Alexander J Denner - Net Worth and Insider Trading

Alexander J Denner Net Worth

The estimated net worth of Alexander J Denner is at least $988 Million dollars as of 2025-07-23. Alexander J Denner is the Director of The Medicines Co and owns about 4,216,092 shares of The Medicines Co (MDCO) stock worth over $358 Million. Alexander J Denner is the Director of ARIAD Pharmaceuticals Inc and owns about 12,000,000 shares of ARIAD Pharmaceuticals Inc (ARIA) stock worth over $288 Million. Alexander J Denner is also the Director of Bioverativ Inc and owns about 1,170,001 shares of Bioverativ Inc (BIVV) stock worth over $123 Million. Besides these, Alexander J Denner also holds Innoviva Inc (INVA) , Biogen Inc (BIIB) , Ironwood Pharmaceuticals Inc (IRWD) , Iterum Therapeutics PLC (ITRM) , VIVUS Inc (VVUSQ) , Seelos Therapeutics Inc (SEELQ) . Details can be seen in Alexander J Denner'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 Alexander J Denner has not made any transactions after 2025-03-06 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Alexander J Denner

Alexander J Denner Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Alexander J Denner owns 14 companies in total, including Biogen Inc (BIIB) , The Medicines Co (MDCO) , and Regulus Therapeutics Inc (RGLS) among others .

Click here to see the complete history of Alexander J Denner’s form 4 insider trades.

Insider Ownership Summary of Alexander J Denner

Ticker	Company	Transaction Date	Type of Owner
BIIB	Biogen Inc	2019-05-02	director
MDCO	The Medicines Co	2020-01-06	director
RGLS	Regulus Therapeutics Inc	2019-05-07	10 percent owner
		2017-08-31	10 percent owner
		2018-03-08	director
		2017-02-16	director
		2015-10-30	director
		2009-05-21	director
		2006-10-26	director
		2020-10-20	10 percent owner
		2021-03-10	director
		2021-02-12	10 percent owner
		2020-10-20	10 percent owner
		2025-03-06	10 percent owner

Alexander J Denner Latest Holdings Summary

Alexander J Denner currently owns a total of 9 stocks. Among these stocks, Alexander J Denner owns 4,216,092 shares of The Medicines Co (MDCO) as of June 28, 2019, with a value of $358 Million and a weighting of 36.23%. Alexander J Denner owns 12,000,000 shares of ARIAD Pharmaceuticals Inc (ARIA) as of February 20, 2014, with a value of $288 Million and a weighting of 29.14%. Alexander J Denner also owns 1,170,001 shares of Bioverativ Inc (BIVV) as of May 30, 2017, with a value of $123 Million and a weighting of 12.43%. The other 6 stocks Innoviva Inc (INVA) , Biogen Inc (BIIB) , Ironwood Pharmaceuticals Inc (IRWD) , Iterum Therapeutics PLC (ITRM) , VIVUS Inc (VVUSQ) , Seelos Therapeutics Inc (SEELQ) have a combined weighting of 22.21% among all his current holdings.

Latest Holdings of Alexander J Denner

Ticker	Company	Latest Transaction Date	Shares Owned	Current Price ($)	Current Value ($)
MDCO	The Medicines Co	2019-06-28	4,216,092	84.90	357,946,211
ARIA	ARIAD Pharmaceuticals Inc	2014-02-20	12,000,000	23.99	287,880,000
BIVV	Bioverativ Inc	2017-05-30	1,170,001	104.98	122,826,705
INVA	Innoviva Inc	2025-03-06	5,658,705	19.28	109,099,832
BIIB	Biogen Inc	2019-05-02	653,909	127.85	83,602,266
IRWD	Ironwood Pharmaceuticals Inc	2021-03-10	32,742,844	0.78	25,539,418
ITRM	Iterum Therapeutics PLC	2021-02-12	1,374,464	0.83	1,140,805
VVUSQ	VIVUS Inc	2013-11-11	257,394	0.12	30,218
SEELQ	Seelos Therapeutics Inc	2017-08-31	13	0.00	0

Holding Weightings of Alexander J Denner

Alexander J Denner Form 4 Trading Tracker

According to the SEC Form 4 filings, Alexander J Denner has made a total of 0 transactions in The Medicines Co (MDCO) over the past 5 years. The most-recent trade in The Medicines Co is the acquisition of 50,000 shares on June 28, 2019, which cost Alexander J Denner around $2 Million.

According to the SEC Form 4 filings, Alexander J Denner has made a total of 0 transactions in ARIAD Pharmaceuticals Inc (ARIA) over the past 5 years. The most-recent trade in ARIAD Pharmaceuticals Inc is the sale of 0 shares on February 20, 2014, which brought Alexander J Denner around $0.

