Block, Inc. Director Anthony Eisen Files Form 144 Notice for Planned $442K Stock Sale

Executive Summary

On October 1, 2026, Anthony Mathew Eisen, a member of the Board of Directors of Block, Inc. (NYSE: SQ), filed a Form 144 notice proposing the sale of 6,000 shares of common stock with an estimated aggregate market value of $442,020.00 (implied price of ~$73.67 per share). The proposed transaction is scheduled to be executed through Morgan Stanley Smith Barney LLC on or about October 1, 2026.

Transaction Details

• Security: Common Stock
• Shares Proposed for Sale: 6,000
• Estimated Value: $442,020.00
• Issuer Shares Outstanding: 540,816,000
• Transaction Size (% of Float/Outstanding): ~0.0011%
• Nature of Acquisition: Restricted stock granted by the issuer on January 31, 2022.
• Trading Plan: Executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on March 2, 2026.

Historical Selling Activity (Past 3 Months)

The filing reflects an extensive, systematic liquidation pattern under the Rule 10b5-1 trading plan. Throughout July, August, and September 2026, the reporting person has consistently sold tranches of 6,000 shares per trading day, alongside several larger lump-sum block dispositions:

• Daily Tranches: Regular sales of 6,000 shares almost every trading session.
• Notable Block Sales:
  • July 2, 2026: 36,000 shares ($2,873,820.00)
  • July 15, 2026: 141,000 shares ($11,776,380.00)
  • August 5, 2026: 41,000 shares ($3,519,850.00)

Significance & Market Impact

• Market Impact: Minimal. The 6,000-share tranche represents a fraction of a percent of Block's 540+ million shares outstanding and is easily absorbed by average daily trading volume.
• Governance Context: Because the transactions are being executed under a Rule 10b5-1 plan established in March 2026, the timing and execution are automated and insulated from short-term insider knowledge.
• Overall Rating: Low trading significance given the pre-scheduled nature and programmatic execution structure.