Industrial & Commercial Fans & Blowers & Air Purifing Equip Industry - Insider Stock Trading

Filing Date	T Date	Ticker	Issuer	Inc	Sector	Ind	Industry	Owner	oSt	Rel	Title	T	TVal	Price	Qty	oc	Own	H
11/20/24 16:02	11/19/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Jones Sharon L	IL	D		P	9	1.08	8	9	97	D
11/19/24 16:03	11/15/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Jones Sharon L	IL	D		P.m	15	1.05	14	19	89	D
11/18/24 06:13	11/12/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Jones Sharon L	IL	D		P.m	27	1.04	26	53	75	D
10/9/24 11:35	10/7/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	P	S.m	-498	73.27	-7	-19	28	D
10/8/24 14:09	10/4/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	77	28.43	3	11	28	D
10/8/24 14:09	10/4/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-198	73.37	-3	-9	28	D
10/3/24 15:04	10/1/24	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	TX	D		S	-16	12.76	-1	-4	31	D
10/3/24 15:01	10/1/24	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	TX	D		S	-16	12.76	-1	-4	31	D
10/3/24 14:44	10/1/24	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	TX	D		S	-19	12.76	-1	-3	40	D
9/30/24 10:41	9/27/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	M.d	4,610	55.14	84		40	D
9/30/24 10:41	9/27/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	S.d	-6,190	74.04	-84	-68	40	D
9/24/24 10:39	9/20/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.dm	2,011	36.57	55	25	279	D
9/24/24 10:39	9/20/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	S.dm	-3,994	72.62	-55	-16	279	D
9/23/24 12:13	9/19/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	GC	M.d	562	38.78	15	39	51	D
9/23/24 12:13	9/19/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	GC	S.d	-1,057	72.89	-15	-22	51	D
9/19/24 14:50	9/17/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Owens James	MN	D		M.dm	539	38.47	14	370	18	D
9/19/24 14:50	9/17/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Owens James	MN	D		S.dm	-1,010	72.17	-14	-44	18	D
9/16/24 06:08	9/12/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Albrecht Ellen T	IL	O	CFO	P	5	1.01	5	6	92	D
9/16/24 06:06	9/12/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Arnone Vincent J	IL	DO	P,CEO	P	20	1.02	20	5	461	D
9/5/24 13:18	9/3/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Briseno Guillermo	MN	O	P	M.d	465	38.78	12	120	22	D
9/3/24 11:54	8/30/24	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	288	28.77	10	4	268	I
8/30/24 16:04	8/28/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Jones Sharon L	IL	D		P	3	1.01	3	7	49	D
8/21/24 16:06	8/12/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Jones Sharon L	IL	D		P	0	1.01	0	1	45	D
8/12/24 07:23	8/9/24	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Arnone Vincent J	IL	DO	P,CEO	P	21	1.04	20	5	441	D
7/12/24 10:30	7/9/24	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	TX	D		S	-10	8.11	-1	-5	23	D
7/12/24 10:29	7/9/24	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	TX	D		S	-10	8.11	-1	-5	23	D
7/3/24 10:25	7/2/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	M.d	1,708	45.43	38	999%	40	D
7/3/24 10:25	7/2/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	S.d	-2,668	70.97	-38	-49	40	D
6/17/24 12:50	6/14/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Lewis Richard Brent	MN	O	P	M.d	116	38.78	3	12	28	D
5/22/24 16:31	5/21/24	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P.a	98	24.50	4	2	257	D
5/22/24 11:44	5/21/24	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	98	24.50	4	2	257	D
5/2/24 08:12	5/1/24	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	110	21.95	5	2	244	D
3/21/24 15:15	3/20/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	173	38.47	5	19	28	D
3/21/24 15:15	3/20/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-331	73.54	-5	-14	28	D
3/19/24 16:19	3/18/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	M.d	1,581	42.72	37	999%	40	D
3/19/24 16:19	3/18/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	S.dm	-2,711	73.27	-37	-48	40	D
3/18/24 14:24	3/15/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Kramer Sheila G.	MN	O	CHRO	M.d	1,749	38.44	46		25	D
3/18/24 14:24	3/15/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Kramer Sheila G.	MN	O	CHRO	S.d	-3,345	73.52	-46	-65	25	D
3/8/24 14:26	3/7/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		M.d	532	28.43	19	80	42	D
3/8/24 14:26	3/7/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.d	-1,375	73.51	-19	-31	42	D
