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 March 31, 2021 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) 84-1014610 ...

Hallador Energy Company (NASDAQ:HNRG) Q4 2020 Results Conference Call March 9, 2021 2:00 PM ET Company Participants Becky Palumbo - Director, Investor Relations Brent Bilsland - President and CEO Larry Martin - Chief Financial Officer Conference Call Participants Lucas Pipes - B. Riley Securities Douglas Dethy - D.C. Capital Partners Operator Good day. And welcome to the Hallador Energy Company Fourth Quarter and Full Year 2020 Earnings Conference Call. All participants will be in listen-only mode. [Operato ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended: December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-3473 HALLADOR ENERGY COMPANY "COAL KEEPS YOUR LIGHTS ON" "COAL KEEPS YOUR LIGHTS ON" Colorado 84-1014610 (State of incorporation) (IRS Employer Identification No.) 1183 East C ...

Hallador Energy Company (NASDAQ:HNRG) Q3 2020 Results Earnings Conference Call November 3, 2020 2:00 PM ET Company Participants Becky Palumbo - Director, Investor Relations Brent Bilsland - President and CEO Larry Martin - Chief Financial Officer Conference Call Participants Lucas Pipes - B. Riley Securities Mark Kaufman - MLK Investment Management Eric Fredback - Pacific Value Operator Good day. And welcome to Hallador Energy Third Quarter 2020 Earnings Conference Call. All participants will be in listen-o ...

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, 2020 ☐ 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 ...

Hallador Energy Company (NASDAQ:HNRG) Q2 2020 Earnings Conference Call August 4, 2020 2:00 PM ET Company Participants Rebecca Palumbo - Director, IR Brent Bilsland - President, CEO & Chairman Larry Martin - EVP & CFO Conference Call Participants Operator Good day, and welcome to Hallador Energy's Second Quarter 2020 Earnings Conference Call. All participants will be in a listen-only mode. [Operator Instructions] After today's presentation there will be an opportunity to ask question. [Operator Instructions] ...

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: June 30, 2020 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) 84-101461 ...

Hallador Energy Co (NASDAQ:HNRG) Q1 2020 Earnings Conference Call May 12, 2020 2:00 PM ET Company Participants Rebecca Palumbo - Director, IR Lawrence Martin - EVP & CFO Brent Bilsland - President, CEO & Chairman Conference Call Participants Lucas Pipes - B. Riley FBR, Inc. Douglas Dethy - D.C. Capital Advisors Operator Good afternoon, and welcome to Hallador Energy's First Quarter 2020 Earnings Conference Call. [Operator Instructions]. I'd now like to turn the conference over to Becky Palumbo, Director of ...

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: March 31, 2020 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) 84-10146 ...

Hallador Energy Company (NASDAQ:HNRG) Q4 2019 Earnings Conference Call March 10, 2020 2:00 PM ET Company Participants Becky Palumbo - IR Brent Bilsland - President and CEO Larry Martin - CFO Conference Call Participants Lucas Pipes - B. Riley FBR Operator Good day and welcome to Hallador Energy's Fourth Quarter and Year-End 2019 Conference Call and Webcast. [Operator Instructions] Please note this event is being recorded. I would now like to turn the conference over to Ms. Becky Palumbo, Investor Relations. ...