Michael E Marks - Net Worth and Insider Trading

Michael E Marks Net Worth

The estimated net worth of Michael E Marks is at least $55 Million dollars as of 2025-04-28. Michael E Marks is the Director of Crocs Inc and owns about 500,000 shares of Crocs Inc (CROX) stock worth over $48 Million. Michael E Marks is the Director of SanDisk Corp and owns about 33,414 shares of SanDisk Corp (SNDK) stock worth over $3 Million. Michael E Marks is also the Director of Schlumberger Ltd and owns about 68,021 shares of Schlumberger Ltd (SLB) stock worth over $2 Million. Besides these, Michael E Marks also holds PhenomeX Inc (CELL) , KLA Corp (KLAC) , Calix Inc (CALX) , GoPro Inc (GPRO) . Details can be seen in Michael E Marks'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 E Marks has not made any transactions after 2021-03-11 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Michael E Marks

Michael E Marks Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Michael E Marks owns 8 companies in total, including PhenomeX Inc (CELL) , Schlumberger Ltd (SLB) , and GoPro Inc (GPRO) among others .

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

Insider Ownership Summary of Michael E Marks

Ticker	Company	Transaction Date	Type of Owner
CELL	PhenomeX Inc	2021-03-11	director
SLB	Schlumberger Ltd	2018-09-06	director
GPRO	GoPro Inc	2017-02-17	director & 10 percent owner
		2016-05-12	director
		2010-12-07	director
		2008-08-15	director
		2004-08-23	director & CEO
		2006-05-09	director

Michael E Marks Latest Holdings Summary

Michael E Marks currently owns a total of 7 stocks. Among these stocks, Michael E Marks owns 500,000 shares of Crocs Inc (CROX) as of August 15, 2008, with a value of $48 Million and a weighting of 86.58%. Michael E Marks owns 33,414 shares of SanDisk Corp (SNDK) as of October 30, 2014, with a value of $3 Million and a weighting of 4.59%. Michael E Marks also owns 68,021 shares of Schlumberger Ltd (SLB) as of September 6, 2018, with a value of $2 Million and a weighting of 4.21%. The other 4 stocks PhenomeX Inc (CELL) , KLA Corp (KLAC) , Calix Inc (CALX) , GoPro Inc (GPRO) have a combined weighting of 4.62% among all his current holdings.

Latest Holdings of Michael E Marks

Ticker	Company	Latest Transaction Date	Shares Owned	Current Price ($)	Current Value ($)
CROX	Crocs Inc	2008-08-15	500,000	96.09	48,045,000
SNDK	SanDisk Corp	2014-10-30	33,414	76.18	2,545,479
SLB	Schlumberger Ltd	2018-09-06	68,021	34.38	2,338,562
CELL	PhenomeX Inc	2021-03-11	1,114,142	1.00	1,112,025
KLAC	KLA Corp	2006-05-09	1,000	694.61	694,605
CALX	Calix Inc	2010-12-07	17,052	39.60	675,259
GPRO	GoPro Inc	2017-02-17	129,839	0.62	81,123

Holding Weightings of Michael E Marks

Michael E Marks Form 4 Trading Tracker

According to the SEC Form 4 filings, Michael E Marks has made a total of 0 transactions in Crocs Inc (CROX) over the past 5 years. The most-recent trade in Crocs Inc is the sale of 714,808 shares on August 15, 2008, which brought Michael E Marks around $3 Million.

According to the SEC Form 4 filings, Michael E Marks has made a total of 0 transactions in SanDisk Corp (SNDK) over the past 5 years. The most-recent trade in SanDisk Corp is the sale of 20,000 shares on October 30, 2014, which brought Michael E Marks around $2 Million.

According to the SEC Form 4 filings, Michael E Marks has made a total of 0 transactions in Schlumberger Ltd (SLB) over the past 5 years. The most-recent trade in Schlumberger Ltd is the acquisition of 8,000 shares on September 6, 2018, which cost Michael E Marks around $482,480.