According to the SEC Form 4 filings, Alexander J Denner has made a total of 0 transactions in Bioverativ Inc (BIVV) over the past 5 years. The most-recent trade in Bioverativ Inc is the acquisition of 90,000 shares on May 30, 2017, which cost Alexander J Denner around $5 Million.

More details on Alexander J Denner's insider transactions can be found in the Insider Trading History of Alexander J Denner table.

Insider Trading History of Alexander J Denner

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.

Total 0

Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

Alexander J Denner Trading Performance

GuruFocus tracks the stock performance after each of Alexander J Denner's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Alexander J Denner is 11.88%. GuruFocus also compares Alexander J Denner's trading performance to market benchmark return within the same time period. The performance of stocks bought by Alexander J Denner within 3 months outperforms 17 times out of 28 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Alexander J Denner's insider trading performs compared to the benchmark.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of Alexander J Denner

Average Return

Average return per transaction

Outperforming Transactions

16 out of 21 outperforming transactions.

Each transaction is measured over a period and compared to .

	1 Month	3 Months	6 Months	1 Year	2 Years	3 Years
Return(%)	3.41
Relative Return to S&P 500(%)	0.43

Alexander J Denner Ownership Network

Ownership Network List of Alexander J Denner

No Data

Ownership Network Relation of Alexander J Denner

Alexander J Denner Owned Company Details

What does Biogen Inc do?

Who are the key executives at Biogen Inc?

Alexander J Denner is the director of Biogen Inc. Other key executives at Biogen Inc include Head of Alzheimer's Disease Rachid Izzar , Head of Development Priya Singhal , and Head of Research Jane Grogan .

Biogen Inc (BIIB) Insider Trades Summary

Over the past 18 months, Alexander J Denner made no insider transaction in Biogen Inc (BIIB). Other recent insider transactions involving Biogen Inc (BIIB) include a net sale of 5,863 shares made by Priya Singhal , a net sale of 8,760 shares made by Stephen A Sherwin , and a net sale of 2,223 shares made by Rachid Izzar .

In summary, during the past 3 months, insiders sold 6,029 shares of Biogen Inc (BIIB) in total and bought 1,235 shares, with a net sale of 4,794 shares. During the past 18 months, 16,846 shares of Biogen Inc (BIIB) were sold and 1,690 shares were bought by its insiders, resulting in a net sale of 15,156 shares.

Biogen Inc (BIIB)'s detailed insider trading history can be found in Insider Trading Tracker table.

Biogen Inc Insider Transactions

No Available Data

What does The Medicines Co do?

Who are the key executives at The Medicines Co?

Alexander J Denner is the director of The Medicines Co. Other key executives at The Medicines Co include Chief Development Officer Peter Wijngaard , EVP & Chief Corp. Dev. Officer Christopher T Cox , and director & Executive Chairman Fredric N Eshelman .

The Medicines Co (MDCO) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of The Medicines Co (MDCO) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of The Medicines Co (MDCO) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

The Medicines Co (MDCO)'s detailed insider trading history can be found in Insider Trading Tracker table.

The Medicines Co Insider Transactions

No Available Data

What does Regulus Therapeutics Inc do?

Who are the key executives at Regulus Therapeutics Inc?

Alexander J Denner is the 10 percent owner of Regulus Therapeutics Inc. Other key executives at Regulus Therapeutics Inc include President & Head of R & D Preston Klassen , Chief Operating Officer Joseph P Hagan , and Chief Financial Officer Crispina Calsada .

Regulus Therapeutics Inc (RGLS) Insider Trades Summary

Over the past 18 months, Alexander J Denner made no insider transaction in Regulus Therapeutics Inc (RGLS). Other recent insider transactions involving Regulus Therapeutics Inc (RGLS) include a net sale of 77,054 shares made by Joseph P Hagan , a net sale of 19,445 shares made by Preston Klassen , and a net sale of 43,804 shares made by Crispina Calsada .

In summary, during the past 3 months, insiders sold 0 shares of Regulus Therapeutics Inc (RGLS) in total and bought 12,000 shares, with a net purchase of 12,000 shares. During the past 18 months, 245,938 shares of Regulus Therapeutics Inc (RGLS) were sold and 85,610 shares were bought by its insiders, resulting in a net sale of 160,328 shares.

Regulus Therapeutics Inc (RGLS)'s detailed insider trading history can be found in Insider Trading Tracker table.

Regulus Therapeutics Inc Insider Transactions

No Available Data

What does Seelos Therapeutics Inc do?

