Vincent Demaio

Insider

First SEC filing: March 7, 2008 · Latest: March 7, 2008

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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.

Insider at

SOTK

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 17 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 5, 2008	SOTK	A	2,250	$0.74	$1,665	14,750 Direct	+18.00%	Acquired	612.2% (price as of 2026-08-20)
March 5, 2008	SOTK	A	1,750	$0.74	$1,295	16,500 Direct	+11.86%	Acquired	612.2% (price as of 2026-08-20)
March 5, 2008	SOTK	A	1,000	$0.74	$740	17,500 Direct	+6.06%	Acquired	612.2% (price as of 2026-08-20)
July 27, 2005	SOTK	M	12,500	$0.95	$11,875	75,303 Direct	+19.90%	Acquired	454.7% (price as of 2026-08-20)
July 27, 2005	SOTK	M	12,500	$0.95	$11,875	12,500 Direct	-50.00%	Disposed	454.7% (price as of 2026-08-20)
Oct. 27, 2004	SOTK	M	7,197	$1.60	$11,515	43,611 Direct	-14.17%	Disposed	229.4% (price as of 2026-08-20)
Oct. 27, 2004	SOTK	M	19,192	$0.60	$11,515	62,803 Direct	+44.01%	Acquired	778.3% (price as of 2026-08-20)
Oct. 27, 2004	SOTK	M	19,192	$0.60	$11,515	25,000 Direct	-43.43%	Disposed	778.3% (price as of 2026-08-20)
Oct. 13, 2004	SOTK	M	6,159	$1.54	$9,485	0 Indirect	-100.00%	Disposed	242.2% (price as of 2026-08-20)
Oct. 13, 2004	SOTK	M	20,000	$0.15	$3,000	40,000 Direct	+100.00%	Acquired	3413.3% (price as of 2026-08-20)
Oct. 13, 2004	SOTK	M	10,808	$0.60	$6,485	50,808 Direct	+27.02%	Acquired	778.3% (price as of 2026-08-20)
Oct. 13, 2004	SOTK	M	20,000	$0.15	$3,000	25,000 Direct	-44.44%	Disposed	3413.3% (price as of 2026-08-20)
Oct. 13, 2004	SOTK	M	10,808	$0.60	$6,485	44,192 Direct	-19.65%	Disposed	778.3% (price as of 2026-08-20)
May 19, 2004	SOTK	A	25,000	$0.95	$23,750	75,000 Direct	+50.00%	Acquired	454.7% (price as of 2026-08-20)
May 10, 2004	SOTK	M	6,909	$1.10	$7,600	6,159 Indirect	-52.87%	Disposed	379.1% (price as of 2026-08-20)
May 10, 2004	SOTK	M	20,000	$0.38	$7,600	20,000 Direct	—	Acquired	1286.8% (price as of 2026-08-20)
May 10, 2004	SOTK	M	20,000	$0.38	$7,600	0 Direct	-100.00%	Disposed	1286.8% (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
March 5, 2008	SOTK	Options	SonoTek Corp Common Stock (2,250)	$0.74	March 5, 2018	2,250	Acquired
March 5, 2008	SOTK	Options	SonoTek Corp Common Stock (1,750)	$0.74	March 5, 2018	1,750	Acquired
March 5, 2008	SOTK	Options	SonoTek Corp Common Stock (1,000)	$0.74	March 5, 2018	1,000	Acquired
July 27, 2005	SOTK	Options	Sono-Tek Corporation Common Stock (12,500)	$0.95	May 19, 2014	12,500	Disposed
Oct. 27, 2004	SOTK	Options	Sono-Tek Common stock (19,192)	$0.60	June 26, 2008	19,192	Disposed
Oct. 13, 2004	SOTK	Options	Sono-Tek Corp. common stock (20,000)	$0.15	Nov. 14, 2012	20,000	Disposed
Oct. 13, 2004	SOTK	Options	Sono-Tek Corp. common stock (10,808)	$0.60	June 26, 2008	10,808	Disposed
May 19, 2004	SOTK	Options	Sono-Tek Corp. common stock (25,000)	$0.95	May 19, 2014	25,000	Acquired
May 10, 2004	SOTK	Options (right to buy)	Sono-Tek Corp. common stock (20,000)	$0.38	Jan. 17, 2005	20,000	Disposed

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