3/8/24 09:29	3/6/24	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Siegel Laurie	TX	D		P	50	19.87	3	46	8	D
3/8/24 09:28	3/6/24	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	989	19.78	50	27	238	D
3/5/24 16:30	3/4/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Dahlgren Andrew C	MN	O	P	M.d	97	38.78	3	16	18	D
3/5/24 15:06	3/1/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	P	S.m	-767	71.66	-11	-24	34	I
3/4/24 16:43	3/1/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		M.d	539	38.47	14	50	42	D
3/4/24 16:43	3/1/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.d	-1,011	72.23	-14	-25	42	D
3/4/24 16:26	2/29/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	173	38.47	5	19	28	D
3/4/24 16:26	2/29/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-317	70.41	-5	-14	28	D
1/4/24 14:56	1/3/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.d	2,948	39.83	74	36	279	D
1/4/24 14:47	1/2/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	192	38.47	5	22	28	D
1/4/24 14:47	1/2/24	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-325	64.99	-5	-15	28	D
12/26/23 09:28	12/21/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Gleason Todd R	TX	DO	CEO	S.d	-306	21.11	-15	-7	187	D
12/22/23 13:24	12/20/23	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	TX	D		S	-19	7.91	-2	-9	25	D
12/22/23 13:23	12/20/23	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	TX	D		S	-19	7.91	-2	-9	25	D
12/12/23 10:53	12/11/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.d	-710	62.24	-11	-22	41	D
12/7/23 13:59	12/6/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Briseno Guillermo	MN	O	P	M.d	168	42.05	4	33	16	D
12/7/23 13:59	12/6/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Briseno Guillermo	MN	O	P	S.d	-168	61.50	-3	-14	16	D
12/1/23 16:19	11/30/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Owens James	MN	D		M.d	491	43.07	11	283	15	D
12/1/23 16:19	11/30/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Owens James	MN	D		S.dm	-694	60.89	-11	-43	15	D
10/12/23 13:54	10/10/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Dahlgren Andrew C	MN	O	P	M.d	105	42.05	3	17	17	D
10/10/23 16:57	10/6/23	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	TX	D		P	11	7.50	2	5	32	D
9/28/23 17:21	9/26/23	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	TX	D		P	9	7.90	1	4	31	D
9/22/23 17:06	9/20/23	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	McNally Robert Joseph	TX	D		P	50	8.36	6	42	20	D
9/19/23 07:55	9/18/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	160	15.99	10	6	185	D
9/11/23 10:14	9/7/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	165	13.76	12	7	175	I
9/7/23 11:16	9/5/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Lewis Richard Brent	MN	O	P	M.d	126	42.05	3	22	17	D
8/31/23 15:26	8/30/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Milroy Douglas A.	MN	D		M.d	977	37.13	26	183	41	D
8/31/23 15:26	8/30/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Milroy Douglas A.	MN	D		S.d	-1,682	63.95	-26	-39	41	D
8/31/23 15:24	8/30/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	GC	M.d	126	42.05	3	7	45	D
8/31/23 15:24	8/30/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	GC	S.d	-192	63.84	-3	-6	45	D
8/14/23 16:02	8/11/23	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Arnone Vincent J	IL	DO	P,CEO	P	18	1.20	15	5	345	D
7/5/23 10:53	7/3/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	M.d	672	28.00	24	428	30	D
7/5/23 10:53	7/3/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	CFO	S.d	-1,499	62.44	-24	-45	30	D
4/12/23 11:43	4/11/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Hilger Christopher M.	MN	D		P	200	62.76	3	68	8	D
3/29/23 11:23	3/28/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Gohr Paul M	TX	O	Chief Ac	S	-171	14.41	-12	-19	49	D
3/17/23 07:58	3/15/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Liner David B	TX	D		P	41	13.62	3	3	118	D
3/13/23 15:42	3/10/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	S	-179	14.75	-12	-16	63	D
3/8/23 14:30	3/7/23	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	151	15.08	10	7	153	I
3/3/23 11:52	3/2/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Owens James	MN	D		M.d	383	35.47	11	302	14	D
3/3/23 11:52	3/2/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Owens James	MN	D		S.d	-714	66.08	-11	-43	14	D
