Ameresco (NYSE: AMRC) ups term loan to $140M and names new Co‑Presidents, COO

Rhea-AI Filing Summary

Ameresco, Inc. amended its senior secured credit agreement to increase its Term Loan A by $45 million to $140 million, while maintaining a $225 million revolving credit facility, both maturing on December 28, 2028. Most of the new term loan proceeds repaid the outstanding revolver, leaving $140 million outstanding under the term loan. Quarterly principal payments are scheduled at $1.25 million starting March 31, 2025 and $1.81 million starting June 30, 2026, with the remaining balance due at maturity.

The credit facility remains secured by substantially all assets of Ameresco and certain domestic subsidiaries and guaranteed by those subsidiaries. Separately, effective April 1, 2026, Ameresco appointed Nicole Bulgarino and Lou Maltezos as Co‑Presidents and Peter Christakis as Chief Operating Officer, while George Sakellaris continues as Chief Executive Officer and Chairman, reflecting a leadership structure focused on data centers, large energy infrastructure, non‑federal projects, smart building solutions, and international operations.

Insights

Credit & governance analyst

Ameresco modestly ups term debt and formalizes a broader operating leadership team.

Ameresco increased its Term Loan A to $140 million, using most of the $45 million increment to pay down its $225 million revolver. This shifts a portion of borrowing from short‑term usage to a structured term loan maturing on December 28, 2028, with scheduled quarterly amortization.

The facility remains senior secured and guaranteed by key domestic subsidiaries, so creditors retain strong collateral coverage. On governance, appointing two Co‑Presidents and a dedicated COO while the long‑time CEO stays in place formalizes succession and operating depth without an abrupt leadership change. Future company filings may outline how responsibilities across data centers, federal and non‑federal projects, and international operations translate into financial performance.

8-K Event Classification

5 items: 1.01, 2.03, 5.02, 7.01, 9.01

5 items

Item 1.01 Entry into a Material Definitive Agreement Business

The company signed a significant contract such as a merger agreement, credit facility, or major partnership.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement Financial

The company incurred a new significant debt or off-balance-sheet obligation.

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Key Figures

Revolving credit facility: $225 million Original Term Loan A outstanding: $95 million Increased Term Loan A total: $140 million +5 more

8 metrics

Revolving credit facility $225 million Senior Secured Loan Agreement revolver capacity, maturing December 28, 2028

Original Term Loan A outstanding $95 million Outstanding prior to Amendment No. 2 under Senior Secured Loan Agreement

Increased Term Loan A total $140 million Term Loan balance after $45 million increase pursuant to Amendment No. 2

Incremental term loan amount $45 million Increase to Term Loan A under Amendment No. 2

Quarterly principal (initial) $1.25 million Term Loan A quarterly principal payments starting March 31, 2025

Quarterly principal (later) $1.81 million Term Loan A quarterly principal payments starting June 30, 2026

Maturity date December 28, 2028 Stated maturity for both revolver and Term Loan A

Term Loan outstanding post-closing $140 million Outstanding under Term Loan A immediately following Amendment No. 2 closing

Key Terms

Senior Secured Loan Agreement, revolving credit facility, term loan A, Co‑Presidents, +2 more

6 terms

Senior Secured Loan Agreement financial

"Amendment No. 2 (“Amendment No. 2”) to the Sixth Amended and Restated Credit Agreement (the “Senior Secured Loan Agreement”)"

A senior secured loan agreement is a contract where a lender provides money to a borrower and takes a top-priority claim on specific assets as pledge for repayment, meaning the lender is first in line to be paid if the borrower can’t meet obligations. For investors, this matters because the priority status and pledged assets usually lower credit risk and can affect expected returns, recovery prospects in distress, and the borrower’s ability to take on additional debt — think of it like a mortgage that gives the lender first dibs on the house if payments stop.

revolving credit facility financial

"The Senior Secured Loan Agreement, provided for a $225 million revolving credit facility ("Revolver")"

A revolving credit facility is a type of loan that a business can borrow from whenever it needs money, up to a set limit. It’s like having a credit card for companies—allowing them to borrow, pay back, and borrow again as needed, providing flexibility for managing cash flow or funding short-term expenses.

term loan A financial

"and a $100 million term loan A ("Term Loan") of which $95 million was outstanding"

Term Loan A is a portion of a company’s syndicated bank loan that is paid down with regular principal installments over a set period, usually carries lower interest and a shorter maturity than other loan tranches. It matters to investors because its scheduled repayments and interest cost affect a company’s cash flow and borrowing needs; heavy near‑term payments can reduce cash available for dividends, investment or increase refinancing risk, much like a mortgage with larger monthly payments limits household flexibility.

