Every material Form 8-K Unitil has filed with the SEC since February 04, 2025, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
Unitil's subsidiary Maine Natural Gas issued $40 million of 5.95% senior unsecured notes due October 21, 2031, and the parent repaid all outstanding amounts under its Bank of Nova Scotia credit agreement on October 22, 2026. The notes are intended to refinance existing company debt and for general corporate purposes, and the repayment of the credit facility is a financing refinancing step with no reported change in earnings or guidance.
Maine Natural Gas Corporation sold $40,000,000 of 5.95% Senior Unsecured Notes due October 21, 2031, under a Note Purchase Agreement dated October 21, 2026.
Unitil repaid all outstanding amounts under its Amended and Restated Credit Agreement with The Bank of Nova Scotia on October 22, 2026, without premium or penalty.
The credit agreement had a borrowing limit of $86.0 million for tranche A and $50.0 million for tranche B, and the company may not reborrow repaid amounts.
Net proceeds are planned for refinancing existing debt of the company and/or general corporate purposes.
Unitil Energy Systems, a subsidiary of Unitil Corporation, sold $60 million of first mortgage bonds on October 14, 2026, in two series: $30 million at 5.72% due 2036 and $30 million at 5.87% due 2038. The company plans to use the proceeds to refinance existing debt and for general corporate purposes, and the bonds carry a fall-away collateral release that would raise the coupons by 0.10 percentage points.
Series T: $30 million, 5.72% coupon, due October 14, 2036
Series U: $30 million, 5.87% coupon, due October 14, 2038
Coupons rise to 5.82% (Series T) and 5.97% (Series U) if collateral is released, per the filing
Proceeds planned for refinancing existing debt and general corporate purposes
Unitil Corporation entered a Note Purchase Agreement on September 24, 2026, selling $27 million of 5.42% notes due 2031 and $33 million of 5.79% notes due 2036, totaling $60 million. The company plans to use the proceeds to make capital contributions to its utility subsidiaries, refinance existing debt and for general corporate purposes, which adds long-term debt to its balance sheet.
Series 2026A: $27 million of 5.42% senior unsecured notes due September 24, 2031
Series 2026B: $33 million of 5.79% senior unsecured notes due September 24, 2036
Proceeds planned for capital contributions to utility subsidiaries, debt refinancing and general corporate purposes
Notes sold privately to institutional investors under Section 4(a)(2) and are not registered under the Securities Act
Unitil Corporation completed its purchase of Aquarion Water Company of New Hampshire and Abenaki Water Co. from the Aquarion Water Authority on June 30, 2026. The purchase price was $55.8 million, including about $13.7 million of assumed debt, and the company funded it with a term loan from Scotiabank under an amended and restated credit agreement. The company said the acquisition is expected to be earnings accretive over the long term, but the filing gives no figures for near-term results.
The acquired systems include about 150 miles of water distribution mains and serve about 11,000 customers in eight New Hampshire communities.
Purchase price was $55.8 million, including $13.7 million of assumed debt, plus about $0.6 million for estimated working capital and reimbursable capital expenditures.
The credit agreement includes a $50.0 million Tranche B loan for these acquisitions, with amounts due June 30, 2027; Unitil borrowed $42.7 million on June 30, 2026.
Amendment No. 4, dated June 30, 2026, limited the purchase to Aquarion Water Company of New Hampshire and Abenaki Water Co.
Unitil Corporation signed Amendment No. 3 on May 25, 2026, to its purchase agreement for Aquarion Water Authority's water utility subsidiaries. The amendment moves the agreement's termination date from May 25, 2026 to June 30, 2026, which is the third extension of that date. The filing does not describe other changes, so the deal's status and terms are otherwise unchanged.
Amendment No. 3 dated May 25, 2026 changes the Termination Date in Section 8.1(d) from May 25, 2026 to June 30, 2026.
The deal covers all outstanding shares of Aquarion Water Company of Massachusetts, Aquarion Water Company of New Hampshire, and Abenaki Water Co., Inc.
Prior amendments moved the date from January 23, 2026 to February 23, 2026, then to May 25, 2026.
Except for the termination date, the purchase agreement remains unchanged.
On April 30, 2026, Fitchburg Gas and Electric Light Company, a Unitil subsidiary, issued $40 million of senior unsecured notes to State Farm and CoBank under a note purchase agreement. The company plans to use the proceeds to refinance existing debt and/or for general corporate purposes, which adds long-term debt at the subsidiary level.