Who are the key executives at Seelos Therapeutics Inc?

Alexander J Denner is the 10 percent owner of Seelos Therapeutics Inc. Other key executives at Seelos Therapeutics Inc include director & See Remarks Raj Mehra , Chief Financial Officer Michael Joseph Golembiewski , and SVP & Chief Business Officer Neil Morton .

Seelos Therapeutics Inc (SEELQ) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Seelos Therapeutics Inc (SEELQ) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Seelos Therapeutics Inc (SEELQ) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Seelos Therapeutics Inc (SEELQ)'s detailed insider trading history can be found in Insider Trading Tracker table.

Seelos Therapeutics Inc Insider Transactions

No Available Data

What does Bioverativ Inc do?

Who are the key executives at Bioverativ Inc?

Alexander J Denner is the director of Bioverativ Inc. Other key executives at Bioverativ Inc include director & Chief Executive Officer John Cox , EVP & CFO and Treasurer John Greene , and Chief Accounting Officer Diantha Duvall .

Bioverativ Inc (BIVV) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Bioverativ Inc (BIVV) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Bioverativ Inc (BIVV) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Bioverativ Inc (BIVV)'s detailed insider trading history can be found in Insider Trading Tracker table.

Bioverativ Inc Insider Transactions

No Available Data

What does ARIAD Pharmaceuticals Inc do?

Who are the key executives at ARIAD Pharmaceuticals Inc?

Alexander J Denner is the director of ARIAD Pharmaceuticals Inc. Other key executives at ARIAD Pharmaceuticals Inc include EVP & CFO & Treasurer Manmeet Singh Soni , SVP & Chief Business Officer Hugh M Cole , and director & President and CEO Paris Panayiotopoulos .

ARIAD Pharmaceuticals Inc (ARIA) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of ARIAD Pharmaceuticals Inc (ARIA) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of ARIAD Pharmaceuticals Inc (ARIA) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

ARIAD Pharmaceuticals Inc (ARIA)'s detailed insider trading history can be found in Insider Trading Tracker table.

ARIAD Pharmaceuticals Inc Insider Transactions

No Available Data

What does VIVUS Inc do?

Who are the key executives at VIVUS Inc?

Alexander J Denner is the director of VIVUS Inc. Other key executives at VIVUS Inc include director & Chief Executive Officer John P. Amos , Chief Medical Officer Santosh T Varghese , and Chief Financial Officer & CAO Mark K Oki .

VIVUS Inc (VVUSQ) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of VIVUS Inc (VVUSQ) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of VIVUS Inc (VVUSQ) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

VIVUS Inc (VVUSQ)'s detailed insider trading history can be found in Insider Trading Tracker table.

VIVUS Inc Insider Transactions

No Available Data

What does Enzon Pharmaceuticals Inc do?

Who are the key executives at Enzon Pharmaceuticals Inc?

Alexander J Denner is the director of Enzon Pharmaceuticals Inc. Other key executives at Enzon Pharmaceuticals Inc include other: See Footnote 1 Family Fund Couchman , other: See explanation of responses Brian James Harper , and other: See explanation of responses Harper Asset Management Llc .

Enzon Pharmaceuticals Inc (ENZN) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Enzon Pharmaceuticals Inc (ENZN) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Enzon Pharmaceuticals Inc (ENZN) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Enzon Pharmaceuticals Inc (ENZN)'s detailed insider trading history can be found in Insider Trading Tracker table.

Enzon Pharmaceuticals Inc Insider Transactions

No Available Data

What does Savara Inc do?

Who are the key executives at Savara Inc?

Alexander J Denner is the director of Savara Inc. Other key executives at Savara Inc include Chief Financial Officer David L Lowrance , 10 percent owner Rick Yang , and 10 percent owner Forest Baskett .

Savara Inc (SVRA) Insider Trades Summary

Over the past 18 months, Alexander J Denner made no insider transaction in Savara Inc (SVRA). Other recent insider transactions involving Savara Inc (SVRA) include a net purchase of 250,000 shares made by David A Ramsay , a net purchase of 40,225 shares made by Richard J Hawkins , and a net purchase of 30,000 shares made by Joseph S Mccracken .

In summary, during the past 3 months, insiders sold 0 shares of Savara Inc (SVRA) in total and bought 58,225 shares, with a net purchase of 58,225 shares. During the past 18 months, 87,702 shares of Savara Inc (SVRA) were sold and 328,225 shares were bought by its insiders, resulting in a net purchase of 240,523 shares.

Savara Inc (SVRA)'s detailed insider trading history can be found in Insider Trading Tracker table.

