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AI brief of an SEC Form 8-K · Ameresco, Inc. (AMRC)

Ameresco CFO Mark Chiplock to resign effective September 25, 2026; guidance reaffirmed

Neutral Impact 4 of 5 leadership Written later

Ameresco said its Chief Financial Officer and Chief Accounting Officer, Mark Chiplock, will resign effective September 25, 2026, to take a CFO role at a private equity-owned company in a different industry. The company said the departure was not the result of any disagreement on its operations, policies or practices, and it has started a search for a successor. The company also reiterated its full-year 2026 guidance, which matters to shareholders because it gives no sign of a change in the outlook alongside the leadership change.

Key points

  • Mark A. Chiplock resigned as EVP, CFO and Chief Accounting Officer; the company received notice on August 17, 2026, and the resignation is effective September 25, 2026.
  • Chiplock will remain CFO through September 25, 2026, to support an orderly transition.
  • Full-year 2026 guidance reiterated: revenue of $2.0 billion to $2.2 billion, Adjusted EBITDA of $250 million to $270 million, and Non-GAAP EPS of $1.15 to $1.35.
  • The company has begun a search for its next Chief Financial Officer.

The filing

CompanyAmeresco, Inc. (AMRC)
Form8-K, current report
Filed with the SECAug 19, 2026, 4:12 PM ET
Accession number0001628280-26-057952

Items reported: 5.02 Director / Officer Change7.01 Regulation FD Disclosure

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 10:08 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on August 19, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.