Toronto, Ontario, September 1, 2022 – Nighthawk Gold Corp. (“Nighthawk” or the “Company”) (TSX: NHK; OTCQX: MIMZF) is pleased to report additional drill assay results from its 2022 Exploration Program, with encouraging results from the Grizzly Bear Deposit and 24 and 27 Deposits (collectively, the “24/27 Deposit”) within the Colomac Centre Area. Table 1 – Highlight Drill Assay Results from the 24/27 and Grizzly Bear Deposits Hole ID Deposit Highlight Assay Result TFS22-10 24/27 2.91 grams per tonne (“g/t Au”) over 54.35 metres (“m”) (including 16.28 g/t Au over 2.00 m) TFS22-08 24/27 2.52 g/t Au over 40.75 m (including 5.07 g/t Au over 18.75 m) TFS22-27 24/27 4.14 g/t Au over 7.75 m (including 34.40 g/t Au over 0.50 m) GB22-31 Grizzly Bear 3.02 g/t Au over 20.25 m (including 22.69 g/t Au over 1.00 m) GB22-29 Grizzly Bear 1.41 g/t Au over 21.50 m (2.50 g/t Au over 10.25 m) Note: True widths remain undetermined at this stage. All assays are uncut. Further statistical analysis will be required prior to establishing a suitable cut grade. Nighthawk President & CEO Keyvan Salehi commented, “The latest drill results, combined with results released previously from Grizzly Bear1 and 24/272 Deposits, demonstrate the immense potential for mineral resource expansion within the Colomac Centre.” Figure 1 – 24/27 Deposits Isometric View Looking West

Figure 2 – The Grizzly Bear Deposit Isometric View Looking West

24/27 Deposit

The Colomac Centre Area (please refer to Figure 3 for the Plan View Map) represents a group of five proximal deposits (Colomac Main, Grizzly Bear, Goldcrest, 24/27) in the heart of the Colomac Gold Project. The Company continued to intersect higher-grade intervals from the infill and step-out drilling at the 24/27 Deposit. Nighthawk has identified stacked zones of mineralization, increasing the width of the mineralized corridor, suggesting the potential expansion of the mineral resources in the area. Mineralization continues to remain open in all directions of 24/27 Deposit. Please refer to Figures 1, 4, and 5 for the 24/27 Deposit drilling Isometric, Plan, and Section views, respectively. Please refer to Tables 1 and 2 for the Highlight Drill Assay Results and Drill Assay Results Summary, respectively.

Grizzly Bear Deposit The Grizzly Bear Deposit is located approximately 800 m southwest of the Colomac Main Deposit. Mineralization at the Grizzly Bear Deposit is hosted in smoky quartz veining in the felsic volcanic porphyry, along the lower contact to the mafic-intermediate volcanics. The current batch of drill results intersected downdip mineralized intervals along the boundary and outside of the pit-constrained Grizzly Bear Deposit 2022 Mineral Resource Estimate3, suggesting the potential expansion of the mineral resources in the area. Please refer to Figures 2, 6, 7, and 8 for the Isometric View, Plan View, Section View #1, and Section View #2 of the Grizzly Bear Deposit drilling, respectively. Figure 3 – Colomac Centre Plan View Map

