Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2026

Share-Based Compensation

Schedule of outstanding and exercisable options


		2026
													Weighted
		Number											average
		of shares											exercise
		2019 Plan			Inducement Plan			2011 Plan			Total		price
Outstanding at beginning of period - 2011 Plan			—			—			1,294,691		1,294,691		$	2.23
Outstanding at beginning of period - 2019 Plan			8,591,306			—			—		8,591,306			4.21
Outstanding at beginning of period - Inducement Plan			—			710,000			—		710,000			4.76
Granted - 2019 Plan			2,807,000			—			—		2,807,000			1.79
Granted - Inducement Plan			—			542,000			—		542,000			1.81
Exercised - 2011 Plan			—			—			(24,921)		(24,921)			1.12
Outstanding at end of period			11,398,306			1,252,000			1,269,770		13,920,076		$	3.48
Outstanding at end of period - Weighted average exercise price		$	3.61		$	3.48		$	2.25
Exercisable at end of period			6,978,257			493,206			1,269,770		8,741,233		$	4.40
Exercisable at end of period - Weighted average exercise price		$	4.69		$	5.90		$	2.25


		2025
													Weighted
		Number											average
		of shares											exercise
		2019 Plan			Inducement Plan			2011 Plan			Total		price
Outstanding at beginning of period - 2011 Plan			—			—			1,632,485		1,632,485		$	2.11
Outstanding at beginning of period - 2019 Plan			7,604,606			—			—		7,604,606			4.97
Outstanding at beginning of period - Inducement Plan			—			496,000			—		496,000			5.99
Granted - 2019 Plan			1,511,400			—			—		1,511,400			1.96
Granted - Inducement Plan			—			244,000			—		244,000			2.01
Exercised - 2011 Plan			—			—			(29,988)		(29,988)			1.12
Forfeited - Inducement Plan			—			(74,917)			—		(74,917)			2.32
Forfeited - 2019 Plan			(101,516)			—			—		(101,516)			2.19
Outstanding at end of period			9,014,490			665,083			1,602,497		11,282,070		$	4.18
Outstanding at end of period - Weighted average exercise price		$	4.49		$	4.94		$	2.12
Exercisable at end of period			6,162,757			381,291			1,602,497		8,146,545		$	4.78
Exercisable at end of period - Weighted average exercise price		$	5.38		$	6.20		$	2.12

Schedule of non-vested share options activity


		2026
		Number											Weighted
		of options											average
		2019 Plan			Inducement Plan			2011 Plan			Total		fair value
Non-vested share options at beginning of period - 2019 Plan			2,953,423			—			—		2,953,423		$	1.77
Non-vested share options at beginning of period - Inducement Plan			—			301,917			—		301,917			2.03
Granted - 2019 Plan			2,807,000			—			—		2,807,000			1.55
Granted - Inducement Plan			—			542,000			—		542,000			1.62
Vested, outstanding - 2019 Plan			(1,340,374)			—			—		(1,340,374)			1.85
Vested, outstanding - Inducement Plan			—			(85,123)			—		(85,123)			2.56
Non-vested share options at end of period			4,420,049			758,794			—		5,178,843		$	1.61
Non-vested share options at end of period - Weighted average fair value		$	1.60		$	1.68		$	—


		2025
		Number											Weighted
		of options											average
		2019 Plan			Inducement Plan			2011 Plan			Total		fair value
Non-vested share options at beginning of period - 2019 Plan			2,754,054			—			—		2,754,054		$	2.33
Non-vested share options at beginning of period - Inducement Plan			—			176,709			—		176,709			4.19
Granted - 2019 Plan			1,511,400			—			—		1,511,400			1.62
Granted - Inducement Plan			—			244,000			—		244,000			1.62
Vested, outstanding - 2019 Plan			(1,312,205)			—			—		(1,312,205)			2.16
Vested, outstanding - Inducement Plan			—			(62,000)			—		(62,000)			4.53
Forfeited - Inducement Plan			—			(74,917)			—		(74,917)			1.82
Forfeited - 2019 Plan			(101,516)			—			—		(101,516)			1.76
Non-vested share options at end of period			2,851,733			283,792			—		3,135,525		$	2.10
Non-vested share options at end of period - Weighted average fair value		$	2.06		$	2.53		$	—

Schedule of weighted average assumptions for the options granted


	Three months ended June 30,							Six months ended June 30,
	2026			2025				2026			2025
Exercise price	$	1.29		$	1.75			$	1.79		$	1.97
Share price	$	1.29		$	1.75			$	1.79		$	1.97
Volatility		94	%		131	%			119	%		106	%
Risk-free interest rate		4.18	%		4.06	%			3.98	%		4.33	%
Expected life		5.46 years			5.27 years				5.93 years			5.93 years
Dividend		0	%		0	%			0	%		0	%

Schedule of restricted stock units

The total outstanding RSUs from the 2019 Plan as of and for the six-month periods ending June 30 were as follows:


		2026						2025
				Weighted						Weighted
		Number		average				Number		average
		of shares		exercise				of shares		exercise
				price						price
Outstanding at beginning of period		950,700		$	2.02			—		$	—
Granted		1,591,650			1.99			988,850			2.02
Vested		(237,677)			2.02			—			—
Forfeited		—			—			—			—
Outstanding at end of period		2,304,673		$	2.00			988,850		$	2.02

Schedule of share-based compensation expense


		Three months ended June 30,						Six months ended June 30,
		2026			2025			2026			2025
Selling, general and administrative		$	963		$	941		$	1,844		$	1,862
Research and development			375			367			776			797
Total		$	1,338		$	1,308		$	2,620		$	2,659