KLENK DAVID L

CEO at ELECTRO SENSORS INC · on record since Feb 10, 2016
COO & President at AUGUST TECHNOLOGY CORP · on record since Sep 30, 2003
Director at ELECTRO SENSORS INC · on record since Jun 19, 2013

Insider trading activity of KLENK DAVID L

Transactions on record: 140; since Sep 30, 2003

Open-market buys: 0

Open-market sells: 114; $1.5M

Companies traded: 2; last filing Feb 18, 2026

Figures computed from official regulatory filings — .

Companies where KLENK DAVID L has traded

ELECTRO SENSORS INC8 tx · $170.5K · Feb 18, 2026
AUGUST TECHNOLOGY CORP132 tx · $1.5M · Mar 9, 2005

Track record of KLENK DAVID L

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of KLENK DAVID L

Co-insiders of KLENK DAVID L

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	Exercise	50,000	3.41 USD	$170.5K	Unusual size	SEC
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	Exercise	14,000	—	n/a (No price was disclosed in the filing)		SEC
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	ExerciseD (derivative)	-50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	ExerciseD (derivative)	-14,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Sep 22, 2023	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Sep 22, 2023	AwardD (derivative)	35,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Feb 10, 2016	AwardD (derivative)	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Jul 24, 2013	AwardD (derivative)	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 9, 2005	AwardD (derivative)	5,168	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Nov 15, 2004	Exercise	2,250	0.50 USD	$1.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Nov 15, 2004	ExerciseD (derivative)	-2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Oct 26, 2004	AwardD (derivative)	1,791	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-1,400	15.09 USD	$21.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Exercise	13,500	0.50 USD	$6.8K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-5,900	15.00 USD	$88.5K	Unusual size	SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-1,300	15.03 USD	$19.5K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-1,600	15.05 USD	$24.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-2,800	15.04 USD	$42.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	ExerciseD (derivative)	-13,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-200	15.10 USD	$3K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-300	15.01 USD	$4.5K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Sell	-100	17.08 USD	$1.7K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Sell	-100	17.23 USD	$1.7K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Exercise	15,000	0.50 USD	$7.5K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Sell	-700	16.84 USD	$11.8K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	Exercise	50,000	3.41 USD	$170.5K	Unusual size	SEC
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	Exercise	14,000	—	n/a (No price was disclosed in the filing)		SEC
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	ExerciseD (derivative)	-50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Feb 18, 2026	ExerciseD (derivative)	-14,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Sep 22, 2023	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Sep 22, 2023	AwardD (derivative)	35,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Feb 10, 2016	AwardD (derivative)	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ELECTRO SENSORS INCSecurity delisted	Jul 24, 2013	AwardD (derivative)	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 9, 2005	AwardD (derivative)	5,168	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Nov 15, 2004	Exercise	2,250	0.50 USD	$1.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Nov 15, 2004	ExerciseD (derivative)	-2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Oct 26, 2004	AwardD (derivative)	1,791	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-1,400	15.09 USD	$21.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Exercise	13,500	0.50 USD	$6.8K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-5,900	15.00 USD	$88.5K	Unusual size	SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-1,300	15.03 USD	$19.5K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-1,600	15.05 USD	$24.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-2,800	15.04 USD	$42.1K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	ExerciseD (derivative)	-13,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-200	15.10 USD	$3K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Apr 2, 2004	Sell	-300	15.01 USD	$4.5K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Sell	-100	17.08 USD	$1.7K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Sell	-100	17.23 USD	$1.7K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Exercise	15,000	0.50 USD	$7.5K		SEC
AUGUST TECHNOLOGY CORPListing unverified	Mar 3, 2004	Sell	-700	16.84 USD	$11.8K		SEC