United States Professional & Commercial Services

Fuel Tech Inc (FTEK)

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The most recent insider trading activity occurred on March 6, 2026, with a BUY transaction by the President & CEO. Prior to this, significant BUY transactions were noted in November 2024 and August 2024 by an executive and a director. The total number of insider transactions in the last 90 days is zero.
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Ticker: FTEK Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
ARNONE VINCENT J
President & CEO
1 purchase — total 12,400 USD
Buy 6 Mar 2026
Value US$3,249,017.24 | Price 161.09 | Shares 48,555
Sale 4 Jun 2025
Value US$2,910,503.45 | Price 415.33 | Shares 52,497
Proposed sale 4 Jun 2025
Value US$21,042.90 | Price 1.67 | Shares 12,627
Buy 28 Mar 2025
Value US$15,750.00 | Price 1.05 | Shares 15,000
Buy 19 Nov 2024
Value US$8,655.55 | Price 1.08 | Shares 8,014
Buy 18 Nov 2024
Value US$10,290.00 | Price 1.05 | Shares 9,800
Buy 15 Nov 2024
Value US$4,410.00 | Price 1.05 | Shares 4,200
Buy 14 Nov 2024
Value US$7,488.00 | Price 1.04 | Shares 7,200
Buy 13 Nov 2024
Value US$9,555.00 | Price 1.05 | Shares 9,100
Buy 12 Nov 2024
Value US$9,690.00 | Price 1.02 | Shares 9,500
Buy 12 Sep 2024
Value US$20,400.00 | Price 1.02 | Shares 20,000
Buy 12 Sep 2024
Value US$5,050.00 | Price 1.01 | Shares 5,000
Buy 28 Aug 2024
Value US$3,309.46 | Price 1.01 | Shares 3,293
Buy 12 Aug 2024
Value US$449.40 | Price 1.01 | Shares 447
Buy 9 Aug 2024
Value US$20,896.00 | Price 1.04 | Shares 20,000
Buy 11 Aug 2023
Value US$17,985.00 | Price 1.20 | Shares 15,000
Buy 17 May 2022
Value US$23,998.00 | Price 1.20 | Shares 20,000
Sale 31 Dec 2020
Value US$171,288.19 | Price 4.01 | Shares 42,711
Sale 23 Dec 2020
Value US$349,178.00 | Price 4.92 | Shares 71,000
Sale 23 Dec 2020
Value US$209,500.00 | Price 5.00 | Shares 41,900
Sale 23 Dec 2020
Value US$375,975.00 | Price 5.01 | Shares 75,000
Sale 22 Dec 2020
Value US$531,000.00 | Price 4.25 | Shares 125,000
Sale 22 Dec 2020
Value US$127,800.00 | Price 4.26 | Shares 30,000
Sale 2 Dec 2020
Value US$101,100.00 | Price 3.37 | Shares 30,000
Sale 2 Dec 2020
Value US$68,800.00 | Price 3.44 | Shares 20,000
Sale 25 Nov 2020
Value US$199,208.52 | Price 4.74 | Shares 42,028
Sale 25 Nov 2020
Value US$324,650.00 | Price 5.38 | Shares 60,400
Sale 24 Nov 2020
Value US$248,160.00 | Price 5.64 | Shares 44,000
Sale 24 Nov 2020
Value US$77,024.70 | Price 6.10 | Shares 12,627
Sale 24 Nov 2020
Value US$449,276.02 | Price 5.84 | Shares 76,944
Buy 25 Sep 2020
Value US$3,835.28 | Price 0.72 | Shares 5,329
Buy 24 Sep 2020
Value US$21,727.70 | Price 0.64 | Shares 33,886
Buy 17 Mar 2020
Value US$6,468.00 | Price 0.43 | Shares 15,000
Buy 26 Sep 2019
Value US$27,546.01 | Price 0.97 | Shares 28,489
Buy 25 Sep 2019
Value US$20,616.14 | Price 0.96 | Shares 21,511
Buy 6 Sep 2019
