30% off. Use code SUMMERSALE30 at checkout for 30% off for 12 months on Plus, Pro and Premium subscriptions. Subscribe now
United States Machinery, Equipment & Components

Clearsign Technologies Corp (CLIR)

Track

Over the last 90 days, Clearsign Technologies Corp. has seen insider activity dominated by buying, with a net buy value of $27,679. One insider made net purchases. The stock price has decreased by 4.2% in the past 90 days, trading near its 52-week low.
Stock chart
Ticker: CLIR Exchange: NAS
Preparing chart...
Download chart Copy chart image Copy link Share to X Share


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Silva Gil Todd
2 purchases — total 10,569 USD
Buy 23 Apr 2026
Value US$1,300,497.88 | Price 69.04 | Shares 47,355
Buy 23 Apr 2026
Value US$1,224,746.03 | Price 476.20 | Shares 44,562
Buy 17 Mar 2026
Value US$3,666,796.82 | Price 164.75 | Shares 12,774
Buy 16 Mar 2026
Value US$8,710.00 | Price 4.36 | Shares 2,000
Buy 24 Jun 2024
Value US$3,048,500.00 | Price 0.91 | Shares 3,350,000
Buy 8 Jul 2022
Value US$0.00 | Price 0.00 | Shares 0
Buy 8 Jul 2022
Value US$0.00 | Price 0.00 | Shares 0
Buy 8 Jul 2022
Value US$1,766,669.34 | Price 1.11 | Shares 1,591,594
Buy 14 Jun 2022
Value US$50,400.00 | Price 1.12 | Shares 45,000
Buy 24 Aug 2020
Value US$10,000.00 | Price 2.00 | Shares 5,000
Buy 24 Aug 2020
Value US$70,000.00 | Price 2.00 | Shares 35,000
Buy 17 May 2019
Value US$101,240.00 | Price 1.01 | Shares 100,000
Buy 19 Mar 2019
Value US$4,700.00 | Price 0.94 | Shares 5,000
Buy 19 Mar 2019
Value US$4,700.00 | Price 0.94 | Shares 5,000
Buy 18 Dec 2018
Value US$11,400.00 | Price 1.14 | Shares 10,000
Buy 27 Feb 2018
Value US$22,500.00 | Price 2.25 | Shares 10,000
Buy 27 Feb 2018
Value US$249,750.00 | Price 2.25 | Shares 111,000
Buy 27 Feb 2018
Value US$49,999.50 | Price 2.25 | Shares 22,222
Buy 27 Feb 2018
Value US$2,250.00 | Price 2.25 | Shares 1,000
Buy 4 Dec 2017
Value US$10,625.00 | Price 2.13 | Shares 5,000
Buy 22 Aug 2017
Value US$14,453.50 | Price 2.89 | Shares 5,000
Buy 21 Aug 2017
Value US$2,945.00 | Price 2.95 | Shares 1,000
Buy 18 Aug 2017
Value US$3,190.00 | Price 3.19 | Shares 1,000
Buy 17 Aug 2017
Value US$3,195.00 | Price 3.20 | Shares 1,000
Buy 29 Mar 2016
Value US$39,600.00 | Price 3.96 | Shares 10,000
Buy 10 Mar 2016
Value US$28,618.00 | Price 3.49 | Shares 8,200
Buy 9 Mar 2016
Value US$7,056.00 | Price 3.36 | Shares 2,100
Sale 17 Dec 2015
Value US$45,951.00 | Price 4.60 | Shares 10,000
Sale 16 Dec 2015
Value US$40,162.90 | Price 4.55 | Shares 8,834
Sale 15 Dec 2015
Value US$13,041.07 | Price 4.52 | Shares 2,885
Sale 11 Dec 2015
Value US$1,473.99 | Price 4.91 | Shares 300
Sale 10 Dec 2015
Value US$14,606.90 | Price 4.90 | Shares 2,981
Sale 4 Dec 2015
Value US$55,611.00 | Price 5.01 | Shares 11,100
Sale 3 Dec 2015
Value US$72,537.06 | Price 5.04 | Shares 14,382
Buy 1 Dec 2015
Value US$48,505.52 | Price 5.18 | Shares 9,364
Sale 1 Dec 2015
Value US$50,107.00 | Price 5.01 | Shares 10,000
Buy 30 Nov 2015
Value US$53,073.64 | Price 4.99 | Shares 10,636
Sale 30 Nov 2015
Value US$49,998.00 | Price 5.00 | Shares 10,000
Sale 23 Sep 2015
Value US$61,825.68 | Price 7.36 | Shares 8,400
Sale 22 Sep 2015
Value US$11,760.00 | Price 7.35 | Shares 1,600
Sale 18 Sep 2015
Value US$61,800.00 | Price 6.18 | Shares 10,000
