10-Q 1 stba-2016331x10q.htm 10-Q
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
______________________________________
FORM 10-Q
______________________________________
(Mark One)

x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2016
OR

¨ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from To
Commission file number 0-12508
______________________________________
S&T BANCORP, INC.
(Exact name of registrant as specified in its charter)
______________________________________

Pennsylvania |  | 25-1434426
(State or other jurisdiction of incorporation or organization) |  | (IRS Employer Identification No.)
800 Philadelphia Street, Indiana, PA |  | 15701
(Address of principal executive offices) |  | (zip code)

800-325-2265
(Registrant’s telephone number, including area code)
Not Applicable
(Former name, former address, and former fiscal year, if changed since last report)
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer | x | Accelerated filer | ¨
Non-accelerated filer | ¨ (Do not check if a smaller reporting company) | Smaller reporting company | ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x
APPLICABLE ONLY TO CORPORATE ISSUERS:
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practical date.
Common Stock, $2.50 Par Value - 34,901,210 shares as of April 30, 2016

Table of Contents
S&T BANCORP, INC. AND SUBSIDIARIES
INDEX
S&T BANCORP, INC. AND SUBSIDIARIES

|  | Page No.
PART I. FINANCIAL INFORMATION |
Item 1. | Financial Statements |
| Consolidated Balance Sheets - March 31, 2016 and December 31, 2015 | 3
| Consolidated Statements of Comprehensive Income - Three Months Ended March 31, 2016 and 2015 | 4
| Consolidated Statements of Changes in Shareholders' Equity - Three Months Ended March 31, 2016 and 2015 | 5
| Consolidated Statements of Cash Flows - Three Months Ended March 31, 2016 and 2015 | 6
| Notes to Consolidated Financial Statements | 7
Item 2. | Management's Discussion and Analysis of Financial Condition and Results of Operations | 39
Item 3. | Quantitative and Qualitative Disclosures about Market Risk | 54
Item 4. | Controls and Procedures | 55
PART II. OTHER INFORMATION |
Item 1. | Legal Proceedings | 56
Item 1A. | Risk Factors | 56
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 56
Item 3. | Defaults Upon Senior Securities | 56
Item 4. | Mine Safety Disclosures | 56
Item 5. | Other Information | 56
Item 6. | Exhibits | 57
| Signatures | 58

2

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S&T BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Unaudited)

| March 31, 2016 | December 31, 2015
(dollars in thousands, except per share data) | (Unaudited) | (Audited)
ASSETS |  |
Cash and due from banks, including interest-bearing deposits of $71,200 and $41,639 at March 31, 2016 and December 31, 2015 | $ | 121,669 |  | $ | 99,399 |
Securities available-for-sale, at fair value | 677,221 |  | 660,963 |
Loans held for sale | 11,739 |  | 35,321 |
Portfolio loans, net of unearned income | 5,176,748 |  | 5,027,612 |
Allowance for loan losses | (50,347 | ) | (48,147 | )
Portfolio loans, net | 5,126,401 |  | 4,979,465 |
Bank owned life insurance | 70,684 |  | 70,175 |
Premises and equipment, net | 48,395 |  | 49,127 |
Federal Home Loan Bank and other restricted stock, at cost | 23,337 |  | 23,032 |
Goodwill | 291,670 |  | 291,764 |
Other intangible assets, net | 6,067 |  | 6,525 |
Other assets | 101,979 |  | 102,583 |
Total Assets | $ | 6,479,162 |  | $ | 6,318,354 |
LIABILITIES |  |
Deposits: |  |
Noninterest-bearing demand | $ | 1,212,231 |  | $ | 1,227,766 |
Interest-bearing demand | 619,617 |  | 616,188 |
Money market | 643,795 |  | 605,184 |
Savings | 1,047,871 |  | 1,061,265 |
Certificates of deposit | 1,494,411 |  | 1,366,208 |
Total Deposits | 5,017,925 |  | 4,876,611 |
Securities sold under repurchase agreements | 60,025 |  | 62,086 |
Short-term borrowings | 355,000 |  | 356,000 |
Long-term borrowings | 116,468 |  | 117,043 |
Junior subordinated debt securities | 45,619 |  | 45,619 |
Other liabilities | 73,324 |  | 68,758 |
Total Liabilities | 5,668,361 |  | 5,526,117 |
SHAREHOLDERS’ EQUITY |  |
Common stock ($2.50 par value) Authorized—50,000,000 shares Issued—36,130,480 shares at March 31, 2016 and December 31, 2015 Outstanding—34,901,210 shares at March 31, 2016 and 34,810,374 shares at December 31, 2015 | 90,326 |  | 90,326 |
Additional paid-in capital | 211,276 |  | 210,545 |
Retained earnings | 551,229 |  | 544,228 |
Accumulated other comprehensive (loss) income | (8,116 | ) | (16,457 | )
Treasury stock (1,229,270 shares at March 31, 2016 and 1,320,106 shares at December 31, 2015, at cost) | (33,914 | ) | (36,405 | )
Total Shareholders’ Equity | 810,801 |  | 792,237 |
Total Liabilities and Shareholders’ Equity | $ | 6,479,162 |  | $ | 6,318,354 |

