Equity Incentive Plans and Warrants (Tables)

3 Months Ended

Mar. 31, 2026

Equity Incentive Plans and Warrants [Abstract]

Stock Option Plans Activity

Activity under the Company’s stock option plans for the three months ended March 31, 2026 was as follows:

	Number of options			Weighted average exercise price		Aggregate Intrinsic Value
Outstanding at December 31, 2025	3,830,391		$	1.47		92,127
Granted	45,200			0.60
Forfeited	(623,322	)		1.36
Outstanding at March 31, 2026	3,252,269		$	1.48	$	—
Vested and exercisable at March 31, 2026	1,904,941		$	1.85	$	—

Black-Scholes Weighted Average Assumptions

The Black-Scholes weighted- average assumptions for stock option awards granted in the first quarter of 2026 was as follows:

	Three Months Ended March 31, 2026
		2021 Plan		Inducement Grants
Fair Value of Awards	$	0.47		0.37
Grant Price	$	0.6		0.46
Expected term (in years)		6.06		6.25
Risk‑free interest rate		3.89	%	3.83	%
Dividend yield		—	%	—	%
Expected volatility		95.8	%	96.84	%

Restricted Stock Units (RSUs)

Restricted stock units were granted to employees in the first quarter of 2026 with service-based vesting conditions. Related activity during the three months ended March 31, 2026 was as follows:

	Number of RSUs			Weighted average grant date fair value
Outstanding at December 31, 2025	—		$	—
Granted	1,435,000			0.54
Forfeited	(5,000	)		0.52
Outstanding at March 31, 2026	1,430,000		$	0.54

Share-based Compensation Expense

The following table shows the share-based compensation expense related to vested stock option and RSU grants to employees and nonemployees by financial statement line item on the accompanying condensed statements of comprehensive loss:

		Three Months Ended March 31,
		2026	2025
Research and development	$	28,937	136,924
Sales and marketing		15,924	(10,431	)
General and administrative		106,747	240,744
Total share-based compensation expense	$	151,608	367,237

Stock-based compensation expense by award type during the three months ended March 31, 2026 and 2025 was as follows:

	Three Months Ended March 31,
		2026	2025
Stock options	$	106,875	367,237
Restricted stock units		44,733	—
Total share-based compensation expense	$	151,608	367,237

Inducement Grants [Member]

Equity Incentive Plans and Warrants [Abstract]

Stock Option Plans Activity

The inducement grants are summarized as follows:

	Number of options			Weighted average exercise price	Weighted average remaining life years
Outstanding at December 31, 2025	137,500		$	2.52	4.53
Granted	335,000			0.46	9.94
Forfeited	(37,500	)		1.32	—
Outstanding at March 31, 2026	435,000		$	1.04	9.02
Vested and exercisable at March 31, 2026	100,000		$	2.97	5.91