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Form EFFECT Black Hawk Acquisition

September 18, 2026 6:03 AM EDT
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: September 17, 2026 5:30 P.M.
Form: S-4
CIK: 0002000775
Company Name: Black Hawk Acquisition Corp
File Number: 333-292402
CIK: 0001993074
Company Name: Vesicor Therapeutics, Inc.
File Number: 333-292402-01


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