DAVID L. KLENK - 01 Sep 2025 Form 4 Insider Report for ELECTRO SENSORS INC (ELSE)

Role
CEO
Signature
/s/ David Klenk
Issuer symbol
ELSE
Transactions as of
01 Sep 2025
Net transactions value
+$170,500
Form type
4
Filing time
18 Feb 2026, 12:28:37 UTC
Previous filing
22 Sep 2023
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
KLENK DAVID L CEO 6111 BLUE CIRCLE DRIVE, MINNETONKA /s/ David Klenk 18 Feb 2026 0001194773

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ELSE Common Stock Options Exercise $170,500 +50,000 $3.41 50,000 06 Feb 2026 Direct
transaction ELSE Common Stock Options Exercise +14,000 +28% 64,000 01 Sep 2025 Direct F1
holding ELSE Common Stock 3,373 01 Sep 2025 Employee Stock Ownership Plan F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ELSE Stock Option (Right-to-Buy) Options Exercise $0 -50,000 -67% $0.000000 25,000 04 Feb 2026 Common Stock 50,000 $3.41 Direct F3
transaction ELSE Restricted Stock Units Options Exercise $0 -14,000 -40% $0.000000 21,000 01 Sep 2025 Common Stock 14,000 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Restricted stock units convert into common stock on a one-for-one basis.
F2 3,373 shares are held by the Electro-Sensors, Inc. Employee Stock Ownership Plan for the account of Mr. Klenk.
F3 On February 9, 2016, the reporting person was granted an option exercisable for 50,000 shares, which vested in five equal annual installments beginning on the date of grant. The option was fully vested on February 9, 2020.
F4 On September 1, 2023, the reporting person was granted 35,000 restricted stock units, which will vest in five equal annual installments beginning on September 1, 2024. To date, a total of 14,000 restricted stock units have vested.