Every material Form 8-K Unitil filed with the SEC in 2026, 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.
Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.
Only material 8-Ks get a brief: results, deals, executive changes, restructuring, impairments, delisting notices, restatements, cybersecurity incidents and other disclosed events. Routine filings (vote results, exhibits only) are skipped. Every Unitil filing is on SEC EDGAR ↗. 8-K briefs of other companies →