Robert F. Martinovich

Chief Operating Officer, ONEOK.

Companies

Core LaboratoriesBoard member May 30, 2025 to now¹
ONEOKEXECUTIVE VP OPERATIONS Feb 20, 2013 to Dec 28, 2022²
ONEOKEVP, Chief Administrative Ofc Jul 3, 2017 to Jul 3, 2017³
ONEOKChief financial officer Feb 15, 2012 to Oct 9, 2012⁴
ONEOKChief operating officer Jul 22, 2009 to Jan 18, 2012⁵

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

ONEOK OKE282,004 shares⁶$26.3M at $93.27Feb 23, 2022
Core Laboratories CLB8,069 shares⁷$81.4K at $10.09Apr 1, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

Apr 1, 2026Exercised options 8,069 shares of Core Laboratories⁷
Feb 20, 2022Shares withheld for tax 1,217 shares at $61.81 of ONEOK⁶
Feb 20, 2022Granted 2,758 shares at $61.81 of ONEOK⁶
Feb 20, 2022Shares withheld for tax 6,187 shares at $61.81 of ONEOK⁶
Feb 20, 2022Granted 13,892 shares at $61.81 of ONEOK⁶
Feb 20, 2022Shares withheld for tax 6,191 shares at $61.81 of ONEOK⁸

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARCore Laboratories, Board member
2
SEC EDGARONEOK, EXECUTIVE VP OPERATIONS
3
SEC EDGARONEOK, EVP, Chief Administrative Ofc
4
SEC EDGARONEOK, Chief financial officer
5
SEC EDGARONEOK, Chief operating officer
6
SEC EDGARONEOK shares after the filing of Feb 23, 2022
7
SEC EDGARCore Laboratories shares after the filing of Apr 1, 2026
8
SEC EDGARForm 4 filed Dec 28, 2022