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Trade Date*
Filing Date*
Insider Name
Buy/Sell
Company Name
Ticker
Price*
Amount
Shares Change
Jun 12, 2020
Jul 06, 2020
Kolstad Gary A
Pres
CEO
Sell
Carbo Ceramics Inc
CRR
$0.02
$1,735
-16.73%
Aug 07, 2019
Aug 07, 2019
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$1.18
$29,500
+4.44%
Jul 29, 2019
Jul 30, 2019
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$1.06
$53,218
+8.89%
Dec 04, 2018
Dec 04, 2018
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$4.77
$47,700
+2.47%
May 17, 2018
May 17, 2018
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$10.65
$42,600
+1.03%
May 08, 2018
May 08, 2018
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$8.9
$26,700
+0.78%
May 03, 2018
May 04, 2018
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$8.89
$26,670
+0.79%
May 01, 2018
May 01, 2018
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$8.49
$84,900
+2.59%
May 03, 2017
May 03, 2017
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$6.37
$127,400
+6.71%
Nov 03, 2016
Nov 03, 2016
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$6.28
$18,840
+1.35%
Nov 01, 2016
Nov 01, 2016
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$6.06
$42,420
+3.14%
Oct 31, 2016
Oct 31, 2016
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$6.04
$60,400
+4.56%
Mar 02, 2016
Mar 04, 2016
Kolstad Gary A
Pres
CEO
Sell
Carbo Ceramics Inc
CRR
$18.9
$52,920
-1.39%
Aug 07, 2014
Aug 08, 2014
Kolstad Gary A
Pres
CEO
Buy
Carbo Ceramics Inc
CRR
$103.36
$206,715
+1.57%