See Notes to Consolidated Financial Statements
3

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S&T BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Unaudited)

| Three Months Ended March 31,
(dollars in thousands, except per share data) | 2016 | 2015
INTEREST INCOME |  |
Loans, including fees | $ | 51,158 |  | $ | 39,927 |
Investment Securities: |  |
Taxable | 2,553 |  | 2,383 |
Tax-exempt | 942 |  | 1,020 |
Dividends | 366 |  | 586 |
Total Interest Income | 55,019 |  | 43,916 |
INTEREST EXPENSE |  |
Deposits | 4,254 |  | 3,007 |
Borrowings and junior subordinated debt securities | 1,128 |  | 650 |
Total Interest Expense | 5,382 |  | 3,657 |
NET INTEREST INCOME | 49,637 |  | 40,259 |
Provision for loan losses | 5,014 |  | 1,207 |
Net Interest Income After Provision for Loan Losses | 44,623 |  | 39,052 |
NONINTEREST INCOME |  |
Securities gains (losses), net | — |  | — |
Service charges on deposit accounts | 2,999 |  | 2,583 |
Debit and credit card fees | 2,786 |  | 2,715 |
Wealth management fees | 2,752 |  | 2,923 |
Gain on sale of credit card portfolio | 2,066 |  | — |
Insurance fees | 1,774 |  | 1,651 |
Mortgage banking | 529 |  | 525 |
Other | 2,911 |  | 1,687 |
Total Noninterest Income | 15,817 |  | 12,084 |
NONINTEREST EXPENSE |  |
Salaries and employee benefits | 20,902 |  | 16,780 |
Net occupancy | 2,950 |  | 2,588 |
Data processing | 2,111 |  | 2,320 |
Furniture and equipment | 1,929 |  | 1,226 |
Other taxes | 1,100 |  | 842 |
Professional services and legal | 947 |  | 523 |
FDIC insurance | 940 |  | 695 |
Marketing | 901 |  | 816 |
Merger related expenses | — |  | 2,301 |
Other | 6,636 |  | 5,530 |
Total Noninterest Expense | 38,416 |  | 33,621 |
Income Before Taxes | 22,024 |  | 17,515 |
Provision for income taxes | 5,931 |  | 4,680 |
Net Income | $ | 16,093 |  | $ | 12,835 |
Earnings per share—basic | $ | 0.46 |  | $ | 0.41 |
Earnings per share—diluted | $ | 0.46 |  | $ | 0.41 |
Dividends declared per share | $ | 0.19 |  | $ | 0.18 |
Comprehensive Income | $ | 24,434 |  | $ | 16,640 |

See Notes to Consolidated Financial Statements
4

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S&T BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
(Unaudited)

(dollars in thousands, except share and per share data) | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive (Loss)/Income | Treasury Stock | Total
Balance at January 1, 2015 | $ | 77,993 |  | $ | 78,818 |  | $ | 504,060 |  | $ | (13,833 | ) | $ | (38,649 | ) | $ | 608,389 |
Net income for three months ended March 31, 2015 | — |  | — |  | 12,835 |  | — |  | — |  | 12,835 |
Other comprehensive income (loss), net of tax | — |  | — |  | — |  | 3,805 |  | — |  | 3,805 |
Cash dividends declared ($0.18 per share) | — |  | — |  | (5,357 | ) | — |  | — |  | (5,357 | )
Common stock issued in acquisition (4,933,115 shares) | 12,333 |  | 130,136 |  | — |  | — |  | — |  | 142,469 |
Treasury stock issued for restricted awards (71,699 shares, net of 3,685 forfeitures) | — |  | — |  | (1,963 | ) | — |  | 1,884 |  | (79 | )
Recognition of restricted stock compensation expense | — |  | 319 |  | — |  | — |  | — |  | 319 |
Issuance costs | — |  | (123 | ) | — |  | — |  | — |  | (123 | )
Balance at March 31, 2015 | $ | 90,326 |  | $ | 209,150 |  | $ | 509,575 |  | $ | (10,028 | ) | $ | (36,765 | ) | $ | 762,258 |
Balance at January 1, 2016 | $ | 90,326 |  | $ | 210,545 |  | $ | 544,228 |  | $ | (16,457 | ) | $ | (36,405 | ) | $ | 792,237 |
Net income for three months ended March 31, 2016 | — |  | — |  | 16,093 |  | — |  | — |  | 16,093 |
Other comprehensive income (loss), net of tax | — |  | — |  | — |  | 8,341 |  | — |  | 8,341 |
Cash dividends declared ($0.19 per share) | — |  | — |  | (6,601 | ) | — |  | — |  | (6,601 | )
Treasury stock issued for restricted awards (90,836 shares, net of 0 forfeitures) | — |  | — |  | (2,491 | ) | — |  | 2,491 |  | — |
Recognition of restricted stock compensation expense | — |  | 731 |  | — |  | — |  | — |  | 731 |
Balance at March 31, 2016 | $ | 90,326 |  | $ | 211,276 |  | $ | 551,229 |  | $ | (8,116 | ) | $ | (33,914 | ) | $ | 810,801 |

