AMRCNYSEConstruction - Special Trade ContractorsFiscal year ends December 31
Ameresco, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 4, 2026
$18.86−0.64 (-3.28%)
Close on Oct 19, 2026
- Market cap
- $1.02B
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
67.0%
36M of 53M shares
Institutional holders
185
28 new, 27 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
13 buys · 16 sales
Net bought $453.59K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Wellington Group Holdings LLP | 4,735,585 | 13.60% | 13G (passive) amendment | Sep 30, 2025 |
| Wellington Investment Advisors Holdings LLP | 3,901,333 | 11.20% | 13G (passive) amendment | Dec 31, 2025 |
| Wellington Management Group LLP | 3,541,577 | 10.20% | 13G (passive) amendment | Mar 31, 2026 |
| BlackRock, Inc. | 2,384,012 | 7.00% | 13G (passive) amendment | Dec 31, 2023 |
| Grantham, Mayo, Van Otterloo & Co. LLC | 2,323,792 | 6.67% | 13G (passive) amendment | Dec 31, 2025 |
| Sakellaris George P | 20,723,638 | 39.50% | 13G (passive) amendment | Dec 31, 2024 |
| First Trust Portfolios L.P. | 1,872,101 | 5.41% | 13G (passive) | Jun 30, 2025 |
| Dimensional Fund Advisors LP | 1,815,018 | 5.20% | 13G (passive) | Sep 30, 2026 |
| Neil Gagnon | 1,762,866 | 5.00% | 13G (passive) | Aug 20, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of AMRC | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Wellington Management Group Llp | 3,374,767 | 6.36% | $93.14M | −166,810 | 0.02% |
| BlackRock, Inc. | 2,651,574 | 5.00% | $73.18M | +194,783 | 0.00% |
| Grantham, Mayo, Van Otterloo & Co. LLC | 2,030,950 | 3.83% | $56.05M | −198,684 | 0.13% |
| Dimensional Fund Advisors LP | 1,601,338 | 3.02% | $44.19M | +161,669 | 0.01% |
| State Street Corp | 1,601,127 | 3.02% | $44.19M | +271,614 | 0.00% |
| First Eagle Investment Management, LLC | 1,498,162 | 2.82% | $41.35M | +942,828 | 0.03% |
| Millennium Management LLC | 1,487,282 | 2.80% | $41.05M | +1,234,942 | 0.01% |
| Vanguard Capital Management LLC | 1,430,762 | 2.70% | $39.49M | +71,863 | 0.00% |
| D. E. Shaw & Co., Inc. | 1,258,266 | 2.37% | $34.73M | −13,703 | 0.02% |
| DnB Asset Management AS | 1,025,498 | 1.93% | $28.30M | +123,212 | 0.08% |
| Royce & Associates LP | 998,183 | 1.88% | $27.55M | −251,725 | 0.22% |
| Vanguard Portfolio Management LLC | 914,162 | 1.72% | $25.23M | +68,293 | 0.00% |
| Geode Capital Management, LLC | 862,848 | 1.63% | $23.82M | +69,995 | 0.00% |
| Handelsbanken Fonder AB | 857,979 | 1.62% | $23.68K | +42,826 | 0.07% |
| Gagnon Securities LLC | 826,562 | 1.56% | $22.81M | −13,501 | 4.40% |
| American Century Companies Inc | 798,121 | 1.50% | $22.03M | +271,967 | 0.01% |
| Legal & General Group Plc | 796,268 | 1.50% | $21.98M | +247,058 | 0.00% |
| UBS Group AG | 726,028 | 1.37% | $20.04M | +307,898 | 0.00% |
| Swedbank AB | 718,000 | 1.35% | $19.82M | +73,000 | 0.02% |
| Morgan Stanley | 648,022 | 1.22% | $17.89M | −22,600 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 185 | 36M | 67.0% | 28 / 73 | 57 / 27 | 6M | 3M |
| Q1 2026 | 187 | 33M | 62.4% | 38 / 66 | 51 / 36 | 6M | 4M |
| Q4 2025 | 189 | 33M | 62.6% | 32 / 61 | 58 / 29 | 4M | 4M |
| Q3 2025 | 187 | 34M | 63.5% | 46 / 41 | 68 / 23 | 7M | 7M |
| Q2 2025 | 165 | 34M | 63.2% | 27 / 70 | 47 / 40 | 6M | 4M |
| Q1 2025 | 180 | 31M | 58.4% | 43 / 64 | 50 / 38 | 7M | 7M |
| Q4 2024 | 181 | 32M | 60.1% | 27 / 59 | 59 / 31 | 3M | 4M |
| Q3 2024 | 186 | 33M | 61.6% | 25 / 63 | 65 / 26 | 6M | 4M |
| Q2 2024 | 189 | 33M | 62.3% | 34 / 68 | 62 / 29 | 4M | 4M |