Figure 4 – 24/27 Deposits – Local Plan View

Figure 5 – 27 Deposit – Section View #1

Figure 6 – Grizzly Bear Deposit Local Plan View

Figure 7 – Grizzly Bear Section View #1

Figure 8 – Grizzly Bear Deposit Section View #2

Table 2 – Drill Assay Results Summary – Grizzly Bear and 24/27 Deposits Hole ID Interval (m) Core Length Gold Grade From To (m) (g/t Au) Grizzly Bear Deposit GB22-09 133.50 152.00 18.50 0.40 including 133.50 135.00 1.50 2.24 GB22-12 226.00 227.50 1.50 5.42 GB22-13 No Significant Intervals GB22-17 43.75 44.50 0.75 2.05 and 83.00 105.25 22.25 1.02 including 103.75 104.75 1.00 11.65 GB22-18 73.25 74.00 0.75 2.79 and 101.25 125.00 23.75 0.59 including 124.25 125.00 0.75 8.69 GB22-19 72.00 73.00 1.00 1.61 GB22-20 132.50 141.75 9.25 0.77 including 141.00 141.75 0.75 5.59 GB22-21 138.00 149.00 11.00 0.97 GB22-22 No Significant Intervals GB22-23 109.00 126.00 17.00 1.44 including 114.75 115.50 0.75 12.65 GB22-24 65.00 70.25 5.25 1.52 and 121.50 124.00 2.50 6.47 GB22-25 No Significant Intervals GB22-26 No Significant Intervals GB22-27 147.40 150.50 3.10 2.05 GB22-28 17.90 18.65 0.75 3.88 and 84.50 104.00 19.50 0.99 including 98.50 99.00 0.50 11.60 GB22-29 104.50 126.00 21.50 1.41 including 115.75 126.00 10.25 2.50 GB22-30 91.65 93.50 1.85 1.07 and 101.00 102.00 1.00 2.10 GB22-31 129.50 149.75 20.25 3.02 including 129.50 130.50 1.00 22.69 GB22-32 78.20 99.25 21.05 0.54 including 80.20 80.70 0.50 9.52 GB22-33 68.50 70.00 1.50 2.36 GB22-34 147.00 147.75 0.75 2.27 24/27 Deposit TFS22-08 7.25 10.20 2.95 7.36 and 44.00 84.75 40.75 2.52 including 66.00 84.75 18.75 5.07 TFS22-10 49.15 65.00 15.85 0.63 including 64.00 65.00 1.00 6.77 and 101.00 155.35 54.35 2.91 including 101.50 103.50 2.00 16.28 TFS22-12 57.00 58.50 1.50 1.27 and 88.00 89.50 1.50 5.22 and 163.50 182.00 18.50 0.56 including 170.75 172.50 1.75 3.01 and 211.00 234.00 23.00 1.04 including 211.00 211.50 0.50 20.90 TFS22-18 113.00 114.50 1.50 2.31 and 159.65 160.65 1.00 4.95 TFS22-19 Lost Hole TFS22-23 33.50 35.00 1.50 2.81 and 70.00 71.00 1.00 1.08 TFS22-24 150.50 152.00 1.50 2.04 and 158.75 160.00 1.25 1.46 TFS22-27 53.65 56.40 2.75 0.79 and 82.00 82.50 0.50 2.32 and 104.60 112.35 7.75 4.14 including 111.85 112.35 0.50 34.40 TFS22-28 77.50 79.00 1.50 5.39 and 123.25 125.00 1.75 2.15 and 151.00 166.25 15.25 1.23 TFS22-29 139.00 140.50 1.50 1.13 and 163.50 164.50 1.00 3.19 and 220.00 228.50 8.50 0.67 and 239.75 243.00 3.25 1.27 TFS22-30 68.75 71.00 2.25 1.43 TFS22-31 104.00 104.50 0.50 10.05 TFS22-32 81.30 86.30 5.00 0.57 TFS22-33 78.00 79.00 1.00 2.21 TFS22-23 33.50 35.00 1.50 2.81 and 70.00 71.00 1.00 1.08 TFS22-24 150.50 152.00 1.50 2.04 and 158.75 160.00 1.25 1.46 TFS22-27 53.65 56.40 2.75 0.79 and 82.00 82.50 0.50 2.32 and 104.60 112.35 7.75 4.14 including 111.85 112.35 0.50 34.40 TFS22-28 77.50 79.00 1.50 5.39 and 123.25 125.00 1.75 2.15 and 151.00 166.25 15.25 1.23 TFS22-29 139.00 140.50 1.50 1.13 and 163.50 164.50 1.00 3.19 and 220.00 