IPO Lockup Expirations

A lock-up on an IPO prevents major shareholders and company insiders from selling shares in the company for a specified number of days following an IPO to prevent the market from being flooded with too much supply of a company's stock. Following the expiration of the lock-up period, restrictions preventing a company's employees and other major shareholders from selling their stock are lifted. Lock-up expirations often coincide with a 1-3% drop in the company's stock as a result of the increased number of available shares of the company.

Company NameExpiration DateNumber of SharesInitial Share PriceOffer SizeDate Priced Price
Atomera (ATMR)2/1/20173,200,000$8.00$24,000,0008/5/2016
Gemphire Therapeutics (GEMP)2/1/20173,000,000$10.00$30,000,0008/5/2016
Medpace Holdings (MEDP)2/7/20177,000,000$23.00$161,000,0008/11/2016
Protagonist Therapeutics (PTGX)2/7/20177,500,000$12.00$90,000,0008/11/2016
Airgain (AIRG)2/8/20171,500,000$8.00$12,000,0008/12/2016
Stellar Acquisition III (STLRU)2/15/20176,500,000$10.00$65,000,0008/19/2016