See Notes to Consolidated Financial Statements
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S&T BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)

| Three Months Ended March 31,
(dollars in thousands) | 2016 | 2015
OPERATING ACTIVITIES |  |
Net income | $ | 16,093 |  | $ | 12,835 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Provision for loan losses | 5,014 |  | 1,207 |
Provision for unfunded loan commitments | 125 |  | 198 |
Depreciation, amortization and accretion | 906 |  | 1,460 |
Net amortization of discounts and premiums on securities | 915 |  | 913 |
Stock-based compensation expense | 731 |  | 240 |
Mortgage loans originated for sale | (18,478 | ) | (21,481 | )
Proceeds from the sale of mortgage loans | 19,014 |  | 21,777 |
Gain on the sale of mortgage loans, net | (231 | ) | (203 | )
Gain on the sale of credit card portfolio | (2,066 | ) | — |
Pension plan curtailment gain | (1,017 | ) | — |
Net increase in interest receivable | (2,768 | ) | (2,288 | )
Net increase (decrease) in interest payable | 875 |  | (374 | )
Net (increase) decrease in other assets | (714 | ) | 2,945 |
Net increase in other liabilities | 7,267 |  | 2,061 |
Net Cash Provided by Operating Activities | 25,666 |  | 19,290 |
INVESTING ACTIVITIES |  |
Purchases of securities available-for-sale | (25,168 | ) | (6,373 | )
Proceeds from maturities, prepayments and calls of securities available-for-sale | 17,028 |  | 6,389 |
Net (purchases of) proceeds from Federal Home Loan Bank stock | (305 | ) | 4,024 |
Net increase in loans | (151,841 | ) | (30,588 | )
Purchases of premises and equipment | (468 | ) | (849 | )
Proceeds from the sale of premises and equipment | 3 |  | 7 |
Proceeds from the sale of credit card portfolio | 25,019 |  | — |
Net cash paid in excess of cash acquired from bank merger | — |  | (16,347 | )
Net Cash Used in Investing Activities | (135,732 | ) | (43,737 | )
FINANCING ACTIVITIES |  |
Net increase in core deposits | 13,688 |  | 240,719 |
Net increase (decrease) in certificates of deposit | 128,885 |  | (43,417 | )
Net (decrease) increase in securities sold under repurchase agreements | (2,061 | ) | 16,116 |
Net decrease in short-term borrowings | (1,000 | ) | (159,150 | )
Repayments of long-term borrowings | (575 | ) | (605 | )
Repayment of junior subordinated debt | — |  | (8,500 | )
Treasury shares issued-net | — |  | (79 | )
Common stock issuance costs | — |  | (123 | )
Cash dividends paid to common shareholders | (6,601 | ) | (5,357 | )
Net Cash Provided by Financing Activities | 132,336 |  | 39,604 |
Net increase in cash and cash equivalents | 22,270 |  | 15,157 |
Cash and cash equivalents at beginning of period | 99,399 |  | 109,580 |
Cash and Cash Equivalents at End of Period | $ | 121,669 |  | $ | 124,737 |
Supplemental Disclosures |  |
Interest paid | $ | 4,508 |  | $ | 3,781 |
Income taxes paid, net of refunds | $ | 1,794 |  | $ | 1,500 |
Net assets acquired from bank merger, excluding cash and cash equivalents | $ | — |  | $ | 44,019 |
Transfers of loans to other real estate owned | $ | 49 |  | $ | — |

