X0708 D LIVE 0002163100 Frontier18 I LLC 1111 BEACON STREET, NO. 61 BROOKLINE MA MASSACHUSETTS 02446 202-262-9189 DELAWARE None None Limited Liability Company true 2026 Jeffrey Frumin 1111 Beacon Street, No 61 Brookline MA MASSACHUSETTS 02446 Executive Officer Revital Reitzes 1111 Beacon Street, No 61 Brookline MA MASSACHUSETTS 02446 Executive Officer Business Services No Revenues 06b 3C 3C.1 false 2026-10-19 false true true false 0 R.F. Lafferty & Co., Inc. 000002498 None None 40 Wall Street New York NY NEW YORK 10004 NY NEW YORK false 3360000 3360000 0 false 1 135000 0 0 false Frontier18 I LLC /s/ Jeffrey Frumin Jeffrey Frumin Co-Managing Director 2026-11-03