1. Corporate Officers - M
2. Martinovich Robert F

Insider Trading History of Martinovich Robert F

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Martinovich Robert F since 2015. This trader's CIK number is 1251674. At the time of last reporting, Martinovich Robert F was the Officer of Core Laboratories Inc. /de/. (stock ticker symbol CLB). Also see all insider trading activities at Core Laboratories Inc. /de/.

Note that in the past MARTINOVICH ROBERT F also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Oneok Inc /new/ (OKE) by Martinovich Robert F

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2021	OKE	0	$0	0	$0	27,827	$1,263,123
2020	OKE	0	$0	0	$0	33,551	$2,580,407
2019	OKE	0	$0	0	$0	82,076	$5,548,337
2018	OKE	0	$0	0	$0	33,566	$1,918,296
2017	OKE	0	$0	0	$0	11,247	$603,401
2015	OKE	0	$0	0	$0	37,352	$1,781,130

Yearly summary of insider trading at Core Laboratories Inc. /de/ (CLB) by Martinovich Robert F

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2026	CLB	0	$0	0	$0	8,069	$0

Insider trading activities at 2 companies by Martinovich Robert F:

1. Oneok Inc /new/ (OKE)

2. Core Laboratories Inc. /de/ (CLB)

Table 1. Insider trading of Oneok Inc /new/ (OKE) by Martinovich Robert F

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2021-02-21	OKE	Option Ex	27,827	45.39	1,263,123
2020-02-22	OKE	Option Ex	33,551	76.91	2,580,407
2019-02-17	OKE	Option Ex	82,076	67.60	5,548,337
2018-02-18	OKE	Option Ex	33,566	57.15	1,918,296
2017-02-19	OKE	Option Ex	11,247	53.65	603,401
2015-02-15	OKE	Option Ex	37,352	47.69	1,781,130

Table 2. Insider trading of Core Laboratories Inc. /de/ (CLB) by Martinovich Robert F

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2026-04-01	CLB	Option Ex	8,069	.00	0

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Martinovich Robert F (Officer of Core Laboratories Inc. /de/ at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

▪ Real-time Insider Trading

▪ Insider Officer Cluster Trading

▪ Top Officer Buys of the Week

▪ Top Officer Buys of the Month