Ameresco, Inc.
DE ˙ DB ˙ US02361E1082
28,10 € ↓ -2,80 (-9,06%)
2026-06-04
DEL PRIS
SecurityDE:4AM / Ameresco, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership47,712 shares
Latest Disclosed Value $ 1,216,649
Rhumbline Advisers reports 3.01% decrease in ownership of 4AM / Ameresco, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 47,712 shares of Ameresco, Inc. (DE:4AM) valued at $1,052,527 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 49,191 shares of Ameresco, Inc.. This represents a change in shares of -3.01% during the quarter. The current value of the position is $1,340,707 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F AMERESCO INC CL A COM 02361E108 47,712 -1,479 -3.01 1,217 -15.56 0.0010
2026-02-13 2025-12-31 13F AMERESCO INC CL A COM 02361E108 49,191 -4,794 -8.88 1,441 -20.53 0.0012
2025-11-06 2025-09-30 13F AMERESCO INC CL A COM 02361E108 53,985 -998 -1.82 1,813 117.01 0.0015
2025-08-12 2025-06-30 13F AMERESCO INC CL A COM 02361E108 54,983 5,404 10.90 835 39.63 0.0007
2025-05-29 2025-03-31 13F/A-1 AMERESCO INC CL A COM 02361E108 49,579 -396 -0.79 599 -49.02 0.0006
2025-04-08 2025-03-31 13F AMERESCO INC CL A COM 02361E108 49,579 -396 599 0.0006
2025-05-29 2024-12-31 13F/A-1 AMERESCO INC CL A COM 02361E108 49,975 -777 -1.53 1,173 -39.06 0.0010
2025-01-30 2024-12-31 13F AMERESCO INC CL A COM 02361E108 49,975 -777 1,173 0.0010
2024-11-12 2024-09-30 13F AMERESCO INC CL A COM 02361E108 50,752 -665 -1.29 1,926 29.98 0.0017
2024-08-01 2024-06-30 13F AMERESCO INC CL A COM 02361E108 51,417 5,455 11.87 1,481 33.54 0.0014
2024-05-09 2024-03-31 13F AMERESCO INC CL A COM 02361E108 45,962 1,203 2.69 1,109 -21.74 0.0011
2024-02-08 2023-12-31 13F AMERESCO INC CL A COM 02361E108 44,759 -107 -0.24 1,418 -18.09 0.0015
2023-11-09 2023-09-30 13F AMERESCO INC CL A COM 02361E108 44,866 465 1.05 1,730 -19.87 0.0020
2023-08-08 2023-06-30 13F AMERESCO INC CL A COM 02361E108 44,401 1,033 2.38 2,159 107,850.00 0.0024
2023-05-11 2023-03-31 13F AMERESCO INC CL A COM 02361E108 43,368 1,418 3.38 2 -99.92 0.0026
2023-02-14 2022-12-31 13F AMERESCO INC CL A COM 02361E108 41,950 1,553 3.84 2,397 -10.76 0.0032
2022-11-10 2022-09-30 13F AMERESCO INC CL A COM 02361E108 40,397 3,121 8.37 2,686 58.19 0.0040
2022-08-11 2022-06-30 13F AMERESCO INC CL A COM 02361E108 37,276 5,053 15.68 1,698 -33.72 0.0025
2022-05-12 2022-03-31 13F AMERESCO INC CL A COM 02361E108 32,223 2,055 6.81 2,562 4.27 0.0033
2022-02-10 2021-12-31 13F AMERESCO INC CL A COM 02361E108 30,168 -110 -0.36 2,457 38.89 0.0030
2021-11-12 2021-09-30 13F AMERESCO INC CL A COM 02361E108 30,278 1,046 3.58 1,769 -3.49 0.0024
2021-08-05 2021-06-30 13F AMERESCO INC CL A COM 02361E108 29,232 4,680 19.06 1,833 53.52 0.0024
2021-05-06 2021-03-31 13F AMERESCO INC CL A COM 02361E108 24,552 -3,409 -12.19 1,194 -18.28 0.0016
2021-02-10 2020-12-31 13F AMERESCO INC CL A COM 02361E108 27,961 479 1.74 1,461 59.15 0.0020