Value US$20,140.00 | Price 1.01 | Shares 20,000
Buy 28 Aug 2019
Value US$16,440.00 | Price 0.82 | Shares 20,000
Buy 18 Jun 2019
Value US$18,225.00 | Price 1.22 | Shares 15,000
Sale 22 May 2019
Value US$10,562.86 | Price 1.54 | Shares 6,859
Sale 22 Mar 2019
Value US$33,200.00 | Price 1.66 | Shares 20,000
Buy 23 Aug 2018
Value US$4,108.00 | Price 1.04 | Shares 3,950
Buy 23 Aug 2018
Value US$2,195.64 | Price 1.08 | Shares 2,033
Buy 22 Aug 2018
Value US$23,472.27 | Price 1.02 | Shares 22,967
Buy 29 Jun 2018
Value US$11,005.80 | Price 1.08 | Shares 10,200
Buy 12 Dec 2017
Value US$50,320.00 | Price 1.01 | Shares 50,000
Buy 15 Sep 2017
Value US$16,902.00 | Price 0.94 | Shares 18,000
Buy 14 Sep 2017
Value US$29,568.00 | Price 0.92 | Shares 32,000
Buy 5 Sep 2017
Value US$8,650.00 | Price 0.87 | Shares 10,000
Sale 1 Sep 2017
Value US$63,278.42 | Price 0.79 | Shares 79,998
Buy 31 Aug 2017
Value US$75.25 | Price 0.93 | Shares 81
Buy 31 Aug 2017
Value US$3,740.55 | Price 0.94 | Shares 3,981
Buy 31 Aug 2017
Value US$5,581.72 | Price 0.94 | Shares 5,938
Buy 30 Dec 2015
Value US$27,750.00 | Price 1.85 | Shares 15,000
Buy 30 Dec 2015
Value US$22,200.00 | Price 1.85 | Shares 12,000
Sale 30 Dec 2015
Value US$13,350.00 | Price 1.78 | Shares 7,500
Buy 29 Dec 2014
Value US$110,733.00 | Price 3.69 | Shares 30,000
Sale 26 Sep 2014
Value US$17,040.40 | Price 4.26 | Shares 4,000
Buy 24 Sep 2014
Value US$28,733.40 | Price 4.23 | Shares 6,800
Buy 23 Sep 2014
Value US$82,731.60 | Price 4.22 | Shares 19,600
Buy 22 Sep 2014
Value US$143,752.00 | Price 4.23 | Shares 34,000
Buy 15 May 2013
Value US$146,540.00 | Price 3.66 | Shares 40,000
Buy 31 May 2012
Value US$67,320.00 | Price 3.74 | Shares 18,000
Buy 30 May 2012
Value US$68,580.00 | Price 3.81 | Shares 18,000
Buy 29 May 2012
Value US$65,286.00 | Price 3.63 | Shares 18,000
Buy 25 May 2012
Value US$81,305.00 | Price 3.54 | Shares 23,000
Buy 24 May 2012
Value US$80,822.00 | Price 3.51 | Shares 23,000
Buy 23 May 2012
Value US$77,158.64 | Price 3.51 | Shares 21,970
Buy 23 May 2012
Value US$355.00 | Price 3.55 | Shares 100
Buy 22 May 2012
Value US$47,927.51 | Price 3.59 | Shares 13,354
Buy 22 May 2012
Value US$21,181.00 | Price 3.59 | Shares 5,900
Buy 21 Jun 2010
Value US$62,778.70 | Price 6.37 | Shares 9,858
Buy 18 Jun 2010
Value US$41,487.12 | Price 6.44 | Shares 6,442
Buy 17 Jun 2010
Value US$136,796.00 | Price 6.22 | Shares 22,000
Buy 16 Jun 2010
Value US$13,025.87 | Price 6.22 | Shares 2,095
Buy 16 Jun 2010
Value US$42,638.80 | Price 6.36 | Shares 6,700
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-09 2026-03-06 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
48,555 -0.9%
161.09
US$3,249,017 		48,555 -0.9% 161.09 US$3,249,017
2025-06-06 2025-06-04 S Sale
2.4
Jones Sharon L
Non-Executive Director
52,497 +45.1%
415.33
US$2,910,503 		52,497 +45.1% 415.33 US$2,910,503
2025-06-04 2025-06-04 PrS Proposed sale
2.4
SHARON JONES