Savara Inc Insider Transactions

No Available Data

What does Sarissa Capital Acquisition Corp do?

Who are the key executives at Sarissa Capital Acquisition Corp?

Alexander J Denner is the 10 percent owner of Sarissa Capital Acquisition Corp. Other key executives at Sarissa Capital Acquisition Corp include Senior Managing Director Kostas D Odysseas , Senior Managing Director Mark Dipaolo , and 10 percent owner Sarissa Capital Management Lp .

Sarissa Capital Acquisition Corp (SRSAU) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Sarissa Capital Acquisition Corp (SRSAU) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Sarissa Capital Acquisition Corp (SRSAU) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Sarissa Capital Acquisition Corp (SRSAU)'s detailed insider trading history can be found in Insider Trading Tracker table.

Sarissa Capital Acquisition Corp Insider Transactions

No Available Data

What does Ironwood Pharmaceuticals Inc do?

Who are the key executives at Ironwood Pharmaceuticals Inc?

Alexander J Denner is the director of Ironwood Pharmaceuticals Inc. Other key executives at Ironwood Pharmaceuticals Inc include Chief Commercial Officer Thomas A Mccourt , Principal Accounting Officer Ronald Silver , and Chief Legal Officer Minardo John .

Ironwood Pharmaceuticals Inc (IRWD) Insider Trades Summary

Over the past 18 months, Alexander J Denner made no insider transaction in Ironwood Pharmaceuticals Inc (IRWD). Other recent insider transactions involving Ironwood Pharmaceuticals Inc (IRWD) include a net sale of 397,199 shares made by Thomas A Mccourt , a net sale of 113,632 shares made by Minardo John , and a net sale of 96,015 shares made by Michael Shetzline .

In summary, during the past 3 months, insiders sold 15,916 shares of Ironwood Pharmaceuticals Inc (IRWD) in total and bought 0 shares, with a net sale of 15,916 shares. During the past 18 months, 796,222 shares of Ironwood Pharmaceuticals Inc (IRWD) were sold and 17,604 shares were bought by its insiders, resulting in a net sale of 778,618 shares.

Ironwood Pharmaceuticals Inc (IRWD)'s detailed insider trading history can be found in Insider Trading Tracker table.

Ironwood Pharmaceuticals Inc Insider Transactions

No Available Data

What does Iterum Therapeutics PLC do?

Who are the key executives at Iterum Therapeutics PLC?

Alexander J Denner is the 10 percent owner of Iterum Therapeutics PLC. Other key executives at Iterum Therapeutics PLC include Chief Scientific Officer Michael W. Dunne , director & President & CEO Fishman Corey N. , and Chief Medical Officer Sailaja Puttagunta .

Iterum Therapeutics PLC (ITRM) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Iterum Therapeutics PLC (ITRM) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Iterum Therapeutics PLC (ITRM) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Iterum Therapeutics PLC (ITRM)'s detailed insider trading history can be found in Insider Trading Tracker table.

Iterum Therapeutics PLC Insider Transactions

No Available Data

What does Sarissa Capital Acquisition Corp do?

Who are the key executives at Sarissa Capital Acquisition Corp?

Sarissa Capital Acquisition Corp (SRSA) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Sarissa Capital Acquisition Corp (SRSA) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Sarissa Capital Acquisition Corp (SRSA) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Sarissa Capital Acquisition Corp (SRSA)'s detailed insider trading history can be found in Insider Trading Tracker table.

Sarissa Capital Acquisition Corp Insider Transactions

No Available Data

What does Innoviva Inc do?

Who are the key executives at Innoviva Inc?

Alexander J Denner is the 10 percent owner of Innoviva Inc. Other key executives at Innoviva Inc include Chief Accounting Officer Marianne Zhen , Chief Financial Officer Stephen Basso , and Chief Medical Officer Margaret Koziel .

Innoviva Inc (INVA) Insider Trades Summary

Over the past 18 months, Alexander J Denner made 1 insider transaction in Innoviva Inc (INVA) with a net sale of 1,618,295.

In summary, during the past 3 months, insiders sold 0 shares of Innoviva Inc (INVA) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 1,618,295 shares of Innoviva Inc (INVA) were sold and 0 shares were bought by its insiders, resulting in a net sale of 1,618,295 shares.

Innoviva Inc (INVA)'s detailed insider trading history can be found in Insider Trading Tracker table.

Innoviva Inc Insider Transactions

No Available Data

Alexander J Denner Mailing Address

Above is the net worth, insider trading, and ownership report for Alexander J Denner. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Alexander J Denner's mailing address is: Greenwich Ct 06830.

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