See Notes to Consolidated Financial Statements
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
NOTE 1. BASIS OF PRESENTATION
Principles of Consolidation
The interim Consolidated Financial Statements include the accounts of S&T Bancorp, Inc., or S&T, and its wholly owned subsidiaries. All significant intercompany transactions have been eliminated in consolidation. Investments of 20 percent to 50 percent of the outstanding common stock of investees are accounted for using the equity method of accounting.
Basis of Presentation
The accompanying unaudited interim Consolidated Financial Statements of S&T have been prepared in accordance with generally accepted accounting principles, or GAAP, in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our annual report on Form 10-K for the year ended December 31, 2015, filed with the Securities and Exchange Commission, or SEC, on February 23, 2016. In the opinion of management, the accompanying interim financial information reflects all adjustments, including normal recurring adjustments, necessary to present fairly our financial position and the results of operations for each of the interim periods presented. Results of operations for interim periods are not necessarily indicative of the results of operations that may be expected for a full year or any future period.
Reclassification
A mounts in prior period financial statements and footnotes are reclassified whenever necessary to conform to the current period presentation. Reclassifications had no effect on our results of operations or financial condition.
Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Recently Adopted Accounting Standards Updates, or ASU
Business Combinations - Simplifying the Accounting for Measurement Period Adjustments
In September 2015, the Financial Accounting Standards Board, or FASB, issued ASU No. 2015-16, Business Combinations - Simplifying the Accounting for Measurement Period Adjustments (Topic 805): The amendments in this ASU No. 2015-16 eliminate the requirement to retrospectively adjust the financial statements for measurement-period adjustments as if they were known at the acquisition date, but are recognized in the reporting period in which they are determined. Additional disclosures are required about the impact on current-period income statement line items of adjustments that would have been recognized in prior periods if that information had been revised. The measurement period is a reasonable time period after the acquisition date when the acquirer may adjust the provisional amounts recognized for a business combination if the necessary information is not available by the end of the reporting period in which the acquisition occurs. The measurement periods cannot continue for more than one year from the acquisition date. The standard is effective for annual periods and interim periods beginning after December 15, 2015. The adoption of this ASU had no impact on our results of operations or financial position.
Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Fees Paid in a Cloud Computing Arrangement
In April 2015, the FASB issued ASU No. 2015-05, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Fees Paid in a Cloud Computing Arrangement. The main provisions of ASU No. 2015-05 provide a basis for evaluating whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, then the arrangement should be accounted for as a service contract. The standard is effective for annual periods and interim periods beginning after December 15, 2015. The adoption of this ASU had no impact on our results of operations or financial position.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 1. BASIS OF PRESENTATION - continued
Interest - Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs
In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. The amendments in this ASU require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The standard is required to be adopted by public business entities in annual periods beginning on or after December 15, 2015. In September 2015, the FASB issued ASU No. 2015-15, Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. ASU No. 2015-15 amends the Securities and Exchange Commission (SEC) Content in Subtopic 835-30 by adding SEC paragraph 835-30-S35-1, Interest-Imputation of Interest Subsequent Measurement and paragraph 830-30-S45-1, Other Presentation Matters. These paragraphs were added because ASU No. 2015-03 issued in April 2015 does not address presentation or subsequent measurement of debt issuance costs related to "line-of-credit arrangements." The adoption of this ASU had no material impact on our results of operations or financial position.
Consolidation: Amendments to the Consolidation Analysis
In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. The amendments in this ASU affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. Specifically, the amendments: 1) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities, or VIEs, or voting interest entities; 2) eliminate the presumption that a general partner should consolidate a limited partnership; 3) affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and 4) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2A-7 of the Investment Company Act of 1940 for registered money market funds. The amendments in this ASU are effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. The adoption of this ASU had no impact on our results of operations or financial position.
Income Statement - Extraordinary and Unusual Items: Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary
In January 2015, the FASB issued ASU No. 2015-01, Income Statement - Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary. The amendments in this ASU No. 2015-01 eliminate from GAAP the concept of extraordinary items and eliminate the requirements for reporting entities to consider whether an underlying event or transaction is extraordinary. The presentation and disclosure guidance for items that are unusual in nature or occur infrequently will be retained and will be expanded to include items that are both unusual in nature and infrequently occurring. The standard is required to be adopted by public business entities in annual periods beginning on or after December 15, 2015. The adoption of this ASU had no impact on our results of operations or financial position.
Recently Issued Accounting Standards Updates not yet Adopted
Stock Compensation - Improvements to Employee Share-Based Payment Accounting
On March 31, 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting, which is intended to improve the accounting for share-based payment transactions as part of the FASB's simplification initiative. The ASU changes seven aspects of the accounting for share-based payment award transactions, including; (1) accounting for income taxes; (2) classification of excess tax benefits on the statement of cash flows; (3) forfeitures; (4) minimum statutory tax withholding requirements; (5) classification of employee taxes paid on the statement of cash flows when an employer withholds shares for tax-withholding purposes; (6) practical expedient -- expected term (nonpublic only); and (7) intrinsic value (nonpublic only). This ASU is effective for fiscal years beginning after December 15, 2016 and interim periods within those years for public business entities. Early adoption is permitted in any interim or annual period provided that the entire ASU is adopted. We do not expect that this ASU would have a material impact on our results of operations and financial position.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 1. BASIS OF PRESENTATION - continued
Equity Method and Joint Ventures - Simplifying the Transition to the Equity Method of Accounting
In March 2016, the FASB issued ASU No. 2016-07, Simplifying the Transition to the Equity Method of Accounting, which eliminates the requirement for an investor to retroactively apply the equity method when its increase in ownership interest (or degree of influence) in an investee triggers equity method accounting. This ASU is effective for annual and interim periods in fiscal years beginning after December 15, 2016. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. We do not expect that this ASU would have a material impact on our results of operations and financial position.
