Exhibit 99.1 Hallador Energy Company Reports Record Net Income and Adjusted EBITDA for 2023; Signs MOU to attract data centers to Merom Power Plant. TERRE HAUTE, Ind., March 13, 2024 -- Hallador Energy Company (NASDAQ – HNRG) reports full year 2023 net income of $44.8 million, $1.35 basic earnings per share, operating cash flow of $59.4 million, and adjusted EBITDA of $107 million, all respectively. Brent Bilsland, President and Chief Executive Officer, stated, "Hallador had a solid year as a company. Our c ...

Hallador Energy Company (NASDAQ:HNRG) Q3 2023 Results Conference Call November 7, 2023 2:00 PM ET Company Participants Rebecca Palumbo - Director of Investor Relations Brent Bilsland - President and Chief Executive Officer Lawrence Martin - Chief Financial Officer Conference Call Participants Kevin Tracey - Oberon Asset Management Kenneth Pounds - Castlebury Advisory Jason Lustig - J. Goldman & Co Lucas Pipes - B. Riley Securities Operator Hello, everyone, and welcome to the Hallador Energy Third Quarter 20 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number:001-34743 HALLADOR ENERGY COMPANY (www.halladorenergy.com) Colorado (State of incorporation) 1183 East Canvasback Drive, Terre Haute, Indiana (Address of principal executive ...

Hallador Energy Company (NASDAQ:HNRG) Q2 2023 Results Conference Call August 8, 2023 2:00 PM ET Company Participants Rebecca Palumbo - Director, IR Brent Bilsland - President, CEO Larry Martin - CFO Conference Call Participants Lucas Pipes - B. Riley Kevin Tracey - Oberon Asset Management Operator Good afternoon, ladies and gentlemen. Thank you for attending today's Hallador Energy's Second Quarter 2023 Earnings Call. My name is Tia and I will be your moderator for today's call. All lines will be muted dur ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number:001-34743 HALLADOR ENERGY COMPANY (www.halladorenergy.com) Colorado (State of incorporation) 84-1014610 (IRS Employer Identification No.) 1183 East Canvasback Drive, Terre Haute, ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number:001-34743 "COAL KEEPS YOUR LIGHTS ON" "COAL KEEPS YOUR LIGHTS ON" HALLADOR ENERGY COMPANY (www.halladorenergy.com) Colorado (State of incorporation) (IRS Employer Identification ...

Hallador Energy Company (NASDAQ:HNRG) Q4 2022 Results Conference Call March 17, 2023 2:00 PM ET Company Participants Becky Palumbo - Investor Relations Brent Bilsland - President and Chief Executive Officer Larry Martin - Chief Financial Officer Conference Call Participants Lucas Pipes - B. Riley Securities Kevin Tracey - Oberon Asset Management Mike Rybak - Butler Hall Nick Giles - B. Riley Securities Operator Hello, and welcome to the Hallador Fourth Quarter 2022 Earnings Call. My name is Elliot, and I'll ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K Commission file number: 001-3473 "COAL KEEPS YOUR LIGHTS ON" "COAL KEEPS YOUR LIGHTS ON" HALLADOR ENERGY COMPANY (www.halladorenergy.com) Colorado 84-1014610 (State of incorporation) (IRS Employer Identification No.) 1183 East Canvasback Drive, Terre Haute, Indiana 47802 (Address of principal executive offices) (Zip Code) Issuer's telephone number: 812.299.2800 Securities registered pursuant to Section 12(b) of the Act: | Tit ...

Hallador Energy Company (NASDAQ:HNRG) Q3 2022 Earnings Conference Call November 15, 2022 2:00 PM ET Company Participants Rebecca Palumbo – Investor Relations Brent Bilsland – President and Chief Executive Officer Larry Martin – Chief Financial Officer Conference Call Participants Kevin Tracey – Oberon AM Arthur Calavritinos – ANC Capital Jeff Bronchick – Cove Street Capital Lucas Pipes – B. Riley Securities Operator Good afternoon and thank you for attending today's Hallador Energy Third Quarter 2022 Earnin ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number:001-34743 "COAL KEEPS YOUR LIGHTS ON" "COAL KEEPS YOUR LIGHTS ON" HALLADOR ENERGY COMPANY (www.halladorenergy.com) Colorado (State of incorporation) 84-101461 ...