Ameresco AMRC Insider Ownership

NYSE AMRC

$18.84 -0.66 (-3.36%)

As of: Oct 19, 2026 · 3:59 PM EDT

Insider Holdings by Owner

1.46Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

5.02%

▲+0.173% pp QoQ

Shares Held by Insiders

2.67Mn

filed for Sep 2026

▲+3.56% QoQ

Shares Outstanding

53.07Mn

53,066,211 shares

Direct Holdings

1.43Mn

Indirect: 1.24Mn

Net Shares Traded (QoQ)

+91.70K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the trailing 12 months, AMRC insiders bought $1.91 million worth of shares (81.03K shares) and sold $2.18 million worth (61.52K shares) in open-market trades.

Ameresco's open-market purchases in the past 12 months came from 4 insiders, and its sales from 6 insiders.
Among Ameresco's insiders, Brian C. Cox (Director) was the largest open-market buyer over the past 12 months, purchasing $1.1 million of stock (44.33K shares), most recently on August 21, 2026.
Conversely, Mark Chiplock (EVP, CFO & CAO) was AMRC's largest open-market seller in the past 12 months, with $734,995 of sales (17.55K shares); the latest was on September 15, 2026.
Ameresco's latest insider trade on the open market was a sale of 592 shares for $13,296 by Louis P. Maltezos (Co-President) on September 15, 2026.
In transactions other than open-market trades, Ameresco insiders acquired 119.33K shares through option exercises and conversions over the past 12 months.
Per Business Quant, AMRC insiders together hold 2.67Mn shares based on their latest Form 4 filings, up 3.56% from 2.57Mn shares at the end of Q2 2026 and up 7.75% from 2.47Mn shares at the end of Q3 2025.
By type of ownership, AMRC insiders hold 53.65% of their shares directly (1.43Mn shares) and 46.35% indirectly (1.24Mn shares).
Per Business Quant, 14 insiders of AMRC hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
AMRC's largest insider holders by reported holdings are George P. Sakellaris (Chief Executive Officer, 2.12Mn shares), Joseph W. Sutton (Director, 213.6K shares) and Nicole E. Bulgarino (Co-President, 61.17K shares).
George P. Sakellaris alone accounts for 79.52% of the shares held by Ameresco insiders.
Institutions owned 65.50% of AMRC shares as of Q2 2026; insiders' latest Form 4 filings account for about 5.02%, leaving roughly 29.48% with other investors, including the public.
In the last 12 months, 44 Form 4 filings with transactions in AMRC stock came from 14 insiders.
These insider figures for Ameresco are based on Form 4 filings through September 17, 2026.

Form 4 Holdings

Insiders Holding AMRC

Insiders 17

Shares held 1.46Mn

Of outstanding 2.75%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	George P Sakellaris	Chief Executive Officer	1,019,847	0	1,019,847	69.8%	14 Sep, 2026
2	Joseph W. Sutton	Director	80,246	0	80,246	5.5%	26 Aug, 2026
3	Nicole E Bulgarino	Co President	61,171	0	61,171	4.2%	14 Sep, 2026
4	Brian C Cox	Director	44,325	0	44,325	3.0%	25 Aug, 2026
5	Francis V Jr Wisneski	Director	35,667	0	35,667	2.4%	05 Jun, 2026
6	Jennifer L Miller	Director	34,546	0	34,546	2.4%	26 Aug, 2026
7	Britta Macintosh	Senior Vice President	33,979	0	33,979	2.3%	19 Sep, 2023
8	Louis P Maltezos	Co President	33,628	0	33,628	2.3%	17 Sep, 2026
9	Nickolas Stavropoulos	Director	24,546	0	24,546	1.7%	05 Jun, 2026
10	Charles R. Patton	Director	23,824	0	23,824	1.6%	05 Jun, 2026
11	Claire D'Oyly-Hughes Johnson	Director	20,546	0	20,546	1.4%	05 Jun, 2026
12	Peter Christakis	Chief Operating Officer	15,106	0	15,106	1.0%	14 Sep, 2026
13	Douglas I Foy	Director	14,000	0	14,000	1.0%	10 Mar, 2022
14	Michael T Bakas	President Renewable Fuels	13,634	0	13,634	0.9%	12 Mar, 2026
15	Mark Chiplock	Evp, Cfo Cao	2,815	0	2,815	0.2%	17 Sep, 2026
16	Spencer Doran Hole	Evp And Cfo	1,878	0	1,878	0.1%	14 Aug, 2024
17	David J Corrsin	Evp And General Counsel	0	441	441	0.0%	12 Mar, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,628 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
15 Sep, 2026	Mark Chiplock	Evp, Cfo Cao	Disposed S	476	$22.46	$10.69K	2,815	Direct
15 Sep, 2026	Louis P Maltezos	Co President	Disposed S	592	$22.46	$13.30K	33,628	Direct
10 Sep, 2026	Louis P Maltezos	Co President	Acquired M	2,125	$0.00	$0	34,220	Direct
10 Sep, 2026	Nicole E Bulgarino	Co President	Acquired M	1,875	$0.00	$0	61,171	Direct
10 Sep, 2026	Peter Christakis	Chief Operating Officer	Acquired M	1,750	$0.00	$0	15,106	Direct
10 Sep, 2026	George P Sakellaris	Chief Executive Officer	Acquired M	6,250	$0.00	$0	1,019,847	Direct
10 Sep, 2026	Mark Chiplock	Evp, Cfo Cao	Acquired M	1,625	$0.00	$0	3,291	Direct
10 Sep, 2026	Louis P Maltezos	Co President	Disposed M	2,125	$0.00	$0	4,625	Direct
10 Sep, 2026	Mark Chiplock	Evp, Cfo Cao	Disposed M	1,625	$0.00	$0	3,375	Direct
10 Sep, 2026	Nicole E Bulgarino	Co President	Disposed M	875	$0.00	$0	4,875	Direct
10 Sep, 2026	Peter Christakis	Chief Operating Officer	Disposed M	1,750	$0.00	$0	3,750	Direct
10 Sep, 2026	George P Sakellaris	Chief Executive Officer	Disposed M	6,250	$0.00	$0	11,250	Direct
28 Aug, 2026	George P Sakellaris	Chief Executive Officer	Acquired P	3,000	$22.13	$66.39K	1,013,597	Direct
26 Aug, 2026	George P Sakellaris	Chief Executive Officer	Acquired P	1,000	$21.92	$21.92K	1,006,597	Direct
27 Aug, 2026	George P Sakellaris	Chief Executive Officer	Acquired P	4,000	$22.84	$91.36K	1,010,597	Direct
24 Aug, 2026	Jennifer L Miller	Director	Acquired P	2,000	$20.96	$41.92K	34,546	Direct
24 Aug, 2026	Joseph W. Sutton	Director	Acquired P	9,700	$20.87	$202.44K	80,246	Direct
24 Aug, 2026	George P Sakellaris	Chief Executive Officer	Acquired P	5,000	$20.91	$104.55K	1,000,597	Direct
25 Aug, 2026	George P Sakellaris	Chief Executive Officer	Acquired P	938	$21.60	$20.26K	1,001,535	Direct
25 Aug, 2026	George P Sakellaris	Chief Executive Officer	Acquired P	4,062	$22.03	$89.49K	1,005,597	Direct

Showing 1 to 20 of 1,628 transactions