Series 2026A: $23 million at 5.62%, due April 30, 2036
Series 2026B: $17 million at 5.87%, due April 30, 2041
Purchasers named are State Farm Life Insurance Company, State Farm Life and Accident Assurance Company and CoBank, ACB
Proceeds planned for refinancing existing Unitil debt and/or general corporate purposes
Unitil signed Amendment No. 2 to its purchase agreement for Aquarion Water Company of Massachusetts, Aquarion Water Company of New Hampshire and Abenaki Water Co., moving the agreement's termination date from February 23, 2026 to May 25, 2026. The filing also replaces Janney Montgomery Scott with Huntington Securities as an agent under the company's $50 million common stock distribution agreement.
Amendment No. 2, dated February 23, 2026, extends the purchase agreement's termination date to May 25, 2026, from February 23, 2026.
The Aquarion companies are being acquired from Aquarion Water Authority, with South Central Connecticut Regional Water Authority party to the amendment.
On February 19, 2026, Huntington Securities replaced Janney Montgomery Scott under the $50 million distribution agreement for common stock sales.
Stock sales under the distribution agreement, if any, will be made under an effective Form S-3ASR registration statement.
On January 27, 2026, Unitil's Compensation Committee approved revised practices for restricted stock awards to executive officers and senior managers, changing only the treatment of dividends on those awards. The same day, the company granted restricted and unrestricted shares to its CEO, CFO and other named executive officers, with vesting tied to return on equity and book value per share goals.
Revised practices approved January 27, 2026; prior practices adopted January 24, 2023
CEO Thomas P. Meissner, Jr. received 8,090 time-restricted and 8,090 performance-restricted shares, plus 310 unrestricted shares
Performance-restricted shares depend on three-year average return on common equity and book value per share growth for the period ending December 31, 2028
Unitil signed Amendment No. 1 to its Purchase and Sale Agreement with Aquarion Water Authority and South Central Connecticut Regional Water Authority on January 23, 2026. The amendment moves the agreement's termination date from January 23, 2026 to February 23, 2026, and the filing says the rest of the agreement is unchanged. The filing does not state the purchase price, so shareholders can only see that the deadline for the pending acquisition has been extended by one month.
Amendment dated January 23, 2026 replaces January 23, 2026 with February 23, 2026 as the Termination Date in Section 8.1(d).
Original Purchase Agreement dated May 6, 2025 covers all issued and outstanding shares of Aquarion Water Company of Massachusetts, Aquarion Water Company of New Hampshire and Abenaki Water Co., Inc.
Except for the termination date change, the Purchase Agreement remains unchanged, according to the filing.
Unitil's board appointed Carleton B. Simpson, 35, as senior vice president and general counsel, effective immediately, with the appointment dated October 29, 2025. Simpson previously served as a commissioner of the New Hampshire Public Utilities Commission from December 2021 to August 2024, and as vice president of energy transformation at subsidiary Fitchburg Gas and Electric Light Company since December 2024. The filing describes a routine officer appointment with no financial figures disclosed.
Carleton B. Simpson, 35, appointed senior vice president and general counsel, effective immediately
Appointment made by the board on October 29, 2025; officer term runs until the first board meeting after the next annual shareholder meeting
Previously a commissioner of the New Hampshire Public Utilities Commission from December 2021 to August 2024
Previously vice president of energy transformation at Fitchburg Gas and Electric Light Company since December 2024
Unitil Corporation completed its purchase of Maine Natural Gas Company from Avangrid Enterprises on October 31, 2025, and financed $86.0 million of the price with a term loan from The Bank of Nova Scotia under a new credit agreement. The acquisition adds about 6,300 natural gas customers and brings Unitil's total to approximately 213,300 customers across Maine, New Hampshire and Massachusetts, and the filing gives no earnings or guidance effect.
Purchase price was $86.0 million, plus approximately $7.1 million for estimated working capital, including cash on hand and certain regulatory assets.
Unitil borrowed $86.0 million on October 31, 2025 under a credit agreement with a borrowing limit of $86 million, which matures October 31, 2026.
Maine Natural serves about 6,300 customers and had an estimated $69.0 million of rate base as of December 31, 2024.
Avangrid will provide transition services to Maine Natural for up to 12 months, with Unitil reimbursing actual costs without a profit factor.
Unitil Corporation (NYSE: UTL) agreed on August 14, 2025 to sell 1,393,355 shares of common stock at $46.65 per share, with an option for underwriters to buy up to 209,003 more shares. The company expects about $62 million in net proceeds, which it plans to use to make equity contributions to its utility subsidiaries, repay credit facility debt, and for general corporate purposes. The offering is expected to close on August 18, 2025, and the company and its executive officers and directors agreed to customary share sale restrictions for 60 days after closing.
