Insider Stock Trading

Filing Date	T Date	Ticker	Issuer	Inc	Sector	Ind	Industry	Owner	oSt	Rel	Title	#f	T	TVal	Price	Qty	oc	Own	H
5/16/24 17:04	5/14/24	BBCP	Concrete Pumping Holdings, Inc.	DE	Build	BldTrd	Special Trade Contractors	Young Bruce F.	CO	DO	CEO	3	S.dm	-433	7.79	-56		2,276	D
5/16/24 16:09	5/15/24	BLD	Topbuild Corp	DE	Build	BldTrd	Special Trade Contractors	Donikowski Tina	FL	D		2	S	-593	279.75	-2		4	D
5/16/24 11:55	5/15/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Tang Vance W	TX	D		5	S	-4,290	243.45	-18		26	I
5/15/24 16:29	5/13/24	LMB	Limbach Holdings, Inc.	DE	Build	BldTrd	Special Trade Contractors	McNally Michael F	PA	D		1	S	-400	50.16	-8		57	D
5/15/24 16:29	5/13/24	LMB	Limbach Holdings, Inc.	DE	Build	BldTrd	Special Trade Contractors	Young Norbert W.	PA	D		2	S.d	-247	43.55	-6		37	D
5/10/24 16:12	5/9/24	BLD	Topbuild Corp	DE	Build	BldTrd	Special Trade Contractors	Kuhns Robert M	FL	O	VP,CFO	1	S	-220	406.53	-1		16	D
5/10/24 16:12	5/9/24	BLD	Topbuild Corp	DE	Build	BldTrd	Special Trade Contractors	Buck Robert M	FL	DO	P,CEO	5	S.d	-6,719	320.36	-21		78	D
5/9/24 20:33	5/7/24	IESC	Ies Holdings, Inc.	DE	Build	BldTrd	Electrical Work	Simmes Matthew J	TX	O	P,COO	3	S	-2,903	145.15	-20		87	D
5/9/24 10:00	5/7/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Anderson Darcy	TX	D		2	S	-2,410	330.17	-7		44	D
4/25/24 16:15	4/23/24	AGX	Argan Inc	DE	Build	BldTrd	Special Trade Contractors	Koilpillai Mano S	MD	D		1	S	-167	61.79	-3		8	D
4/23/24 16:32	4/19/24	AGX	Argan Inc	DE	Build	BldTrd	Special Trade Contractors	Mitchell W G Champion	NC	D		2	S.dm	-956	60.38	-16		13	I
4/19/24 17:21	4/12/24	AGX	Argan Inc	DE	Build	BldTrd	Special Trade Contractors	Griffin William F Jr	CT	DH	GEMMA, N	1	S.d	-900	59.99	-15		192	I
4/19/24 16:15	4/19/24	AGX	Argan Inc	DE	Build	BldTrd	Special Trade Contractors	Deily Richard H	MD	O	CFO,SVP	1	S	-383	61.15	-6		8	D
3/27/24 19:27	3/27/24	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Wayne Donald	TX	O	EVP,GC	7	S.m	-10,648	183.31	-58		51	D
3/25/24 16:40	3/22/24	MTRX	Matrix Service Co	DE	Build	BldTrd	Special Trade Contractors	Durkin Kevin A	OK	O	VP Chief	2	S	-101	12.93	-8		76	D
3/21/24 15:37	3/20/24	MTRX	Matrix Service Co	DE	Build	BldTrd	Special Trade Contractors	Hewitt John R	OK	DO	P,CEO	2	S	-223	12.71	-18		488	D
3/19/24 18:42	3/19/24	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Chiplock Mark	MA	O	SVP,CAO	2	S.d	-7	32.25	0		0	D
3/19/24 18:42	3/19/24	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Hole Spencer Doran	MA	O	EVP,CFO	6	S.d	-878	43.47	-20		2	D
3/19/24 18:41	3/19/24	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Maltezos Louis P	MA	O	EVP	2	S.d	-5	32.23	0		30	D
3/19/24 18:40	3/19/24	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Corrsin David J	MA	DO	EVP,GC	2	S.d	-7	32.18	0		0	M
3/19/24 18:40	3/19/24	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Christakis Peter	MA	O	EVP	2	S.d	-7	32.23	0		11	D
3/19/24 18:40	3/19/24	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Bakas Michael T	MA	O	EVP	2	S.d	-7	32.23	0		11	D
3/13/24 10:30	3/11/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Skidmore Constance Ellen	TX	D		5	S	-2,952	196.80	-15		25	D
3/12/24 16:02	3/12/24	EME	Emcor Group, Inc.	DE	Build	BldTrd	Electrical Work	Guzzi Anthony	CT	DO	CB,P,CEO	9	S.a	-10,596	188.82	-56		285	D
