Barbra Keck

Insider

First SEC filing: May 8, 2020 · Latest: May 8, 2020

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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

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 23 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

23 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Sept. 3, 2025	SMTK	A	71,077	—	—	71,077 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 31, 2024	SMTK	A	100	—	—	100 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 20, 2022	SMTK	A	450,000	—	—	450,000 Direct	—	Acquired	(price as of 2026-08-20)
July 8, 2022	SMTK	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
March 31, 2021	SMTK	A	18,000	—	—	18,000 Direct	—	Acquired	(price as of 2026-08-20)
March 31, 2021	SMTK	A	18,000	—	—	18,000 Direct	—	Acquired	(price as of 2026-08-20)
May 8, 2020	DCTH	C	68	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 8, 2020	DCTH	C	6,800	—	—	12,851 Direct	+112.38%	Acquired	(price as of 2026-08-20)
May 6, 2020	DCTH	A	6,040	—	—	6,051 Direct	+54909.09%	Acquired	(price as of 2026-08-20)
July 15, 2019	DCTH	P	1,113,333	—	—	1,113,333 Direct	—	Acquired	(price as of 2026-08-20)
July 15, 2019	DCTH	P	68	$1000.00	$68,000	68 Direct	—	Acquired	-100.0% (price as of 2026-08-20)
Feb. 1, 2019	DCTH	A	250,000	—	—	250,000 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 28, 2018	DCTH	P	7,399	$1.75	$12,948	7,500 Direct	+7325.74%	Acquired	-98.6% (price as of 2026-08-20)
Aug. 1, 2018	DCTH	P	100	$2.39	$239	101 Direct	+10000.00%	Acquired	-99.0% (price as of 2026-08-20)
June 27, 2017	DCTH	F	168	$0.22	$37	23,887 Direct	-0.70%	Disposed	-89.0% (price as of 2026-08-20)
Feb. 8, 2017	DCTH	A	20,000	—	—	24,055 Direct	+493.22%	Acquired	(price as of 2026-08-20)
June 16, 2016	DCTH	F	8,561	$0.25	$2,140	64,926 Direct	-11.65%	Disposed	-90.3% (price as of 2026-08-20)
June 10, 2015	DCTH	A	34,625	—	—	34,625 Direct	—	Acquired	(price as of 2026-08-20)
June 10, 2015	DCTH	A	73,125	—	—	86,475 Direct	+547.75%	Acquired	(price as of 2026-08-20)
Nov. 14, 2013	DCTH	A	99,476	—	—	99,476 Direct	—	Acquired	(price as of 2026-08-20)
March 11, 2013	DCTH	A	14,000	—	—	14,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2012	DCTH	A	2,800	—	—	5,800 Direct	+93.33%	Acquired	(price as of 2026-08-20)
Feb. 28, 2012	DCTH	A	14,000	—	—	14,000 Direct	—	Acquired	(price as of 2026-08-20)
March 10, 2011	DCTH	A	2,000	—	—	3,000 Direct	+200.00%	Acquired	(price as of 2026-08-20)
March 10, 2011	DCTH	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 12, 2009	DCTH	A	75,000	—	—	75,000 Direct	—	Acquired	(price as of 2026-08-20)
June 9, 2009	DCTH	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-20)
May 12, 2009	DCTH	P	1,000	$3.24	$3,240	1,000 Direct	—	Acquired	-99.3% (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
Sept. 3, 2025	SMTK	Stock Option (right to buy)	Common Stock (71,077)	$1.16	Sept. 3, 2035	71,077	Acquired
Dec. 20, 2022	SMTK	Stock option (right to buy)	Common Stock (450,000)	$2.00	Dec. 20, 2032	450,000	Acquired
July 8, 2022	SMTK	Stock option (right to buy)	Common Stock (6,000)	$2.00	July 8, 2032	6,000	Acquired
March 31, 2021	SMTK	Stock option (right to buy)	Common Stock (18,000)	$2.00	March 31, 2031	18,000	Acquired
March 31, 2021	SMTK	Stock option (right to buy)	Common Stock (18,000)	$2.00	March 31, 2031	18,000	Acquired
May 8, 2020	DCTH	Series E Convertible Preferred Stock	Common Stock	—	—	68	Disposed
July 15, 2019	DCTH	Common Stock Warrant (Right to Buy)	Common Stock (1,113,333)	—	—	1,113,333	Acquired
July 15, 2019	DCTH	Series E Convertible Preferred Stock	Common Stock	—	—	68	Acquired
Feb. 1, 2019	DCTH	Stock Options	Common Stock (250,000)	$0.28	Feb. 1, 2029	250,000	Acquired
June 10, 2015	DCTH	Stock Option (Right to Buy)	Common Stock (34,625)	$1.19	June 10, 2025	34,625	Acquired
Nov. 14, 2013	DCTH	Stock Option (right to buy)	Common Stock (99,476)	$0.30	Nov. 14, 2023	99,476	Acquired
March 11, 2013	DCTH	Stock Option (right to buy)	Common Stock (14,000)	$2.13	March 11, 2023	14,000	Acquired
Feb. 28, 2012	DCTH	Stock Option (right to buy)	Common Stock (14,000)	$4.60	Feb. 28, 2022	14,000	Acquired
March 10, 2011	DCTH	Stock Option (right to buy)	Common Stock (10,000)	$6.42	March 10, 2021	10,000	Acquired
Oct. 12, 2009	DCTH	Stock Option (right to buy)	Common Stock (75,000)	$5.46	Oct. 12, 2019	75,000	Acquired
June 9, 2009	DCTH	Stock Option (right to buy)	Common Stock (10,000)	$3.66	June 9, 2014	10,000	Acquired

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.

DCTH

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2019	$324,000	$311,449	—	—	—	—	—	$700,239
2018	$324,000	$50,000	—	—	—	—	—	$374,000
2016	$247,200	$58,834	—	—	—	—	—	$306,034

SMTK

CFO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$329,169	$82,500	$600	$336,000	—	—	$19,600	$767,869
2023	$314,773	$37,500	—	—	—	—	$19,800	$372,073

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