 LONGMONT, Colo., May 06, 2021 GLOBE NEWSWIRE -- Enservco Corporation NYSE American: ENSV, a diversified national provider of specialized well-site services to the domestic onshore conventional and unconventional oil and gas industries, today announced it will release its 2021 first quarter financial results before the market opens on Thursday, May 13, 2021. Management will then host a conference call and webcast to discuss the results and subsequent operational developments. 