STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

Mar. 31, 2026

Equity [Abstract]

Schedule of Assumptions Used in Estimating Fair Value

The following assumptions were used in estimating the fair value for equity-classified stock options granted on October 27, 2025:

Number of shares	185,000
Expected volatility	62.0%
Expected dividends	None
Expected term (in years)	6.0
Risk-free interest rate	3.61%
Expected forfeitures	None
Fair value per share	$0.73

Summary of the Activity in Share Options

The following table summarizes Barnwell’s equity-classified stock options activity from October 1, 2025 through March 31, 2026:

Options	Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at October 1, 2025	415,000	$	3.38
Granted	185,000	1.21
Exercised	—	—
Expired/Forfeited	(160,000)	3.45
Outstanding at March 31, 2026	440,000	$	2.44	6.8	$	—
Exercisable at March 31, 2026	255,000	$	3.33	4.9	$	—

Summary of the Activity in Restricted Stock Units

The following table summarizes Barnwell’s restricted stock unit activity from October 1, 2025 through March 31, 2026:

Restricted Stock Units	Shares	Weighted-Average Grant Date Fair Value
Nonvested at October 1, 2025	154,174	$	2.07
Granted	363,441	1.22
Vested	(40,750)	1.43
Forfeited	—	—
Nonvested at March 31, 2026	476,865	$	1.48