424B4
priced
Final prospectus
Final prospectus filed after pricing with final deal terms.
First tracked pre-IPO filing for this issuer.
Price $10.00
CLASS_A · Exchange NASDAQ · Ticker VSCI · Use of proceeds To pay transaction costs including legal, accounting, and underwriter fees · Flags units, warrants, cayman_holding_company
2026-09-22 · 0001829126-26-010292
EFFECT
effective
SEC effectiveness notice
SEC declared the registration statement effective, allowing the offering to proceed.
First tracked pre-IPO filing for this issuer.
2026-09-17 · 9999999995-26-002988
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
First tracked pre-IPO filing for this issuer.
Underwriters EF Hutton
2026-09-04 · 0001829126-26-009732
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
First tracked pre-IPO filing for this issuer.
Common Stock, Contingent Stock Rights, Warrants, and Shares Underlying Warrants · Exchange NASDAQ · Use of proceeds Proceeds from the Trust Account were used for shareholder redemptions, and the merger will result in the continuation of Vesicor as the surviving entity · Flags cayman_holding_company, foreign_private_issuer
2026-08-03 · 0001829126-26-008251
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior S-4/A filing.
Common Stock · Exchange NASDAQ · Use of proceeds To facilitate the business combination and related transactions · Flags cayman_holding_company, foreign_private_issuer
2026-07-06 · 0001829126-26-007231
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior S-4/A filing.
Common Stock · Exchange Nasdaq · Use of proceeds Redemption payments and extension fees · Flags cayman_holding_company
2026-06-11 · 0001829126-26-006338
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior S-4/A filing.
Common Stock · Exchange Nasdaq · Use of proceeds For the business combination and related transactions · Flags cayman_holding_company, foreign_private_issuer
The current S-4/A filing details Black Hawk Acquisition Corporation's plan to merge with Vesicor Therapeutics, Inc., involving a domestication from the Cayman Islands to Delaware and a business combination. Key updates include late extension payments for the business combination deadline, a breach of governance terms, and ongoing efforts to complete the merger despite legal uncertainties. The filing also outlines capital structure changes, convertible note terms, and the continuation of shareholder approvals.
2026-05-01 · 0001829126-26-004346
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior S-4/A filing.
Common Stock, Contingent Stock Rights, Warrants, and Shares Underlying Warrants · Exchange NASDAQ · Use of proceeds Funds used for shareholder redemptions and extension fees · Flags cayman_holding_company, foreign_private_issuer
Vesicor Therapeutics, Inc. is undergoing a business combination with Black Hawk Acquisition Corporation, involving a domestication from the Cayman Islands to Delaware and a merger. The filing details extensions to the business combination deadline, late payments for these extensions, and the subsequent resolution. The company addresses risks related to delayed payments, potential liquidation, and legal claims, while proceeding with the merger and shareholder approvals.
2026-03-05 · 0001829126-26-001934
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior S-4/A filing.
Common Stock, Contingent Stock Rights, Warrants, and Shares Underlying Warrants · Exchange Nasdaq · Use of proceeds For the business combination and related transaction costs · Flags cayman_holding_company, foreign_private_issuer
Vesicor Therapeutics, Inc. is undergoing a business combination with Black Hawk Acquisition Corporation (SPAC), involving a merger and domestication from the Cayman Islands to Delaware. The transaction includes a share conversion, issuance of PubCo Common Stock, and assumption of warrants. The filing outlines the extension of the business combination timeline, funding through convertible notes, and the rebranding to Vesicor Therapeutics Holdings, Inc. following the merger.
2026-01-26 · 0001829126-26-000517
S-4/A
amended
S-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior S-4 filing.
ordinary shares · Exchange Nasdaq · warrants included in registration · Use of proceeds merger-related transactions · Flags cayman_holding_company, foreign_private_issuer, units
The current S-4/A filing details Black Hawk Acquisition Corporation's plan to merge with Vesicor Therapeutics, Inc., involving a domestication from the Cayman Islands to Delaware and a subsequent merger. The transaction includes share conversions, trust account adjustments, and extension payments to delay the business combination deadline. The filing also outlines compensation for the Sponsor and risks related to the merger's completion and shareholder returns.
2026-01-23 · 0001829126-26-000475
S-4
filed
S-4
Pre-IPO filing captured from the SEC submission timeline.
Follows DRS/A in the pre-IPO sequence.
Common Stock of Vesicor Therapeutics Holdings, Inc. · Exchange NASDAQ · Use of proceeds To facilitate the business combination and related transactions · Flags cayman_holding_company
Vesicor Therapeutics, Inc. is undergoing a business combination with Black Hawk Acquisition Corporation (SPAC), involving a merger and domestication from the Cayman Islands to Delaware. The transaction includes a name change to Vesicor Therapeutics Holdings, Inc., securities conversion, and redemption of public shares. The SPAC plans to extend the business combination timeline via convertible notes funded by the Sponsor, with $750,000 already deposited into the Trust Account.
2025-12-23 · 0001829126-25-010259
DRS/A
amended
Amended draft registration statement
Updated draft registration filed before the public launch.
Updates the prior DRS/A filing.
Vesicor Therapeutics, Inc. filed a DRS/A on 2025-09-23 detailing financial updates, regulatory developments, and operational changes. The filing highlights increased operating expenses, $485,000 in gross proceeds from a 2025 Private Placement, and $320,000 in business combination-related payments. Financial comparisons show a net loss of $141,176 for Q1 2025 vs. $66,089 in Q1 2024, driven by higher general and administrative costs. The company anticipates rising expenses due to FDA approval processes and public company requirements. Liquidity concerns persist, with reliance on future capital raises.
2025-09-23 · 0001829126-25-007578
DRS/A
amended
Amended draft registration statement
Updated draft registration filed before the public launch.
First tracked pre-IPO filing for this issuer.
Vesicor Therapeutics, Inc. is developing its ecm-RV/p53 product candidate, a novel therapeutic based on microvesicle technology, which has not yet received regulatory approval for clinical trials or commercial use. The company faces significant risks related to obtaining FDA approvals, competitive pressures, intellectual property protection, clinical trial success, and commercialization challenges. Key uncertainties include the novelty of its technology, reliance on regulatory discretion, and the potential for delays or failures in development and approval processes.
2025-08-04 · 0001829126-25-005721