Co‑Presidents financial

"appointed Ms. Nicole A. Bulgarino and Mr. Louis P. Maltezos to serve as Co‑Presidents of the Company"

Chief Operating Officer financial

"and Mr. Peter Christakis to serve and Chief Operating Officer of the Company"

A chief operating officer (COO) is a senior executive responsible for overseeing the day-to-day activities of a company, ensuring that all parts of the organization work smoothly and efficiently. They often act like a company's operational quarterback, translating strategic plans into practical actions. For investors, the COO's effectiveness can influence a company's performance and stability, making them an important figure in assessing the company's management strength.

subsidiary guarantors financial

"guaranteed by certain of the Company's direct and indirect wholly owned domestic subsidiaries"

Understanding 8-K Material Events →

FALSE000148813900014881392026-03-302026-03-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 30, 2026

Ameresco, Inc.

(Exact Name of Registrant as Specified in Charter)

Delaware

001-34811

04-3512838

(State or Other Juris- diction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

111 Speen Street,

Suite 410,

Framingham,

MA

1701

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s telephone number, including area code: (508) 661-2200

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐						Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐						Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐						Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐						Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class			Trading Symbol			Name of exchange on which registered
Class A Common Stock, par value $0.0001 per share			AMRC			New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1033 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

☐

Item 1.01. Entry into a Material Definitive Agreement

On March 30, 2026, Ameresco, Inc. ("Ameresco" or the "Company") entered into Amendment No. 2 (“Amendment No. 2”) to the Sixth Amended and Restated Credit Agreement (the “Senior Secured Loan Agreement”) by and among the Company, Bank of America, N.A., as administrative agent, the lenders party thereto, BOFA Securities, Inc., KeyBanc National Association and Cooperative Robobank U.S., as joint lead arrangers and joint bookrunners, and Webster Bank N.A. as documentation agent.

The Senior Secured Loan Agreement, provided for a $225 million revolving credit facility ("Revolver"), maturing on December 28, 2028; and a $100 million term loan A ("Term Loan") of which $95 million was outstanding prior to the Closing of Amendment No.2, maturing on December 28, 2028. Pursuant to Amendment No. 2, the Term Loan was increased by $45 million to a total of $140 million, and pursuant to the Amendment No.2 the Term Loan requires quarterly principal payments of $1.25 million starting March 31, 2025 and $1.81 million starting June 30, 2026 with the balance due at maturity. All other material terms of the Senior Secured Loan Agreement remained unchanged. Most of the proceeds of the incremental term loan were used to repay the outstanding balance under the the Revolver and immediately following the closing, $140 million was outstanding under the increased Term Loan.

The obligations under the Senior Secured Loan Agreement continue to be guaranteed by certain of the Company's direct and indirect wholly owned domestic subsidiaries and to be secured by a pledge of all of the Company's and such subsidiary guarantors' assets (other than the equity interests of certain subsidiaries and assets held in subsidiaries that are non-core companies (as defined in the Senior Secured Loan Agreement). In connection with Amendment No. 2, the Company paid customary arrangement and lender fees and related expenses.

The foregoing description is qualified in its entirety by reference to the Senior Secured Loan Agreement filed as Exhibit 10.1 to the Company's Current Report on Form 8-K on January 23, 2025 and Amendment No. 2, which is filed as Exhibit 10.1 to this Current Report on Form 8‑K, both of which are incorporated herein by reference.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement.

