---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-043221"
form_type: "8-K"
ticker: "OSG"
cik: "0000874501"
company_name: "OCTAVE SPECIALTY GROUP INC"
filed_at: "2025-09-30T23:59:59+00:00"
generated_at: "2026-05-17T05:20:51.415429+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Ambac accelerates PSU vesting for CEO, CFO, COO after Assurance sale; 2023 awards at 121.5%

## Summary
- PSU acceleration effective Sept 30, 2025, after Sept 29 closing of Ambac Assurance sale.
- 2023 PSUs vest at 121.5% of target; 2024 PSUs at 100% of target.
- CEO Claude LeBlanc receives 368,313 vested PSUs, CFO David Trick 89,071, COO R. Sharon Smith 79,441.
- Committee cited concluded legacy business activities as reason for acceleration.

## SEC filing metadata
- accession: 0001628280-25-043221
- form_type: 8-K
- ticker: OSG
- cik: 0000874501
- company_name: OCTAVE SPECIALTY GROUP INC
- filed_at: 2025-09-30T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/874501/000162828025043221/0001628280-25-043221-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/874501/000162828025043221/ambc-20250930.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-043221
- JSON: https://secwatch.observer/filing/0001628280-25-043221.json
- Plain text: https://secwatch.observer/filing/0001628280-25-043221.txt

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