On the heels of secondary filings from Rosetta Stone (RST) and Bridgepoint Education (BPI), recent IPOs OpenTable (OPEN) and Grand Canyon Education (LOPE) announced plans for secondary offerings on Wednesday evening and Thursday morning, respectively. Restaurant reservation network provider OpenTable, which went public in May, plans to sell up to 3.3 million shares, all of which are being sold by its venture backers and executives. Online postsecondary education company Grand Canyon Education, which priced its IPO back in November 2008, filed to sell 8 million shares, almost 90% of which are being offered by insiders. Earlier in the week, Grand Canyon's online degree peer Bridgepoint Education filed to sell 11 million shares in an all-insider secondary offering. None of the firms have set a specific pricing date for their offerings. On August 10, Rosetta Stone kicked off this latest wave of announced secondary issuance from recent IPOs, although the language learning software provider withdrew its filing just two weeks later following a surprise earnings shortfall.