Buy 25 Mar 2015
Value US$14,865.60 | Price 4.96 | Shares 3,000
Buy 18 Mar 2015
Value US$16,802.60 | Price 5.79 | Shares 2,900
Buy 18 Mar 2015
Value US$30,643.60 | Price 5.89 | Shares 5,200
Buy 10 Feb 2015
Value US$499,999.50 | Price 5.85 | Shares 85,470
Sale 5 Feb 2015
Value US$292,500.00 | Price 5.85 | Shares 50,000
Buy 30 Dec 2014
Value US$38,340.00 | Price 7.10 | Shares 5,400
Planned sale 5 Dec 2014
Value US$24,924.00 | Price 8.04 | Shares 3,100
Planned sale 1 Dec 2014
Value US$528.00 | Price 8.00 | Shares 66
Buy 25 Nov 2014
Value US$7,010.91 | Price 7.79 | Shares 900
Buy 24 Sep 2014
Value US$26,800.00 | Price 5.36 | Shares 5,000
Sale 26 Aug 2014
Value US$14,612.95 | Price 8.15 | Shares 1,793
Sale 25 Aug 2014
Value US$86,166.52 | Price 8.36 | Shares 10,307
Sale 22 Aug 2014
Value US$56,146.00 | Price 8.38 | Shares 6,700
Planned sale 20 Aug 2014
Value US$33,822.66 | Price 8.90 | Shares 3,800
Sale 20 Jun 2014
Value US$5,760.00 | Price 10.00 | Shares 576
Planned sale 28 May 2014
Value US$42,166.58 | Price 8.84 | Shares 4,771
Buy 5 Dec 2012
Value US$2,345.00 | Price 4.69 | Shares 500
Buy 5 Dec 2012
Value US$2,355.00 | Price 4.71 | Shares 500
Buy 30 Nov 2012
Value US$1,533.00 | Price 5.11 | Shares 300
Buy 29 Nov 2012
Value US$4,763.75 | Price 5.15 | Shares 925
Buy 29 Nov 2012
Value US$1,542.00 | Price 5.14 | Shares 300
Buy 25 Apr 2012
Value US$200,000.00 | Price 4.00 | Shares 50,000
Buy 25 Apr 2012
Value US$20,000.00 | Price 4.00 | Shares 5,000
Buy 25 Apr 2012
Value US$58,200.00 | Price 4.00 | Shares 14,550
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
2026-04-27 2026-04-23 B Purchase
Silva Gil Todd
Non-Executive Director
47,355 +36.0%
69.04
US$1,300,498 		47,355 +36.0% 69.04 US$1,300,498
2026-04-27 2026-04-23 B Purchase
Silva Gil Todd
Non-Executive Director
44,562 -48.4%
476.20
US$1,224,746 		44,562 -48.4% 476.20 US$1,224,746
2026-03-19 2026-03-17 B Purchase
Silva Gil Todd
Non-Executive Director
12,774 +10.3%
164.75
US$3,666,797 		12,774 +10.3% 164.75 US$3,666,797
2026-03-19 2026-03-16 B Purchase
Silva Gil Todd
Non-Executive Director
2,000 +inf%
4.36
US$8,710 		2,000 +inf% 4.36 US$8,710
2024-06-26 2024-06-24 B Purchase
1.2
HOFFMAN Robert Thurston Sr
Large shareholder
3,350,000 +54.1%
0.91
US$3,048,500 		3,350,000 +54.1% 0.91 US$3,048,500
2022-07-13 2022-07-08 B Purchase
1.2
HOFFMAN Robert Thurston Sr
Non-Executive Director Large shareholder
0
0.00
US$0 		0 0.00 US$0
2022-07-13 2022-07-08 B Purchase
1.2
HOFFMAN Robert Thurston Sr
Non-Executive Director Large shareholder
0
0.00
US$0 		0 0.00 US$0
2022-07-13 2022-07-08 B Purchase
1.2
HOFFMAN Robert Thurston Sr
Non-Executive Director Large shareholder
1,591,594 +26.6%
1.11
US$1,766,669 		1,591,594 +26.6% 1.11 US$1,766,669
2022-06-16 2022-06-14 B Purchase
3.0
Pate Bruce Alan
Non-Executive Director
45,000 +42.9%
1.12
US$50,400 		45,000 +42.9% 1.12 US$50,400
2020-08-26 2020-08-24 B Purchase
Meline Susanne
Non-Executive Director
5,000 +10.2%
2.00
US$10,000 		5,000 +10.2% 2.00 US$10,000
2020-08-26 2020-08-24 B Purchase
3.0
Pate Bruce Alan
Non-Executive Director
35,000 +50.0%
2.00
US$70,000 		35,000 +50.0% 2.00 US$70,000
2019-05-20 2019-05-17 B Purchase
3.0
Pate Bruce Alan
100,000 +inf%
1.01
US$101,240 		100,000 +inf% 1.01 US$101,240
2019-03-20 2019-03-19 B Purchase
2.3
Kendrick Donald W

