X0609 4 2026-09-01 0 0002084026 QumulusAI, Inc. QMLS 0002097259 Krosnowski Scott Carroll false 817 W PEACHTREE STREET NW, SUITE 935 ATLANTA GA 30308 0 1 0 0 Chief Financial Officer 0 Common Stock 2026-09-01 4 A 0 85179 0 A 118513 D Common Stock 2026-09-01 4 A 0 103934 0 A 222447 D Common Stock 2026-09-01 4 A 0 122400 0 A 344847 D Common Stock 2026-09-01 4 A 0 9633 0 A 354480 D These shares vest with respect to 21,295 shares on September 1, 2026 and with respect to 6.25% of the remaining shares quarterly over 12 quarters commencing December 1, 2026 pursuant to a restricted stock unit award granted under the QumulusAI, Inc. 2026 Equity Incentive Plan, conditioned upon the Reporting Person remaining an employee of QumulusAI, Inc. through the applicable vesting date. These shares vest on September 1, 2026 pursuant to a restricted stock unit award granted under the QumulusAI, Inc. 2026 Equity Incentive Plan. These shares vest with respect to 30,600 shares on September 1, 2027 and with respect to 6.25% of the remaining shares quarterly over 12 quarters commencing December 1, 2027 pursuant to a restricted stock unit award granted under the QumulusAI, Inc. 2026 Equity Incentive Plan, conditioned upon the Reporting Person remaining an employee of QumulusAI, Inc. through the applicable vesting date. These shares vest with respect to 4,817 shares on February 24, 2027, with respect to 2,408 shares on May 24, 2027, and with respect to 2,408 shares on August 24, 2027. Includes 195,917 shares to be issued upon vesting pursuant to restricted stock unit awards granted under the QumulusAI, Inc. 2026 Equity Incentive Plan, conditioned upon the Reporting Person remaining an employee of QumulusAI through the applicable vesting dates. /s/ Scott Carroll Krosnowski 2026-09-02