Director

Non-Executive Director
17,523
137.22
US$2,404,164 		17,523 137.22 US$2,404,164
2025-04-01 2025-03-28 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
15,000 +3.2%
1.05
US$15,750 		15,000 +3.2% 1.05 US$15,750
2024-11-20 2024-11-19 B Purchase
2.4
Jones Sharon L
Non-Executive Director
8,014 +9.0%
1.08
US$8,656 		8,014 +9.0% 1.08 US$8,656
2024-11-19 2024-11-18 B Purchase
2.4
Jones Sharon L
Non-Executive Director
9,800 +12.4%
1.05
US$10,290 		9,800 +12.4% 1.05 US$10,290
2024-11-19 2024-11-15 B Purchase
2.4
Jones Sharon L
Non-Executive Director
4,200 +5.6%
1.05
US$4,410 		4,200 +5.6% 1.05 US$4,410
2024-11-18 2024-11-14 B Purchase
2.4
Jones Sharon L
Non-Executive Director
7,200 +10.7%
1.04
US$7,488 		7,200 +10.7% 1.04 US$7,488
2024-11-18 2024-11-13 B Purchase
2.4
Jones Sharon L
Non-Executive Director
9,100 +15.6%
1.05
US$9,555 		9,100 +15.6% 1.05 US$9,555
2024-11-18 2024-11-12 B Purchase
2.4
Jones Sharon L
Non-Executive Director
9,500 +19.5%
1.02
US$9,690 		9,500 +19.5% 1.02 US$9,690
2024-09-16 2024-09-12 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
20,000 +4.5%
1.02
US$20,400 		20,000 +4.5% 1.02 US$20,400
2024-09-16 2024-09-12 B Purchase
3.1
Albrecht Ellen T

Chief Financial Officer

Officer
5,000 +5.8%
1.01
US$5,050 		5,000 +5.8% 1.01 US$5,050
2024-08-30 2024-08-28 B Purchase
2.4
Jones Sharon L
Non-Executive Director
3,293 +7.2%
1.01
US$3,309 		3,293 +7.2% 1.01 US$3,309
2024-08-21 2024-08-12 B Purchase
2.4
Jones Sharon L
Non-Executive Director
447 +1.0%
1.01
US$449 		447 +1.0% 1.01 US$449
2024-08-12 2024-08-09 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
20,000 +4.8%
1.04
US$20,896 		20,000 +4.8% 1.04 US$20,896
2023-08-14 2023-08-11 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
15,000 +4.5%
1.20
US$17,985 		15,000 +4.5% 1.20 US$17,985
2022-05-19 2022-05-17 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
20,000 +6.5%
1.20
US$23,998 		20,000 +6.5% 1.20 US$23,998
2021-01-04 2020-12-31 S Sale
3.0
BAILEY BETTYE J
Large shareholder
42,711 -1.0%
4.01
US$171,288 		42,711 -1.0% 4.01 US$171,288
2020-12-29 2020-12-23 S Sale
2.4
ZEITLER DENNIS L
Non-Executive Director
71,000 -53.1%
4.92
US$349,178 		71,000 -53.1% 4.92 US$349,178
2020-12-28 2020-12-23 S Sale
3.1
Albrecht Ellen T

Acting PFO and Treasurer

Officer
41,900 -51.9%
5.00
US$209,500 		41,900 -51.9% 5.00 US$209,500
2020-12-28 2020-12-23 S Sale
3.4
ARNONE VINCENT J

President & CEO

Executive Director
75,000 -19.5%
5.01
US$375,975 		75,000 -19.5% 5.01 US$375,975
2020-12-28 2020-12-22 S Sale
3.4
ARNONE VINCENT J

President & CEO

Executive Director
125,000 -24.5%
4.25
US$531,000 		125,000 -24.5% 4.25 US$531,000
2020-12-28 2020-12-22 S Sale
3.1
Albrecht Ellen T

Acting PFO and Treasurer

Officer
30,000 -27.1%
4.26
US$127,800 		30,000 -27.1% 4.26 US$127,800
2020-12-04 2020-12-02 S Sale
3.3
Markowsky James J
Non-Executive Director
30,000 -100.0%
3.37
US$101,100 		30,000 -100.0% 3.37 US$101,100
2020-12-04 2020-12-02 S Sale
3.3
Markowsky James J
Non-Executive Director
20,000 -40.0%
3.44
US$68,800 		20,000 -40.0% 3.44 US$68,800
2020-11-30 2020-11-25 S Sale
3.0
BAILEY BETTYE J
Large shareholder
42,028 -1.0%
4.74
US$199,209 		42,028 -1.0% 4.74 US$199,209
2020-11-27 2020-11-25 S Sale
3.5
BAILEY DOUGLAS G
Non-Executive Director
60,400 -3.3%
5.38
US$324,650 		60,400 -3.3% 5.38 US$324,650
2020-11-27 2020-11-24 S Sale
3.3
Markowsky James J
Non-Executive Director
44,000 -46.8%
5.64
US$248,160 		44,000 -46.8% 5.64 US$248,160
2020-11-27 2020-11-24 S Sale
3.3
Markowsky James J
Non-Executive Director
12,627 -11.8%
6.10
US$77,025 		12,627 -11.8% 6.10 US$77,025
2020-11-27 2020-11-24 S Sale
3.5
BAILEY DOUGLAS G
Non-Executive Director
76,944 -4.0%
5.84
US$449,276 		76,944 -4.0% 5.84 US$449,276
2020-09-28 2020-09-25 B Purchase
3.5
Cummings William E JR

