Ameresco, Inc.
DE ˙ DB ˙ US02361E1082
28,00 € ↓ -0,10 (-0,36%)
2026-06-05
DEL PRIS
SecurityDE:4AM / Ameresco, Inc.
InstitutionGagnon Securities Llc
Latest Disclosed Ownership1,717,344 shares
Ownership 4.90%
Gagnon Securities Llc ownership in 4AM / Ameresco, Inc.

2025-10-24 - Gagnon Securities Llc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,717,344 shares of Ameresco, Inc. (DE:4AM). This represents 4.9 percent ownership of the company. In their previous filing dated 2014-02-06 , Gagnon Securities Llc had reported owning 2,635,200 shares, indicating a decrease of -34.83 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2025-10-24 2025-10-24 13G/A 2,635,200 1,717,344 -34.83 4.90 -48.26
2014-02-06 2014-02-06 13G/A 2,635,200 9.47
2013-02-13 2013-02-13 13G 1,673,852 6.18

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-04-21 2026-03-31 13F AMERESCO CL A 02361E108 840,063 7,179 0.86 21,422 -12.19 4.9449
2026-02-12 2025-12-31 13F AMERESCO CL A 02361E108 832,884 -26,525 -3.09 24,395 -15.47
2025-11-03 2025-09-30 13F AMERESCO CL A 02361E108 859,409 -10,836 -1.25 28,859 118.31 5.7891
2025-07-23 2025-06-30 13F AMERESCO CL A 02361E108 870,245 -98,283 -10.15 13,219 12.99 2.6848
2025-05-09 2025-03-31 13F AMERESCO CL A 02361E108 968,528 397,326 69.56 11,700 -12.77 2.5740
2025-01-24 2024-12-31 13F AMERESCO CL A 02361E108 571,202 104,861 22.49 13,412 -24.20 2.7023
2024-11-12 2024-09-30 13F AMERESCO CL A 02361E108 466,341 107,068 29.80 17,693 70.94 3.5081
2024-08-14 2024-06-30 13F AMERESCO INC CL A CL A 02361E108 359,273 12,621 3.64 10,351 23.74 2.3313
2024-05-13 2024-03-31 13F AMERESCO CL A 02361E108 346,652 -2,876 -0.82 8,365 -24.44 1.9796
2024-02-14 2023-12-31 13F AMERESCO CL A 02361E108 349,528 91,693 35.56 11,070 11.34 2.6572
2023-11-14 2023-09-30 13F AMERESCO CL A 02361E108 257,835 -5,004 -1.90 9,942 -22.21 2.4914
2023-08-08 2023-06-30 13F AMERESCO CL A 02361E108 262,839 -1,825 -0.69 12,782 -1.88 2.6577
2023-04-10 2023-03-31 13F AMERESCO CL A 02361E108 264,664 1,515 0.58 13,027 -13.37 2.7378
2023-02-07 2022-12-31 13F AMERESCO CL A 02361E108 263,149 -3,330 -1.25 15,036 -15.13 3.3197
2022-11-14 2022-09-30 13F AMERESCO CL A 02361E108 266,479 -6,793 -2.49 17,716 42.30 3.8952
2022-08-01 2022-06-30 13F AMERESCO CL A 02361E108 273,272 -2,567 -0.93 12,450 -43.23 2.6096
2022-05-09 2022-03-31 13F AMERESCO CL A 02361E108 275,839 -3,284 -1.18 21,929 -3.53 3.5763
2022-02-08 2021-12-31 13F AMERESCO CL A 02361E108 279,123 -92,531 -24.90 22,732 4.68 3.4091
2021-11-12 2021-09-30 13F AMERESCO CL A 02361E108 371,654 -114,198 -23.50 21,716 -28.74 3.2262
2021-07-28 2021-06-30 13F AMERESCO CL A 02361E108 485,852 -56,624 -10.44 30,473 15.51 4.3266
2021-05-14 2021-03-31 13F AMERESCO CL A 02361E108 542,476 -64,392 -10.61 26,381 -16.79 4.0172
2021-02-12 2020-12-31 13F AMERESCO CL A 02361E108 606,868 -25,404 -4.02 31,703 50.12 5.0472
2020-11-12 2020-09-30 13F AMERESCO CL A 02361E108 632,272 -69,795 -9.94 21,118 8.28 4.5030
