Donald F Mowbray

Insider

First SEC filing: Sept. 12, 2003 · Latest: Sept. 12, 2003

On this page

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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

SOTK buying Sept. 11, 2012

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 21 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

21 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 26, 2024	SOTK	M	10,000	$3.70	$37,000	69,190 Direct	+16.89%	Acquired	44.6% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	F	6,503	$5.69	$37,002	62,687 Direct	-9.40%	Disposed	-6.0% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	M	4,841	$3.19	$15,443	67,528 Direct	+7.72%	Acquired	67.7% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	F	2,714	$5.69	$15,443	64,814 Direct	-4.02%	Disposed	-6.0% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	M	1,485	$5.50	$8,168	66,299 Direct	+2.29%	Acquired	-2.7% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	F	1,435	$5.69	$8,165	64,864 Direct	-2.16%	Disposed	-6.0% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	M	10,000	$3.70	$37,000	13,026 Direct	-43.43%	Disposed	44.6% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	M	4,841	$3.19	$15,443	8,185 Direct	-37.16%	Disposed	67.7% (price as of 2026-08-21)
Feb. 26, 2024	SOTK	M	1,485	$5.50	$8,168	6,700 Direct	-18.14%	Disposed	-2.7% (price as of 2026-08-21)
Aug. 24, 2023	SOTK	A	3,676	$4.79	$17,608	23,026 Direct	+19.00%	Acquired	11.7% (price as of 2026-08-21)
Aug. 18, 2022	SOTK	A	3,300	$5.50	$18,150	19,350 Direct	+20.56%	Acquired	-2.7% (price as of 2026-08-21)
Aug. 19, 2021	SOTK	A	6,050	$3.19	$19,300	16,050 Direct	+60.50%	Acquired	67.7% (price as of 2026-08-21)
Aug. 20, 2020	SOTK	A	10,000	$3.70	$37,000	10,000 Direct	—	Acquired	44.6% (price as of 2026-08-21)
April 12, 2019	SOTK	M	20,000	$0.61	$12,200	65,000 Direct	+44.44%	Acquired	777.0% (price as of 2026-08-21)
April 12, 2019	SOTK	F	5,810	$2.10	$12,201	59,190 Direct	-8.94%	Disposed	154.8% (price as of 2026-08-21)
April 12, 2019	SOTK	M	20,000	$0.61	$12,200	0 Direct	-100.00%	Disposed	777.0% (price as of 2026-08-21)
Nov. 8, 2012	SOTK	J	10,000	$1.06	$10,600	10,000 Direct	-50.00%	Disposed	404.7% (price as of 2026-08-21)
Nov. 8, 2012	SOTK	J	10,000	$0.74	$7,400	0 Direct	-100.00%	Disposed	623.0% (price as of 2026-08-21)
Nov. 8, 2012	SOTK	A	20,000	$0.61	$12,200	20,000 Direct	—	Acquired	777.0% (price as of 2026-08-21)
Sept. 11, 2012	SOTK	P	20,000	$0.25	$5,000	45,000 Direct	+80.00%	Acquired	2040.0% (price as of 2026-08-21)
March 5, 2008	SOTK	A	5,000	$0.74	$3,700	5,000 Direct	—	Acquired	623.0% (price as of 2026-08-21)
March 5, 2008	SOTK	A	5,000	$0.74	$3,700	10,000 Direct	+100.00%	Acquired	623.0% (price as of 2026-08-21)

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
Feb. 26, 2024	SOTK	Sono-Tek Options	Sono-Tek Corp Common Stock (10,000)	$3.70	Aug. 20, 2031	10,000	Disposed
Feb. 26, 2024	SOTK	Sono-Tek Options	Sono-Tek Corp Common Stock (4,841)	$3.19	Aug. 19, 2031	4,841	Disposed
Feb. 26, 2024	SOTK	Sono-Tek Options	Sono-Tek Corp Common Stock (1,485)	$5.50	Aug. 18, 2032	1,485	Disposed
Aug. 24, 2023	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (3,676)	$4.79	Aug. 24, 2033	3,676	Acquired
Aug. 18, 2022	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (3,300)	$5.50	Aug. 18, 2032	3,300	Acquired
Aug. 19, 2021	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (6,050)	$3.19	Aug. 19, 2031	6,050	Acquired
Aug. 20, 2020	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (10,000)	$3.70	Aug. 20, 2030	10,000	Acquired
April 12, 2019	SOTK	Sono-Tek Corp Options	Sono-Tek Corp Common Stock (20,000)	$0.61	Nov. 6, 2022	20,000	Disposed
Nov. 8, 2012	SOTK	OPTIONS	SONOTEK COMMON STOCK (10,000)	$1.06	Aug. 16, 2015	10,000	Disposed
Nov. 8, 2012	SOTK	OPTIONS	SONOTEK COMMON STOCK (10,000)	$0.74	March 3, 2018	10,000	Disposed
Nov. 8, 2012	SOTK	OPTIONS	SONOTEK COMMON STOCK (20,000)	$0.61	Nov. 6, 2022	20,000	Acquired
March 5, 2008	SOTK	Options	SonoTek Corp Common Stock (5,000)	$0.74	March 5, 2018	5,000	Acquired
March 5, 2008	SOTK	Options	SonoTek Corp Common Stock (5,000)	$0.74	March 5, 2018	5,000	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Sept. 12, 2003	SOTK	options - right to acquire→ Sono-tek common stock (20,000)	20,000	Direct