3/3/23 11:51	3/2/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	362	43.07	8	48	26	D
3/3/23 11:51	3/2/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-551	65.64	-8	-25	26	D
1/11/23 16:46	1/11/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	P	S	-275	61.00	-5	-11	37	D
1/5/23 15:36	1/4/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	129	43.07	3	13	26	D
1/5/23 15:36	1/4/23	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-177	58.96	-3	-10	26	D
1/3/23 14:58	12/29/22	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Gleason Todd R	TX	DO	CEO	S	-127	11.59	-11	-6	180	D
12/14/22 17:06	12/13/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		M.d	236	34.11	7	22	39	D
12/14/22 17:06	12/13/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.d	-417	60.39	-7	-15	39	D
12/5/22 14:44	12/2/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	P	M.d	1,450	39.73	37	763	41	D
12/5/22 14:44	12/2/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	P	S.d	-640	60.95	-11	-20	41	D
12/5/22 14:37	12/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		M.dm	255	34.11	7	24	39	D
12/5/22 14:37	12/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.dm	-457	61.06	-7	-16	39	D
12/5/22 14:36	12/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Dahlgren Andrew C	MN	O	P	M.d	118	33.58	4	34	14	D
12/5/22 14:36	12/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Dahlgren Andrew C	MN	O	P	S.d	-148	60.85	-2	-15	14	D
12/5/22 14:34	12/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.d	1,811	37.74	48	27	224	D
12/5/22 14:32	12/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	GC	S.d	-213	60.72	-4	-7	45	D
11/21/22 10:03	11/18/22	CECO	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	P	3	11.25	0	0	75	D
11/17/22 18:02	11/16/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	TX	D		S	-12	9.30	-1	-6	20	D
11/17/22 17:15	11/16/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	TX	D		S	-12	9.30	-1	-6	21	D
11/17/22 12:00	11/16/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	TX	D		S	-12	9.30	-1	-6	20	D
10/14/22 16:31	10/13/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	M.d	235	33.58	7	24	37	D
10/14/22 16:31	10/13/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	S.d	-362	51.67	-7	-16	37	D
10/3/22 17:23	9/29/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Vermeersch Wim	MN	O	VP	S.m	-1,494	49.79	-30	-87	5	D
9/22/22 13:33	9/20/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Liner David B	TX	D		P.m	142	9.47	15	15	115	D
9/13/22 14:35	9/9/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Lewis Richard Brent	MN	O	SVP	M.d	118	33.58	4	55	10	D
9/2/22 11:49	9/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	246	34.11	7	42	24	D
9/2/22 11:49	9/1/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-370	51.35	-7	-23	24	D
8/25/22 09:53	8/24/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	P	3	10.33	0	0	75	D
8/18/22 10:57	8/17/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	IL	D		S	-12	8.99	-1	-6	23	D
8/18/22 10:55	8/17/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	IL	D		S	-12	9.01	-1	-6	21	D
8/18/22 10:53	8/17/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	IL	D		S	-12	8.99	-1	-6	21	D
8/10/22 16:49	8/9/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P	179	8.97	20	16	143	I
6/3/22 13:29	6/2/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	246	34.11	7	43	24	D
6/3/22 13:29	6/2/22	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-382	53.09	-7	-23	24	D
5/19/22 16:30	5/17/22	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Arnone Vincent J	IL	DO	P,CEO	P	24	1.20	20	6	330	D
5/12/22 17:47	5/11/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	P	3	5.36	1	1	75	D
3/28/22 16:15	3/24/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Gleason Todd R	TX	DO	CEO	P	10	5.56	2	1	191	D
3/23/22 17:05	3/21/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P.m	174	5.79	30	37	111	D
3/17/22 15:20	3/15/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	P	3	5.37	1	1	74	D
3/17/22 15:15	3/15/22	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Eckl Matthew	TX	O	CFO	P	10	5.48	2	1	190	D
1/7/22 16:07	1/5/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Barrie David S	IL	D		M.dm	22	5.55	4	23	22	D
1/7/22 16:07	1/5/22	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Barrie David S	IL	D		S.d	-26	8.64	-3	-12	22	D
12/30/21 10:38	12/29/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Keller Peter Joseph	MN	O	Corporat	M.d	100	49.76	2	722	2	D