Derivatives and Hedging - Contingent Put and Call Options in Debt Instruments
In March 2016, the FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments, which clarifies that determining whether the economic characteristics of a put or call are "clearly and closely related" to its debt host requires only an assessment of the four-step decision sequence outlined in FASB ASC paragraph 815-15-25-24. Additionally, entities are not required to separately assess whether the contingency itself is clearly and closely related. This ASU is effective for annual and interim periods in fiscal years beginning after December 15, 2016. Early adoption of this ASU is permitted. We do not expect that this ASU would have a material impact on our results of operations and financial position.
Leases - Section A-Amendments to the FASB Accounting Standards Codification, Section B-Conforming Amendments Related to Leases and Section C-Background Information and Basis for Conclusions
In February 2016, the FASB issued ASU No. 2016-02, Leases, which, requires lessees to recognize a right-to-use asset and a lease obligation for all leases on the balance sheet. Lessor accounting remains substantially similar to current GAAP. ASU 2016-02 supersedes Topic 840, Leases. This ASU is effective for annual and interim periods in fiscal years beginning after December 15, 2018. ASU 2016-02 mandates a modified retrospective transition method for all entities. Early adoption of this ASU is permitted. We anticipate that this ASU would have a significant impact on our financial statements as it relates to the recognition of right-to-use assets and lease obligations on our Consolidated Balance Sheet. However, we do not expect that this ASU would have a material impact on our Consolidated Statement of Comprehensive Income.
Accounting for Financial Instruments - Overall: Classification and Measurement
In January 2016, the FASB issued ASU No. 2016-01, Accounting for Financial Instruments - Overall: Classification and Measurement (Subtopic 825-10). Amendments within ASU No. 2016-01 that relate to non-public entities have been excluded from this presentation. The amendments in this ASU No. 2016-01 address the following: 1) require equity investments to be measured at fair value with changes in fair value recognized in net income; 2) simplify the impairment assessment of equity investments without readily-determinable fair values by requiring a qualitative assessment to identify impairment; 3) eliminate the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; 4) require entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; 5) require separate presentation in other comprehensive income for the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; 6) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and 7) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity's other deferred tax assets.
We anticipate that this ASU would have a significant impact on our financial statements and disclosures primarily as it relates to recognizing the fair value changes for equity securities in net income rather than an adjustment to equity through other comprehensive income.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 1. BASIS OF PRESENTATION - continued
Revenue from Contracts with Customers
In April 2016, the FASB issued ASU No. 2016-10, Identifying Performance Obligations and Licensing, as an amendment to ASU No. 2014-09 to improve Topic 606, Revenue from Contracts with Customers, by reducing: 1. The potential for diversity in practice at initial application, and 2. The cost and complexity of applying Topic 606 both at transition and on an ongoing basis.
In March 2016, the FASB issued ASU No. 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net), as an amendment to ASU No. 2014-09 to improve Topic 606, Revenue from Contracts with Customers by reducing: 1. The potential for diversity in practice arising from inconsistent and application of the principal versus agent guidance, and 2. The cost and complexity of applying Topic 606 both at transition and on an ongoing basis.
The effective date and transition requirements for the amendments in both of these Updates are the same as the effective date and transition requirements in Topic 606 (and any other Topic amended by Update 2014-09). ASU 2015-14.
In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date. This ASU defers the effective date of ASU No. 2014-09 for all entities by one year. The new revenue pronouncement creates a single source of revenue guidance for all companies in all industries and is more principles-based than current revenue guidance. The pronouncement provides a five-step model for a company to recognize revenue when it transfers control of goods or services to customers at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. The five steps are: (1) identify the contract with the customer; (2) identify the separate performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the separate performance obligations; and (5) recognize revenue when each performance obligation is satisfied. The Update is effective for interim and annual reporting periods in fiscal years beginning after December 15, 2017. Early adoption is permitted as of the original effective date for interim and annual reporting periods in fiscal years beginning after December 15, 2016. We do not expect that this ASU would have a material impact on our results of operations and financial position.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 2. BUSINESS COMBINATIONS
On March 4, 2015, we completed the acquisition of 100 percent of the voting shares of Integrity Bancshares, Inc., or Integrity, located in Camp Hill, Pennsylvania, in a tax-free reorganization transaction structured as a merger of Integrity with and into S&T, with S&T being the surviving entity. As a result of the Integrity merger, or the Merger, Integrity Bank, the wholly owned subsidiary bank of Integrity, became a separate wholly owned subsidiary bank of S&T. The merger of Integrity Bank into S&T Bank, with S&T Bank surviving the merger, and related system conversion occurred on May 8, 2015.
Integrity shareholders were entitled to elect to receive for each share of Integrity common stock either $52.50 in cash or 2.0627 shares of S&T common stock subject to allocation and proration procedures in the merger agreement. The total purchase price was approximately $172.0 million which included $29.5 million of cash and 4,933,115 S&T common shares at a fair value of $28.88 per share. The fair value of $28.88 per share of S&T common stock was based on the March 4, 2015 closing price.
The Merger was accounted for under the acquisition method of accounting and our Consolidated Financial Statements include all Integrity Bank transactions from March 4, 2015, until it was merged into S&T Bank on May 8, 2015. The assets acquired and liabilities assumed were recorded at their respective fair values and represent management’s estimates based on available information. Purchase accounting guidance allows for a reasonable period of time following an acquisition for the acquirer to obtain the information necessary to complete the accounting for a business combination. This period is known as the measurement period. At the end of the measurement period, $1.1 million in purchase accounting adjustments were recognized that increased goodwill. The measurement period adjustments primarily related to changes to provisional amounts, an $0.8 million reduction in the fair value of land and $0.3 million in deferred taxes.
Goodwill of $115.9 million was calculated as the excess of the consideration exchanged over the fair value of the identifiable net assets acquired. The goodwill arising from the Merger consists largely of the synergies and economies of scale expected from combining the operations of S&T and Integrity. All of the goodwill was assigned to our Community Banking segment. The goodwill recognized will not be deductible for tax purposes.
The following table summarizes total consideration, assets acquired and liabilities assumed from the Merger:

(dollars in thousands) |
Consideration Paid |
Cash | $ | 29,510 |
Common stock | 142,469 |
Fair Value of Total Consideration | $ | 171,979 |
Fair Value of Assets Acquired |
Cash and cash equivalents | $ | 13,163 |
Securities and other investments | 11,502 |
Loans | 788,687 |
Bank owned life insurance | 15,974 |
Premises and equipment | 10,855 |
Core deposit intangible | 5,713 |
Other assets | 19,088 |
Total Assets Acquired | 864,982 |
Fair Value of Liabilities Assumed |
Deposits | 722,308 |
Borrowings | 82,286 |
Other liabilities | 4,259 |
Total Liabilities Assumed | 808,853 |
Total Fair Value of Identifiable Net Assets | 56,129 |
Goodwill | $ | 115,850 |

Loans acquired in the Merger were recorded at fair value with no carryover of the related Allowance for Loan Losses, or ALL. Determining the fair value of the loans involves estimating the amount and timing of principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. The fair value of the loans acquired was $788.7 million net of a $14.8 million discount. The discount may be accreted to interest income over the remaining contractual life of the loans. Acquired loans included $331.6 million of Commercial Real Estate, or CRE, $184.2
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 2. BUSINESS COMBINATIONS - continued
million of Commercial and Industrial, or C&I, $92.4 million of commercial construction, $116.9 million of residential mortgage, $25.6 million of home equity, $36.1 million of installment and other consumer and $1.9 million of consumer construction.
Direct costs related to the Merger were expensed as incurred. During 2015, we recognized $3.2 million of merger related expenses, including $1.3 million for data processing contract termination and system conversion costs, $1.2 million in legal and professional expenses, $0.4 million in severance payments and $0.3 million in other expenses.
NOTE 3. EARNINGS PER SHARE
The following table reconciles the numerators and denominators of basic and diluted earnings per share for the periods presented:

