Stephen A Block - Net Worth and Insider Trading
Stephen A Block Net Worth
The estimated net worth of Stephen A Block is at least $741,121 dollars as of 2025-07-24. Stephen A Block is the Senior Vice President of International Flavors & Fragrances Inc and owns about 7,694 shares of International Flavors & Fragrances Inc (IFF) stock worth over $583,128. Stephen A Block is the Director of Niagen Bioscience Inc and owns about 16,667 shares of Niagen Bioscience Inc (NAGE) stock worth over $156,503. Stephen A Block is also the Director of Senomyx Inc and owns about 1,000 shares of Senomyx Inc (SNMX) stock worth over $1,490. Details can be seen in Stephen A Block'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 Stephen A Block has not made any transactions after 2021-03-16 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Stephen A Block
Stephen A Block Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Stephen A Block owns 3 companies in total, including Niagen Bioscience Inc (NAGE) , Senomyx Inc (SNMX) , and International Flavors & Fragrances Inc (IFF) .
Click here to see the complete history of Stephen A Block’s form 4 insider trades.
Insider Ownership Summary of Stephen A Block
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| NAGE | Niagen Bioscience Inc | 2021-03-16 | director |
| SNMX | Senomyx Inc | 2018-11-02 | director |
| IFF | International Flavors & Fragrances Inc | 2003-08-15 | Senior Vice President |
Stephen A Block Latest Holdings Summary
Stephen A Block currently owns a total of 3 stocks. Among these stocks, Stephen A Block owns 7,694 shares of International Flavors & Fragrances Inc (IFF) as of August 15, 2003, with a value of $583,128 and a weighting of 78.68%. Stephen A Block owns 16,667 shares of Niagen Bioscience Inc (NAGE) as of March 16, 2021, with a value of $156,503 and a weighting of 21.12%. Stephen A Block also owns 1,000 shares of Senomyx Inc (SNMX) as of June 10, 2014, with a value of $1,490 and a weighting of 0.2%.
Latest Holdings of Stephen A Block
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| IFF | International Flavors & Fragrances Inc | 2003-08-15 | 7,694 | 75.79 | 583,128 |
| NAGE | Niagen Bioscience Inc | 2021-03-16 | 16,667 | 9.39 | 156,503 |
| SNMX | Senomyx Inc | 2014-06-10 | 1,000 | 1.49 | 1,490 |
Holding Weightings of Stephen A Block
Stephen A Block Form 4 Trading Tracker
According to the SEC Form 4 filings, Stephen A Block has made a total of 0 transactions in International Flavors & Fragrances Inc (IFF) over the past 5 years. The most-recent trade in International Flavors & Fragrances Inc is the sale of 114,375 shares on August 15, 2003, which brought Stephen A Block around $3 Million.
According to the SEC Form 4 filings, Stephen A Block has made a total of 1 transactions in Niagen Bioscience Inc (NAGE) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Niagen Bioscience Inc is the sale of 52,500 shares on March 16, 2021, which brought Stephen A Block around $625,800.
According to the SEC Form 4 filings, Stephen A Block has made a total of 0 transactions in Senomyx Inc (SNMX) over the past 5 years. The most-recent trade in Senomyx Inc is the sale of 28,750 shares on June 10, 2014, which brought Stephen A Block around $236,038.
Insider Trading History of Stephen A Block
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Stephen A Block Trading Performance
Stephen A Block Ownership Network
Ownership Network List of Stephen A Block
Ownership Network Relation of Stephen A Block
Stephen A Block Owned Company Details
What does Niagen Bioscience Inc do?
Who are the key executives at Niagen Bioscience Inc?
Stephen A Block is the director of Niagen Bioscience Inc. Other key executives at Niagen Bioscience Inc include director & 10 percent owner & Chief Executive Officer Jaksch Frank L Jr , SVP Finance / Interim CFO Brianna Gerber , and 10 percent owner Champion River Ventures Ltd .
Niagen Bioscience Inc (NAGE) Insider Trades Summary
Over the past 18 months, Stephen A Block made no insider transaction in Niagen Bioscience Inc (NAGE). Other recent insider transactions involving Niagen Bioscience Inc (NAGE) include a net sale of 37,161 shares made by Jaksch Frank L Jr , a net sale of 23,000 shares made by Kristin Patrick , and a net purchase of 2,907 shares made by Ozan Pamir .
In summary, during the past 3 months, insiders sold 0 shares of Niagen Bioscience Inc (NAGE) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 60,161 shares of Niagen Bioscience Inc (NAGE) were sold and 3,180 shares were bought by its insiders, resulting in a net sale of 56,981 shares.
Niagen Bioscience Inc (NAGE)'s detailed insider trading history can be found in Insider Trading Tracker table.
Niagen Bioscience Inc Insider Transactions
Stephen A Block Mailing Address
Above is the net worth, insider trading, and ownership report for Stephen A Block. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Stephen A Block's mailing address is: New York Ny 10019.
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