Gruma S.A.B. de CV (GMKKY: Grey Market) | Ex-Dividend Thu, Oct 15, 2020 08:00 - Gruma S.A.B. de CV ( GMKKY : Grey Market) - Ex-Dividend - As of Fri, Oct 16, 2020, Gruma S.A.B. de CV traded ex-dividend. Gruma S.A.B. de CV will disburse a Cash Dividend dividend of $0.05774 to shareholders of GMKKY. You may find a complete list of dividends at otcmarkets.com .