---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-031042"
form_type: "8-K"
ticker: null
cik: "0001848756"
company_name: "Pyrophyte Acquisition Corp."
filed_at: "2026-03-19T23:59:59+00:00"
generated_at: "2026-05-15T09:41:24.765506+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Pyrophyte Acquisition extends Sio Silica deal outside date to April 29, 2027

## Summary
- Amendment No. 5 pushes outside date from April 29, 2026 to April 29, 2027.
- Previous amendments extended outside date to Dec 31, 2024, Apr 30, 2025, Dec 31, 2025, and Apr 29, 2026.
- No other changes to the business combination agreement were made.
- Transaction structure: domestication to Alberta, SPAC amalgamation, and Sio amalgamation unchanged.

## SEC filing metadata
- accession: 0001213900-26-031042
- form_type: 8-K
- cik: 0001848756
- company_name: Pyrophyte Acquisition Corp.
- filed_at: 2026-03-19T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1848756/000121390026031042/0001213900-26-031042-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1848756/000121390026031042/ea0282240-8k_pyrophyte.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-031042
- JSON: https://secwatch.observer/filing/0001213900-26-031042.json
- Plain text: https://secwatch.observer/filing/0001213900-26-031042.txt

## Key facts
- Material Agreements
  Pyrophyte Acquisition Corp. amended Amendment No. 5 with Sio Silica Corporation, Snowbank NewCo Alberta ULC, Sio Silica Incorporated (effective 2026-03-13).
  - Action: amendment
  - Agreement: merger
  - Counterparty: Sio Silica Corporation, Snowbank NewCo Alberta ULC, Sio Silica Incorporated
  - Effective: 2026-03-13
  source text: On March 13, 2026, Pyrophyte Acquisition Corp., a Cayman Islands exempted company (“ Pyrophyte ”), entered into an amendment “ Amendment No. 5 ”) to the previously announced business combination agreement, dated November 13, 2023, by and among Pyrophyte, Sio Silica Corporation, an Alberta corporation (“ Sio ”), Snowbank NewCo Alberta ULC, an Alberta unlimited liability corporation and a wholly-owned subsidiary of Pyrophyte (“ Pyrophyte Newco ”), and Sio Silica Incorporated, an Alberta corporation (“ Sio Newco ”) (the “ Sio Business Combination Agreement ”), with Sio, Pyrophyte Newco and Sio Newco, pursuant to which the parties agreed to extend the outside date from April 29, 2026 to April 29, 2027.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1848756/000121390026031042/0001213900-26-031042-index.htm

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