Senior Vice President, Sales

Officer
5,329 +1.9%
0.72
US$3,835 		5,329 +1.9% 0.72 US$3,835
2020-09-24 2020-09-24 B Purchase
3.5
Cummings William E JR

Senior Vice President, Sales

Officer
33,886 +13.4%
0.64
US$21,728 		33,886 +13.4% 0.64 US$21,728
2020-03-18 2020-03-17 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
15,000 +2.9%
0.43
US$6,468 		15,000 +2.9% 0.43 US$6,468
2019-09-26 2019-09-26 B Purchase
3.5
Cummings William E JR

Senior Vice President, Sales
28,489 +12.2%
0.97
US$27,546 		28,489 +12.2% 0.97 US$27,546
2019-09-25 2019-09-25 B Purchase
3.5
Cummings William E JR

Senior Vice President, Sales
21,511 +10.2%
0.96
US$20,616 		21,511 +10.2% 0.96 US$20,616
2019-09-06 2019-09-06 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
20,000 +4.1%
1.01
US$20,140 		20,000 +4.1% 1.01 US$20,140
2019-08-28 2019-08-28 B Purchase Markowsky James J Non-Executive Director
20,000 +158.4%
0.82
US$16,440 		20,000 +158.4% 0.82 US$16,440
2019-06-18 2019-06-18 B Purchase
3.4
ARNONE VINCENT J

President & CEO

Executive Director
15,000 +3.2%
1.22
US$18,225 		15,000 +3.2% 1.22 US$18,225
2019-05-22 2019-05-22 S Sale
3.2
Pach James M

PFO and Treasurer
6,859 -12.1%
1.54
US$10,563 		6,859 -12.1% 1.54 US$10,563
2019-03-25 2019-03-22 S Sale
3.3
Markowsky James J
20,000 -100.0%
1.66
US$33,200 		20,000 -100.0% 1.66 US$33,200
2019-05-20 2018-08-23 B Purchase
2.4
Jones Sharon L
3,950 +inf%
1.04
US$4,108 		3,950 +inf% 1.04 US$4,108
2018-08-24 2018-08-23 B Purchase ARNONE VINCENT J

President & CEO

Executive Director
2,033 +0.4%
1.08
US$2,196 		2,033 +0.4% 1.08 US$2,196
2018-08-23 2018-08-22 B Purchase ARNONE VINCENT J

President & CEO

Executive Director
22,967 +5.1%
1.02
US$23,472 		22,967 +5.1% 1.02 US$23,472
2018-07-06 2018-06-29 B Purchase Cummings William E JR

Senior Vice President, Sales

Officer
10,200 +5.8%
1.08
US$11,006 		10,200 +5.8% 1.08 US$11,006
2017-12-13 2017-12-12 B Purchase ZEITLER DENNIS L
50,000 +inf%
1.01
US$50,320 		50,000 +inf% 1.01 US$50,320
2017-09-19 2017-09-15 B Purchase ARNONE VINCENT J

President & CEO

Executive Director
18,000 +5.9%
0.94
US$16,902 		18,000 +5.9% 0.94 US$16,902
2017-09-18 2017-09-14 B Purchase ARNONE VINCENT J

President & CEO

Executive Director
32,000 +11.7%
0.92
US$29,568 		32,000 +11.7% 0.92 US$29,568
2017-09-06 2017-09-05 B Purchase Markowsky James J
10,000 +100.0%
0.87
US$8,650 		10,000 +100.0% 0.87 US$8,650
2017-09-06 2017-09-01 S Sale Collins David S