3/8/24 17:23	3/7/24	IESC	Ies Holdings, Inc.	DE	Build	BldTrd	Electrical Work	McLauchlin Tracy	TX	O	SVP,CFO,	4	S	-1,566	62.62	-25		77	D
3/7/24 17:51	3/5/24	IESC	Ies Holdings, Inc.	DE	Build	BldTrd	Electrical Work	Cleveland Todd M	IN	D		3	S.m	-4,622	103.52	-45		148	D
3/7/24 16:44	3/5/24	APG	Api Group Corp	D8	Build	BldTrd	Special Trade Contractors	Viking Global Investors LP	CT	T		4	S	-615,045	32.24	-19,077		27,072	I
3/6/24 18:30	3/4/24	APG	Api Group Corp	D8	Build	BldTrd	Special Trade Contractors	Lillie James E	MN	D		4	S.dm	-17,887	28.62	-625		6,599	I
3/6/24 18:30	3/4/24	APG	Api Group Corp	D8	Build	BldTrd	Special Trade Contractors	Ashken Ian G H	MN	D		4	S.dm	-18,847	29.00	-650		6,209	I
3/5/24 20:35	3/1/24	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Shannon Margaret B	TX	D		1	S.d	-2,043	239.92	-9		34	D
3/5/24 17:15	3/4/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Bulls Herman E	TX	D		1	S	-1,120	319.95	-4		44	D
3/4/24 17:30	3/1/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Lane Brian E.	TX	DO	P,CEO	2	S.m	-12,308	219.79	-56		244	D
3/4/24 16:38	3/1/24	BLD	Topbuild Corp	DE	Build	BldTrd	Special Trade Contractors	Raia Steven P	FL	O	P,Sp Ops	7	S.d	-4,997	288.62	-17		15	D
3/4/24 16:31	3/1/24	BLD	Topbuild Corp	DE	Build	BldTrd	Special Trade Contractors	Franklin Robert Jeffrey	FL	O	P,Specia	6	S.d	-1,774	269.39	-7		19	D
2/29/24 18:37	2/27/24	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Jensen Derrick A	TX	O	EVP - Bu	2	S	-21,319	179.90	-119		282	D
2/29/24 18:35	2/27/24	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Foster Vincent D	TX	D		1	S.d	-4,176	238.61	-18		178	D
2/29/24 18:32	2/27/24	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Fried Bernard	TX	D		2	S.d	-2,385	198.78	-12		24	D
2/29/24 18:30	2/28/24	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Jackman Worthing	TX	D		1	S.d	-2,272	237.31	-10		7	D
2/28/24 19:29	2/27/24	APG	Api Group Corp	D8	Build	BldTrd	Special Trade Contractors	Krumm Kevin	MN	O	EVP,CFO	1	S.d	-199	35.72	-6		35	D
2/28/24 07:30	2/26/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Trent T McKenna	TX	O	EVP,COO	1	S	-3,951	278.55	-14		23	D
2/28/24 07:30	2/26/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	George William III	TX	O	CFO	1	S	-2,351	278.95	-8		62	D
2/28/24 07:30	2/26/24	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Mercado, Pablo G.	TX	D		1	S	-340	283.17	-1		11	D
2/14/24 17:09	2/12/24	IESC	Ies Holdings, Inc.	DE	Build	BldTrd	Electrical Work	Gendell Jeffrey L Et Al	CT	DOT	CEO	10	S.m	-17,412	87.06	-200		11,594	I
1/24/24 16:15	1/22/24	AGX	Argan Inc	DE	Build	BldTrd	Special Trade Contractors	Bosselmann Rainer H	MD	D		1	S.m	-4,383	43.83	-100		301	D
12/18/23 09:04	12/15/23	BLD	Topbuild Corp	DE	Build	BldTrd	Special Trade Contractors	Machado Luis Francisco	FL	O	VP,Gen.	1	S	-375	374.65	-1		8	D
12/7/23 11:39	12/5/23	MTRX	Matrix Service Co	DE	Build	BldTrd	Special Trade Contractors	Sheets Justin D	OK	O	VP,GC	1	S	-111	10.13	-11		56	D
11/14/23 13:10	11/10/23	MTRX	Matrix Service Co	DE	Build	BldTrd	Special Trade Contractors	Miller James Harry	OK	D		1	S	-35	11.50	-3		79	D
11/13/23 09:00	11/9/23	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Sandbrook William J	TX	D		2	S	-2,332	186.58	-13		18	D
