MARKS MICHAEL E

Insider CIK 1163715 · SNDK Director · GPRO Director, 10% owner · BLI Director · SLB Director

Track record PRO

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Track record

See how this insider's past purchases performed 30 and 90 days later, and a conviction score on each buy.

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Trades across companies

Ticker	Code	Trade	Filed	Shares	Price	Value	Owned after
BLI Berkeley Lights, Inc.	S Sale	2021-03-11	2021-03-15	22,160	$55.19	$1.22M	1,114,142	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-11	2021-03-15	6,100	$54.19	$330.6K	1,136,302	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-10	2021-03-11	45,810	$52.81	$2.42M	1,196,592	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-10	2021-03-11	54,190	$53.29	$2.89M	1,142,402	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-09	2021-03-11	14,462	$53.30	$770.8K	1,257,940	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-09	2021-03-11	15,238	$53.84	$820.4K	1,242,702	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-09	2021-03-11	300	$54.62	$16.4K	1,242,402	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-03	2021-03-05	1,235	$61.26	$75.7K	1,272,907	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-03	2021-03-05	505	$62.22	$31.4K	1,272,402	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-02	2021-03-03	12,008	$62.22	$747.1K	1,282,134	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-02	2021-03-03	6,210	$63.16	$392.2K	1,275,924	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-02	2021-03-03	1,782	$64.61	$115.1K	1,274,142	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2021-03-01	2021-03-03	20,000	$61.93	$1.24M	1,294,142	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2020-12-10	2020-12-18	55,162	$82.56	$4.55M	3,700,007	SEC↗
BLI Berkeley Lights, Inc.	S Sale	2020-11-23	2020-11-25	362,586	$82.56	$29.94M	3,755,169	SEC↗
BLI Berkeley Lights, Inc.	C Conversion deriv	2020-07-16	2020-07-20	2,329,916	—	$0	0	SEC↗
BLI Berkeley Lights, Inc.	C Conversion deriv	2020-07-16	2020-07-20	853,242	—	$0	0	SEC↗
BLI Berkeley Lights, Inc.	C Conversion deriv	2020-07-16	2020-07-20	742,942	—	$0	0	SEC↗
BLI Berkeley Lights, Inc.	C Conversion deriv	2020-07-16	2020-07-20	191,655	—	$0	0	SEC↗
BLI Berkeley Lights, Inc.	C Conversion deriv	2020-07-16	2020-07-20	19,230	—	$0	0	SEC↗
BLI Berkeley Lights, Inc.	C Conversion	2020-07-16	2020-07-20	4,117,755	—	$0	4,117,755	SEC↗
BLI Berkeley Lights, Inc.	C Conversion	2020-07-16	2020-07-20	19,230	—	$0	19,230	SEC↗
SLB SCHLUMBERGER LIMITED/NV	P Buy	2018-09-06	2018-09-07	8,000	$60.31	$482.5K	68,021	SEC↗
SLB SCHLUMBERGER LIMITED/NV	A Award	2018-05-01	2018-05-01	2,771	—	$0	60,021	SEC↗
SLB SCHLUMBERGER LIMITED/NV	P Buy	2017-10-26	2018-12-03	16,000	$63.56	$1.02M	84,205	SEC↗
SLB SCHLUMBERGER LIMITED/NV	P Buy	2017-08-11	2017-08-14	8,000	$64.20	$513.6K	18,000	SEC↗
SLB SCHLUMBERGER LIMITED/NV	A Award	2017-05-01	2017-05-01	2,250	—	$0	39,250	SEC↗
GPRO GoPro, Inc.	S Sale	2017-02-17	2017-02-22	30,000	$9.22	$276.6K	35,401	SEC↗
GPRO GoPro, Inc.	S Sale	2016-08-31	2016-09-01	17	$14.94	$254	0	SEC↗
GPRO GoPro, Inc.	S Sale	2016-08-31	2016-09-01	247	$14.94	$3.7K	0	SEC↗
SLB SCHLUMBERGER LTD /NV/	S Sale	2016-08-29	2016-08-29	13,600	$81.19	$1.10M	37,000	SEC↗
GPRO GoPro, Inc.	G Gift	2016-08-19	2016-08-26	50,000	—	$0	70,839	SEC↗
GPRO GoPro, Inc.	S Sale	2016-08-15	2016-08-17	40,000	$15.58	$623.2K	120,839	SEC↗
GPRO GoPro, Inc.	A Award deriv	2016-06-06	2016-06-08	24,861	—	$0	24,861	SEC↗
