Stephen R Harshbarger

Insider

First SEC filing: Jan. 28, 2025 · Latest: Jan. 28, 2025

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Compensation Executive pay disclosed in company proxy statements.

Insider at

SOTK buying April 19, 2013

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 70 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

70 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Jan. 24, 2025	SOTK	G	8,500	—	—	265,278 Direct	-3.10%	Disposed	(price as of 2026-08-20)
Nov. 7, 2024	SOTK	G	8,000	—	—	273,778 Direct	-2.84%	Disposed	(price as of 2026-08-20)
Aug. 22, 2024	SOTK	A	23,166	$4.12	$95,444	53,916 Direct	+75.34%	Acquired	27.9% (price as of 2026-08-20)
Nov. 16, 2023	SOTK	A	4,658	$5.00	$23,290	30,750 Direct	+17.85%	Acquired	5.4% (price as of 2026-08-20)
Nov. 17, 2022	SOTK	A	3,937	$5.96	$23,465	26,092 Direct	+17.77%	Acquired	-11.6% (price as of 2026-08-20)
Feb. 17, 2022	SOTK	A	16,340	$6.26	$102,288	22,155 Direct	+281.00%	Acquired	-15.8% (price as of 2026-08-20)
Jan. 13, 2022	SOTK	G	3,200	—	—	281,778 Direct	-1.12%	Disposed	(price as of 2026-08-20)
Nov. 18, 2021	SOTK	A	5,815	$6.05	$35,181	5,815 Direct	—	Acquired	-12.9% (price as of 2026-08-20)
March 18, 2021	SOTK	G	3,000	—	—	284,978 Direct	-1.04%	Disposed	(price as of 2026-08-20)
March 17, 2021	SOTK	G	6,000	—	—	287,978 Direct	-2.04%	Disposed	(price as of 2026-08-20)
March 16, 2021	SOTK	M	36,666	$1.06	$38,866	308,247 Direct	+13.50%	Acquired	397.2% (price as of 2026-08-20)
March 16, 2021	SOTK	F	8,269	$4.70	$38,864	299,978 Direct	-2.68%	Disposed	12.1% (price as of 2026-08-20)
March 16, 2021	SOTK	G	6,000	—	—	293,978 Direct	-2.00%	Disposed	(price as of 2026-08-20)
March 16, 2021	SOTK	M	36,666	$1.06	$38,866	0 Direct	-100.00%	Disposed	397.2% (price as of 2026-08-20)
April 1, 2020	SOTK	M	34,000	$0.91	$30,940	261,356 Direct	+14.95%	Acquired	479.1% (price as of 2026-08-20)
April 1, 2020	SOTK	F	11,720	$2.64	$30,941	249,636 Direct	-4.48%	Disposed	99.6% (price as of 2026-08-20)
April 1, 2020	SOTK	M	36,667	$1.06	$38,867	286,303 Direct	+14.69%	Acquired	397.2% (price as of 2026-08-20)
April 1, 2020	SOTK	M	34,000	$0.91	$30,940	0 Direct	-100.00%	Disposed	479.1% (price as of 2026-08-20)
April 1, 2020	SOTK	M	36,667	$1.06	$38,867	36,666 Direct	-50.00%	Disposed	397.2% (price as of 2026-08-20)
Jan. 1, 2020	SOTK	F	14,722	$2.64	$38,866	271,581 Direct	-5.14%	Disposed	99.6% (price as of 2026-08-20)
Nov. 14, 2019	SOTK	G	10,000	—	—	227,356 Direct	-4.21%	Disposed	(price as of 2026-08-20)
Nov. 12, 2019	SOTK	M	36,667	$1.06	$38,867	251,805 Direct	+17.04%	Acquired	397.2% (price as of 2026-08-20)
Nov. 12, 2019	SOTK	F	14,449	$2.69	$38,868	237,356 Direct	-5.74%	Disposed	95.9% (price as of 2026-08-20)
