Michael L Speiser - Net Worth and Insider Trading

Michael L Speiser Net Worth

The estimated net worth of Michael L Speiser is at least $952 Million dollars as of 2025-04-26. Michael L Speiser is the Director of Snowflake Inc and owns about 2,392,214 shares of Snowflake Inc (SNOW) stock worth over $379 Million. Michael L Speiser is the 10% Owner of Forty Seven Inc and owns about 3,030,299 shares of Forty Seven Inc (FTSV) stock worth over $289 Million. Michael L Speiser is also the 10% Owner of Corcept Therapeutics Inc and owns about 3,871,617 shares of Corcept Therapeutics Inc (CORT) stock worth over $278 Million. Besides these, Michael L Speiser also holds Mattersight Corp (MATR) , Pure Storage Inc (PSTG) , Molecular Templates Inc (MTEM) . Details can be seen in Michael L Speiser'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 Michael L Speiser has not made any transactions after 2025-04-04 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Michael L Speiser

Michael L Speiser Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Michael L Speiser owns 10 companies in total, including Snowflake Inc (SNOW) , Pure Storage Inc (PSTG) , and Forty Seven Inc (FTSV) among others .

Click here to see the complete history of Michael L Speiser’s form 4 insider trades.

Insider Ownership Summary of Michael L Speiser

Ticker	Company	Transaction Date	Type of Owner
SNOW	Snowflake Inc	2025-04-04	director & 10 percent owner
PSTG	Pure Storage Inc	2018-07-09	director & 10 percent owner
FTSV	Forty Seven Inc	2018-07-02	10 percent owner
		2017-04-12	10 percent owner
		2017-10-11	10 percent owner
		2017-06-01	10 percent owner
		2014-10-01	10 percent owner
		2013-03-20	10 percent owner
		2009-10-16	10 percent owner
		2010-02-10	10 percent owner

Michael L Speiser Latest Holdings Summary

Michael L Speiser currently owns a total of 6 stocks. Among these stocks, Michael L Speiser owns 2,392,214 shares of Snowflake Inc (SNOW) as of April 4, 2025, with a value of $379 Million and a weighting of 39.79%. Michael L Speiser owns 3,030,299 shares of Forty Seven Inc (FTSV) as of July 2, 2018, with a value of $289 Million and a weighting of 30.39%. Michael L Speiser also owns 3,871,617 shares of Corcept Therapeutics Inc (CORT) as of May 12, 2008, with a value of $278 Million and a weighting of 29.15%. The other 3 stocks Mattersight Corp (MATR) , Pure Storage Inc (PSTG) , Molecular Templates Inc (MTEM) have a combined weighting of 0.66% among all his current holdings.

Latest Holdings of Michael L Speiser

Ticker	Company	Latest Transaction Date	Shares Owned	Current Price ($)	Current Value ($)
SNOW	Snowflake Inc	2025-04-04	2,392,214	158.40	378,926,698
FTSV	Forty Seven Inc	2018-07-02	3,030,299	95.51	289,423,857
CORT	Corcept Therapeutics Inc	2008-05-12	3,871,617	71.71	277,633,655
MATR	Mattersight Corp	2017-06-01	1,218,709	2.68	3,260,047
PSTG	Pure Storage Inc	2018-07-09	66,362	45.70	3,032,743
MTEM	Molecular Templates Inc	2014-10-01	28,650	0.00	3

Holding Weightings of Michael L Speiser

Michael L Speiser Form 4 Trading Tracker

According to the SEC Form 4 filings, Michael L Speiser has made a total of 6 transactions in Snowflake Inc (SNOW) over the past 5 years, including 1 buys and 5 sells. The most-recent trade in Snowflake Inc is the sale of 50,741 shares on April 4, 2025, which brought Michael L Speiser around $7 Million.

According to the SEC Form 4 filings, Michael L Speiser has made a total of 0 transactions in Forty Seven Inc (FTSV) over the past 5 years. The most-recent trade in Forty Seven Inc is the acquisition of 140,480 shares on July 2, 2018, which cost Michael L Speiser around $2 Million.

According to the SEC Form 4 filings, Michael L Speiser has made a total of 0 transactions in Corcept Therapeutics Inc (CORT) over the past 5 years. The most-recent trade in Corcept Therapeutics Inc is the sale of 0 shares on May 12, 2008, which brought Michael L Speiser around $0.

More details on Michael L Speiser's insider transactions can be found in the Insider Trading History of Michael L Speiser table.

Insider Trading History of Michael L Speiser

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.

Michael L Speiser Trading Performance

GuruFocus tracks the stock performance after each of Michael L Speiser's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Michael L Speiser is -3.38%. GuruFocus also compares Michael L Speiser's trading performance to market benchmark return within the same time period. The performance of stocks bought by Michael L Speiser within 3 months outperforms 2 times out of 8 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Michael L Speiser'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 Michael L Speiser

Average Return

Average return per transaction

Outperforming Transactions

2 out of 7 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(%)	8.21
Relative Return to S&P 500(%)	5.35

Michael L Speiser Ownership Network

Ownership Network List of Michael L Speiser

No Data

Ownership Network Relation of Michael L Speiser

Michael L Speiser Owned Company Details

What does Snowflake Inc do?

