---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-23-084522"
form_type: "8-K"
ticker: null
cik: "0001849548"
company_name: "Onyx Acquisition Co. I"
filed_at: "2023-11-08T23:59:59+00:00"
generated_at: "2026-06-08T10:52:26.089063+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Onyx Acquisition Co. I increases sponsor promissory note to $1.47M

## Summary
- Amended and restated promissory note with sponsor for up to $1,470,000, replacing $720,000 prior note.
- Note bears no interest, matures at business combination, and is payable only from funds outside trust account.
- Sponsor waives any claim against trust account; note is subordinated to trust assets.
- Proceeds intended to fund working capital for the SPAC's business combination search.

## SEC filing metadata
- accession: 0001213900-23-084522
- form_type: 8-K
- cik: 0001849548
- company_name: Onyx Acquisition Co. I
- filed_at: 2023-11-08T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1849548/000121390023084522/0001213900-23-084522-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1849548/000121390023084522/ea187693-8k_onyxacq1.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-23-084522
- JSON: https://secwatch.observer/filing/0001213900-23-084522.json
- Plain text: https://secwatch.observer/filing/0001213900-23-084522.txt

## Key facts
- Debt Financings
  Onyx Acquisition Co. I incurred loan of up to $1,470,000 with Onyx Acquisition Sponsor Co. LLC at does not bear interest maturing the date of consummation the Business Combination.
  - Instrument: loan
  - Principal: up to $1,470,000
  - Counterparty: Onyx Acquisition Sponsor Co. LLC
  - Rate: does not bear interest
  - Maturity: the date of consummation the Business Combination
  - Event: incurrence
  source text: On November 3, 2023, Onyx Acquisition Co. I (the “ Company ”) issued an amended and restated promissory note (the “ Restated Note ”) in an aggregate principal amount of up to $1,470,000 to Onyx Acquisition Sponsor Co. LLC (the “ Sponsor ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1849548/000121390023084522/0001213900-23-084522-index.htm

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