Nov. 12, 2019	SOTK	M	36,667	$1.06	$38,867	107,333 Direct	-25.46%	Disposed	397.2% (price as of 2026-08-20)
March 28, 2019	SOTK	M	67,000	$0.91	$60,970	239,526 Direct	+38.83%	Acquired	479.1% (price as of 2026-08-20)
March 28, 2019	SOTK	F	24,388	$2.50	$60,970	215,138 Direct	-10.18%	Disposed	110.8% (price as of 2026-08-20)
March 28, 2019	SOTK	M	67,000	$0.91	$60,970	144,000 Direct	-31.75%	Disposed	479.1% (price as of 2026-08-20)
Nov. 15, 2018	SOTK	M	43,200	$1.19	$51,408	189,662 Direct	+29.50%	Acquired	342.9% (price as of 2026-08-20)
Nov. 15, 2018	SOTK	F	17,136	$3.00	$51,408	172,526 Direct	-9.04%	Disposed	75.7% (price as of 2026-08-20)
Nov. 15, 2018	SOTK	M	43,200	$1.19	$51,408	211,000 Direct	-16.99%	Disposed	342.9% (price as of 2026-08-20)
July 12, 2018	SOTK	M	36,000	$1.05	$37,800	104,556 Direct	+52.51%	Acquired	401.9% (price as of 2026-08-20)
July 12, 2018	SOTK	F	16,875	$2.24	$37,800	87,681 Direct	-16.14%	Disposed	135.3% (price as of 2026-08-20)
July 12, 2018	SOTK	M	99,000	$0.91	$90,090	186,681 Direct	+112.91%	Acquired	479.1% (price as of 2026-08-20)
July 12, 2018	SOTK	F	40,219	$2.24	$90,091	146,462 Direct	-21.54%	Disposed	135.3% (price as of 2026-08-20)
July 12, 2018	SOTK	M	36,000	$1.05	$37,800	353,200 Direct	-9.25%	Disposed	401.9% (price as of 2026-08-20)
July 12, 2018	SOTK	M	99,000	$0.91	$90,090	254,200 Direct	-28.03%	Disposed	479.1% (price as of 2026-08-20)
May 18, 2017	SOTK	A	110,000	$1.06	$116,600	389,200 Direct	+39.40%	Acquired	397.2% (price as of 2026-08-20)
July 21, 2016	SOTK	A	100,000	$0.91	$91,000	179,200 Direct	+126.26%	Acquired	479.1% (price as of 2026-08-20)
July 21, 2016	SOTK	A	100,000	$0.91	$91,000	279,200 Direct	+55.80%	Acquired	479.1% (price as of 2026-08-20)
Feb. 23, 2016	SOTK	M	10,000	$0.61	$6,100	74,002 Direct	+15.62%	Acquired	763.9% (price as of 2026-08-20)
Feb. 23, 2016	SOTK	F	5,446	$1.12	$6,100	68,556 Direct	-7.36%	Disposed	370.5% (price as of 2026-08-20)
Feb. 23, 2016	SOTK	M	10,000	$0.61	$6,100	79,200 Direct	-11.21%	Disposed	763.9% (price as of 2026-08-20)
June 9, 2015	SOTK	M	20,834	$0.61	$12,709	74,169 Direct	+39.06%	Acquired	763.9% (price as of 2026-08-20)
June 9, 2015	SOTK	F	10,167	$1.25	$12,709	64,002 Direct	-13.71%	Disposed	321.6% (price as of 2026-08-20)
June 9, 2015	SOTK	M	20,834	$0.61	$12,709	89,200 Direct	-18.93%	Disposed	763.9% (price as of 2026-08-20)
Feb. 19, 2015	SOTK	A	43,200	$1.19	$51,408	110,034 Direct	+64.64%	Acquired	342.9% (price as of 2026-08-20)
Feb. 20, 2014	SOTK	A	36,000	$1.05	$37,800	66,834 Direct	+116.75%	Acquired	401.9% (price as of 2026-08-20)
Jan. 27, 2014	SOTK	M	12,500	$0.48	$6,000	58,790 Direct	+27.00%	Acquired	997.9% (price as of 2026-08-20)
Jan. 27, 2014	SOTK	F	5,455	$1.10	$6,000	53,335 Direct	-9.28%	Disposed	379.1% (price as of 2026-08-20)
