Philip Guldeman
Analyst · Sandler O'Neill & Partner
Thank you, Al. Let me start by saying 2 things up front. First, as mentioned in the opening statement, the numbers we're going to share with you are based on estimates that are subject to change up to the issuance of our Form 10-K. This is more true now than normal because of the magnitude and complexity of the fair market value estimates used to create those projections. Second, the impact of the merger makes a prior period comparison somewhat difficult and in some cases actually meaningless.
So we aren't going to spend much time on today's call discussing the differences between our fourth quarter results and prior quarter or prior year. Instead, we'll do our best to give you a sense of how our operations performed in the fourth quarter and provide some estimates for the run rate of key metrics going forward.
Our results for the fourth quarter of 2011 reflect 2 months of standalone operations of the former NARA Bank and one month of combined operations following the completion of the merger. We generated net income of $2.9 million or $0.05 per diluted share. Our fourth quarter results were impacted by 3 particularly large items. First, we recorded a $6.4 million charge on the prepayment of FHLB advances as part of a post merger balance sheet restructuring strategy. Second, we had $3.2 million in merger-related expenses. And third, we had $1.9 million in post-merger provision expense for the acquired Center Bank portfolio, which I'll discuss further in a couple of minutes.
Collectively, these 3 items reduced our pre-tax income in the fourth quarter by $11.9 million. I should mention that the FHLB prepayment penalty has been reclassified since the preliminary press release from non-interest income to non-interest expense. As you may know, under acquisition accounting, Center's balance sheet was marked to fair value as of the November 30 acquisition date. The mark on the loan portfolio came in better than we expected, requiring a discount to fair value of just $95.8 million or 6.1% of gross loans acquired. After eliminating the $39.9 million that Center had in allowance for loan losses at the acquisition date, we wrote down the acquired Center loan portfolio by $55.9 million to get to the fair mark value mark.
A portion of the discount on the loan portfolio will be accreted into interest income overtime. Other significant acquisition accounting adjustments on Center's balance sheet include a $6.7 million reduction in the FDIC loss share receivable, a $6.4 million reduction in the value of certificates of deposit and the positive impact of $27.4 million resulting from the deferred tax effects of all of the acquisition accounting adjustments.
In addition, our initial estimate of the amount of goodwill generated by the merger is approximately $92 million. To expand on the post merger balance sheet restructuring a bit, you may recall from our third quarter conference call that we indicated that some restructuring was a possibility after we analyzed the combined bank's cash and securities positions. Following this analysis, we determined that it was in our best interest to reposition certain assets and liabilities.
We prepaid $71 million in FHLB advances and recorded an early debt retirement charge of $6.4 million. We also sold available-for-investment securities with an aggregate book value of $138.2 million at a gain of $1.2 million, or just under 1%. We then purchased replacement securities with an aggregate book value of $108.9 million. Looking at the transaction by itself, the securities transactions will have the effects of increasing interest income by approximately $750,000 in 2012 and only modestly increasing the overall portfolio duration.
I am going to start on the income statement with our net interest income. We generated $40.6 million in net interest income in the fourth quarter. This includes approximately $2.5 million of loan interest income resulting from the December accretion of the acquisition accounting discount on Center's loan portfolio. For the first quarter of 2012, we estimate that net interest income could range from $50 million to $55 million. Although, the variability in net interest income is significantly greater than normal due to the accretion that's now component of our interest income.
Our net interest margin was 4.52% in the fourth quarter, which was significantly impacted in the positive way by the effects of the acquisition accounting and the loan discount accretion. Rather than going through all the various changes that occurred in the fourth quarter, I think the most meaningful data that we can provide would be the spot rates of our major assets and liabilities as of December 31, 2011. The yield on our loan portfolio including loan discount accretion from the transaction was 6.22%. The yield on our loan portfolio excluding the loan discount accretion was 5.69%. So you can see the impact of the accretion aspect.
The yield on our securities portfolio was 2.83%. The cost of deposits was 72 basis points. The cost of funds was 86 basis , and our cost of FHLB advances including fair market value adjustments was 193 basis points. As always, our spot rate reports do not take into consideration the normal discount of deferred loan origination fees into income, so the actual results may be slightly higher than those for loan and net interest margin.
Looking into the first quarter, we would expect that our net interest margin would be flat to slightly higher, principally as a result of the benefits of purchase accounting accretion offset to some extent by the pricing pressures in the current rate environment. Our non-interest income was $6.7 million in the fourth quarter. This included net gains on the sale of securities of $1.2 million. We also recognized the gain of $1 million on the sale of SBA loans during in the fourth quarter. We sold $14.3 million of SBA loans during that quarter, and at the end of the year, we had $18 million in SBA loans in our held-for-sale portfolio.