Sr. Vice President
79,998 -100.0%
0.79
US$63,278 		79,998 -100.0% 0.79 US$63,278
2017-09-05 2017-08-31 B Purchase Markowsky James J
81 +0.8%
0.93
US$75 		81 +0.8% 0.93 US$75
2017-09-05 2017-08-31 B Purchase Markowsky James J
3,981 +67.0%
0.94
US$3,741 		3,981 +67.0% 0.94 US$3,741
2017-09-05 2017-08-31 B Purchase Markowsky James J
5,938 +inf%
0.94
US$5,582 		5,938 +inf% 0.94 US$5,582
2016-01-04 2015-12-30 B Purchase BAILEY DOUGLAS G

Executive Chairman

Executive Director
15,000 +0.8%
1.85
US$27,750 		15,000 +0.8% 1.85 US$27,750
2016-01-04 2015-12-30 B Purchase ARNONE VINCENT J

President & CEO

Executive Director
12,000 +5.9%
1.85
US$22,200 		12,000 +5.9% 1.85 US$22,200
2016-01-04 2015-12-30 S Sale Collins David S

Sr. Vice President

Officer
7,500 -9.6%
1.78
US$13,350 		7,500 -9.6% 1.78 US$13,350
2014-12-30 2014-12-29 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
30,000 +1.7%
3.69
US$110,733 		30,000 +1.7% 3.69 US$110,733
2014-09-30 2014-09-26 S Sale Puissant Robert E

Executive Vice President

Officer
4,000 -100.0%
4.26
US$17,040 		4,000 -100.0% 4.26 US$17,040
2014-09-25 2014-09-24 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
6,800 +0.4%
4.23
US$28,733 		6,800 +0.4% 4.23 US$28,733
2014-09-24 2014-09-23 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
19,600 +1.1%
4.22
US$82,732 		19,600 +1.1% 4.22 US$82,732
2014-09-23 2014-09-22 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
34,000 +2.0%
4.23
US$143,752 		34,000 +2.0% 4.23 US$143,752
2013-05-17 2013-05-15 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
40,000 +2.6%
3.66
US$146,540 		40,000 +2.6% 3.66 US$146,540
2012-06-01 2012-05-31 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
18,000 +1.2%
3.74
US$67,320 		18,000 +1.2% 3.74 US$67,320
2012-05-31 2012-05-30 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
18,000 +1.2%
3.81
US$68,580 		18,000 +1.2% 3.81 US$68,580
2012-05-30 2012-05-29 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
18,000 +1.2%
3.63
US$65,286 		18,000 +1.2% 3.63 US$65,286
2012-05-29 2012-05-25 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
23,000 +1.6%
3.54
US$81,305 		23,000 +1.6% 3.54 US$81,305
2012-05-25 2012-05-24 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
23,000 +1.6%
3.51
US$80,822 		23,000 +1.6% 3.51 US$80,822
2012-05-24 2012-05-23 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
21,970 +1.6%
3.51
US$77,159 		21,970 +1.6% 3.51 US$77,159
2012-05-24 2012-05-23 B Purchase Puissant Robert E

Executive Vice President

Officer
100 +1.0%
3.55
US$355 		100 +1.0% 3.55 US$355
2012-05-24 2012-05-22 B Purchase BAILEY DOUGLAS G

President, CEO & Chairman

Executive Director
13,354 +1.0%
3.59
US$47,928 		13,354 +1.0% 3.59 US$47,928
2012-05-24 2012-05-22 B Purchase Puissant Robert E

Executive Vice President

Officer
5,900 +147.5%
3.59
US$21,181 		5,900 +147.5% 3.59 US$21,181
2010-06-23 2010-06-21 B Purchase BAILEY RALPH E

Emeritus Chairman

Executive Director Large shareholder
9,858 +6.1%
6.37
US$62,779 		9,858 +6.1% 6.37 US$62,779
2010-06-21 2010-06-18 B Purchase BAILEY RALPH E

Emeritus Chairman

Executive Director Large shareholder
6,442 +4.2%
6.44
US$41,487 		6,442 +4.2% 6.44 US$41,487
2010-06-18 2010-06-17 B Purchase BAILEY RALPH E

Emeritus Chairman

Executive Director Large shareholder
22,000 +16.6%
6.22
US$136,796 		22,000 +16.6% 6.22 US$136,796
2010-06-17 2010-06-16 B Purchase BAILEY RALPH E

Emeritus Chairman

Executive Director
2,095 +4.0%
6.22
US$13,026 		2,095 +4.0% 6.22 US$13,026
2010-06-17 2010-06-16 B Purchase BAILEY RALPH E

Emeritus Chairman

Executive Director
6,700 +5.3%
6.36
US$42,639 		6,700 +5.3% 6.36 US$42,639
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