Cover	Aug. 05, 2026
Document Type	8-K
Amendment Flag	false
Document Period End Date	Aug. 05, 2026
Entity File Number	001-39958
Entity Registrant Name	TRINITY CAPITAL INC.
Entity Central Index Key	0001786108
Entity Tax Identification Number	35-2670395
Entity Incorporation, State or Country Code	MD
Entity Address, Address Line One	1 N. 1st Street
Entity Address, Address Line Two	Suite 302
Entity Address, City or Town	Phoenix
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85004
City Area Code	480
Local Phone Number	374-5350
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Common Stock, par value $0.001 per share \| New York Stock Exchange
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	TRIN
Security Exchange Name	NYSE
Common Stock, par value $0.001 per share \| NYSE Texas, Inc.
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	TRIN
Security Exchange Name	CHX
7.875% Notes Due March 2029 \| New York Stock Exchange
Title of 12(b) Security	7.875% Notes Due March 2029
Trading Symbol	TRNZ
Security Exchange Name	NYSE
7.875% Notes Due March 2029 \| NYSE Texas, Inc.
Title of 12(b) Security	7.875% Notes Due March 2029
Trading Symbol	TRNZ
Security Exchange Name	CHX
7.875% Notes Due September 2029 \| New York Stock Exchange
Title of 12(b) Security	7.875% Notes Due September 2029
Trading Symbol	TRNI
Security Exchange Name	NYSE
7.875% Notes Due September 2029 \| NYSE Texas, Inc.
Title of 12(b) Security	7.875% Notes Due September 2029
Trading Symbol	TRNI
Security Exchange Name	CHX

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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Address Line 1 such as Attn, Building Name, Street Name

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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Two-character EDGAR code representing the state or country of incorporation.

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Local phone number for entity.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

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Trading symbol of an instrument as listed on an exchange.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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