Lumen Results Presentation Deck

2Q23 Mass Markets Broadband Metrics Fiber ARPU and Enabled Locations Increasing Q/Q 9 Fiber(1) Enabled Locations Subscribers Other (¹) Enabled Locations Subscribers 2Q23 3.4 M 877K 2Q23 18.4M 2.0M Y/Y Change (²) 540K 91K Y/Y Change (²) (516K) (374K) Q/Q Change 130K 21K Q/Q Change (64K) (93K) (1) For more information on how we calculate enabled locations and subscribers, see our accompanying earnings release. (2) Prior year amounts have been adjusted to remove the impacts of the 20-state ILEC business divestiture completed October 3, 2022, which included (i) fiber broadband subscribers of 72 thousand, (ii) other broadband subscribers of 1,113 thousand, (iii) fiber broadband enabled units of 0.3 million and (iv) other broadband enabled units of 7.2 million. The Company believes that this information will allow analysts and investors to understand the operating metrics associated with the divestiture of the 20-state ILEC business to understand the impact they had in relation to historical performance which will not recur. ~130K Fiber Enabled Locations Adds Q/Q >+60 average NPS score on Quantum Fiber ~$61 Fiber Broadband ARPU Quantum FIBER

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