12/30/21 10:38	12/29/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Keller Peter Joseph	MN	O	Corporat	S.d	-118	59.01	-2	-47	2	D
12/29/21 10:36	12/28/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		M.d	493	34.21	14	63	37	D
12/29/21 10:36	12/28/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.d	-494	58.59	-8	-18	37	D
12/22/21 16:38	12/20/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P.m	89	5.96	15	23	81	D
12/20/21 13:34	12/17/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	S	-1	58.12	0	0	34	D
12/13/21 19:08	12/9/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Wallman Richard F	TX	D		P.m	183	6.10	30	84	66	M
12/6/21 11:49	12/3/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	M.d	140	34.88	4	13	34	D
12/6/21 11:49	12/3/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	S.d	-221	55.24	-4	-11	34	D
12/6/21 11:47	12/3/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	VP	M.d	209	34.88	6	16	43	D
11/19/21 10:18	11/17/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	IL	D		S	-13	8.30	-2	-9	16	D
11/18/21 16:49	11/17/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	IL	D		S	-15	8.30	-2	-10	16	D
11/18/21 13:43	11/17/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Barrie David S	IL	D		S	-15	8.30	-2	-8	21	D
11/18/21 13:00	11/17/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	IL	D		S	-15	8.31	-2	-10	16	D
11/12/21 21:38	11/10/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	P.a	4	7.04	1	1	45	D
11/12/21 16:17	11/10/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Henry Chasity	TX	O	COO	P	4	7.04	1	1	45	D
8/19/21 13:27	8/18/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Walker Jerome T.	IL	D		S	-10	6.63	-2	-8	18	D
8/19/21 13:26	8/18/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Boiter Cynthia	IL	D		S	-12	6.58	-2	-9	17	D
8/19/21 13:24	8/18/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Brown David B	IL	D		S	-12	6.61	-2	-9	17	D
8/19/21 13:23	8/18/21	PPIH	Perma-Pipe International Holdings, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Barrie David S	IL	D		S	-12	6.68	-2	-7	22	D
8/5/21 17:00	8/5/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Pollack Jonathan	TX	D		P	52	6.88	8	4	199	D
7/15/21 18:18	7/14/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Vermeersch Wim	MN	O	VP	M.d	470	33.58	14	70	34	D
6/23/21 10:37	6/22/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Wiehoff John	MN	D		M.d	493	34.21	14	32	59	D
6/23/21 10:37	6/22/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Wiehoff John	MN	D		S.d	-892	61.94	-14	-20	59	D
6/16/21 16:31	6/15/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Lewis Richard Brent	MN	O	SVP	M.d	140	34.88	4	43	13	D
6/7/21 13:09	6/4/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	342	34.21	10	82	22	D
6/7/21 13:09	6/4/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-642	64.20	-10	-31	22	D
6/4/21 12:27	6/3/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Hoffman Michael J	MN	D		M.d	493	34.21	14	29	64	D
6/4/21 12:27	6/3/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Hoffman Michael J	MN	D		S.d	-917	63.71	-14	-18	64	D
5/11/21 17:26	5/7/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Eckl Matthew	TX	O	CFO	P	10	7.20	1	1	163	D
5/11/21 16:41	5/11/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Liner David B	TX	D		P	15	7.25	2	3	78	D
5/10/21 16:49	5/7/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Nuggihalli Ramesh	TX	O	COO	P	9	7.20	1	3	44	D
3/16/21 16:31	3/15/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.d	746	34.88	21	12	201	D
3/16/21 16:31	3/15/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	S.d	-1,315	61.45	-21	-10	201	D
3/15/21 14:33	3/12/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.d	17	34.88	1	0	201	D
3/15/21 14:33	3/12/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	S.d	-31	61.51	-1	0	201	D
3/12/21 15:00	3/11/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.d	73	34.88	2	1	201	D
3/12/21 15:00	3/11/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	S.d	-129	61.59	-2	-1	201	D
3/5/21 17:10	3/4/21	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Pollack Jonathan	TX	D		M.d	13	6.66	2	1	180	D
3/2/21 13:52	3/1/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	151	34.21	4	25	22	D
3/2/21 13:52	3/1/21	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-265	60.20	-4	-17	22	D