The discussion in Item 1.01 is incorporated herein by reference.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Effective April 1, 2026, the Board of Directors of the Company appointed Ms. Nicole A. Bulgarino and Mr. Louis P. Maltezos to serve as Co‑Presidents of the Company and Mr. Peter Christakis to serve and Chief Operating Officer of the Company. With these appointments, Mr. Sakellaris will effective April 1, 2026 step down as President of Ameresco, Inc. continuing to report to the Company’s Board of Directors as Chief Executive Officer of the Company and to serve as the Chairman of the Board.

In her role as Co‑President, Ms. Bulgarino will continue to oversee the Company's data centers and large energy infrastructure projects with advanced power solutions, while continuing to guide the company’s Federal Solutions business. Ms. Bulgarino has been with the Company since 2004, including most recently serving as President - Federal Solutions and Utility Infrastructure and prior to that serving in various management capacities in the Company's federal solutions business.

In his role as Co‑President, Mr. Maltezos will also oversee the Company's non-federal project and Smart Building Solutions businesses and Canadian operations. Mr. Maltezos has been with the Company since 2004, including most recently serving as President - Central and Western USA and Canada Region and prior to that serving in various management capacities in the Company's projects, smart building solutions and Canada businesses.

In his role as Chief Operating Officer, Mr. Christakis will oversee procurement, health & safety and the Company's U.S. solar and battery operations and European operations. Mr. Christakis has been with the Company since 2000, including most recently serving as President - East USA, Greece and Project Risk and prior to that that serving in various management capacities in the Company's European, projects and solar businesses.

There are no arrangements or understandings between either of the Co‑Presidents or the Chief Operating Officer and any other persons pursuant to which they were appointed to their respective positions, and there are no related‑party transactions required to be disclosed pursuant to Item 404(a) of Regulation S‑K.

Item 7.01. Regulation FD

On March 31, 2026, the Company issued a press release announcing the appointments described in item 5.02 hereof. A copy of the press release is furnished hereto as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information in Item 7.01 of this Current Report on Form 8-K, including the press release incorporated herein by reference, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act, or otherwise subject to the liabilities of that section, and it shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or under the Exchange Act, whether made before or after the date hereof, except as expressly set forth by specific reference in such filing to this Item 7.01 of this Current Report on Form 8-K.]

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

The exhibits listed on the Exhibit Index immediately preceding such exhibits are furnished as part of this Current Report on Form 8-K

						EXHIBIT INDEX
Exhibit No.						Description
10.1						Second Amendment dated March 30, 2026 to Sixth Amended and Restated Credit Agreement dated as of January 23, 2025 among Ameresco, Inc., certain of its subsidiaries, the lenders (as defined therein), and Bank of America, N.A. as administrative agent.
99.1						Press Release dated March 31, 2026

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

AMERESCO, INC.

March 31, 2026

By:

/s/ Mark A. Chiplock

Mark A. Chiplock

Executive Vice President, Chief Financial Officer

Exhibit 99.1

Contacts:

Media Relations Leila Dillon, 508.661.2264, news@ameresco.com

Investor Relations Eric Prouty, Advisiry Partners, 212.750.5800, eric.prouty@advisiry.com

Lynn Morgen, Advisiry Partners, 212.750.5800, lynn.morgen@advisiry.com

Ameresco Announces Executive Appointments to Drive Growth and Strengthen Operations

Nicole Bulgarino and Lou Maltezos Named New Co‑Presidents of Ameresco

Peter Christakis Named COO

FRAMINGHAM, MA – March 31, 2026 – Ameresco, Inc., (NYSE: AMRC), a leading energy infrastructure solutions provider, today announced a series of strategic organizational changes that underscore the company’s commitment to strengthening its operations and accelerating its next phase of growth.

Effective April 1, 2026, Nicole Bulgarino and Lou Maltezos will be appointed Co-Presidents of Ameresco, and will co‑lead the company alongside George Sakellaris, who will continue to serve as Chief Executive Officer and Chairman of the Board of Directors. In addition to her expanded Co‑President role, Nicole will lead Ameresco’s increasing work supporting data centers and large energy infrastructure projects with advanced power solutions, while continuing to guide the company’s Federal Solutions business. In addition to his expanded co-President role, Lou will oversee the unified non‑Federal project organization to strengthen alignment and scale across the company’s operations, while continuing leadership of Smart Building Solutions and Ameresco Canada.

