---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-016351"
form_type: "8-K"
ticker: "MCGA"
cik: "0002064658"
company_name: "Yorkville Acquisition Corp."
filed_at: "2026-02-17T23:59:59+00:00"
generated_at: "2026-05-16T02:35:33.673458+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Yorkville Acquisition Corp. issues $250K working capital note to sponsor, convertible at $10/unit

## Summary
- Issued $250,000 convertible unsecured promissory note to sponsor Yorkville Acquisition Sponsor, LLC for working capital.
- Note bears no interest; principal due at earlier of business combination or winding up.
- Sponsor may convert principal into units at $10.00 per unit, identical to private placement units, up to 25,000 New Units.
- Conversion would yield Class A ordinary shares and one-third redeemable warrant per unit.

## SEC filing metadata
- accession: 0001104659-26-016351
- form_type: 8-K
- ticker: MCGA
- cik: 0002064658
- company_name: Yorkville Acquisition Corp.
- filed_at: 2026-02-17T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2064658/000110465926016351/0001104659-26-016351-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2064658/000110465926016351/tm266595d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-016351
- JSON: https://secwatch.observer/filing/0001104659-26-016351.json
- Plain text: https://secwatch.observer/filing/0001104659-26-016351.txt

## Source-grounded claims
- claim_id: 74e9a877f8f69ded9c992b67814340d6a056bdda
  claim: Yorkville Acquisition Corp. incurred convertible notes of $250,000.00 with Yorkville Acquisition Sponsor, LLC at shall not accrue interest maturing the earlier of the date on which Company consummates its initial business combination or the date that the winding up of the Company is effective.
  evidence_excerpt: issued a convertible unsecured promissory note (the “Working Capital Note”) in the aggregate principal amount of $250,000.00 to Yorkville Acquisition Sponsor, LLC
  evidence_url: https://www.sec.gov/Archives/edgar/data/2064658/000110465926016351/0001104659-26-016351-index.htm
- claim_id: 55cb1185928e164ec4f364ab03fb82b600dc3b20
  claim: Yorkville Acquisition Corp. entered into Working Capital Note with Yorkville Acquisition Sponsor, LLC valued at $250,000.00 (effective 2026-02-11).
  evidence_excerpt: On February 11, 2026, Yorkville Acquisition Corp. (the “Company”) issued a convertible unsecured promissory note (the “Working Capital Note”) in the aggregate principal amount of $250,000.00 to Yorkville Acquisition Sponsor, LLC, a Delaware limited liability company (the “Sponsor”), in order to provide the Company with additional working capital.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2064658/000110465926016351/0001104659-26-016351-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.