1/4/21 15:09	12/31/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Bailey Bettye J	CT	T		S	-171	4.01	-43	-1	4,244	D
12/29/20 16:31	12/23/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Zeitler Dennis L	IL	D		M.d	85	1.20	71		63	D
12/29/20 16:31	12/23/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Zeitler Dennis L	IL	D		S.d	-349	4.92	-71	-53	63	D
12/28/20 17:01	12/22/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Arnone Vincent J	IL	DO	P,CEO	S.m	-907	4.53	-200	-39	310	D
12/28/20 17:00	12/22/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Albrecht Ellen T	IL	O	Acting P	S.m	-337	4.69	-72	-65	39	D
12/7/20 14:56	12/4/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	M.d	29	29.07	1	3	33	D
12/7/20 14:56	12/4/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	S.d	-54	54.41	-1	-3	33	D
12/7/20 14:56	12/4/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	VP	M.d	174	29.07	6	17	42	D
12/4/20 16:50	12/2/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Markowsky James J	IL	D		S	-170	3.40	-50	-100	0	D
11/30/20 14:20	11/25/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Bailey Bettye J	CT	T		S	-199	4.74	-42	-1	4,287	D
11/27/20 14:32	11/24/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Bailey Douglas G	IL	D		S.m	-774	5.63	-137	-7	1,788	D
11/27/20 14:32	11/24/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Markowsky James J	IL	D		M.d	42	0.9650	44	733	50	D
11/27/20 14:32	11/24/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Markowsky James J	IL	D		S.d	-325	5.74	-57	-53	50	D
11/10/20 06:05	11/6/20	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Liner David B	TX	D		P	33	6.02	6	8	76	D
10/13/20 09:02	10/9/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Hoffman Michael J	MN	D		M.d	425	29.50	14	30	62	D
10/8/20 11:06	10/6/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	M.d	436	29.07	15	8	201	D
10/6/20 17:50	10/2/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		M.d	425	29.50	14	27	68	D
10/6/20 17:50	10/2/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Rajendra Ajita G	MN	D		S.d	-425	47.97	-9	-12	68	D
9/28/20 17:00	9/25/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Cummings William E Jr	IL	O	SVP,Sale	P	4	0.7197	5	2	292	D
9/24/20 17:56	9/24/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Cummings William E Jr	IL	O	SVP,Sale	P	22	0.6412	34	13	287	D
8/14/20 08:00	8/13/20	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Liner David B	TX	D		P	43	8.65	5	8	70	D
8/11/20 08:00	8/10/20	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Pollack Jonathan	TX	D		P	25	8.34	3	2	178	I
8/10/20 09:08	8/6/20	CECE	Ceco Environmental Corp	DE	Machn	Mchn	Industrial & Commercial Fans	Dezwirek Jason	A6	DT		P.m	279	7.76	36	1	4,262	I
6/9/20 11:19	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Wiehoff John	MN	D		M.d	425	29.50	14	35	56	D
6/9/20 11:19	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Wiehoff John	MN	D		S.d	-735	51.03	-14	-20	56	D
6/9/20 11:18	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		M.d	425	29.50	14	232	21	D
6/9/20 11:18	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Oberton Willard D	MN	D		S.d	-735	51.04	-14	-41	21	D
6/9/20 11:17	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	S	-64	50.97	-1	-4	30	D
6/9/20 11:16	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Carpenter Tod E.	MN	DO	CB,P,CEO	S	-514	51.36	-10	-5	176	D
6/9/20 11:16	6/8/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	VP	S	-136	51.64	-3	-7	37	D
6/5/20 13:14	6/4/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Lewis Richard Brent	MN	O	SVP	M.d	87	29.07	3	38	11	D
3/18/20 16:39	3/17/20	FTEK	Fuel Tech, Inc.	DE	Machn	Mchn	Industrial & Commercial Fans	Arnone Vincent J	IL	DO	P,CEO	P	6	0.4312	15	3	524	D
3/10/20 12:07	3/9/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Spethmann Jeffrey E	MN	O	SVP	S	-166	46.02	-4	-13	25	D
3/10/20 12:06	3/9/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Scalf Thomas R	MN	O	SVP	S	-112	44.93	-3	-8	31	D
3/10/20 12:05	3/9/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Robinson Scott J.	MN	O	SVP	S	-162	40.56	-4	-14	24	D
1/6/20 13:47	1/2/20	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Becker Amy C	MN	O	VP	M.d	127	21.14	6	18	39	D
12/6/19 14:57	12/6/19	DCI	Donaldson Co Inc	DE	Machn	Mchn	Industrial & Commercial Fans	Hoffman Michael J	MN	D		M.d	309	21.44	14	45	46	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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