Chief Technology Officer

Officer
5,000 +19.5%
0.94
US$4,700 		5,000 +19.5% 0.94 US$4,700
2019-03-20 2019-03-19 B Purchase
2.3
Kendrick Donald W

Chief Technology Officer

Officer
5,000 +12.7%
0.94
US$4,700 		5,000 +12.7% 0.94 US$4,700
2018-12-19 2018-12-18 B Purchase Kendrick Donald W

Chief Technology Officer

Officer
10,000 +34.2%
1.14
US$11,400 		10,000 +34.2% 1.14 US$11,400
2018-02-28 2018-02-27 B Purchase PIRNAT STEPHEN E

Chief Executive Officer

Executive Director
10,000 +9.6%
2.25
US$22,500 		10,000 +9.6% 2.25 US$22,500
2018-02-28 2018-02-27 B Purchase BELL LON E Non-Executive Director
111,000 +45.6%
2.25
US$249,750 		111,000 +45.6% 2.25 US$249,750
2018-02-28 2018-02-27 B Purchase Meline Susanne Non-Executive Director
22,222 +inf%
2.25
US$50,000 		22,222 +inf% 2.25 US$50,000
2018-02-28 2018-02-27 B Purchase Fike Brian Grant

Interim CFO

Officer
1,000 +inf%
2.25
US$2,250 		1,000 +inf% 2.25 US$2,250
2017-12-06 2017-12-04 B Purchase Kendrick Donald W

Chief Technology Officer
5,000 +24.3%
2.13
US$10,625 		5,000 +24.3% 2.13 US$10,625
2017-08-23 2017-08-22 B Purchase Kendrick Donald W

Chief Technology Officer
5,000 +32.1%
2.89
US$14,454 		5,000 +32.1% 2.89 US$14,454
2017-08-22 2017-08-21 B Purchase PIRNAT STEPHEN E

Chief Executive Officer

Executive Director
1,000 +1.0%
2.95
US$2,945 		1,000 +1.0% 2.95 US$2,945
2017-08-21 2017-08-18 B Purchase Ruiz Roberto

Chief Operating Officer
1,000 +21.9%
3.19
US$3,190 		1,000 +21.9% 3.19 US$3,190
2017-08-22 2017-08-17 B Purchase LEE ANDREW U

See Remarks
1,000 +20.8%
3.20
US$3,195 		1,000 +20.8% 3.20 US$3,195
2016-03-29 2016-03-29 B Purchase HARMON JAMES N

Chief Financial Officer

Officer
10,000 +166.7%
3.96
US$39,600 		10,000 +166.7% 3.96 US$39,600
2016-03-11 2016-03-10 B Purchase COLANNINO JOSEPH

Chief Technology Officer

Officer
8,200 +46.7%
3.49
US$28,618 		8,200 +46.7% 3.49 US$28,618
2016-03-11 2016-03-09 B Purchase COLANNINO JOSEPH

