X0202 SCHEDULE 13D/A 0000921895-25-003243 0001380585 XXXXXXXX LIVE 1 Common Stock, $0.50 par value 03/28/2026 false 0000010048 068221100 BARNWELL INDUSTRIES INC

24 GREENWAY PLAZA SUITE 1800Q HOUSTON TX 77046

BRADLEY L. RADOFF 713-482-2196 2727 Kirby Drive, Unit 29L Houston TX 77098 RYAN NEBEL 212-451-2300 OLSHAN FROME WOLOSKY LLP 1325 Avenue of the Americas New York NY 10019 0001496916 N Radoff Family Foundation WC N TX 0.00 840135.00 0.00 840135.00 840135.00 N 6.5 CO 0001380585 N Radoff Bradley Louis AF PF N X1 840136.00 840135.00 840136.00 840135.00 1680271.00 N 12.8 IN Common Stock, $0.50 par value BARNWELL INDUSTRIES INC 24 GREENWAY PLAZA SUITE 1800Q HOUSTON TX 77046 This Amendment No. 1 to the Schedule 13D is being filed to reflect the fact that the Common Warrants (as defined and described in the initial Schedule 13D) held by the Reporting Persons are exercisable within the next 60 days. Item 5(a) is hereby amended and restated to read as follows: The aggregate percentage of Shares reported owned by the Reporting Persons is based upon 12,566,314 Shares outstanding as of February 20, 2026, which is the total number of Shares outstanding as disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on February 23, 2026, plus the Shares underlying the Common Warrants that are exercisable by the Reporting Persons within the next 60 days, as applicable. As of the date hereof, the Radoff Foundation directly beneficially owned 840,135 Shares, including 280,045 Shares underlying the Common Warrants, constituting approximately 6.5% of the Shares outstanding. As of the date hereof, Mr. Radoff directly beneficially owned 840,136 Shares, including 280,045 Shares underlying the Common Warrants, constituting approximately 6.5% of the Shares outstanding. Mr. Radoff, as a director of the Radoff Foundation, may be deemed to beneficially own the 840,135 Shares beneficially owned by the Radoff Foundation, which, together with the Shares he directly beneficially owns, constitutes an aggregate of 1,680,271 Shares, constituting approximately 12.8% of the Shares outstanding. The filing of this Schedule 13D shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Exchange Act, the beneficial owners of any securities of the Issuer that he or it does not directly own. Each Reporting Person disclaims beneficial ownership of the Shares that he or it does not directly own. Item 5(c) is hereby amended and restated to read as follows: There have been no transactions in the securities of the Issuer by the Reporting Persons during the past 60 days. Radoff Family Foundation /s/ Bradley L. Radoff 03/31/2026 Radoff Bradley Louis /s/ Bradley L. Radoff 03/31/2026