228.50 8.50 0.67 and 239.75 243.00 3.25 1.27 TFS22-30 68.75 71.00 2.25 1.43 TFS22-31 104.00 104.50 0.50 10.05 TFS22-32 81.30 86.30 5.00 0.57 TFS22-33 78.00 79.00 1.00 2.21 TFS22-34 No Significant Intervals TFS22-35 228.00 229.00 1.00 4.11 TFS22-36 Lost Hole TFS22-37 65.00 74.50 9.50 0.88 and 122.75 125.75 3.00 0.98 and 151.50 164.00 12.50 1.76 including 160.50 162.00 1.50 6.88 and 184.00 185.00 1.00 2.89 TFS22-38 No Significant Intervals TFS22-39 No Significant Intervals TFS22-40 No Significant Intervals Note: True widths remain undetermined at this stage. All assays are uncut. Further statistical analysis will be required prior to establishing a suitable cut grade. Deposit BHID Easting Northing Elevation Length Azimuth Dip Grizzly Bear GB22-09 590681 7140318 344 180 300 -45 Grizzly Bear GB22-12 590699 7140277 353 252 300 -60 Grizzly Bear GB22-13 590663 7140254 354 225 300 -50 Grizzly Bear GB22-17 590445 7140018 344 201 330 -45 Grizzly Bear GB22-18 590445 7140018 344 252 330 -60 Grizzly Bear GB22-19 590419 7139974 341 252 330 -55 Grizzly Bear GB22-20 590335 7139900 334 201 310 -45 Grizzly Bear GB22-21 590335 7139900 334 222 310 -60 Grizzly Bear GB22-22 590274 7139895 330 150 310 -45 Grizzly Bear GB22-23 590274 7139895 330 177 310 -60 Grizzly Bear GB22-24 590184 7139817 324 150 335 -60 Grizzly Bear GB22-25 590187 7139745 325 225 330 -50 Grizzly Bear GB22-26 590187 7139745 325 234 330 -60 Grizzly Bear GB22-27 590158 7139744 325 201 315 -56 Grizzly Bear GB22-28 590117 7139717 327 156 315 -45 Grizzly Bear GB22-29 590117 7139717 327 177 315 -55 Grizzly Bear GB22-30 590085 7139676 329 168 315 -48 Grizzly Bear GB22-31 590085 7139676 329 204 315 -62 Grizzly Bear GB22-32 590024 7139667 328 128.2 315 -60 Grizzly Bear GB22-33 589943 7139607 329 115.7 315 -56 Grizzly Bear GB22-34 590020 7139635 329 225 315 -72 24/27 TFS22-08 595509 7144839 372 150 95 -50 24/27 TFS22-10 595446 7144810 382 225 95 -45 24/27 TFS22-12 595446 7144810 382 300 95 -65 24/27 TFS22-18 595398 7145197 361 201 70 -60 24/27 TFS22-19 595503 7144746 378 12 95 -45 24/27 TFS22-23 595440 7145192 354 126 70 -50 24/27 TFS22-24 595407 7145180 358.725 225 70 -60 24/27 TFS22-27 595496 7144720 374 150 95 -45 24/27 TFS22-28 595496 7144720 374 225 95 -60 24/27 TFS22-29 595389 7145117 356 276 65 -58 24/27 TFS22-30 595500 7144695 373 150 95 -45 24/27 TFS22-31 595455 7145139 354 210 65 -58 24/27 TFS22-32 595500 7144695 373 225 95 -60 24/27 TFS22-33 595420 7143221 380 348 100 -50 24/27 TFS22-34 595502 7144672 373 45 95 -45 24/27 TFS22-35 595366 7143093 383 351 100 -50 24/27 TFS22-36 595503 7144746 378 21 95 -60 24/27 TFS22-37 595503 7144746 378 195 95 -65 24/27 TFS22-38 595501 7144672 373 21 95 -45 24/27 TFS22-39 595501 7144672 373 177 95 -53 24/27 TFS22-40 595493 7144656 378 162 95 -45 Technical Information The pit shell outlines in Figures 1 to 8 are from the 2022 MRE3 and were completed by InnovExplo Inc. and are defined by a US$1,600/oz gold price assumption.

