Sidus Space, Inc. reported the resignation of two independent board members on October 6, 2026. Tiffany Norwood resigned from the Board of Directors and her roles as Audit Committee Chairwoman and member of the Corporate Governance/Nominating Committee, effective at 7:15 p.m. ET on the same date.

Ms. Norwood cited disagreements with the Company regarding governance and oversight matters, specifically mentioning the handling of a confidential complaint, in her resignation letter. The Company stated that it respectfully disagrees with the assertions and characterizations made in her letter.

Separately, Kelle Wendling resigned from the Board and her positions on the Audit Committee, Compensation Committee, and Corporate Governance/Nominating Committee, effective at 1:00 p.m. ET on October 6, 2026. Her resignation was based on concerns regarding the Company’s management and governance. The Company also indicated it disagrees with the substance of Ms. Wendling’s resignation letter.

Both resignation letters are attached as Exhibits 17.1 and 17.2 to the filing. The Company has offered both Ms. Norwood and Ms. Wendling the opportunity to provide a letter addressing the Company's response, which would be filed as an exhibit to an amendment to this report within two business days of receipt.