Mission Valley Bancorp increased its net income in the fourth quarter and its total assets for the full year.The Sun Valley-based parent of Mission Valley Bank reported on Thursday net income of $1.1 million (33 cents a share) for the quarter ending Dec. 31, compared to net income of $633,000 (20 cents) in the same period a year earlier.For the full year, the financial institution had net income of $2.3 million (71 cents a share) compared to net income of $3.6 million ($1.12) in 2019. Total assets increased 31 percent to $477 million.No analysts follow the company.Tamara Gurney, Mission Valley chief executive, called 2020 a tough year for the banking industry due to the coronavirus pandemic but one in which the company took proactive measures to strengthen its balance sheet by bolstering liquidity and loan loss reserves, which had an impact on earnings.“However, we finished the year strong with fourth-quarter net earnings of $1.09 million largely driven by improved credit costs, higher loan fee income from PPP loan forgiveness and sale of SBA loans,” Gurney said in a statement.The earnings were released on Thursday. On Friday, shares in Mission Valley (MVLY) closed unchanged at $11.05 on the over-the-counter market.