0000010048 2026-09-30 2026-09-30 false 0000010048 NYSE 8-K 2026-09-30 BARNWELL INDUSTRIES, INC. DE 1-5103 72-0496921 24 Greenway Plaza Suite 1800Q Houston TX 77046 713 730-7026 false false false false Common Stock, $0.50 Par Value BRN false