UNITIL CORP Long Term Debt

• UNITIL CORP showed a decrease of -0.9% in Long Term Debt from 2024 to 2025.
• This data is from UNITIL CORP's annual report (Form 10-K), filed with the SEC on February 9, 2026.
• XBRL data for this metric is available from 2009 to 2025 (17 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
• Quarterly values from 10-Q filings: Q1 2010: $288.70 million | Q2 2010: $288.60 million | Q3 2010: $288.50 million | Q1 2011: $288.20 million | Q2 2011: $288.10 million | Q3 2011: $288.00 million | Q1 2012: $287.70 million | Q2 2012: $287.60 million | Q3 2012: $287.50 million | Q1 2013: $287.20 million | Q2 2013: $287.00 million | Q3 2013: $286.90 million | Q1 2014: $284.70 million | Q2 2014: $284.60 million | Q3 2014: $326.70 million | Q1 2015: $325.90 million | Q2 2015: $325.90 million | Q3 2015: $325.70 million | Q1 2016: $305.40 million | Q2 2016: $305.20 million | Q3 2016: $335.00 million | Q1 2017: $303.50 million | Q2 2017: $303.50 million | Q3 2017: $303.60 million | Q1 2018: $363.00 million | Q2 2018: $363.10 million | Q3 2018: $361.10 million | Q1 2019: $373.00 million | Q2 2019: $373.10 million | Q3 2019: $410.90 million | Q1 2020: $436.30 million | Q2 2020: $436.40 million | Q3 2020: $529.00 million | Q1 2021: $515.80 million | Q2 2021: $505.30 million | Q3 2021: $501.30 million | Q1 2022: $496.60 million | Q2 2022: $495.10 million | Q3 2022: $493.10 million | Q1 2023: $488.00 million | Q2 2023: $486.20 million | Q3 2023: $509.00 million | Q1 2024: $507.90 million | Q2 2024: $506.40 million | Q3 2024: $638.40 million | Q1 2025: $637.20 million | Q2 2025: $635.80 million | Q3 2025: $635.60 million.
• Over the full 17 years of available data (2009 to 2025), UNITIL CORP's Long Term Debt has grown by 154.2%.
• Historical annual values: Fiscal year 2025: $632.60 million | Fiscal year 2024: $638.40 million | Fiscal year 2023: $509.10 million | Fiscal year 2022: $489.10 million | Fiscal year 2021: $497.80 million | Fiscal year 2020: $523.10 million | Fiscal year 2019: $437.50 million | Fiscal year 2018: $387.40 million | Fiscal year 2017: $376.30 million | Fiscal year 2016: $316.80 million | Fiscal year 2015: $305.50 million | Fiscal year 2014: $328.90 million | Fiscal year 2013: $284.80 million | Fiscal year 2012: $287.30 million | Fiscal year 2011: $287.80 million | Fiscal year 2010: $288.30 million | Fiscal year 2009: $248.90 million.
• Data sourced from SEC EDGAR public filings as of August 5, 2026.

Last verified: August 5, 2026