X0609 4 2026-09-18 0 0001714562 GameSquare Holdings, Inc. GAME 0002007832 Munoz Michael Patrick false C/O GAMESQUARE HOLDINGS, INC. 6775 COWBOYS WAY, STE. 1335 FRISCO TX 75034 0 1 0 0 Chief Financial Officer 0 Common Stock 11481 D Common Stock 2026-09-18 4 M 0 26156 A 37637 D Common Stock 2026-09-18 4 M 0 4036 A 41673 D Common Stock 2026-09-18 4 M 0 6052 A 47725 D Options to Purchase Common Stock Common Stock 37657 D Options to Purchase Common Stock 3.31 2026-09-18 4 A 0 26156 0 A 2031-09-18 Common Stock 26156 63813 D Restricted Stock Units Common Stock 10089 D Restricted Stock Units 2026-09-18 4 A 0 26156 0 A Common Stock 26156 36245 D Restricted Stock Units 2026-09-18 4 M 0 26156 0 D Common Stock 26156 10089 D Restricted Stock Units 2026-09-18 4 M 0 6052 0 D Common Stock 6052 4037 D Balance from prior Form 4 updated to reflect 1 for 8 reverse stock split which occurred on August 24, 2026. Represents shares acquired on vesting and settlement of restricted stock units ("RSUs") granted to the Reporting Person on September 18, 2026. 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 2024 Stock Incentive Plan, as amended, on September 18, 2026 (the "Grant Date"), of options to purchase an aggregate of 26,156 shares of the Issuer's Common Stock, each representing a contingent right to receive one share of the Issuer's Common Stock. The grant vests in full on the Grant Date. Reflects the one-time grant under the Issuer's 2024 Stock Incentive Plan, as amended, on September 18, 2026, of 26,156 RSUs, which vest on the Grant Date and will convert into one share of Issuer's Common Stock. Represents shares acquired on vesting and settlement of RSUs granted to the Reporting Person on July 11, 2025. /s/ Michael Munoz 2026-09-22