Chief Technology Officer

Officer
2,100 +13.6%
3.36
US$7,056 		2,100 +13.6% 3.36 US$7,056
2015-12-17 2015-12-17 S Sale BD & DBG LIVING TRUST Non-Executive Director
10,000 -1.6%
4.60
US$45,951 		10,000 -1.6% 4.60 US$45,951
2015-12-17 2015-12-16 S Sale BD & DBG LIVING TRUST Non-Executive Director
8,834 -1.4%
4.55
US$40,163 		8,834 -1.4% 4.55 US$40,163
2015-12-17 2015-12-15 S Sale BD & DBG LIVING TRUST Non-Executive Director
2,885 -0.5%
4.52
US$13,041 		2,885 -0.5% 4.52 US$13,041
2015-12-15 2015-12-11 S Sale BD & DBG LIVING TRUST Non-Executive Director
300 -0.0%
4.91
US$1,474 		300 -0.0% 4.91 US$1,474
2015-12-15 2015-12-10 S Sale BD & DBG LIVING TRUST Non-Executive Director
2,981 -0.5%
4.90
US$14,607 		2,981 -0.5% 4.90 US$14,607
2015-12-04 2015-12-04 S Sale BD & DBG LIVING TRUST Non-Executive Director
11,100 -1.7%
5.01
US$55,611 		11,100 -1.7% 5.01 US$55,611
2015-12-04 2015-12-03 S Sale BD & DBG LIVING TRUST Non-Executive Director
14,382 -2.2%
5.04
US$72,537 		14,382 -2.2% 5.04 US$72,537
2015-12-02 2015-12-01 B Purchase PIRNAT STEPHEN E

Chief Executive Officer

Executive Director
9,364 +28.9%
5.18
US$48,506 		9,364 +28.9% 5.18 US$48,506
2015-12-02 2015-12-01 S Sale BD & DBG LIVING TRUST Non-Executive Director
10,000 -1.5%
5.01
US$50,107 		10,000 -1.5% 5.01 US$50,107
2015-12-02 2015-11-30 B Purchase PIRNAT STEPHEN E

Chief Executive Officer

Executive Director
10,636 +48.8%
4.99
US$53,074 		10,636 +48.8% 4.99 US$53,074
2015-12-02 2015-11-30 S Sale BD & DBG LIVING TRUST Non-Executive Director
10,000 -1.5%
5.00
US$49,998 		10,000 -1.5% 5.00 US$49,998
2015-09-23 2015-09-23 S Sale BD & DBG LIVING TRUST Non-Executive Director
8,400 -1.2%
7.36
US$61,826 		8,400 -1.2% 7.36 US$61,826
2015-09-23 2015-09-22 S Sale BD & DBG LIVING TRUST Non-Executive Director
1,600 -0.2%
7.35
US$11,760 		1,600 -0.2% 7.35 US$11,760
2015-09-23 2015-09-18 S Sale BD & DBG LIVING TRUST Non-Executive Director
10,000 -1.4%
6.18
US$61,800 		10,000 -1.4% 6.18 US$61,800
2015-03-26 2015-03-25 B Purchase LEE ANDREW U

See Remarks

Officer
3,000 +300.0%
4.96
US$14,866 		3,000 +300.0% 4.96 US$14,866
2015-03-19 2015-03-18 B Purchase Ruiz Roberto

Sr VP - Product Development

Officer
2,900 +322.2%
5.79
US$16,803 		2,900 +322.2% 5.79 US$16,803
2015-03-19 2015-03-18 B Purchase Ruiz Roberto

Sr VP - Product Development

Officer
5,200 +2600.0%
5.89
US$30,644 		5,200 +2600.0% 5.89 US$30,644
2015-02-12 2015-02-10 B Purchase BELL LON E Non-Executive Director
85,470 +119.0%
5.85
US$500,000 		85,470 +119.0% 5.85 US$500,000
2015-02-09 2015-02-05 S Sale OSLER GEOFFREY D

Chief Marketing Officer

Officer
50,000 -10.5%
5.85
US$292,500 		50,000 -10.5% 5.85 US$292,500
2014-12-31 2014-12-30 B Purchase HARMON JAMES N