Who are the key executives at Snowflake Inc?

Michael L Speiser is the director & 10 percent owner of Snowflake Inc. Other key executives at Snowflake Inc include director & 10 percent owner & President of Products Benoit Dageville , 10 percent owner & Chief Financial Officer Michael Scarpelli , and SVP & Product Management Christian Kleinerman .

Snowflake Inc (SNOW) Insider Trades Summary

Over the past 18 months, Michael L Speiser made 2 insider transaction in Snowflake Inc (SNOW) with a net purchase of 25,459. Other recent insider transactions involving Snowflake Inc (SNOW) include a net sale of 230,149 shares made by Christian Kleinerman , a net sale of 299,594 shares made by Benoit Dageville , and a net sale of 1,762,725 shares made by Frank Slootman .

In summary, during the past 3 months, insiders sold 482,558 shares of Snowflake Inc (SNOW) in total and bought 0 shares, with a net sale of 482,558 shares. During the past 18 months, 3,400,422 shares of Snowflake Inc (SNOW) were sold and 110,772 shares were bought by its insiders, resulting in a net sale of 3,289,650 shares.

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

Snowflake Inc Insider Transactions

No Available Data

What does Pure Storage Inc do?

Who are the key executives at Pure Storage Inc?

Michael L Speiser is the director & 10 percent owner of Pure Storage Inc. Other key executives at Pure Storage Inc include Chief Revenue Officer Dan Fitzsimons , Chief Accounting Officer Mona Chu , and director & Chief Technology Officer John Colgrove .

Pure Storage Inc (PSTG) Insider Trades Summary

Over the past 18 months, Michael L Speiser made no insider transaction in Pure Storage Inc (PSTG). Other recent insider transactions involving Pure Storage Inc (PSTG) include a net sale of 1,000,000 shares made by John Colgrove , a net sale of 109,263 shares made by Dan Fitzsimons , and a net sale of 63,958 shares made by Mona Chu .

In summary, during the past 3 months, insiders sold 15,872 shares of Pure Storage Inc (PSTG) in total and bought 0 shares, with a net sale of 15,872 shares. During the past 18 months, 1,805,140 shares of Pure Storage Inc (PSTG) were sold and 0 shares were bought by its insiders, resulting in a net sale of 1,805,140 shares.

Pure Storage Inc (PSTG)'s detailed insider trading history can be found in Insider Trading Tracker table.

Pure Storage Inc Insider Transactions

No Available Data

What does Forty Seven Inc do?

Who are the key executives at Forty Seven Inc?

Michael L Speiser is the 10 percent owner of Forty Seven Inc. Other key executives at Forty Seven Inc include Chief Financial Officer Ann D Rhoads , 10 percent owner Lightspeed General Partner X, L.p. , and 10 percent owner Lightspeed Ultimate General Partner X, Ltd. .

Forty Seven Inc (FTSV) Insider Trades Summary

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

Forty Seven Inc (FTSV)'s detailed insider trading history can be found in Insider Trading Tracker table.

Forty Seven Inc Insider Transactions

No Available Data

What does Yext Inc do?

Who are the key executives at Yext Inc?

Michael L Speiser is the 10 percent owner of Yext Inc. Other key executives at Yext Inc include Chief Accounting Officer Darryl Bond , General Counsel Ho Shin , and director & President Brian Distelburger .

Yext Inc (YEXT) Insider Trades Summary

Over the past 18 months, Michael L Speiser made no insider transaction in Yext Inc (YEXT). Other recent insider transactions involving Yext Inc (YEXT) include a net sale of 300,000 shares made by Michael Walrath , a net sale of 55,000 shares made by Ho Shin , and a net purchase of 32,600 shares made by Seth H. Waugh .

In summary, during the past 3 months, insiders sold 0 shares of Yext Inc (YEXT) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 377,000 shares of Yext Inc (YEXT) were sold and 32,600 shares were bought by its insiders, resulting in a net sale of 344,400 shares.

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

Yext Inc Insider Transactions

No Available Data

What does Venus Concept Inc do?

Who are the key executives at Venus Concept Inc?

Michael L Speiser is the 10 percent owner of Venus Concept Inc. Other key executives at Venus Concept Inc include 10 percent owner Michael Willingham Masters , President Global Sales Ross Portaro , and 10 percent owner Masters Special Situations, Llc .

Venus Concept Inc (VERO) Insider Trades Summary

Over the past 18 months, Michael L Speiser made no insider transaction in Venus Concept Inc (VERO). Other recent insider transactions involving Venus Concept Inc (VERO) include a net sale of 958,979 shares made by Michael Willingham Masters , and a net sale of 42,768 shares made by Anthony Natale .

In summary, during the past 3 months, insiders sold 0 shares of Venus Concept Inc (VERO) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 91,068 shares of Venus Concept Inc (VERO) were sold and 0 shares were bought by its insiders, resulting in a net sale of 91,068 shares.