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

Insider Trading History of Michael E Marks

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 E Marks Trading Performance

GuruFocus tracks the stock performance after each of Michael E Marks's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Michael E Marks is -14.1%. GuruFocus also compares Michael E Marks's trading performance to market benchmark return within the same time period. The performance of stocks bought by Michael E Marks within 3 months outperforms 2 times out of 14 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Michael E Marks'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 E Marks

Average Return

Average return per transaction

Outperforming Transactions

4 out of 14 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(%)	-3.82
Relative Return to S&P 500(%)	-3.07

Michael E Marks Ownership Network

Ownership Network List of Michael E Marks

No Data

Ownership Network Relation of Michael E Marks

Michael E Marks Owned Company Details

What does PhenomeX Inc do?

Who are the key executives at PhenomeX Inc?

Michael E Marks is the director of PhenomeX Inc. Other key executives at PhenomeX Inc include Chief Financial Officer Mehul Joshi , director & Chief Executive Officer Siddhartha Kadia , and 10 percent owner Bird Mergersub Corp .

PhenomeX Inc (CELL) Insider Trades Summary

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

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

PhenomeX Inc Insider Transactions

No Available Data

What does Schlumberger Ltd do?

Who are the key executives at Schlumberger Ltd?

Michael E Marks is the director of Schlumberger Ltd. Other key executives at Schlumberger Ltd include VP & Human Resources Gavin Rennick , Chief People Officer Bejar Carmen Rando , and VP Controller & Operations Abdellah Merad .

Schlumberger Ltd (SLB) Insider Trades Summary

Over the past 18 months, Michael E Marks made no insider transaction in Schlumberger Ltd (SLB). Other recent insider transactions involving Schlumberger Ltd (SLB) include a net sale of 137,818 shares made by Stephane Biguet , a net sale of 311,956 shares made by Mogharbel Khaled Al , and a net sale of 91,793 shares made by Gavin Rennick .

In summary, during the past 3 months, insiders sold 117,647 shares of Schlumberger Ltd (SLB) in total and bought 0 shares, with a net sale of 117,647 shares. During the past 18 months, 970,104 shares of Schlumberger Ltd (SLB) were sold and 0 shares were bought by its insiders, resulting in a net sale of 970,104 shares.

Schlumberger Ltd (SLB)'s detailed insider trading history can be found in Insider Trading Tracker table.

Schlumberger Ltd Insider Transactions

No Available Data

What does GoPro Inc do?

Who are the key executives at GoPro Inc?

Michael E Marks is the director & 10 percent owner of GoPro Inc. Other key executives at GoPro Inc include Vice President & Global Sales Dean Jahnke , VP & Corp/Bus Dev & GC & Sec Eve T. Saltman , and Vice President of Finance Brian Mcgee .

GoPro Inc (GPRO) Insider Trades Summary

Over the past 18 months, Michael E Marks made no insider transaction in GoPro Inc (GPRO). Other recent insider transactions involving GoPro Inc (GPRO) include a net sale of 8,117 shares made by Dean Jahnke , a net sale of 280,388 shares made by Alexander J Lurie , and a net sale of 9,511 shares made by Brian Mcgee .

In summary, during the past 3 months, insiders sold 6,323 shares of GoPro Inc (GPRO) in total and bought 0 shares, with a net sale of 6,323 shares. During the past 18 months, 303,482 shares of GoPro Inc (GPRO) were sold and 0 shares were bought by its insiders, resulting in a net sale of 303,482 shares.

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

GoPro Inc Insider Transactions

No Available Data

What does SanDisk Corp do?

Who are the key executives at SanDisk Corp?

Michael E Marks is the director of SanDisk Corp. Other key executives at SanDisk Corp include Exec. VP & Administration & CFO Judy Bruner , SVP & Chief Legal Officer & IP Mark David Brazeal , and director & President/CEO Sanjay Mehrotra .

