---
schema_version: "secwatch.filing_event.v1"
accession: "0000891092-21-005903"
form_type: "8-K"
ticker: "SIEB"
cik: "0000065596"
company_name: "SIEBERT FINANCIAL CORP"
filed_at: "2021-08-04T23:59:59+00:00"
generated_at: "2026-06-29T22:51:16.854335+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.05
calibrated_materiality_score: 0.05
confidence: "high"
source: SEC EDGAR
---

# Siebert Financial Corp. moves headquarters to 535 Fifth Avenue, New York

## Summary
- Effective August 4, 2021, headquarters relocated to 535 Fifth Avenue, 4th Floor, New York, NY 10017.
- Telephone number (212) 644-2400 remains unchanged.
- Prior address was 120 Wall Street, New York, NY 10005.

## SEC filing metadata
- accession: 0000891092-21-005903
- form_type: 8-K
- ticker: SIEB
- cik: 0000065596
- company_name: SIEBERT FINANCIAL CORP
- filed_at: 2021-08-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.05
- calibrated_materiality_score: 0.05
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/65596/000089109221005903/0000891092-21-005903-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/65596/000089109221005903/sieb8k2021.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000891092-21-005903
- JSON: https://secwatch.observer/filing/0000891092-21-005903.json
- Plain text: https://secwatch.observer/filing/0000891092-21-005903.txt

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