See Remarks

Officer
5,400 +3.9%
7.10
US$38,340 		5,400 +3.9% 7.10 US$38,340
2014-12-05 2014-12-05 PlS Planned sale BD & DBG LIVING TRUST Large shareholder
3,100 -0.3%
8.04
US$24,924 		3,100 -0.3% 8.04 US$24,924
2014-12-02 2014-12-01 PlS Planned sale BD & DBG LIVING TRUST Large shareholder
66 -0.0%
8.00
US$528 		66 -0.0% 8.00 US$528
2014-11-26 2014-11-25 B Purchase Ruiz Roberto

Sr VP - Product Development

Officer
900 +450.0%
7.79
US$7,011 		900 +450.0% 7.79 US$7,011
2014-09-25 2014-09-24 B Purchase RUTKOWSKI RICHARD F

Chief Executive Officer

Executive Director
5,000 +3.0%
5.36
US$26,800 		5,000 +3.0% 5.36 US$26,800
2014-08-26 2014-08-26 S Sale OSLER GEOFFREY D

Chief Marketing Officer

Officer
1,793 -0.4%
8.15
US$14,613 		1,793 -0.4% 8.15 US$14,613
2014-08-26 2014-08-25 S Sale OSLER GEOFFREY D

Chief Marketing Officer

Officer
10,307 -2.1%
8.36
US$86,167 		10,307 -2.1% 8.36 US$86,167
2014-08-26 2014-08-22 S Sale OSLER GEOFFREY D

Chief Marketing Officer

Officer
6,700 -1.4%
8.38
US$56,146 		6,700 -1.4% 8.38 US$56,146
2014-08-20 2014-08-20 PlS Planned sale BD & DBG LIVING TRUST Large shareholder
3,800 -0.4%
8.90
US$33,823 		3,800 -0.4% 8.90 US$33,823
2014-06-24 2014-06-20 S Sale OSLER GEOFFREY D

Chief Marketing Officer

Officer
576 -0.1%
10.00
US$5,760 		576 -0.1% 10.00 US$5,760
2014-05-29 2014-05-28 PlS Planned sale BD & DBG LIVING TRUST Large shareholder
4,771 -0.5%
8.84
US$42,167 		4,771 -0.5% 8.84 US$42,167
2012-12-06 2012-12-05 B Purchase LEE ANDREW U

SVP of Business Development

Officer
500 +9.1%
4.69
US$2,345 		500 +9.1% 4.69 US$2,345
2012-12-06 2012-12-05 B Purchase LEE ANDREW U

SVP of Business Development

Officer
500 +10.0%
4.71
US$2,355 		500 +10.0% 4.71 US$2,355
2012-12-03 2012-11-30 B Purchase HARMON JAMES N

CHIEF FINANCIAL OFFICER

Officer
300 +0.2%
5.11
US$1,533 		300 +0.2% 5.11 US$1,533
2012-12-03 2012-11-29 B Purchase COLANNINO JOSEPH

CHIEF TECHNOLOGY OFFICER

Officer
925 +6.4%
5.15
US$4,764 		925 +6.4% 5.15 US$4,764
2012-12-03 2012-11-29 B Purchase HARMON JAMES N

CHIEF FINANCIAL OFFICER

Officer
300 +0.2%
5.14
US$1,542 		300 +0.2% 5.14 US$1,542
2012-04-27 2012-04-25 B Purchase BELL LON E Non-Executive Director
50,000 +inf%
4.00
US$200,000 		50,000 +inf% 4.00 US$200,000
2012-04-26 2012-04-25 B Purchase LEE ANDREW U

SVP of Business Development

Officer
5,000 +inf%
4.00
US$20,000 		5,000 +inf% 4.00 US$20,000
2012-04-26 2012-04-25 B Purchase COLANNINO JOSEPH

CHIEF TECHNOLOGY OFFICER

Officer
14,550 +inf%
4.00
US$58,200 		14,550 +inf% 4.00 US$58,200
Explore more

More insider trading research around Clearsign Technologies Corp

More insider trades in United States
Similar Industrials companies with insider activity
More Industrial Goods companies with insider activity
More Machinery, Equipment & Components companies with insider activity
Insider trading in North America