| Q1 2024 | 186 | 33M | 62.7% | 38 / 61 | 62 / 34 | 5M | 4M |
| Q4 2023 | 183 | 33M | 62.0% | 26 / 65 | 68 / 35 | 4M | 5M |
| Q3 2023 | 193 | 34M | 63.2% | 25 / 72 | 65 / 29 | 3M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of AMRC | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 1,041,295 | 1.96% | $28.74M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 856,237 | 1.61% | $23.63M | 0.03% | Jun 30, 2026 |
| First Eagle Small Cap Opportunity Fund | 672,080 | 1.27% | $14.16M | 0.49% | Jul 31, 2026 |
| GMO Resources Fund | 555,885 | 1.05% | $20.00M | 1.54% | May 31, 2026 |
| State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF | 550,281 | 1.04% | $15.19M | 0.53% | Jun 30, 2026 |
| GMO Climate Change Fund | 526,763 | 0.99% | $18.95M | 2.79% | May 31, 2026 |
| Avantis U.S. Small Cap Value ETF | 395,969 | 0.75% | $14.25M | 0.05% | May 31, 2026 |
| Vanguard Small-Cap Index Fund | 380,327 | 0.72% | $10.50M | 0.01% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 358,764 | 0.68% | $7.56M | 0.02% | Jul 31, 2026 |
| Vanguard Extended Market Index Fund | 356,768 | 0.67% | $9.85M | 0.01% | Jun 30, 2026 |
| The Hartford Small Company Fund | 341,095 | 0.64% | $7.19M | 1.07% | Jul 31, 2026 |
| U.S. Small Cap Value Portfolio | 327,105 | 0.62% | $6.89M | 0.04% | Jul 31, 2026 |
| Range Nuclear Renaissance Index ETF | 322,140 | 0.61% | $11.59M | 1.30% | May 31, 2026 |
| iShares Russell 2000 Value ETF | 309,031 | 0.58% | $8.53M | 0.06% | Jun 30, 2026 |
| Royce Small-Cap Opportunity Fund | 277,559 | 0.52% | $7.66M | 0.54% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| George P. Sakellaris | Chief Executive Officer, Director, 10% owner | 20,319,847 | 38.29% | Sep 14, 2026 |
| David J. Corrsin | EVP and General Counsel, Director | 20,912 | 0.04% | Aug 19, 2026 |
| Louis P. Maltezos | Co-President | 33,628 | 0.06% | Sep 17, 2026 |
| Mark Chiplock | EVP, CFO & CAO | 2,815 | 0.01% | Sep 17, 2026 |
| Nicole E. Bulgarino | Co-President | 61,171 | 0.12% | Sep 14, 2026 |
| Peter Christakis | Chief Operating Officer | 15,106 | 0.03% | Sep 14, 2026 |
| Michael T. Bakas | President - Renewable Fuels | 13,634 | 0.03% | Mar 12, 2026 |
| Joseph W. Sutton | Director | 213,601 | 0.40% | Aug 26, 2026 |
| Jennifer L. Miller | Director | 34,546 | 0.07% | Aug 26, 2026 |
| Brian C. Cox | Director | 44,325 | 0.08% | Aug 25, 2026 |
| Charles R. Patton | Director | 23,824 | 0.04% | Jun 5, 2026 |
| Claire D'Oyly-Hughes Johnson | Director | 22,346 | 0.04% | Jun 5, 2026 |
| Francis V. Wisneski Jr | Director | 35,667 | 0.07% | Jun 5, 2026 |
| Nickolas Stavropoulos | Director | 24,546 | 0.05% | Jun 5, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Louis P. Maltezos Co-President | Sep 15, 2026 | Sale(10b5-1 plan) | −592 | $22.46 | $13.30K | 33,628 |
| Mark Chiplock EVP, CFO & CAO | Sep 15, 2026 | Sale(10b5-1 plan) | −476 | $22.46 | $10.69K | 2,815 |
| Nicole E. Bulgarino Co-President | Sep 10, 2026 | Option exercise | +1,875 | – | – | 61,171 |
| Mark Chiplock EVP, CFO & CAO | Sep 10, 2026 | Option exercise | +1,625 | – | – | 3,291 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Sep 10, 2026 | Option exercise | +6,250 | – | – | 1,019,847 |
| Louis P. Maltezos Co-President | Sep 10, 2026 | Option exercise | +2,125 | – | – | 34,220 |