Jan. 27, 2014	SOTK	M	12,500	$0.48	$6,000	30,834 Direct	-28.85%	Disposed	997.9% (price as of 2026-08-20)
Dec. 31, 2013	SOTK	M	29,166	$0.61	$17,791	56,666 Direct	+106.06%	Acquired	763.9% (price as of 2026-08-20)
Dec. 31, 2013	SOTK	M	12,500	$0.48	$6,000	69,166 Direct	+22.06%	Acquired	997.9% (price as of 2026-08-20)
Dec. 31, 2013	SOTK	F	22,876	$1.04	$23,791	46,290 Direct	-33.07%	Disposed	406.7% (price as of 2026-08-20)
Dec. 31, 2013	SOTK	M	29,166	$0.61	$17,791	55,834 Direct	-34.31%	Disposed	763.9% (price as of 2026-08-20)
Dec. 31, 2013	SOTK	M	12,500	$0.48	$6,000	43,334 Direct	-22.39%	Disposed	997.9% (price as of 2026-08-20)
April 19, 2013	SOTK	P	12,500	$0.51	$6,375	27,500 Direct	+83.33%	Acquired	933.3% (price as of 2026-08-20)
Jan. 24, 2013	SOTK	A	25,000	$0.48	$12,000	85,000 Direct	+41.67%	Acquired	997.9% (price as of 2026-08-20)
Nov. 9, 2012	SOTK	P	15,000	$0.62	$9,300	15,000 Direct	—	Acquired	750.0% (price as of 2026-08-20)
Nov. 8, 2012	SOTK	J	10,000	$0.95	$9,500	0 Direct	-100.00%	Disposed	454.7% (price as of 2026-08-20)
Nov. 8, 2012	SOTK	A	10,000	$0.61	$6,100	10,000 Direct	—	Acquired	763.9% (price as of 2026-08-20)
Nov. 8, 2012	SOTK	A	50,000	$0.61	$30,500	60,000 Direct	+500.00%	Acquired	763.9% (price as of 2026-08-20)
Jan. 18, 2008	SOTK	G	11,500	$0.75	$8,625	0 Direct	-100.00%	Disposed	602.7% (price as of 2026-08-20)
Feb. 7, 2007	SOTK	G	20,000	$1.03	$20,600	11,500 Direct	-63.49%	Disposed	411.7% (price as of 2026-08-20)
July 21, 2006	SOTK	G	16,000	$1.35	$21,600	31,500 Direct	-33.68%	Disposed	290.4% (price as of 2026-08-20)
Nov. 9, 2005	SOTK	S	5,000	$1.75	$8,750	47,500 Direct	-9.52%	Disposed	201.1% (price as of 2026-08-20)
Nov. 8, 2005	SOTK	S	10,000	$1.72	$17,200	52,500 Direct	-16.00%	Disposed	206.4% (price as of 2026-08-20)
Aug. 29, 2005	SOTK	S	5,000	$2.30	$11,500	62,500 Direct	-7.41%	Disposed	129.1% (price as of 2026-08-20)
Aug. 24, 2005	SOTK	S	10,000	$2.30	$23,000	67,500 Direct	-12.90%	Disposed	129.1% (price as of 2026-08-20)
May 19, 2004	SOTK	A	10,000	$0.95	$9,500	17,500 Direct	+133.33%	Acquired	454.7% (price as of 2026-08-20)
March 25, 2004	SOTK	M	77,500	$0.27	$20,925	77,500 Direct	—	Acquired	1851.9% (price as of 2026-08-20)
March 25, 2004	SOTK	M	7,500	$0.38	$2,850	7,500 Direct	-50.00%	Disposed	1286.8% (price as of 2026-08-20)
March 25, 2004	SOTK	M	35,000	$0.35	$12,250	7,500 Direct	-82.35%	Disposed	1405.7% (price as of 2026-08-20)
March 25, 2004	SOTK	M	15,000	$0.19	$2,850	7,500 Direct	-66.67%	Disposed	2673.7% (price as of 2026-08-20)
March 25, 2004	SOTK	M	20,000	$0.15	$3,000	7,500 Direct	-72.73%	Disposed	3413.3% (price as of 2026-08-20)
Jan. 7, 2004	SOTK	X	0	—	—	0 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 7, 2004	SOTK	X	32,500	$0.27	$8,775	32,500 Direct	—	Acquired	1851.9% (price as of 2026-08-20)

