http://archive.fast-edgar.com/20261105/A82ZBG2GZZ2RKZZZ2H9R2ZYKG8MHZZ22ZS82
Filed on: November 5, 2026
Filed Pursuant to Rule 424(b)(3) Registration No. 333-276868
PROSPECTUS SUPPLEMENT NO. 1
(TO PROSPECTUS DATED OCTOBER 16, 2026)
C3IS INC.
This is a supplement (“Prospectus Supplement”) to the prospectus, dated October 16, 2026 (“Prospectus”), of C3is Inc. (the “Company”), which forms a part of the Company’s Registration Statement on Form F-1 (Registration No. 333-276868), as amended or supplemented from time to time. This Prospectus Supplement is being... (continue reading...)
Filed by Constellation Acquisition Corp I
Pursuant to Rule 425 under the Securities Act of 1933
and deemed filed pursuant to Rule 14a-12
under the Securities Exchange Act of 1934
Subject Company: US Elemental Inc.
(Reg. No. 333-296412)
US Elemental and Constellation Announce SEC Effectiveness of Form S-4 Registration Statement
Proposed business combination advances toward planned Nasdaq listing
New York, New York, November 5, 2026 — HiTech Minerals... (continue reading...)
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