Nighthawk has implemented a quality-control program to comply with best practices in the sampling and analysis of drill core.  Drill core samples were transported in security-sealed bags for analyses at ALS Global Assay Laboratory in Vancouver, BC (“ALS Global”). ALS Global is an ISO/IEC 17025 accredited laboratory. Halved drill core is stored on site and pulps are returned and stored for record.

As part of its QA/QC program, Nighthawk inserts external gold standards (low to high-grade), blanks and duplicates every 20 samples in addition to the standards, blanks, and pulp duplicates inserted by ALS Global.

Qualified Person

John McBride, MSc., P.Geo., Vice President of Exploration for Nighthawk, who is the “Qualified Person” as defined by NI 43-101 for this project, has reviewed and approved of the technical disclosure contained in this news release.

About Nighthawk Nighthawk is a Canadian-based gold exploration company with 100% ownership of more than 930 km2 of district-scale land position within the Indin Lake Greenstone Gold Belt, located approximately 200 km north of Yellowknife, Northwest Territories, Canada. The Company is advancing several highly prospective exploration targets. The Colomac Centre and Satellite deposits currently has a Mineral Resource Estimate3 of 58.2 million tonnes grading 1.44 g/t Au for 2.69 million ounces in the Indicated category and 19.7 million tonnes grading 2.10 g/t Au for 1.33 million ounces in the Inferred category. Nighthawk’s experienced management team, with a track record of successfully advancing projects and operating mines, is working towards demonstrating the economic viability of its assets and rapidly advancing its projects towards a development decision. FOR FURTHER INFORMATION PLEASE CONTACT:

NIGHTHAWK GOLD CORP.

Tel: 1-416-880-7090; Email: info@nighthawkgold.com Website: www.nighthawkgold.com Keyvan Salehi President & CEO Michael Leskovec CFO Allan Candelario VP, Investor Relations & Corporate Development Forward-Looking Information This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, information with respect to the Company’s mineral resource estimates, potential expansion of pit-constrained mineralization, potential expansion of mineral resource estimates, the potential for higher-grade assay results, continued exploration and drilling initiatives and having the necessary funding required to complete these initiatives, the prospectivity of exploration targets, the potential economic viability of the assets, and the advancement of projects towards a development decision. Generally, forward-looking information can be identified by the use of forward-looking terminology such as “add” or “additional”, “advancing”, “anticipates” or “does not anticipate”, “appears”, “believes”, “can be”, “continue”, “demonstrating”, “estimates”, “encouraging”, “expand” or “expanding” or “expansion”, “expect” or “expectations”, “forecasts”, “forward”, “goal”, “increase”, “intends”, “justification”, “support”, “plans”, “potential” or “potentially”, “prospective”, “prioritize”, “reflects”, “scheduled”, “suggesting”, “updating”, “will be” or “will consider”, “work towards”, ,or variations of such words and phrases or state that certain actions, events or results “may”, “could”, “would”, “might”, or "will be taken", "occur", or "be achieved". Forward-looking information is based on the opinions and estimates of management at the date the information is made, and is based on a number of assumptions and is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of Nighthawk to be materially different from those expressed or implied by such forward-looking information, including risks associated with the exploration, development and mining such as economic factors as they effect exploration, future commodity prices, changes in foreign exchange and interest rates, actual results of current exploration activities, government regulation, political or economic developments, impact of inflation, impact of the war in Ukraine, risks associated with the COVID-19 pandemic, environmental risks, permitting timelines, capital expenditures, operating or technical difficulties in connection with development activities, employee relations, the speculative nature of gold exploration and development, including the risks of diminishing quantities of grades of reserves, contests over title to properties, and changes in project parameters as plans continue to be refined as well as those risk factors discussed in Nighthawk’s annual information form for the year ended December 31, 2021, available on www.sedar.com.  Although Nighthawk has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. Nighthawk does not undertake to update any forward-looking information, except in accordance with applicable securities laws. 1 Please refer to the Nighthawk July 19, 2022 news release, which is available on the Company’s website at www.nighthawkgold.com and in the Company’s profile in www.sedar.com. 2 Please refer to the Nighthawk July 27, 2022 news release, which is available on the Company’s website at www.nighthawkgold.com and in the Company’s profile in www.sedar.com. 3For more information on the Mineral Resource Estimate (“2022 MRE”) please refer to the March 8, 2022 news release and in the Company’s NI 43-101 technical report entitled “NI 43-101 Technical Report and Update of the Mineral Resource Estimate for the Indin Lake Gold Property, Northwest Territories, Canada” and dated March 31, 2022 (“Technical Report”), which is available on SEDAR www.sedar.com and on the Company’s website at www.nighthawkgold.com. John McBride, Vice President of Exploration of Nighthawk, who is the “Qualified Person” as defined by NI 43-101, has reviewed, and approved of the scientific and technical disclosure contained in this news release.