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ASX : NST September 2021 Quarterly Activities Report ASX Announcement 19 October 2021 386,160oz SOLD AT A $ 1,594 / oz AISC On track to meet FY22 guidance of 1.55-1.65Moz at AISC of A $ 1,475-1,575 / oz NORTHERN STAR RESOURCES LIMITED KEY POINTS Environment , Social and Safety ( ESS ) LTIFR at 0.8 ( WA Metalliferous average 2.0 ) ■ Set ambition to achieve Net Zero Scope 1 and 2 greenhouse gas emissions by 2050 , target for 2030 to be announced in the 2021 Sustainability Report due for release March quarter 2022 Production ■ Gold sold totalled 386,160oz at an AISC of A $ 1,594 / oz ( US $ 1,180 / oz ) ; By production centre : Kalgoorlie : 232,324oz gold sold at an AISC of A $ 1,533 / oz ○ Yandal : 109,844oz gold sold at an AISC of A $ 1,345 / oz ○ Pogo : 43,992oz gold sold at an AISC of US $ 1,751 / oz ■ Group all - in cost ( AIC ) of A $ 1,933 / oz As previously foreshadowed , planned FY22 production is weighted towards the second half , driven by increasing grades at Yandal and increasing mining rates at Pogo ; AISC expected to fall over the year On track to meet FY22 guidance of 1.55-1.65Moz at an AISC of A $ 1,475 - A $ 1,575 / oz Financial ■ September quarter average realised price of A $ 2,345 / oz for sales revenue of A $ 848M ( 196,751oz hedging delivered at A $ 2,242 / oz ) ■ Cash Earnings¹ of A $ 165M - A $ 175M Cash and bullion of A $ 756M at 30 September 2021 ( A $ 803M at June 30 ) after paying A $ 110M in dividends and investing A $ 123M in net growth capital and exploration ■ Corporate bank debt reduced to A $ 262M using funds received from the Kundana asset sale ■ Hedge book 839,819oz at average price of A $ 2,347 / oz at 30 September ( 801,570oz at A $ 2,286 / oz at 30 June ) Corporate ■ Chief Executive Officer Stuart Tonkin appointed Managing Director , effective 22 July 2021 Growth and Exploration ■ Completed the sale of the Kundana Assets to Evolution ( ASX : EVN ) for A $ 400M cash ; Sale is consistent with Northern Star's strategy of active portfolio management ▪ Key growth projects progressing in line with strategy to become a 2Mozpa producer by FY26 , including KCGM open pit development ( Kalgoorlie ) and Thunderbox mill expansion ( Yandal ) 1 Cash Earnings is defined as Underlying EBITDA less net interest , tax and sustaining capital Northern Star Resources Limited - ABN : 43 092 832 892 Level 1 , 388 Hay Street PO Box 2008 Subiaco WA 6008 , Australia Subiaco WA 6904 T : +61 8 6188 2100 E : info@nsrltd.com F : +61 8 6188 2111 W : www.nsrltd.com