GPRO GoPro, Inc.	A Award	2016-06-06	2016-06-08	10,496	—	$0	160,839	SEC↗
SNDK SANDISK CORP	D To issuer deriv	2016-05-12	2016-05-13	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	D To issuer deriv	2016-05-12	2016-05-13	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	D To issuer	2016-05-12	2016-05-13	15,341	—	$0	0	SEC↗
SNDK SANDISK CORP	D To issuer	2016-05-12	2016-05-13	20,000	—	$0	0	SEC↗
SLB SCHLUMBERGER LTD /NV/	A Award	2016-05-02	2016-05-02	2,250	—	$0	50,600	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	140	—	$0	247	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	25,397	—	$0	59,885	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	565	—	$0	0	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	565	—	$0	150,343	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	20,492	—	$0	39,393	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	20,352	—	$0	149,778	SEC↗
GPRO GoPro, Inc.	J Other	2015-12-22	2015-12-22	565	—	$0	565	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	4,677	—	$0	4,677	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	36,514	—	$0	49,607	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	4,677	—	$0	0	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	86,946	—	$0	124,760	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	67	—	$0	107	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	144,281	—	$0	158,015	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	123,527	—	$0	34,488	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	4,666	—	$0	129,426	SEC↗
GPRO GoPro, Inc.	J Other	2015-11-30	2015-12-02	11	—	$0	17	SEC↗
SLB SCHLUMBERGER LTD /NV/	P Buy	2015-08-27	2015-08-28	13,600	$73.18	$995.2K	48,350	SEC↗
GPRO GoPro, Inc.	G Gift	2015-08-10	2015-08-12	24,652	—	$0	37,814	SEC↗
GPRO GoPro, Inc.	G Gift	2015-08-10	2015-08-12	8,728	—	$0	13,093	SEC↗
SNDK SANDISK CORP	A Award deriv	2015-06-18	2015-06-22	6,250	—	$0	6,250	SEC↗
SNDK SANDISK CORP	A Award	2015-06-18	2015-06-22	1,927	—	$0	15,341	SEC↗
GPRO GoPro, Inc.	A Award deriv	2015-06-08	2015-06-09	6,049	—	$0	6,049	SEC↗
GPRO GoPro, Inc.	A Award	2015-06-08	2015-06-09	757	—	$0	62,466	SEC↗
GPRO GoPro, Inc.	J Other	2015-06-05	2015-06-09	181	—	$0	0	SEC↗
GPRO GoPro, Inc.	J Other	2015-06-05	2015-06-09	181	—	$0	61,709	SEC↗
GPRO GoPro, Inc.	J Other	2015-06-05	2015-06-09	650	—	$0	13,734	SEC↗
GPRO GoPro, Inc.	J Other	2015-06-05	2015-06-09	650	—	$0	61,528	SEC↗
GPRO GoPro, Inc.	J Other	2015-06-05	2015-06-09	181	—	$0	181	SEC↗
GPRO GoPro, Inc.	J Other	2015-06-05	2015-06-09	805	—	$0	14,384	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	40	—	$0	40	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	6	—	$0	6	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	3,112	—	$0	60,878	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	78,738	—	$0	13,579	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	3,118	—	$0	0	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	21,821	—	$0	21,821	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	56,877	—	$0	57,766	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	3,118	—	$0	3,118	SEC↗
GPRO GoPro, Inc.	J Other	2015-05-13	2015-05-15	92,317	—	$0	92,317	SEC↗
SLB SCHLUMBERGER LTD /NV/	A Award	2015-04-30	2015-04-30	2,250	—	$0	34,750	SEC↗
GPRO GoPro, Inc.	J Other	2015-02-27	2015-03-02	8,559,949	—	$0	0	SEC↗
GPRO GoPro, Inc.	S Sale	2015-02-26	2015-03-02	51,100	$45.56	$2.33M	8,559,949	SEC↗
GPRO GoPro, Inc.	S Sale	2015-02-25	2015-03-02	133,900	$45.06	$6.03M	8,611,049	SEC↗
GPRO GoPro, Inc.	S Sale	2015-02-24	2015-02-26	300,000	$44.32	$13.30M	8,744,949	SEC↗
