cyclodextrin technologies development, inc. (ctd), the "company"​, was organized as a florida corporation on august 9, 1990 with operations beginning july, 1992. in may of 1994 the company became a fully reporting public company listed on the otc bb under the symbol ctdi. in 2000, the company altered its corporate structure to a holding company with subsidiary companies. the otc bb symbol was changed to ctdh. ctd holdings, inc. (the "company"​) was originally formed to market and sell cyclodextrins and related products to the food, pharmaceutical, and other industries; it also provided consulting services related to cyclodextrin technology. ctdh, as a holding company, will acquire, create, and invest in companies that will develop, market, and/or sell products containing cyclodextrins. the company currently operates four wholly owned subsidiaries: ctd, inc.; nanosonic products, inc.; sphingo biotech, inc.; and ferrazo environmental technologies, inc.