Gagnon Securities LLC is listed with 999,794 Ameresco Class A shares, representing 2.9% ownership, and the related Neil Gagnon position is reported at 5.0%. The Schedule 13G states the securities were not acquired or held to change or influence Ameresco’s control, identifying the reported stance as passive.

Key Highlights

  • Gagnon Securities LLC is reported with 999,794 Ameresco Class A shares, or 2.9%.
  • Neil Gagnon is reported with 1,762,866 shares and 5.0% beneficial ownership.
  • Gagnon Advisors, LLC is listed with 472,798 shares, equal to 1.3%.

Ameresco, Inc. (NYSE: AMRC) has a reported 2.9% position from Gagnon Securities LLC, covering 999,794 shares of Class A common stock. The securities are held in customer accounts managed by Gagnon Securities, whose chief executive officer and principal owner is Neil Gagnon. The certification states the position was not acquired or held to change or influence Ameresco’s control. The filing is identified as a passive filing. The accounts hold the 999,794 shares attributed to Gagnon Securities.

Related Gagnon Holdings

Gagnon Advisors, LLC is listed with 472,798 Ameresco shares, representing 1.3% ownership. The shares are held by Gagnon Investment Associates, LLC, a private investment fund for which Gagnon Advisors serves as investment manager. Neil Gagnon is separately reported with 1,762,866 shares, equal to 5.0% ownership. His sole voting and dispositive power covers 153,541 shares, while shared voting power covers 1,551,948 shares and shared dispositive power covers 1,609,325 shares.

Passive Ownership Framework

The accounts have the right to receive dividends or direct the proceeds from sales of securities held in their respective accounts. The certification signed August 27, 2026, states that the securities were not acquired or held for the purpose or effect of changing or influencing Ameresco’s control.

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