2020-08-13 2020-06-30 13F AMERESCO CL A 02361E108 702,067 -101,308 -12.61 19,503 42.56 4.7227
2020-05-11 2020-03-31 13F AMERESCO CL A 02361E108 803,375 -104,666 -11.53 13,681 -13.91 4.6482
2020-02-14 2019-12-31 13F AMERESCO CL A 02361E108 908,041 16,779 1.88 15,891 10.95 3.4783
2019-11-08 2019-09-30 13F AMERESCO CL A 02361E108 891,262 -12,396 -1.37 14,323 7.60 3.3892
2019-08-12 2019-06-30 13F AMERESCO CL A 02361E108 903,658 -3,711 -0.41 13,311 -9.33 2.8701
2019-05-13 2019-03-31 13F AMERESCO CL A 02361E108 907,369 -17,925 -1.94 14,681 12.52 3.2008
2019-01-18 2018-12-31 13F AMERESCO CL A 02361E108 925,294 -87,391 -8.63 13,047 -5.61 3.4699
2018-11-13 2018-09-30 13F AMERESCO CL A 02361E108 1,012,685 28,450 2.89 13,823 17.03 3.1768
2018-08-09 2018-06-30 13F AMERESCO CL A 02361E108 984,235 52,524 5.64 11,811 -2.49 3.4067
2018-05-09 2018-03-31 13F AMERESCO CL A 02361E108 931,711 -118,434 -11.28 12,112 34.12 4.3117
2018-02-13 2017-12-31 13F AMERESCO CL A 02361E108 1,050,145 -33,145 -3.06 9,031 6.88 3.2047
2017-11-14 2017-09-30 13F/A-1 AMERESCO CL A 02361E108 1,083,290 -23,585 -2.13 8,450 -0.86 3.1412
2017-11-14 2017-09-30 13F AMERESCO CL A 02361E108 1,083,290 8,450
2017-07-20 2017-06-30 13F AMERESCO CL A 02361E108 1,106,875 -9,727 -0.87 8,523 16.53 2.3644
2017-05-11 2017-03-31 13F AMERESCO CL A 02361E108 1,116,602 -15,281 -1.35 7,314 17.49 3.1638
2017-02-14 2016-12-31 13F AMERESCO CL A 02361E108 1,131,883 -233,124 -17.08 6,225 -13.30 2.6700
2016-11-14 2016-09-30 13F AMERESCO CL A 02361E108 1,365,007 -71,957 -5.01 7,180 14.33 3.0553
2016-08-24 2016-06-30 13F/A-1 AMERESCO CL A 02361E108 1,436,964 30,034 2.13 6,280 -6.42 2.9297
2016-08-10 2016-06-30 13F AMERESCO CL A 02361E108 1,436,964 6,280
2016-05-03 2016-03-31 13F AMERESCO CL A 02361E108 1,406,930 187,285 15.36 6,711 -11.96 3.2128
2016-02-16 2015-12-31 13F AMERESCO CL A 02361E108 1,219,645 -110,673 -8.32 7,623 -2.54 3.4910
2015-10-16 2015-09-30 13F AMERESCO CL A 02361E108 1,330,318 103,207 8.41 7,822 -16.67 3.8263
2015-07-24 2015-06-30 13F AMERESCO CL A 02361E108 1,227,111 -71,209 -5.48 9,387 -2.30 3.7139
2015-05-12 2015-03-31 13F AMERESCO INC CL A CL A 02361E108 1,298,320 -14,297 -1.09 9,608 4.57 3.1875
2015-02-13 2014-12-31 13F AMERESCO INC CL A CL A 02361E108 1,312,617 -22,059 -1.65 9,188 0.49 2.9457
2014-10-15 2014-09-30 13F AMERESCO INC CL A CL A 02361E108 1,334,676 4,407 0.33 9,143 -2.23 3.0544
2014-07-31 2014-06-30 13F AMERESCO INC CL A COM 02361E108 1,330,269 1,892 0.14 9,352 -6.88 3.0271
2014-05-06 2014-03-31 13F AMERESCO INC CL A COM 02361E108 1,328,377 -1,528 -0.11 10,043 -21.83 2.9836
2014-02-06 2013-12-31 13F/A-1 AMERESCO INC CL A COM 02361E108 1,329,905 4,457 0.34 12,847 -3.27 3.8573
2014-01-14 2013-12-31 13F AMERESCO INC CL A COM 02361E108 1,329,905 12,847
2013-10-18 2013-09-30 13F AMERESCO INC CL A COM 02361E108 1,325,448 1,325,448 13,281 4.1411
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.