10/12/23 18:04	10/5/23	AGX	Argan Inc	DE	Build	BldTrd	Special Trade Contractors	Flanders Cynthia	MD	D		1	S.d	-322	46.00	-7		17	D
9/19/23 21:23	9/19/23	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Sakellaris George P	MA	DOT	P,CEO	1	S.d	-47	43.51	-1	0	2,049	D
9/19/23 20:17	9/19/23	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Macintosh Britta	MA	O	SVP	1	S.d	-6	43.51	0	0	34	D
9/19/23 20:15	9/18/23	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Bulgarino Nicole E	MA	O	EVP	1	S.d	-5	43.51	0		16	D
9/15/23 17:02	9/14/23	IESC	Ies Holdings, Inc.	DE	Build	BldTrd	Electrical Work	Newman Mary K	TX	O	VP,GC,Co	1	S	-139	69.72	-2		17	D
9/8/23 15:55	9/7/23	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Howell Laura Finley	TX	O	SVP,GC	1	S	-253	187.59	-1		7	D
9/5/23 16:12	8/31/23	AMRC	Ameresco, Inc.	DE	Build	BldTrd	Special Trade Contractors	Wisneski Francis V Jr	MA	D		3	S.dm	-549	45.14	-12		11	D
9/1/23 10:00	8/31/23	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Myers Franklin	TX	DH	Chairman	1	S	-5,546	184.85	-30		120	D
8/16/23 19:22	8/14/23	APG	Api Group Corp	D8	Build	BldTrd	Special Trade Contractors	Fd Juno Holdings L.P.	NY	H	See Rema	1	S	-72,241	27.80	-2,599	-100	0	I
8/10/23 16:15	8/8/23	FIX	Comfort Systems USA Inc		Build	BldTrd	Electrical Work	Shaeff Julie	TX	O	Chief Ac	1	S	-956	180.79	-5		18	D
6/9/23 17:46	6/8/23	IESC	Ies Holdings, Inc.	DE	Build	BldTrd	Electrical Work	Petersen Alison M	TX	O	VP,Chief	2	S.d	-525	51.38	-10		13	D
6/8/23 18:24	6/7/23	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Upperman Dorothy	TX	O	VP Tax	1	S	-749	183.87	-4		13	D
6/5/23 18:44	6/1/23	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Jackman Worthing F	TX	D		1	S.d	-1,328	177.11	-8		17	D
6/2/23 17:59	6/1/23	LMB	Limbach Holdings, Inc.	DE	Build	BldTrd	Special Trade Contractors	Pratt Gordon G	IL	D		1	S.d	-1,500	21.15	-71		360	I
5/16/23 16:13	4/24/23	LMB	Limbach Holdings, Inc.	DE	Build	BldTrd	Special Trade Contractors	Sharp Jay	PA	O	P of Lim	1	S.d	-4	17.52	0	0	53	D
5/15/23 18:33	5/11/23	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Austin Earl C. Jr.	TX	DO	P,CEO	1	S.m	-27,542	172.14	-160		676	D
5/12/23 17:59	5/10/23	PWR	Quanta Services, Inc.	DE	Build	BldTrd	Electrical Work	Probst James Redgie	TX	O	COO	1	S	-8,557	171.13	-50		69	D
5/11/23 16:40	5/10/23	EME	Emcor Group, Inc.	DE	Build	BldTrd	Electrical Work	Matz R Kevin	CT	O	EVP - Sh	1	S	-2,227	165.46	-13		192	D
5/1/23 16:23	4/27/23	EME	Emcor Group, Inc.	DE	Build	BldTrd	Electrical Work	Pompa Mark A	CT	O	EVP,CFO	1	S	-4,250	170.00	-25		59	D
1/18/23 16:28	1/17/23	EME	Emcor Group, Inc.	DE	Build	BldTrd	Electrical Work	Mauricio Maxine Lum	CT	O	EVP,GC	1	S	-374	149.62	-3		26	D

D	Derivative transaction in filing (usually option exercise)
M	Multiple transactions in filing; earliest reported transaction date and weighted average transaction price
A	Amended filing
E	Error detected in filing

S - Sale	Sale of securities on an exchange or to another person
S - Sale+OE	Sale of securities on an exchange or to another person (after option exercise)
F - Tax	Payment of exercise price or tax liability using portion of securities received from the company
P - Purchase	Purchase of securities on an exchange or from another person

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