shares of altus power inc were down 23 to 1095 in early trading thursday after the company said a stockholder affiliated with blackstone inc plans to sell 7 million shares in an underwritten public offering the solarpower company announced the secondary offering after the market closed wednesday and said later that night that the offering had been priced at 1150 a share the offering is expected to net proceeds of 805 million before underwriting discounts and commissions and close on oct 3 the company said altus wont receive any proceeds from the sale