Astrum Space Inc

Exhibit 99.1 2026  FOLD HERE • DO NOT SEPARATE • INSERT IN ENVELOPE PROVIDED  210263 Black Spade BC Proxy Card Rev1 - Front PLEASE DO NOT RETURN THE PROXY CARD IF YOU ARE VOTING ELECTRONICALLY. INTERNET - www.cstproxyvote.com Use the Internet to vote your proxy. Have your proxy card available when you access the above website. Follow the prompts to vote your shares. VOTE AT THE MEETING - If you plan to attend the virtual online extraordinary general meeting, you will need your 12 digit contro…

F-4/A · 2026-11-05 · 0001213900-26-116443

Exhibit 4.1 NUMBER UNITS U- SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP G1154S129 BLACK SPADE ACQUISITION III CO UNITS CONSISTING OF ONE CLASS A ORDINARY SHARE AND ONE - THIRD OF ONE REDEEMABLE WARRANT, EACH WHOLE WARRANT ENTITLING THE HOLDER TO PURCHASE ONE CLASS A ORDINARY SHARE THIS CERTIFIES THAT is the owner of Units. Each Unit (“ Unit ”) consists of one (1) Class A ordinary share, par value $0.0001 per share (“ Class A ordinary shares ”), of Black Spade Acquisition III Co, a Cayman…

F-4 · 2026-10-15 · 0001213900-26-109899

Exhibit 4.2 NUMBER BLACK SPADE ACQUISITION III CO INCORPORATED UNDER THE LAWS OF THE CAYMAN ISLANDS CLASS A ORDINARY SHARES SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP G1154S103 This Certifies that is the owner of FULLY PAID AND NON-ASSESSABLE CLASS A ORDINARY SHARES OF THE PAR VALUE OF US$0.0001 EACH OF BLACK SPADE ACQUISITION III CO (THE “COMPANY”) Subject to the Company’s amended and restated memorandum and articles of association, as the same may be amended from time to time, and tr…

F-4 · 2026-10-15 · 0001213900-26-109899

Exhibit 4.3 [FACE] Number WARRANTS THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW BLACK SPADE ACQUISITION III CO Incorporated Under the Laws of the Cayman Islands CUSIP G1154S111 Warrant Certificate This Warrant Certificate certifies that [●], or registered assigns, is the registered holder of [●] warrant(s) (the “Warrants” and each, a “Warrant”) to purchase Class A ordinary shares, $0.0001 p…

F-4 · 2026-10-15 · 0001213900-26-109899

Exhibit 99.2 Astrum Space Inc 4th Floor, Harbour Place, 103 South Church Street, P.O. Box 10240, Grand Cayman KY1-1002, George Town, Cayman Islands October 15, 2026 Re: Consent Letter Dear Management Team of Astrum Space Inc: We hereby consent to the inclusion of our name and our Valuation of 25 MHz L-Band Spectrum Report, dated August 20, 2026 to the Board of Directors of Astrum Space Inc (the “Company”) as Exhibit 99 to, and to the references thereto in the proxy statement related to …

F-4 · 2026-10-15 · 0001213900-26-109899