---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-056590"
form_type: "8-K"
ticker: "GTE"
cik: "0001273441"
company_name: "GRAN TIERRA ENERGY INC."
filed_at: "2023-05-05T23:59:59+00:00"
generated_at: "2026-06-15T15:58:40.222150+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Gran Tierra Energy completes 1-for-10 reverse stock split effective May 5, 2023

## Summary
- Outstanding shares reduced from ~333M to ~33.3M; authorized common shares set at 57M, preferred at 25M.
- Fractional shares rounded up/down per standard rounding; no fractional shares issued.
- New CUSIP 38500T200 and ISIN US38500T2006; symbol GTE unchanged on NYSE American, TSX, and LSE.
- Reverse split approved by board in Feb 2023 and stockholders at May 3, 2023 annual meeting.
- Trading on split-adjusted basis began May 5 on NYSE American and LSE; TSX adjusted trading starts May 8.

## SEC filing metadata
- accession: 0001104659-23-056590
- form_type: 8-K
- ticker: GTE
- cik: 0001273441
- company_name: GRAN TIERRA ENERGY INC.
- filed_at: 2023-05-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 3.03, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1273441/000110465923056590/0001104659-23-056590-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1273441/000110465923056590/tm2314731d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-056590
- JSON: https://secwatch.observer/filing/0001104659-23-056590.json
- Plain text: https://secwatch.observer/filing/0001104659-23-056590.txt

## Key facts
- Governance Changes
  GRAN TIERRA ENERGY INC.: 对公司章程进行修订，实施1:10反向股票拆分，调整授权股份数量为5700万股普通股和2500万股优先股。 (effective 2023-05-05).
  - Change: charter amendment
  - Effective: 2023-05-05
  source text: On May 4, 2023, the Company filed a Certificate of Amendment, effective as of May 5, 2023 (the “Amendment”), to the Company’s Certificate of Incorporation to effectuate the reverse stock split as of 12:01 a.m. Eastern Time on May 5, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1273441/000110465923056590/0001104659-23-056590-index.htm

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