An Insider at Corning (NYSE: GLW) is Selling Shares (Analyst Ratings) Yesterday, an Insider at Corning (GLW), Clark Kinlin, sold shares of GLW for $602.7K. In addition to Clark Kinlin, 4 other GLW executives reported Sell trades in the last month. Based on Corning's latest earnings report for the quarter ending June 30, the company posted quarterly revenue of $3.5 billion and quarterly net profit of $449 million. In comparison, last year the company earned revenue of $2.56 billion and had a GAAP net loss of $71 million.