Eco-Stim Energy Solutions Inc. (ESES: Pink Current) | Tier Change Sat, May 11, 2019 12:00 - Eco-Stim Energy Solutions Inc. ( ESES : Pink Current) - Tier Change - The symbol, ESES, no longer is classified as Pink No Information. As of Sat, May 11, 2019, ESES resides in the Pink Current tier. You may find a complete list of tier changes at otcmarkets.com .