GPRO GoPro, Inc.	S Sale	2015-02-20	2015-02-23	200,000	$45.47	$9.09M	9,044,949	SEC↗
GPRO GoPro, Inc.	S Sale	2015-02-19	2015-02-23	500,000	$45.18	$22.59M	9,244,949	SEC↗
GPRO GoPro, Inc.	S Sale	2015-02-18	2015-02-19	5,000,000	$46.56	$232.80M	9,744,949	SEC↗
GPRO GoPro, Inc.	C Conversion deriv	2015-02-17	2015-02-19	14,744,949	—	$0	0	SEC↗
GPRO GoPro, Inc.	C Conversion	2015-02-17	2015-02-19	14,744,949	—	$0	14,744,949	SEC↗
GPRO GoPro, Inc.	C Conversion deriv	2014-12-03	2014-12-04	332,572	—	$0	14,744,949	SEC↗
GPRO GoPro, Inc.	S Sale	2014-12-03	2014-12-04	332,572	$72.38	$24.07M	0	SEC↗
GPRO GoPro, Inc.	C Conversion	2014-12-03	2014-12-04	332,572	—	$0	332,572	SEC↗
GPRO GoPro, Inc.	C Conversion deriv	2014-11-25	2014-11-26	1,627,400	—	$0	15,077,521	SEC↗
GPRO GoPro, Inc.	C Conversion	2014-11-25	2014-11-26	1,627,400	—	$0	1,627,400	SEC↗
GPRO GoPro, Inc.	S Sale	2014-11-25	2014-11-26	1,627,400	$72.38	$117.79M	0	SEC↗
SNDK SANDISK CORP	M Exercise deriv	2014-10-30	2014-10-31	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	M Exercise deriv	2014-10-30	2014-10-31	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	M Exercise deriv	2014-10-30	2014-10-31	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	M Exercise deriv	2014-10-30	2014-10-31	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	S Sale	2014-10-30	2014-10-31	20,000	$90.08	$1.80M	13,414	SEC↗
SNDK SANDISK CORP	M Exercise	2014-10-30	2014-10-31	6,250	$58.93	$368.3K	33,414	SEC↗
SNDK SANDISK CORP	M Exercise	2014-10-30	2014-10-31	6,250	$35.95	$224.7K	27,164	SEC↗
SNDK SANDISK CORP	M Exercise	2014-10-30	2014-10-31	6,250	$46.43	$290.2K	14,664	SEC↗
SNDK SANDISK CORP	M Exercise	2014-10-30	2014-10-31	6,250	$43.05	$269.1K	20,914	SEC↗
SLB SCHLUMBERGER LTD /NV/	P Buy	2014-10-27	2014-10-28	3,250	$92.59	$300.9K	32,500	SEC↗
GPRO GoPro, Inc.	A Award deriv	2014-07-30	2014-08-01	6,464	—	$0	6,464	SEC↗
GPRO GoPro, Inc.	A Award	2014-07-30	2014-08-01	889	—	$0	889	SEC↗
GPRO GoPro, Inc.	C Conversion deriv	2014-07-01	2014-07-01	18,356,461	—	$0	18,356,461	SEC↗
GPRO GoPro, Inc.	C Conversion deriv	2014-07-01	2014-07-01	18,356,461	—	$0	0	SEC↗
GPRO GoPro, Inc.	C Conversion deriv	2014-07-01	2014-07-01	1,651,540	—	$0	16,704,921	SEC↗
GPRO GoPro, Inc.	C Conversion	2014-07-01	2014-07-01	1,651,540	—	$0	1,651,540	SEC↗
GPRO GoPro, Inc.	S Sale	2014-07-01	2014-07-01	1,651,540	$22.56	$37.26M	0	SEC↗
SNDK SANDISK CORP	A Award deriv	2014-06-19	2014-06-23	6,250	—	$0	6,250	SEC↗
SNDK SANDISK CORP	A Award	2014-06-19	2014-06-23	1,230	—	$0	8,414	SEC↗
SLB SCHLUMBERGER LTD /NV/	A Award	2014-04-30	2014-04-30	2,250	—	$0	29,250	SEC↗
SNDK SANDISK CORP	S Sale	2014-01-28	2014-01-29	10,000	$69.60	$696.0K	20,000	SEC↗
SNDK SANDISK CORP	M Exercise deriv	2013-11-08	2013-11-08	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	M Exercise deriv	2013-11-08	2013-11-08	6,250	—	$0	0	SEC↗
SNDK SANDISK CORP	M Exercise	2013-11-08	2013-11-08	6,250	$42.00	$262.5K	13,434	SEC↗
SNDK SANDISK CORP	M Exercise	2013-11-08	2013-11-08	6,250	$28.10	$175.6K	19,684	SEC↗
SNDK SANDISK CORP	S Sale	2013-11-08	2013-11-08	12,500	$68.05	$850.6K	7,184	SEC↗
SNDK SANDISK CORP	A Award deriv	2013-06-12	2013-06-14	6,250	—	$0	6,250	SEC↗
SNDK SANDISK CORP	A Award	2013-06-12	2013-06-14	1,356	—	$0	7,184	SEC↗
SLB SCHLUMBERGER LTD /NV/	A Award	2013-04-30	2013-04-30	2,250	—	$0	27,000	SEC↗
SNDK SANDISK CORP	A Award deriv	2012-06-12	2012-06-13	6,250	—	$0	6,250	SEC↗
SNDK SANDISK CORP	A Award	2012-06-12	2012-06-13	2,269	—	$0	5,828	SEC↗
SLB SCHLUMBERGER LTD /NV/	A Award	2012-04-30	2012-05-01	2,250	—	$0	24,750	SEC↗