Tremor Video, an online video ad network, will seek to sell its share publicly and raise about $86.3 million, it said in a filing with the SEC last week. The move comes as a host of online video ad companies are expected to test the stock market or M&A market this year. Tremor said in its prospectus that it operated at a net loss of $20 million in 2011 and $16.6 million in 2012, as its costs of revenue and sales and marketing expenses outstripped its revenue. Read more here.