Form 144 Proposed Sale Notice Filed for HSBC Holdings plc

Executive Summary

A Form 144 notice of proposed sale was filed on October 5, 2026, by Cardoso da silva Sergio Tony, identified as an "Heir, investor" of HSBC Holdings plc (NYSE: HSBC). The filing proposes the sale of HSBC ADRs through broker HSBC Bank plc.

Filing & Transaction Analysis

• Security: HSBC Holdings plc ADR (each representing 5 ordinary shares, par value USD 0.50).
• Reported Units: 800,000,000,000 units.
• Aggregate Market Value: $97.03.
• Reported Units Outstanding: 900,000,000,000.
• Acquisition Details: Reported as acquired via "Heritage" on 02/27/2026 from HSBC Bank plc.
• Approximate Sale Date: 02/26/2026.

Data Integrity and Market Impact

• Trading Significance: Low.
• The filing contains extreme data anomalies. The reported volume (800 billion units) and outstanding count (900 billion units) drastically diverge from HSBC's actual share capital, while the reported total market value is only $97.03. This strongly suggests input errors or an irregular filing submitted by an individual filer rather than an institutional or corporate insider action.