| Peter Christakis Chief Operating Officer | Sep 10, 2026 | Option exercise | +1,750 | – | – | 15,106 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 28, 2026 | Buy | +3,000 | $22.13 | $66.39K | 1,013,597 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 27, 2026 | Buy | +4,000 | $22.84 | $91.36K | 1,010,597 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 26, 2026 | Buy | +1,000 | $21.92 | $21.92K | 1,006,597 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 25, 2026 | Buy | +4,062 | $22.03 | $89.49K | 1,005,597 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 25, 2026 | Buy | +938 | $21.60 | $20.26K | 1,001,535 |
| Joseph W. Sutton Director | Aug 24, 2026 | Buy | +9,700 | $20.87 | $202.44K | 80,246 |
| Jennifer L. Miller Director | Aug 24, 2026 | Buy | +2,000 | $20.96 | $41.92K | 34,546 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 24, 2026 | Buy | +5,000 | $20.91 | $104.55K | 1,000,597 |
| Brian C. Cox Director | Aug 21, 2026 | Buy | +4,625 | $21.64 | $100.09K | 44,325 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 11, 2026 | Buy | +1,000 | $25.90 | $25.90K | 995,597 |
| Brian C. Cox Director | Aug 10, 2026 | Buy | +39,700 | $25.07 | $995.28K | 39,700 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 10, 2026 | Buy | +1,000 | $25.27 | $25.27K | 994,597 |
| George P. Sakellaris Chief Executive Officer, Director, 10% owner | Aug 7, 2026 | Buy | +5,000 | $25.95 | $129.75K | 993,597 |
| Nickolas Stavropoulos Director | Jun 4, 2026 | Option exercise | +10,435 | – | – | 24,546 |
| Jennifer L. Miller Director | Jun 4, 2026 | Option exercise | +10,435 | – | – | 32,546 |
| Joseph W. Sutton Director | Jun 4, 2026 | Option exercise | +10,435 | – | – | 70,546 |
| Francis V. Wisneski Jr Director | Jun 4, 2026 | Option exercise | +10,435 | – | – | 35,667 |
| Claire D'Oyly-Hughes Johnson Director | Jun 4, 2026 | Option exercise | +10,435 | – | – | 20,546 |
| Charles R. Patton Director | Jun 4, 2026 | Option exercise | +10,435 | – | – | 23,824 |
| Francis V. Wisneski Jr Director | May 29, 2026 | Sale | −5,000 | $36.12 | $180.60K | 25,232 |
| Francis V. Wisneski Jr Director | May 29, 2026 | Option exercise | +5,000 | $5.80 | $29.00K | 30,232 |
| Francis V. Wisneski Jr Director | May 19, 2026 | Sale | −10,000 | $30.29 | $302.90K | 25,232 |
| Francis V. Wisneski Jr Director | May 19, 2026 | Option exercise | +10,000 | $5.80 | $58.00K | 35,232 |
| Jennifer L. Miller Director | May 18, 2026 | Sale(10b5-1 plan) | −2,358 | $32.73 | $77.18K | 22,111 |
| Jennifer L. Miller Director | May 18, 2026 | Sale(10b5-1 plan) | −7,642 | $32.13 | $245.54K | 24,469 |
| Jennifer L. Miller Director | May 18, 2026 | Option exercise | +10,000 | $4.74 | $47.40K | 32,111 |
| Nickolas Stavropoulos Director | May 15, 2026 | Sale(10b5-1 plan) | −1,355 | $34.00 | $46.07K | 14,111 |
| Nickolas Stavropoulos Director | May 15, 2026 | Option exercise | +1,355 | $16.33 | $22.13K | 15,466 |
| Joseph W. Sutton Director | Apr 23, 2026 | Option exercise | +10,000 | $4.74 | $47.40K | 60,111 |
| David J. Corrsin EVP and General Counsel, Director | Mar 12, 2026 | Sale(10b5-1 plan) | −19 | $25.31 | $481 | 441 |
| Mark Chiplock EVP, CFO & CAO | Mar 12, 2026 | Sale(10b5-1 plan) | −273 | $25.31 | $6.91K | 1,666 |
| Louis P. Maltezos President-Central&West USA Can | Mar 12, 2026 | Sale(10b5-1 plan) | −306 | $25.31 | $7.74K | 32,095 |
| David J. Corrsin EVP and General Counsel, Director | Mar 10, 2026 | Option exercise | +50 | – | – | 460 |
| Peter Christakis President-EastUSA, ProjectRisk | Mar 10, 2026 | Option exercise | +750 | – | – | 13,356 |
| George P. Sakellaris President and CEO, Director, 10% owner | Mar 10, 2026 | Option exercise | +3,750 | – | – | 988,597 |
