X0508 4/A 2026-02-09 2026-02-11 0 0001419951 Data Storage Corp DTST 0001448428 Piluso Charles M. C/O DATA STORAGE CORP 244 5TH AVENUE, SUITE 2821 NEW YORK NY 10001 1 1 1 0 Chairman and CEO 0 Common Stock 2026-02-09 4 A 0 160600 0 A 250032 D Represents the shares of the Issuer's common stock underlying a grant of a restricted stock unit ("RSU") to the Reporting Person on February 9, 2026. This amendment to Form 4 is filed to correctly disclose that such RSU award will vest in full on May 20, 2026 (having been inadvertently disclosed as vesting in full on the date of grant in the original Form 4 filed by the Reporting Person on February 11, 2026). RSUs convert into common stock on a one-for-one basis. /s/ Wendy Schmittzeh, Attorney-in-fact 2026-02-12