| Three Months Ended March 31,
(in thousands, except shares and per share data) | 2016 |  | 2015
Numerator for Earnings per Share—Basic: |  |  |
Net income | $ | 16,093 |  |  | $ | 12,835 |
Less: Income allocated to participating shares | 41 |  |  | 46 |
Net Income Allocated to Shareholders | $ | 16,052 |  |  | $ | 12,789 |
Numerator for Earnings per Share—Diluted: |  |  |
Net income | 16,093 |  |  | 12,835 |
Net Income Available to Shareholders | $ | 16,093 |  |  | $ | 12,835 |
Denominators for Earnings per Share: |  |  |
Weighted Average Shares Outstanding—Basic | 34,661,016 |  |  | 31,232,075 |
Add: Potentially dilutive shares | 78,498 |  |  | 28,873 |
Denominator for Treasury Stock Method—Diluted | 34,739,514 |  |  | 31,260,948 |
Weighted Average Shares Outstanding—Basic | 34,661,016 |  |  | 31,232,075 |
Add: Average participating shares outstanding | 88,265 |  |  | 111,774 |
Denominator for Two-Class Method—Diluted | 34,749,281 |  |  | 31,343,849 |
Earnings per share—basic | $ | 0.46 |  |  | $ | 0.41 |
Earnings per share—diluted | $ | 0.46 |  |  | $ | 0.41 |
Warrants considered anti-dilutive excluded from potentially dilutive shares - exercise price $31.53 per share, expires January 2019 | 517,012 |  |  | 517,012 |
Stock options considered anti-dilutive excluded from potentially dilutive shares | — |  |  | 155,500 |
Restricted stock considered anti-dilutive excluded from potentially dilutive shares | 81,840 |  |  | 82,901 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 4. FAIR VALUE MEASUREMENT
We use fair value measurements when recording and disclosing certain financial assets and liabilities. Securities available-for-sale, trading assets and derivative financial instruments are recorded at fair value on a recurring basis. Additionally, from time to time, we may be required to record other assets at fair value on a nonrecurring basis, such as loans held for sale, impaired loans, other real estate owned, or OREO, and other repossessed assets, mortgage servicing rights, or MSRs, and certain other assets.
Fair value is the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants at the measurement date. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets or liabilities; it is not a forced transaction. In determining fair value, we use various valuation approaches, including market, income and cost approaches. The fair value standard establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing an asset or liability, which is developed, based on market data we have obtained from independent sources. Unobservable inputs reflect our estimates of assumptions that market participants would use in pricing an asset or liability, which are developed based on the best information available in the circumstances.
The fair value hierarchy gives the highest priority to unadjusted quoted market prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The fair value hierarchy is broken down into three levels based on the reliability of inputs as follows:
Level 1: valuation is based upon unadjusted quoted market prices for identical instruments traded in active markets.
Level 2: valuation is based upon quoted market prices for similar instruments traded in active markets, quoted market prices for identical or similar instruments traded in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by market data.
Level 3: valuation is derived from other valuation methodologies, including discounted cash flow models and similar techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in determining fair value.
A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our policy is to recognize transfers between any of the fair value hierarchy levels at the end of the reporting period in which the transfer occurred.
The following are descriptions of the valuation methodologies that we use for financial instruments recorded at fair value on either a recurring or nonrecurring basis.
Recurring Basis
Securities Available-for-Sale
Securities available-for-sale include both debt and equity securities. We obtain fair values for debt securities from a third-party pricing service which utilizes several sources for valuing fixed-income securities. We validate prices received from our pricing service through comparison to a secondary pricing service and broker quotes. We review the methodologies of the pricing service which provides us with a sufficient understanding of the valuation models, assumptions, inputs and pricing to reasonably measure the fair value of our debt securities. The market evaluation sources for debt securities include observable inputs rather than significant unobservable inputs and are classified as Level 2. The service provider utilizes pricing models that vary by asset class and include available trade, bid and other market information. Generally, the methodologies include broker quotes, proprietary models and vast descriptive terms and conditions databases, as well as extensive quality control programs.
Marketable equity securities that have an active, quotable market are classified as Level 1. Marketable equity securities that are quotable, but are thinly traded or inactive, are classified as Level 2. Marketable equity securities that are not readily traded and do not have a quotable market are classified as Level 3.
Trading Assets
We use quoted market prices to determine the fair value of our trading assets. Our trading assets are held in a Rabbi Trust under a deferred compensation plan and are invested in readily quoted mutual funds. Accordingly, these assets are classified as Level 1.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 4. FAIR VALUE MEASUREMENTS – continued
Derivative Financial Instruments
We use derivative instruments, including interest rate swaps for commercial loans with our customers, interest rate lock commitments and the sale of mortgage loans in the secondary market. We calculate the fair value for derivatives using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. Each valuation considers the contractual terms of the derivative, including the period to maturity, and uses observable market based inputs, such as interest rate curves and implied volatilities. Accordingly, derivatives are classified as Level 2. We incorporate credit valuation adjustments into the valuation models to appropriately reflect both our own nonperformance risk and the respective counterparties' nonperformance risk in calculating fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements and collateral postings.
Nonrecurring Basis
Loans Held for Sale
Loans held for sale consist of 1-4 family residential loans originated for sale in the secondary market and, from time to time, certain loans transferred from the loan portfolio to loans held for sale, all of which are carried at the lower of cost or fair value. The fair value of 1-4 family residential loans is based on the principal or most advantageous market currently offered for similar loans using observable market data. The fair value of the loans transferred from the loan portfolio is based on the amounts offered for these loans in currently pending sales transactions. Loans held for sale carried at fair value are classified as Level 3.
Impaired Loans