| Mark Chiplock EVP, CFO & CAO | Mar 10, 2026 | Option exercise | +750 | – | – | 1,939 |
| Nicole E. Bulgarino President - Federal & Utility | Mar 10, 2026 | Option exercise | +875 | – | – | 59,296 |
| Michael T. Bakas President - Renewable Fuels | Mar 10, 2026 | Option exercise | +875 | – | – | 13,634 |
| Louis P. Maltezos President-Central&West USA Can | Mar 10, 2026 | Option exercise | +875 | – | – | 32,401 |
| David J. Corrsin EVP and General Counsel, Director | Mar 10, 2026 | Sale(10b5-1 plan) | −50 | $26.34 | $1.32K | 379 |
| David J. Corrsin EVP and General Counsel, Director | Mar 8, 2026 | Option exercise | +50 | – | – | 429 |
| David J. Corrsin EVP and General Counsel, Director | Feb 27, 2026 | Option exercise | +20,000 | $4.64 | $92.80K | 20,471 |
| Nickolas Stavropoulos Director | Feb 20, 2026 | Option exercise | +15,700 | $16.33 | $256.38K | 29,811 |
| Nickolas Stavropoulos Director | Feb 20, 2026 | Sale(10b5-1 plan) | −15,700 | $34.15 | $536.16K | 14,111 |
| Nickolas Stavropoulos Director | Feb 19, 2026 | Sale(10b5-1 plan) | −400 | $34.00 | $13.60K | 14,111 |
| Nickolas Stavropoulos Director | Feb 19, 2026 | Option exercise | +400 | $16.33 | $6.53K | 14,511 |
| Nickolas Stavropoulos Director | Feb 13, 2026 | Option exercise | +245 | $16.33 | $4.00K | 14,356 |
| Nickolas Stavropoulos Director | Feb 13, 2026 | Sale(10b5-1 plan) | −245 | $34.05 | $8.34K | 14,111 |
| Nickolas Stavropoulos Director | Feb 12, 2026 | Sale(10b5-1 plan) | −200 | $34.00 | $6.80K | 14,111 |
| Nickolas Stavropoulos Director | Feb 12, 2026 | Option exercise | +200 | $16.33 | $3.27K | 14,311 |
| Nickolas Stavropoulos Director | Jan 28, 2026 | Sale(10b5-1 plan) | −100 | $34.00 | $3.40K | 14,111 |
| Nickolas Stavropoulos Director | Jan 28, 2026 | Option exercise | +100 | $16.33 | $1.63K | 14,211 |
| Mark Chiplock EVP, CFO & CAO | Oct 13, 2025 | Option exercise | +5,000 | $12.35 | $61.75K | 6,189 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Wisneski Frank Director | May 29, 2026 | 5,000 | $180.58K | May 29, 2026 | Stock Option Exercise |
| Wisneski Frank Director | May 19, 2026 | 10,000 | $302.90K | May 19, 2026 | Stock Option Exercise |
| Miller Jennifer Director | May 18, 2026 | 10,000 | $322.76K | May 18, 2026 | Stock Option Exercise |
| Stavropoulos Nickolas Director | May 15, 2026 | 1,355 | $45.09K | May 15, 2026 | Exercise of Stock Options |
| Stavropoulos Nickolas Director | Feb 13, 2026 | 17,700 | $589.23K | Feb 13, 2026 | Exercise of Stock Options |
| Stavropoulos Nickolas Director | Feb 12, 2026 | 200 | $6.74K | Feb 12, 2026 | Exercise of Stock Options |
| Stavropoulos Nickolas Director | Jan 28, 2026 | 100 | $3.30K | Jan 28, 2026 | Exercise of Stock Options |
| Chiplock Mark Officer | Oct 14, 2025 | 16,799 | $641.39K | Oct 13, 2025 | Exercise of Stock Options |
| Chiplock Mark Officer | Oct 9, 2025 | 5,000 | $192.95K | Oct 9, 2025 | Exercise of Stock Options |
| Chiplock Mark Officer | Oct 8, 2025 | 5,900 | $229.22K | Oct 8, 2025 | Exercise of Stock Options |
| Chiplock Mark Officer | Oct 7, 2025 | 5,900 | $225.68K | Oct 7, 2025 | Exercise of Stock Options |
| Chiplock Mark Officer | Oct 6, 2025 | 5,900 | $220.25K | Oct 6, 2025 | Exercise of Stock Options |
| Chiplock Mark Officer | Oct 1, 2025 | 5,602 | $188.12K | Oct 1, 2025 | Exercise of Stock Options |
| Miller Jennifer Director | Feb 3, 2025 | 40,000 | $842.60K | Feb 3, 2025 | Stock Option Exercise |
| Spencer Doran Hole Officer | Nov 27, 2024 | 14,000 | $380.80K | Nov 27, 2024 | STOCK OPTION EXERCISE |