Kenneth S Ehrman — SEC Insider Profile, Roles & Companies

Insider at

DUOT buying July 1, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 28 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

28 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 9, 2025	DUOT	A	10,000	·	·	91,768 Direct	+12.23%	Acquired	(price as of 2026-10-02)
April 1, 2025	DUOT	A	10,000	·	·	10,000 Direct	·	Acquired	(price as of 2026-10-02)
March 31, 2025	DUOT	A	1,872	$5.34	$9,996	71,768 Direct	+2.68%	Acquired	70.6% (price as of 2026-10-02)
Dec. 31, 2024	DUOT	A	2,112	$5.92	$12,503	69,896 Direct	+3.12%	Acquired	53.9% (price as of 2026-10-02)
Sept. 30, 2024	DUOT	A	4,245	$2.94	$12,480	67,784 Direct	+6.68%	Acquired	209.9% (price as of 2026-10-02)
June 28, 2024	DUOT	A	4,424	$2.83	$12,520	63,539 Direct	+7.48%	Acquired	221.9% (price as of 2026-10-02)
March 28, 2024	DUOT	A	1,731	$4.33	$7,495	59,115 Direct	+3.02%	Acquired	110.4% (price as of 2026-10-02)
Dec. 29, 2023	DUOT	A	2,446	$3.07	$7,509	57,384 Direct	+4.45%	Acquired	196.7% (price as of 2026-10-02)
Sept. 30, 2023	DUOT	A	2,437	$5.13	$12,502	54,938 Direct	+4.64%	Acquired	77.6% (price as of 2026-10-02)
June 30, 2023	DUOT	A	2,171	$5.76	$12,505	52,501 Direct	+4.31%	Acquired	58.2% (price as of 2026-10-02)
March 31, 2023	DUOT	A	4,794	$2.61	$12,512	50,330 Direct	+10.53%	Acquired	249.0% (price as of 2026-10-02)
Dec. 30, 2022	DUOT	A	5,445	$2.30	$12,524	45,536 Direct	+13.58%	Acquired	296.1% (price as of 2026-10-02)
Sept. 30, 2022	DUOT	A	3,049	$4.10	$12,501	40,091 Direct	+8.23%	Acquired	122.2% (price as of 2026-10-02)
July 1, 2022	DUOT	P	1	$3.75	$4	37,042 Direct	0.00%	Acquired	142.9% (price as of 2026-10-02)
June 30, 2022	DUOT	P	807	$3.75	$3,026	33,707 Direct	+2.45%	Acquired	142.9% (price as of 2026-10-02)
June 30, 2022	DUOT	A	3,334	$3.75	$12,502	37,041 Direct	+9.89%	Acquired	142.9% (price as of 2026-10-02)
June 29, 2022	DUOT	P	2,796	$3.74	$10,457	32,900 Direct	+9.29%	Acquired	143.6% (price as of 2026-10-02)
June 28, 2022	DUOT	P	10,000	$3.71	$37,100	30,104 Direct	+49.74%	Acquired	145.6% (price as of 2026-10-02)
June 16, 2022	DUOT	P	898	$3.75	$3,368	20,104 Direct	+4.68%	Acquired	142.9% (price as of 2026-10-02)
April 1, 2022	DUOT	A	2,249	$5.56	$12,504	19,206 Direct	+13.26%	Acquired	63.8% (price as of 2026-10-02)
Dec. 31, 2021	DUOT	A	2,390	$5.23	$12,500	16,957 Direct	+16.41%	Acquired	74.2% (price as of 2026-10-02)
Nov. 5, 2021	DUOT	A	972	$5.15	$5,006	14,567 Direct	+7.15%	Acquired	76.9% (price as of 2026-10-02)
Sept. 30, 2021	DUOT	A	1,204	$6.23	$7,501	13,595 Direct	+9.72%	Acquired	46.2% (price as of 2026-10-02)
Aug. 5, 2021	DUOT	A	1,008	$7.45	$7,510	12,391 Direct	+8.86%	Acquired	22.3% (price as of 2026-10-02)
Oct. 7, 2020	DUOT	A	658	$3.80	$2,500	11,383 Direct	+6.14%	Acquired	139.7% (price as of 2026-10-02)
Aug. 20, 2020	DUOT	A	1,965	$5.00	$9,825	10,725 Direct	+22.43%	Acquired	82.2% (price as of 2026-10-02)
July 8, 2020	DUOT	A	544	$4.60	$2,502	8,760 Direct	+6.62%	Acquired	98.0% (price as of 2026-10-02)
April 1, 2020	DUOT	A	537	$4.66	$2,502	8,216 Direct	+6.99%	Acquired	95.5% (price as of 2026-10-02)
April 1, 2020	DUOT	D	8,572	·	·	0 Direct	-100.00%	Disposed	(price as of 2026-10-02)
April 1, 2020	DUOT	A	8,572	·	·	8,572 Direct	·	Acquired	(price as of 2026-10-02)
April 1, 2020	DUOT	A	8,572	·	·	17,144 Direct	+100.00%	Acquired	(price as of 2026-10-02)
Sept. 30, 2019	DUOT	A	4,987	$0.50	$2,494	102,128 Direct	+5.13%	Acquired	1722.0% (price as of 2026-10-02)
Aug. 28, 2019	DUOT	A	6,341	$0.66	$4,185	97,141 Direct	+6.98%	Acquired	1280.3% (price as of 2026-10-02)
July 10, 2019	DUOT	P	15,000	$0.70	$10,500	41,800 Direct	+55.97%	Acquired	1201.4% (price as of 2026-10-02)
July 10, 2019	DUOT	P	15,000	$0.71	$10,650	56,800 Direct	+35.89%	Acquired	1183.1% (price as of 2026-10-02)
July 10, 2019	DUOT	P	18,000	$0.72	$12,960	74,800 Direct	+31.69%	Acquired	1165.3% (price as of 2026-10-02)
July 10, 2019	DUOT	P	16,000	$0.71	$11,360	90,800 Direct	+21.39%	Acquired	1183.1% (price as of 2026-10-02)
June 27, 2019	DUOT	P	10,000	$0.80	$8,000	16,800 Direct	+147.06%	Acquired	1038.7% (price as of 2026-10-02)
June 27, 2019	DUOT	P	9,000	$0.80	$7,200	25,800 Direct	+53.57%	Acquired	1038.7% (price as of 2026-10-02)
June 27, 2019	DUOT	P	1,000	$0.79	$790	26,800 Direct	+3.88%	Acquired	1053.2% (price as of 2026-10-02)
June 26, 2019	DUOT	P	6,800	$0.76	$5,168	6,800 Direct	·	Acquired	1098.7% (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
April 1, 2020	DUOT	Options to purchase Common Stock	Common Stock (8,572)	$14.00	·	8,572	Disposed
April 1, 2020	DUOT	Options to purchase Common Stock	Common Stock (8,572)	$6.00	April 1, 2025	8,572	Acquired
April 1, 2020	DUOT	Options to purchase Common Stock	Common Stock (8,572)	$4.74	April 1, 2025	8,572	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Feb. 6, 2019	DUOT	Options to purchase Common Stock→ Common Stock (60,000)	60,000	Direct
Feb. 6, 2019	DUOT	Options to purchase Common Stock→ Common Stock (60,000)	60,000	Direct