Calista Corporation Statement on Draft SEIS for Donlin Gold Project

Public comment period open until October 23

September 24, 2026

(Anchorage, Alaska) – Calista Corporation is closely reviewing the Draft Supplemental Environmental Impact Statement (Draft SEIS) for the proposed Donlin Gold Project, released by the U.S. Army Corps of Engineers on September 23.

The Draft SEIS provides scenarios for a larger, hypothetical release of tailings from the project’s Tailings Storage Facility, as required by a U.S. District Court ruling.

Calista plans to develop comments on the Draft SEIS. The public comment period is open until October 23.

To review the Draft SEIS, submit comments, and find out about public meetings, visit https://www.donlingoldseis.com/.

Calista Corporation has about 39,500 Shareholders and is the parent company of more than 40 subsidiaries in the following industries: defense contracting, construction, real estate, environmental services, natural resource development, marine transportation, oilfield services, and heavy equipment sales, service and rentals. Since inception, Calista has declared more than $180 million in dividends and distributions, including $13.7 million in Elders’ Benefit Program distributions to Shareholders. Since 1994, Calista Education and Culture has provided more than $7.7 million in scholarships to Calista Shareholders and Descendants. Calista can be found on Facebook (www.facebook.com/CalistaCorporation), YouTube (www.youtube.com/calistacorp) and Instagram (www.instagram.com/calistacorp).