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, highlighting recent financial performance, business combination payments, and updates on clinical trial processes. The company reported increased operating expenses, a net loss of $141,176 for Q1 2025, and revenue from limited microvesicle-based product sales. It issued 258,668 units in a private placement, raising $485,000, and made payments related to its business combination. The filing emphasizes ongoing challenges with FDA regulatory approval, financial sustainability, and the risks of clinical trial delays and commercialization hurdles.
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 seeking regulatory approval for its ecm-RV/p53 product candidate, which remains in early development with no clinical trials or commercial approvals achieved. The company highlights significant uncertainties around regulatory acceptance, competitive challenges, reimbursement viability, intellectual property protection, and clinical trial success. Key risks include FDA discretion in approvals, unproven therapeutic efficacy, and substantial development costs. The company anticipates no regulatory review initiation before late 2026.
2025-08-04 · 0001829126-25-005721