Offering: 1,393,355 shares at $46.65 per share, priced August 14, 2025
Underwriters have a 30-day option to buy up to 209,003 additional shares
Expected net proceeds of about $62 million, to fund utility equity contributions, repay Bank of America-agented credit facility debt, and general corporate purposes
Expected closing date August 18, 2025; 60-day share sale restriction after closing
Bangor Natural Gas Company, a natural gas distribution subsidiary of Unitil Corporation, issued $14 million of 5.70% senior unsecured notes due 2030 and $18 million of 6.31% senior unsecured notes due 2035 under a Note Purchase Agreement dated July 8, 2025 with CoBank, ACB and United of Omaha Life Insurance Company. The company plans to use the net proceeds to refinance existing debt on a consolidated basis and for general corporate purposes, which adds $32 million of long-term debt obligations.
$14 million of 5.70% Senior Unsecured Notes, Series 2025A, due July 8, 2030, issued to CoBank, ACB.
$18 million of 6.31% Senior Unsecured Notes, Series 2025B, due July 8, 2035, issued to United of Omaha Life Insurance Company.
Net proceeds will refinance existing Company debt on a consolidated basis and fund general corporate purposes.
The notes were offered principally to institutional investors under Section 4(a)(2) and are not registered under the Securities Act of 1933.
Unitil Corporation signed a Distribution Agreement allowing it to sell up to $50 million of common stock over time through sales agents, with optional forward stock purchase transactions. The company is not obligated to make any sales, and actual sales will depend on market conditions and its capital needs, so the program may dilute existing shareholders if used.
Up to $50 million aggregate sales price of common stock may be sold through Janney Montgomery Scott LLC and Scotia Capital (USA) Inc.
Sales agent commission rate of up to 2.0% of gross sales price, plus expense reimbursement
Sales are made under a Form S-3ASR that became automatically effective on June 3, 2025
Company is not obligated to sell any shares; The Bank of Nova Scotia and Janney Montgomery Scott LLC serve as forward purchasers
Unitil Corporation agreed on May 6, 2025 to acquire three water utilities from the Aquarion Water Authority for $100.0 million, including about $30.0 million of assumed debt. The company has committed debt financing of $100.0 million from The Bank of Nova Scotia, and the closing is expected in late 2025, subject to approvals from state utility commissions in Massachusetts, New Hampshire and Maine.
Purchase price is $100.0 million, including approximately $30.0 million of assumed debt, subject to adjustments.
Bank of Nova Scotia committed a $100.0 million senior unsecured delayed-draw term loan facility, maturing on the first anniversary of the closing.
Closing requires approval from the Massachusetts Department of Public Utilities, the New Hampshire Public Utilities Commission and the Maine Public Utilities Commission, and is expected in late 2025.
The Aquarion Companies serve about 12,000 customers in seven Massachusetts communities and 11,000 customers in eight New Hampshire communities.
Unitil Corporation agreed on March 31, 2025 to acquire all outstanding shares of Maine Natural Gas Company from Avangrid Enterprises for $86.0 million in cash, subject to certain adjustments. The deal is subject to approval by the Maine Public Utilities Commission and is expected to close by the end of 2025, with the purchase to be funded by a $86.0 million delayed-draw term loan from The Bank of Nova Scotia. The company says the acquisition is expected to be earnings accretive over the long term and to support its long-term earnings per share growth of 5% to 7%.
Purchase price is $86.0 million in cash on a debt-free basis, subject to adjustment for closing working capital and transaction expenses; the agreement includes no escrow or holdback
Closing requires an order from the Maine Public Utilities Commission and is expected by the end of 2025
Debt commitment letter from The Bank of Nova Scotia provides a $86.0 million senior unsecured delayed-draw term loan with a maturity of the first anniversary of closing, and includes a 65% debt to capitalization ratio covenant tested quarte
Maine Natural serves approximately 6,300 residential and commercial natural gas customers and had an estimated $69.0 million of rate base as of December 31, 2024
Unitil completed its purchase of Bangor Natural Gas Company from PHC Utilities on January 31, 2025, paying $70.9 million in cash plus about $0.3 million for a working capital adjustment. The company also amended its credit agreement to raise the borrowing limit from $200 million to $275 million and extend the term to September 29, 2028, which adds capacity and maturity for shareholders to track.
Unitil paid $70.9 million in cash plus about $0.3 million as a working capital adjustment; the deal closed January 31, 2025.
Bangor adds approximately 8,500 customers and 351 miles of distribution pipelines; Unitil now serves about 207,000 customers in Maine, New Hampshire and Massachusetts.
The credit agreement borrowing limit rises from $200 million to $275 million, and its term extends from September 29, 2027 to September 29, 2028.
Hope Utilities will provide transition services to Bangor for up to 12 months, with Unitil reimbursing actual costs without a profit factor.
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