Together, these changes reflect Ameresco’s forward‑thinking approach to leadership continuity and succession planning, while positioning the company to capture expanding market opportunities through a unified strategy, greater consistency, and clear accountability across the business. The streamlined structure supports the optimized deployment of resources and expertise across Ameresco’s portfolio, strengthening operational alignment and accelerating execution. It also enables thoughtful integration with a strong emphasis on people, continuity, and a shared culture, reinforcing the principles of One Ameresco as teams collaborate seamlessly and grow together.

To further enhance alignment and company‑wide execution, Peter Christakis will be appointed Chief Operating Officer of Ameresco, supporting consistency across project execution and project risk management and reinforcing the company’s focus on disciplined delivery as it continues to scale. Peter will also continue to oversee Procurement, Health & Safety, U.S. solar and battery operations, and the company’s European operations, ensuring cohesive operational leadership across these critical functions.

“These appointments represent an exciting step forward as we elevate proven leaders and position Ameresco for the future,” said George Sakellaris, Chief Executive Officer of Ameresco. “They reflect the strength of our internal talent, my confidence in this leadership team, and our commitment to building the capabilities required for what’s next. I could not be more enthusiastic about Ameresco’s future and the exciting opportunities ahead.”

About Ameresco, Inc.

Founded in 2000, Ameresco, Inc. (NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the global energy transition. Our comprehensive portfolio includes implementing smart energy efficiency solutions, upgrading aging infrastructure, and developing, constructing, and operating distributed energy resources. As a trusted full-service partner, Ameresco shows the way by reducing energy use and delivering diversified generation solutions to Federal, state and local governments, utilities, data centers, educational and healthcare institutions, housing authorities, and commercial and industrial customers. Headquartered in Framingham, MA, Ameresco has more than 1,500 employees providing local expertise in North America and Europe. For more information, visit www.ameresco.com.

FAQ

What changes did Ameresco (AMRC) make to its credit facility?

Ameresco increased its Term Loan A by $45 million to $140 million under its senior secured credit agreement. The facility still includes a $225 million revolving credit line, with both the revolver and term loan maturing on December 28, 2028 under largely unchanged terms.

How will Ameresco use the additional $45 million term loan capacity?

Most of the incremental $45 million term loan proceeds were used to repay the outstanding balance on Ameresco’s $225 million revolving credit facility. Immediately after the amendment closed, $140 million was outstanding under the increased Term Loan A, effectively terming out part of revolver borrowings.

What are the new repayment terms for Ameresco’s Term Loan A?

Ameresco’s amended Term Loan A requires quarterly principal payments of $1.25 million starting March 31, 2025 and $1.81 million starting June 30, 2026. Any remaining principal will be due at the December 28, 2028 maturity, alongside the unchanged revolver maturity date.

Who are Ameresco’s new Co-Presidents and what will they oversee?

Effective April 1, 2026, Ameresco appointed Nicole Bulgarino and Lou Maltezos as Co‑Presidents. Bulgarino will lead data centers, large energy infrastructure and Federal Solutions, while Maltezos will oversee non‑federal projects, Smart Building Solutions, and Canadian operations within a unified project organization.

What role will Ameresco’s new Chief Operating Officer have?

Effective April 1, 2026, Peter Christakis becomes Chief Operating Officer, overseeing procurement, health and safety, U.S. solar and battery operations, and European operations. His role supports consistent project execution, risk management, and cohesive operational leadership across these key functional and regional areas.

Does Ameresco’s CEO role change under the new leadership structure?

Under the new structure, George Sakellaris steps down as President but continues as Chief Executive Officer and Chairman of the Board. He will co‑lead the company alongside the newly appointed Co‑Presidents, supporting leadership continuity while expanding the senior management team’s operational responsibilities.

Filing Exhibits & Attachments

5 documents

Press Releases

• EX-99.1 EX-99.1 8.9 KB

Agreements & Contracts

• EX-10.1 EX-10.1 20.6 KB

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT 1.7 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT 22.0 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT 12.7 KB