0001786108 2026-09-30 2026-09-30 0001786108 trin:CommonStockParValue0001PerShareMember 2026-09-30 2026-09-30 0001786108 trin:SevenEightSevenFiveNotesDueTwoZeroTwoNineMember 2026-09-30 2026-09-30 0001786108 trin:NotesDueTwoMember 2026-09-30 2026-09-30 8-K 2026-09-30 TRINITY CAPITAL INC. MD 001-39958 35-2670395 1 N. 1st Street Suite 302 Phoenix AZ 85004 (480) 374-5350 false false false false Common Stock, par value $0.001 per share TRIN NASDAQ 7.875% Notes Due 2029 TRINZ NASDAQ 7.875% Notes Due 2029 TRINI NASDAQ false 0001786108 false