Greg Marken, ADA-ES's Chief Accounting Officer, recently disposed of 4,797 shares of the company. The disposals took place at $8.19 per share, on April 14, 2017. Marken still owns 34,130 shares of the company. Marken operates out of Highlands Ranch, CO. Some additional info was provided as follows:

The above information was disclosed in a filing to the SEC. To see the filing, click here.

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Other recent filings from the company include the following:

BlackRock, Inc. just provided an update on share ownership of ADA-ES - Jan. 19, 2018
ADA-ES's Chief Accounting Officer just disposed of 950 shares - Jan. 17, 2018
ADA-ES's President & CEO just disposed of 9,878 shares - Jan. 4, 2018
ADA-ES's Chief Product Officer just disposed of 599 shares - Jan. 4, 2018
Entry into a Material Definitive - Jan. 4, 2018

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