X0508 4 2025-12-04 1 0001714562 GameSquare Holdings, Inc. GAME 0001937308 Lewin Nick C/O GAMESQUARE HOLDINGS, INC. 6775 COWBOYS WAY, STE. 1335 FRISCO TX 75034 0 0 0 1 former director 0 Common Stock 2025-12-04 4 M 0 150000 A 150000 D Common Stock 95668 I See Footnote Common Stock 67843 I See Footnote Restricted Stock Units 2025-12-04 4 A 0 150000 0 A Common Stock 150000 150000 D Restricted Stock Units 2025-12-04 4 M 0 150000 0 A Common Stock 150000 0 D Represents shares acquired on vesting and settlement of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Reflects the one-time grant under the Issuer's Amended and Restated Omnibus Equity Incentive Plan ("Omnibus Plan") on December 4, 2025 of 150,000 RSUs, which vest on the grant date and will convert into one share of Issuer's common stock. Includes (i) 95,668 shares held by CPH Phase II SPV LP and (ii) 67,943 shares held by CPH Phase III SPV LP. CPH Holdings VII, LLC was the sole general partner of each of CPH Phase II SPV LP and CPH Phase III SPV LP, and Nick Lewin is the sole manager of CPH Holdings VII, LLC. In such capacity, Mr. Lewin had sole voting and investment power over the securities held by CPH Phase II SPV LP and CPH Phase III SPV LP and, therefore, may be deemed to be the beneficial owner of such securities. With respect to the securities held by CPH Phase II SPV LP and CPH Phase III SPV LP, Mr. Lewin disclaims beneficial ownership, except to the extent of his pecuniary interest therein. The business address of CPH Phase II SPV LP and CPH Phase III SPV LP is 1230 Montana Avenue, Suite 201, Santa Monica, CA 90403. /s/ Nick Lewin 2025-12-08