F Kohnstamm
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
IBM | International Business Machines Corp | 2005-11-30 | Senior Vice President |
PBI | Pitney Bowes Inc | 2013-06-17 | Exec VP & Chief Marketing Ofcr |
PGR | Progressive Corp | 2010-05-06 | director |
![]() | ![]() | 2012-01-01 | director |
![]() | ![]() | 2019-06-07 | director |
Abby F Kohnstamm Latest Holdings Summary
Abby F Kohnstamm currently owns a total of 3 stocks. Among these stocks, Abby F Kohnstamm owns 40,713 shares of International Business Machines Corp (IBM) as of November 30, 2005, with a value of $9 Million and a weighting of 46.84%. Abby F Kohnstamm owns 29,830 shares of Progressive Corp (PGR) as of May 6, 2010, with a value of $8 Million and a weighting of 39.14%. Abby F Kohnstamm also owns 21,539 shares of Tiffany & Co (TIF) as of June 7, 2019, with a value of $3 Million and a weighting of 14.02%.
Latest Holdings of Abby F Kohnstamm
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
IBM | International Business Machines Corp | 2005-11-30 | 40,713 | 232.41 | 9,462,108 |
PGR | Progressive Corp | 2010-05-06 | 29,830 | 265.01 | 7,905,248 |
TIF | Tiffany & Co | 2019-06-07 | 21,539 | 131.46 | 2,831,517 |
Holding Weightings of Abby F Kohnstamm
Abby F Kohnstamm Form 4 Trading Tracker
According to the SEC Form 4 filings, Abby F Kohnstamm has made a total of 0 transactions in International Business Machines Corp (IBM) over the past 5 years. The most-recent trade in International Business Machines Corp is the sale of 10,000 shares on November 30, 2005, which brought Abby F Kohnstamm around $888,700.
According to the SEC Form 4 filings, Abby F Kohnstamm has made a total of 0 transactions in Progressive Corp (PGR) over the past 5 years. The most-recent trade in Progressive Corp is the sale of 10,483 shares on May 6, 2010, which brought Abby F Kohnstamm around $213,015.
According to the SEC Form 4 filings, Abby F Kohnstamm has made a total of 0 transactions in Tiffany & Co (TIF) over the past 5 years. The most-recent trade in Tiffany & Co is the sale of 11,912 shares on June 7, 2019, which brought Abby F Kohnstamm around $1 Million.
Insider Trading History of Abby F Kohnstamm
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Abby F Kohnstamm Trading Performance
Abby F Kohnstamm Ownership Network
Ownership Network List of Abby F Kohnstamm
Ownership Network Relation of Abby F Kohnstamm

Abby F Kohnstamm Owned Company Details
What does International Business Machines Corp do?
Who are the key executives at International Business Machines Corp?
Abby F Kohnstamm is the Senior Vice President of International Business Machines Corp. Other key executives at International Business Machines Corp include Senior Vice President Nickle Jaclyn Lamoreaux , Senior Vice President Michelle H Browdy , and Vice President and Controller James J Kavanaugh .
International Business Machines Corp (IBM) Insider Trades Summary
Over the past 18 months, Abby F Kohnstamm made no insider transaction in International Business Machines Corp (IBM). Other recent insider transactions involving International Business Machines Corp (IBM) include a net sale of 26,543 shares made by , a net sale of 9,800 shares made by Michelle H Browdy , and a net sale of 3,600 shares made by Nickle Jaclyn Lamoreaux .
In summary, during the past 3 months, insiders sold 26,543 shares of International Business Machines Corp (IBM) in total and bought 1,200 shares, with a net sale of 25,343 shares. During the past 18 months, 39,943 shares of International Business Machines Corp (IBM) were sold and 2,136 shares were bought by its insiders, resulting in a net sale of 37,807 shares.
International Business Machines Corp (IBM)'s detailed insider trading history can be found in Insider Trading Tracker table.
International Business Machines Corp Insider Transactions
Abby F Kohnstamm Mailing Address
Above is the net worth, insider trading, and ownership report for Abby F Kohnstamm. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Abby F Kohnstamm's mailing address is: New York Ny 10022.