Venus Concept Inc (VERO)'s detailed insider trading history can be found in Insider Trading Tracker table.

Venus Concept Inc Insider Transactions

No Available Data

What does Mattersight Corp do?

Who are the key executives at Mattersight Corp?

Michael L Speiser is the 10 percent owner of Mattersight Corp. Other key executives at Mattersight Corp include director & 10 percent owner Tench Coxe , director & CFO David B Mullen , and 10 percent owner Jeffrey W Bird .

Mattersight Corp (MATR) Insider Trades Summary

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

Mattersight Corp (MATR)'s detailed insider trading history can be found in Insider Trading Tracker table.

Mattersight Corp Insider Transactions

No Available Data

What does Molecular Templates Inc do?

Who are the key executives at Molecular Templates Inc?

Michael L Speiser is the 10 percent owner of Molecular Templates Inc. Other key executives at Molecular Templates Inc include 10 percent owner Biotech Target N V , Chief Medical Officer Maurizio Voi , and CFO & Treasurer Sean Mclennan .

Molecular Templates Inc (MTEM) Insider Trades Summary

Over the past 18 months, Michael L Speiser made no insider transaction in Molecular Templates Inc (MTEM). Other recent insider transactions involving Molecular Templates Inc (MTEM) include a net sale of 1,029,820 shares made by Biotech Target N V ,

In summary, during the past 3 months, insiders sold 0 shares of Molecular Templates Inc (MTEM) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 1,279,820 shares of Molecular Templates Inc (MTEM) were sold and 250,000 shares were bought by its insiders, resulting in a net sale of 1,029,820 shares.

Molecular Templates Inc (MTEM)'s detailed insider trading history can be found in Insider Trading Tracker table.

Molecular Templates Inc Insider Transactions

No Available Data

What does Dex Liquidating Co do?

Who are the key executives at Dex Liquidating Co?

Michael L Speiser is the 10 percent owner of Dex Liquidating Co. Other key executives at Dex Liquidating Co include other: Former Director Younger William H Jr , V.P. & Finance & CFO & Secretary Newell Robert Y Iv , and VP,Worldwide Sales & Marketing Liam Burns .

Dex Liquidating Co (DXTRQ) Insider Trades Summary

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

Dex Liquidating Co (DXTRQ)'s detailed insider trading history can be found in Insider Trading Tracker table.

Dex Liquidating Co Insider Transactions

No Available Data

What does Corcept Therapeutics Inc do?

Who are the key executives at Corcept Therapeutics Inc?

Michael L Speiser is the 10 percent owner of Corcept Therapeutics Inc. Other key executives at Corcept Therapeutics Inc include Chief Development Officer William Guyer , director & CHIEF EXECUTIVE OFFICER Joseph K Belanoff , and Chief Accounting Officer Joseph Douglas Lyon .

Corcept Therapeutics Inc (CORT) Insider Trades Summary

Over the past 18 months, Michael L Speiser made no insider transaction in Corcept Therapeutics Inc (CORT). Other recent insider transactions involving Corcept Therapeutics Inc (CORT) include a net sale of 33,150 shares made by Swisher Daniel N Jr , a net sale of 262,061 shares made by Joseph Douglas Lyon , and a net sale of 335,590 shares made by Sean Maduck .

In summary, during the past 3 months, insiders sold 418,868 shares of Corcept Therapeutics Inc (CORT) in total and bought 0 shares, with a net sale of 418,868 shares. During the past 18 months, 849,132 shares of Corcept Therapeutics Inc (CORT) were sold and 0 shares were bought by its insiders, resulting in a net sale of 849,132 shares.

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

Corcept Therapeutics Inc Insider Transactions

No Available Data

What does QuinStreet Inc do?

Who are the key executives at QuinStreet Inc?

Michael L Speiser is the 10 percent owner of QuinStreet Inc. Other key executives at QuinStreet Inc include CFO Gregory Wong , director & 10 percent owner & Chief Executive Officer Douglas Valenti , and Chief Technology Officer Nina Bhanap .

QuinStreet Inc (QNST) Insider Trades Summary

Over the past 18 months, Michael L Speiser made no insider transaction in QuinStreet Inc (QNST). Other recent insider transactions involving QuinStreet Inc (QNST) include a net sale of 114,684 shares made by Gregory Wong , a net sale of 40,000 shares made by Stuart Huizinga , and a net sale of 60,000 shares made by Andrew T Sheehan .

In summary, during the past 3 months, insiders sold 36,885 shares of QuinStreet Inc (QNST) in total and bought 0 shares, with a net sale of 36,885 shares. During the past 18 months, 284,053 shares of QuinStreet Inc (QNST) were sold and 0 shares were bought by its insiders, resulting in a net sale of 284,053 shares.

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

QuinStreet Inc Insider Transactions

No Available Data

Michael L Speiser Mailing Address

Above is the net worth, insider trading, and ownership report for Michael L Speiser. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Michael L Speiser's mailing address is: Palo Alto Ca 94304-1005.

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