---
schema_version: "secwatch.filing_event.v1"
accession: "0001611983-25-000015"
form_type: "8-K"
ticker: "LBRDA"
cik: "0001611983"
company_name: "Liberty Broadband Corp"
filed_at: "2025-05-13T23:59:59+00:00"
generated_at: "2026-05-21T16:02:24.956369+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Liberty Broadband imposes SOX blackout on Series C stock ahead of GCI Liberty spin-off

## Summary
- Blackout for Liberty Broadband Series C stock begins as early as 4:00 p.m. ET on May 30, 2025 or as late as Aug 28, 2025; expected to last ~25 business days.
- GCI Liberty Series C common stock blackout begins on distribution date (expected summer 2025, between June 2 and Aug 29).
- Directors and executive officers prohibited from trading Liberty Broadband and GCI Liberty securities during blackout under Section 306 of SOX.
- Blackout facilitates creation of GCI Group common stock fund in the GCI 401(k) Plan after the spin-off.

## SEC filing metadata
- accession: 0001611983-25-000015
- form_type: 8-K
- ticker: LBRDA
- cik: 0001611983
- company_name: Liberty Broadband Corp
- filed_at: 2025-05-13T23:59:59+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.04, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1611983/000161198325000015/0001611983-25-000015-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1611983/000161198325000015/lbrda-20250513x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001611983-25-000015
- JSON: https://secwatch.observer/filing/0001611983-25-000015.json
- Plain text: https://secwatch.observer/filing/0001611983-25-000015.txt

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