X0306 4 2019-05-15 0 0000351789 ELECTRO SENSORS INC ELSE 0001554829 Zipoy Michael C. 10900 WAYZATA BOULEVARD SUITE 200 MINNETONKA MN 55305 1 0 0 0 Common Stock 2019-05-15 4 P 0 400 3.5567 A 5400 I By Trust Common Stock 2019-05-15 4 P 0 200 3.53 A 5600 I By Trust Common Stock 2019-05-15 4 P 0 200 3.54 A 5800 I By Trust Common Stock 2019-05-15 4 P 0 525 3.55 A 6325 I By Trust Common Stock 2019-05-15 4 P 0 310 3.56 A 6635 I By Trust Common Stock 2019-05-15 4 P 0 465 3.57 A 7100 I By Trust Common Stock 2019-05-15 4 P 0 95 3.58 A 7195 I By Trust Common Stock 2019-05-15 4 P 0 200 3.5 A 7395 I By Trust Common Stock 2019-05-15 4 P 0 889 3.59 A 8284 I By Trust Common Stock 2019-05-15 4 P 0 1716 3.6 A 10000 I By Trust Shares are held by the Barbara J. Zipoy Revocable Trust dated 11/19/13 of which reporting person is a Trustee. Suzette McNally, Attorney-in-Fact for Michael C. Zipoy 2019-05-16