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
Aug. 22, 2024	SOTK	Sono-Tek Options	Sono-Tek Corp Common Stock (23,166)	$4.12	Aug. 22, 2034	23,166	Acquired
Nov. 16, 2023	SOTK	Sono-Tek Options	Sono-Tek Common Stock (4,658)	$5.00	Nov. 16, 2033	4,658	Acquired
Nov. 17, 2022	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (3,937)	$5.96	Nov. 17, 2032	3,937	Acquired
Feb. 17, 2022	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (16,340)	$6.26	Feb. 17, 2032	16,340	Acquired
Nov. 18, 2021	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (5,815)	$6.05	Nov. 18, 2031	5,815	Acquired
March 16, 2021	SOTK	Sono Tek Corp Options	Sono Tek Corp Common Stock (36,666)	$1.06	May 18, 2027	36,666	Disposed
April 1, 2020	SOTK	Sonotek Corp Options	SonoTek Corp Common Stock (34,000)	$0.91	July 20, 2026	34,000	Disposed
April 1, 2020	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (36,667)	$1.06	May 18, 2027	36,667	Disposed
Nov. 12, 2019	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (36,667)	$1.06	May 18, 2027	36,667	Disposed
March 28, 2019	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (67,000)	$0.91	July 20, 2026	67,000	Disposed
Nov. 15, 2018	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (43,200)	$1.19	Feb. 19, 2025	43,200	Disposed
July 12, 2018	SOTK	Sono-Tek Options	Sono-Tek Common Stock (36,000)	$1.05	Feb. 20, 2024	36,000	Disposed
July 12, 2018	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (99,000)	$0.91	July 20, 2026	99,000	Disposed
May 18, 2017	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (110,000)	$1.06	May 18, 2027	110,000	Acquired
July 21, 2016	SOTK	Sono-Tek Corp Options	Sono-Tek Common Stock (100,000)	$0.91	July 20, 2026	100,000	Acquired
July 21, 2016	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (100,000)	$0.91	July 20, 2026	100,000	Acquired
Feb. 23, 2016	SOTK	Sono Tek Corp Options	SonoTek Corp Common Stock (10,000)	$0.61	Nov. 8, 2022	10,000	Disposed
June 9, 2015	SOTK	Sono-Tek Corp Options	SonoTek Corp Common Stock (20,834)	$0.61	Nov. 8, 2022	20,834	Disposed
Feb. 19, 2015	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (43,200)	$1.19	Feb. 19, 2025	43,200	Acquired
Feb. 20, 2014	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (36,000)	$1.05	Feb. 20, 2024	36,000	Acquired
Jan. 27, 2014	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (12,500)	$0.48	Jan. 24, 2023	12,500	Disposed
Dec. 31, 2013	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (29,166)	$0.61	Nov. 8, 2022	29,166	Disposed
Dec. 31, 2013	SOTK	SonoTek Corp Options	SonoTek Corp Common Stock (12,500)	$0.48	Jan. 24, 2023	12,500	Disposed
Jan. 24, 2013	SOTK	SonoTek Options	SonoTek Corp Common Stock (25,000)	$0.48	Jan. 24, 2023	25,000	Acquired
Nov. 8, 2012	SOTK	Options	SonoTek Common Stock (10,000)	$0.95	May 17, 2014	10,000	Disposed
Nov. 8, 2012	SOTK	Options	SonoTek Common Stock (10,000)	$0.61	Nov. 6, 2022	10,000	Acquired
Nov. 8, 2012	SOTK	Options	SonoTek Common Stock (50,000)	$0.61	Nov. 6, 2012	50,000	Acquired
May 19, 2004	SOTK	Options	Sono-Tek Corp. common stock (10,000)	$0.95	May 19, 2014	10,000	Acquired
March 25, 2004	SOTK	Options(right to buy)	common stock (7,500)	$0.38	Jan. 17, 2005	7,500	Disposed
March 25, 2004	SOTK	Options (right to buy)	common stock (35,000)	$0.35	June 8, 2009	35,000	Disposed
March 25, 2004	SOTK	Options (right to buy)	common stock (15,000)	$0.19	Dec. 20, 2011	15,000	Disposed
March 25, 2004	SOTK	zoption (right to buy)	common stock (20,000)	$0.15	Feb. 14, 2012	20,000	Disposed

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

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

SOTK

President and Director

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2026	—	—	—	—	—	—	—	—
2025	—	—	—	—	—	—	—	—
2024	$252,300	$55,000	$0	$15,000	—	—	$9,200	$331,500

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.