At the time of the merger date, all of Center's SBA loans were marked up to fair value, which eliminated the opportunity to sell these loans in the secondary market out of gain. Accordingly, we transferred $84 million of SBA loans from Center into our "loans held for investment" portfolio. Our non-interest expense was $31.8 million in the fourth quarter, which included higher costs associated with the combined operations, the $6.4 million prepayment charge related to the early retirement on FHLB advances and $3.2 million in merger-related expenses.
We have incurred an aggregate of $9.3 million merger-related expenses through the end of 2011 and anticipate incurring approximately $4 million to $5 million in expenses substantially in the first half of 2012 as we complete the systems integration, the branch closings and other integration tasks. For the first quarter of 2012, we would expect non-interest expense to be in the range of $31 million to $33 million. Moving to our balance sheet, our gross loans were $3.74 billion at December 31, 2011. CRE loans now comprise close to 71% of our loan portfolio, and C&I loans comprise approximately 26%.
We plan to continue our focus on commercial lending to achieve a more balanced portfolio. Our total deposits were $3.94 billion at December 31, 2011. Following the merger, we intentionally ran off some of our higher-rate time deposits. As a result of this and held by the combination of former Center's deposits, our non-interest bearing deposits now represents 25% of our total deposit base.
I'll now move onto a discussion of asset quality. As I indicated earlier, as part of the merger accounting, Center's loan portfolio was marked to fair value as of November 30. The allowance for loan losses that was on their books was eliminated, and all of their booked loans were placed on accrual status within the BBCN portfolio. This includes loans that had been previously classified as non-accrual by Center prior to the merger. Accordingly, this presents some challenges for analyzing quarter-to-quarter trends and asset quality.
For loan classifications, we believe the most appropriate comparison are pro forma combination of NARA and Center's combined figures at September 30, 2011, with BBCN's figures at year end. So our total watch-list loans which is the sum of special-mention and classified loans were $302 million at December 31 compared with the pro forma combined figure of $349.9 million at September 30. Approximately $28 million of the decline in watch list loans is attributable to improving asset quality trends.
Moving to non-performing loans, we have changed our definition of NPLs to include all of the following loans. Loans that are past due 90 days or more and on non-accrual status, loans that are past due 90 days or more but are on accrual status. This represents the non-performing loans acquired from Center that were marked to fair value and put on accrual status. And finally, accruing restructured loans. Using this more expansive definition, our non-performing loans were $66.2 million at December 31, compared to $51.3 million at September 30.
The increase in non-performing loans is primarily attributable to the addition of the NPLs from Center and the inflow of one $7.9 million commercial real estate loan. Based on the current appraisal, we established the specific reserve of $4.4 million to reflect the decline in the collateral value of that loan. On a percentage basis, NPLs were 1.77% of total loans at December 31 compared with 2.2% at the end of the prior quarter.
Our non-performing assets were $73.8 million at December 31 compared to $56.2 million at September 30. On a percentage basis, non-performing assets were 1.43% of total asset at December 31 compared to 1.86% at the end of the prior quarter. Our net charge-offs were $7.2 million in the fourth quarter, and of this amount, $3.8 million was related to individual note sales during the quarter.
We recorded a provision for loan losses of $9.1 million in the quarter. $4.4 million of this provision expense was related to the one CRE loan I mentioned earlier that migrated to non-accrual status during the fourth quarter. We also recorded $1.9 million in post-merger provision expense attributable to general valuation allowances established against $74.4 million in loans from the acquired Center portfolio. All of these loans had been marked to fair value as of November 30, and accordingly, there was no general valuation allowance against them.
During the month of December, these loans matured, were refinanced, and that requires that they'd be treated as new loans. As such, a general valuation allowance was established for these loans in the amount of $1.9 million. The maturation and refinancing of acquired Center loans that have no valuation allowance held against them will continue to be a driver of provision expense going forward, particularly in the first quarter. We estimate that the additional provision expense required for maturing loans could range between $2.5 million and $3.5 million.
At December 31, we had an allowance for loan losses of $62 million or 1.66% of total loans, and we had a 124% coverage of our total non-performing loans. And finally, due primary to the stock offering conducted during the fourth quarter, all of our capital ratios improved from levels at September 30 and are well in excess of regulatory definitions for a well capitalized institution.
The one number that is artificially inflated by the merger is the leverage ratio, which is reported at 19.49% at December 31, 2011. This is due to the fact that the leverage ratio utilizes the average -- the daily average balance of total assets in the denominator as opposed to the period end balances utilized in the calculation of the other capital ratios. Accordingly, the leverage ratios significantly impacted by the change in total asset balances during the quarter resulting from the merger.
On a pro forma basis, using daily average balance of total assets in the month of December following the completion of the merger, our leverage ratio was 13.69%, which we believe is a more accurate representation of our leverage. And now I'll turn it back to Al. Al?