SanDisk Corp (SNDK) Insider Trades Summary

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

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

SanDisk Corp Insider Transactions

No Available Data

What does Calix Inc do?

Who are the key executives at Calix Inc?

Michael E Marks is the director of Calix Inc. Other key executives at Calix Inc include EVP & Commercial Operations John Matthew Collins , EVP & Products Eleniak Shane Todd Marshall , and interim CFO & PFO Sindelar Cory .

Calix Inc (CALX) Insider Trades Summary

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

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

Calix Inc Insider Transactions

No Available Data

What does Crocs Inc do?

Who are the key executives at Crocs Inc?

Michael E Marks is the director of Crocs Inc. Other key executives at Crocs Inc include EVP & Chief People Officer Shannon Sisler , EVP & Chief Digital Officer Adam Michaels , and CFO Anne Mehlman .

Crocs Inc (CROX) Insider Trades Summary

Over the past 18 months, Michael E Marks made no insider transaction in Crocs Inc (CROX). Other recent insider transactions involving Crocs Inc (CROX) include a net sale of 21,036 shares made by Adam Michaels , a net sale of 16,988 shares made by Michelle Poole , and a net sale of 10,612 shares made by Shannon Sisler .

In summary, during the past 3 months, insiders sold 19,659 shares of Crocs Inc (CROX) in total and bought 0 shares, with a net sale of 19,659 shares. During the past 18 months, 125,551 shares of Crocs Inc (CROX) were sold and 7,208 shares were bought by its insiders, resulting in a net sale of 118,343 shares.

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

Crocs Inc Insider Transactions

No Available Data

What does Flex Ltd do?

Who are the key executives at Flex Ltd?

Michael E Marks is the director & CEO of Flex Ltd. Other key executives at Flex Ltd include Chief Accounting Officer Daniel Wendler , Group President Kwang Hooi Tan , and President & Agility Solutions Michael P Hartung .

Flex Ltd (FLEX) Insider Trades Summary

Over the past 18 months, Michael E Marks made no insider transaction in Flex Ltd (FLEX). Other recent insider transactions involving Flex Ltd (FLEX) include a net sale of 411,258 shares made by David Scott Offer , a net sale of 96,856 shares made by Kwang Hooi Tan , and a net sale of 193,693 shares made by Michael P Hartung .

In summary, during the past 3 months, insiders sold 129,119 shares of Flex Ltd (FLEX) in total and bought 0 shares, with a net sale of 129,119 shares. During the past 18 months, 1,632,055 shares of Flex Ltd (FLEX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 1,632,055 shares.

Flex Ltd (FLEX)'s detailed insider trading history can be found in Insider Trading Tracker table.

Flex Ltd Insider Transactions

No Available Data

What does KLA Corp do?

Who are the key executives at KLA Corp?

Michael E Marks is the director of KLA Corp. Other key executives at KLA Corp include EVP & Chief Financial Officer Bren D. Higgins , Executive Vice President Richard P Wallace , and President & Semi Proc. Control Ahmad A. Khan .

KLA Corp (KLAC) Insider Trades Summary

Over the past 18 months, Michael E Marks made no insider transaction in KLA Corp (KLAC). Other recent insider transactions involving KLA Corp (KLAC) include a net sale of 22,027 shares made by Bren D. Higgins , a net sale of 7,619 shares made by Brian Lorig , and a net sale of 45,752 shares made by Richard P Wallace .

In summary, during the past 3 months, insiders sold 7,008 shares of KLA Corp (KLAC) in total and bought 0 shares, with a net sale of 7,008 shares. During the past 18 months, 100,888 shares of KLA Corp (KLAC) were sold and 0 shares were bought by its insiders, resulting in a net sale of 100,888 shares.

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

KLA Corp Insider Transactions

No Available Data

Michael E Marks Mailing Address

Above is the net worth, insider trading, and ownership report for Michael E Marks. Currently GuruFocus does not have mailing address information for Michael E Marks.

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