SCHEDULE 13G/A

Electro-Sensors, Inc.

Common Stock, $0.10 par value per share · CUSIP: 285233102

Event date: 2024-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• CALDWELL SUTTER CAPITAL, INC.

  Shares: 232,097.00 · Class: 6.8%

• Joseph F. Helmer

  Shares: 249,025.00 · Class: 7.3%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.