2020-11-12 2020-09-30 13F AMERESCO INC CL A COM 02361E108 27,482 -4,220 -13.31 918 4.20 0.0014
2020-08-13 2020-06-30 13F AMERESCO INC CL A COM 02361E108 31,702 -6,232 -16.43 881 36.38 0.0015
2020-05-06 2020-03-31 13F AMERESCO INC CL A COM 02361E108 37,934 5,048 15.35 646 12.15 0.0014
2020-02-05 2019-12-31 13F AMERESCO INC CL A COM 02361E108 32,886 361 1.11 576 10.13 0.0010
2019-10-23 2019-09-30 13F AMERESCO INC CL A COM 02361E108 32,525 2,981 10.09 523 20.23 0.0010
2019-08-14 2019-06-30 13F AMERESCO INC CL A COM 02361E108 29,544 3,147 11.92 435 1.87 0.0008
2019-05-01 2019-03-31 13F AMERESCO INC CL A COM 02361E108 26,397 -419 -1.56 427 12.96 0.0008
2019-01-31 2018-12-31 13F AMERESCO INC CL A COM 02361E108 26,816 8,288 44.73 378 49.41 0.0008
2018-11-07 2018-09-30 13F AMERESCO INC CL A COM 02361E108 18,528 -50 -0.27 253 13.45 0.0005
2018-08-06 2018-06-30 13F AMERESCO INC CL A COM 02361E108 18,578 120 0.65 223 -7.08 0.0004
2018-05-02 2018-03-31 13F AMERESCO INC CL A COM 02361E108 18,458 -596 -3.13 240 46.34 0.0005
2018-02-09 2017-12-31 13F AMERESCO INC CL A COM 02361E108 19,054 -3,600 -15.89 164 -7.34 0.0003
2017-11-06 2017-09-30 13F AMERESCO INC CL A COM 02361E108 22,654 40 0.18 177 1.72 0.0004
2017-08-02 2017-06-30 13F AMERESCO INC CL A COM 02361E108 22,614 -3,150 -12.23 174 2.96 0.0004
2017-05-02 2017-03-31 13F AMERESCO INC CL A COM 02361E108 25,764 1,000 4.04 169 24.26 0.0004
2017-01-27 2016-12-31 13F AMERESCO INC CL A COM 02361E108 24,764 -600 -2.37 136 2.26 0.0003
2016-11-08 2016-09-30 13F AMERESCO INC CL A COM 02361E108 25,364 500 2.01 133 22.02 0.0004
2016-08-11 2016-06-30 13F AMERESCO INC CL A COM 02361E108 24,864 -6,120 -19.75 109 -26.35 0.0003
2016-05-02 2016-03-31 13F AMERESCO INC CL A COM 02361E108 30,984 2,820 10.01 148 -15.91 0.0005
2016-02-03 2015-12-31 13F AMERESCO INC CL A COM 02361E108 28,164 1,000 3.68 176 10.00 0.0006
2015-11-04 2015-09-30 13F AMERESCO INC CL A COM 02361E108 27,164 1,438 5.59 160 -18.78 0.0005
2015-08-04 2015-06-30 13F AMERESCO INC CL A COM 02361E108 25,726 -1,520 -5.58 197 -2.48 0.0006
2015-05-12 2015-03-31 13F AMERESCO INC CL A COM 02361E108 27,246 1,300 5.01 202 10.99 0.0006
2015-02-06 2014-12-31 13F AMERESCO INC CL A COM 02361E108 25,946 2,350 9.96 182 12.35 0.0005
2014-11-12 2014-09-30 13F AMERESCO INC CL A COM 02361E108 23,596 0 0.00 162 -2.41 0.0005
2014-08-06 2014-06-30 13F AMERESCO INC CL A COM 02361E108 23,596 -470 -1.95 166 -8.79 0.0005
2014-05-06 2014-03-31 13F AMERESCO INC CL A COM 02361E108 24,066 -960 -3.84 182 -24.79 0.0005
2014-02-03 2013-12-31 13F AMERESCO INC CL A COM 02361E108 25,026 -1,750 -6.54 242 -9.70 0.0007
2013-11-05 2013-09-30 13F AMERESCO INC CL A COM 02361E108 26,776 -169 -0.63 268 10.29 0.0008
2013-08-07 2013-06-30 13F AMERESCO INC CL A COM 02361E108 26,945 26,945 243 0.0008
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.