It's my understanding those come in September, 2015
Following from YAHOO 8-K
Dated: September 18, 2014
Item 8.01. Other Events
...Further in connection with the IPO, Yahoo entered into a lock-up agreement with the Underwriters restricting the sale of its remaining ordinary shares of Alibaba for a period of one year, subject to certain exceptions.
Already, 3 upgrades tonight (Morgan Stanley to 109, Deutsche Bank to 104, and Credit Suisse to 114). More to come in the morning.
181 days after the IPO date, or March 18, 2015. That’s when 429 million shares became available for sale in the public market, which is more than the 320 million shares the company sold in the IPO and about 17% of the shares outstanding.
But the biggest lock-up expiration date comes 366 days after the IPO, or Sept. 20, 2015, when 1.6 billion shares are allowed to be sold. That is 64% of the shares outstanding.