Sealaska Corporation is expanding its groundwater business by buying a majority stake in Gregg Drilling, a leading marine drilling and geotechnical services company headquartered in southern California.  

“Gregg is a terrific business with excellent people who take pride in their work and bring passion and innovation to solving client problems. It is a company that truly values its employees and as a result is an excellent fit with the open, learning operating culture that Sealaska is building. It is also well placed to play a role in helping solve the growing challenges around water supply and coastal engineering in the western U.S.,” said Terry Downes, Sealaska’s Chief Operating Officer

“We’re excited about working with Sealaska because of its familiar way of thinking and willingness to look for new ways to solve complex problems,” said Gregg Drilling CEO John Gregg. “Our collaboration will create a formidable team that will allow us to tackle water remediation and coastal erosion issues facing our region.”


This investment aligns with Sealaska’s focus on improving Ocean Health. It currently has businesses in land management, professional services with a groundwater emphasis, and natural foods, specializing in seafood.  Sealaska is transitioning its operating culture to become the problem solver of choice through creating a flat, open, learning culture where people can reach their full potential. The inspiration to work toward healthier oceans and enhancing the natural environment, comes from Sealaska’s unique history and ownership.

Sealaska is an Alaska Native Corporation, formed under the Alaska Native Claims Settlement Act (ANCSA) of 1971. Sealaska has approximately 22,000 shareholders, primarily of Tlingit, Haida and Tsimshian descent.


Gregg Drilling (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Founded in 1985, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Gregg has more than 160 employees throughout California.