PNB Financial Group, holding company for Pacific National Bank in Newport Beach, posted consolidated net income of $409,000 for 1987, slightly above the previous year's $408,000. Revenue rose 11%, to $8 million from $7.2 million. Fourth-quarter net income grew 13.3%, to $170,000 last year from $150,000 the previous year, while revenue remained flat at $2 million. PNB's assets grew 24.5%, to $80.35 million at the end of December from $64.5 million a year earlier. The bank posted annual net income of $615,000 last year, a 10.6% increase over $550,000 the previous year. The bank's total deposits grew 25.5%, to $74.2 million at the end of the year from $59.1 million a year earlier, and its loan portfolio increased 3%, to $44.1 million from $42.8 million.