Impaired loans are carried at the lower of carrying value or fair value. Fair value is determined as the recorded investment balance less any specific reserve. We establish a specific reserves based on the following three impairment methods: 1) the present value of expected future cash flows discounted at the loan’s original effective interest rate, 2) the loan’s observable market price or 3) the fair value of the collateral less estimated selling costs when the loan is collateral dependent and we expect to liquidate the collateral. However, if repayment is expected to come from the operation of the collateral, rather than liquidation, then we do not consider estimated selling costs in determining the fair value of the collateral. Collateral values are generally based upon appraisals by approved, independent state certified appraisers. Appraisals may be discounted based on our historical knowledge, changes in market conditions from the time of appraisal or our knowledge of the borrower and the borrower’s business. Impaired loans carried at fair value are classified as Level 3.
OREO and Other Repossessed Assets
OREO and other repossessed assets obtained in partial or total satisfaction of a loan are recorded at the lower of recorded investment in the loan or fair value less cost to sell. Subsequent to foreclosure, these assets are carried at the lower of the amount recorded at acquisition date or fair value less cost to sell. Accordingly, it may be necessary to record nonrecurring fair value adjustments. Fair value, when recorded, is generally based upon appraisals by approved, independent state certified appraisers. Like impaired loans, appraisals on OREO may be discounted based on our historical knowledge, changes in market conditions from the time of appraisal or other information available to us. OREO and other repossessed assets carried at fair value are classified as Level 3.
Mortgage Servicing Rights
The fair value of MSRs is determined by calculating the present value of estimated future net servicing cash flows, considering expected mortgage loan prepayment rates, discount rates, servicing costs and other economic factors, which are determined based on current market conditions. The expected rate of mortgage loan prepayments is the most significant factor driving the value of MSRs. MSRs are considered impaired if the carrying value exceeds fair value. The valuation model includes significant unobservable inputs; therefore, MSRs are classified as Level 3.
Other Assets
We measure certain other assets at fair value on a nonrecurring basis. Fair value is based on the application of lower of cost or fair value accounting, or write-downs of individual assets. Valuation methodologies used to measure fair value are consistent with overall principles of fair value accounting and consistent with those described above.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 4. FAIR VALUE MEASUREMENTS – continued
Financial Instruments
In addition to financial instruments recorded at fair value in our financial statements, fair value accounting guidance requires disclosure of the fair value of all of an entity’s assets and liabilities that are considered financial instruments. The majority of our assets and liabilities are considered financial instruments. Many of these instruments lack an available trading market as characterized by a willing buyer and willing seller engaged in an exchange transaction. Also, it is our general practice and intent to hold our financial instruments to maturity and to not engage in trading or sales activities with respect to such financial instruments. For fair value disclosure purposes, we substantially utilize the fair value measurement criteria as required and explained above. In cases where quoted fair values are not available, we use present value methods to determine the fair value of our financial instruments.
Cash and Cash Equivalents
The carrying amounts reported in the Consolidated Balance Sheets for cash and due from banks, including interest-bearing deposits, approximate fair value.
Loans
The fair value of variable rate performing loans that may reprice frequently at short-term market rates is based on carrying values adjusted for credit risk. The fair value of variable rate performing loans that reprice at intervals of one year or longer, such as adjustable rate mortgage products, is estimated using discounted cash flow analyses that utilize interest rates currently being offered for similar loans and adjusted for credit risk. The fair value of fixed rate performing loans is estimated using a discounted cash flow analysis that utilizes interest rates currently being offered for similar loans and adjusted for credit risk. The fair value of nonperforming loans is the carrying value less any specific reserve on the loan if it is impaired. The carrying amount of accrued interest approximates fair value.
Bank Owned Life Insurance
Fair value approximates net cash surrender value of bank owned life insurance.
Federal Home Loan Bank, or FHLB, and Other Restricted Stock
It is not practical to determine the fair value of our FHLB and other restricted stock due to the restrictions placed on the transferability of these stocks; it is presented at carrying value.
Deposits
The fair values disclosed for deposits without defined maturities (e.g., noninterest and interest-bearing demand, money market and savings accounts) are by definition equal to the amounts payable on demand. The carrying amounts for variable rate, fixed-term time deposits approximate their fair values. Estimated fair values for fixed rate and other time deposits are based on discounted cash flow analysis using interest rates currently offered for time deposits with similar terms. The carrying amount of accrued interest approximates fair value.
Short-Term Borrowings
The carrying amounts of securities sold under repurchase agreements, or REPOs, and other short-term borrowings approximate their fair values.
Long-Term Borrowings
The fair values disclosed for fixed rate long-term borrowings are determined by discounting their contractual cash flows using current interest rates for long-term borrowings of similar remaining maturities. The carrying amounts of variable rate long-term borrowings approximate their fair values.
Junior Subordinated Debt Securities
The variable rate junior subordinated debt securities reprice quarterly; therefore, the carrying values approximate their fair values.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 4. FAIR VALUE MEASUREMENTS – continued
Loan Commitments and Standby Letters of Credit
Off-balance sheet financial instruments consist of commitments to extend credit and letters of credit. Except for interest rate lock commitments, estimates of the fair value of these off-balance sheet items are not made because of the short-term nature of these arrangements and the credit standing of the counterparties.
Other
Estimates of fair value are not made for items that are not defined as financial instruments, including such items as our core deposit intangibles and the value of our trust operations.
Assets and Liabilities Recorded at Fair Value on a Recurring Basis
The following tables present our assets and liabilities that are measured at fair value on a recurring basis by fair value hierarchy level at March 31, 2016 and December 31, 2015. There were no transfers between Level 1 and Level 2 for items measured at fair value on a recurring basis during the periods presented.

| March 31, 2016
(dollars in thousands) | Level 1 | Level 2 | Level 3 | Total
ASSETS |  |  |  |
Securities available-for-sale: |  |  |  |
U.S. Treasury securities | $ | — |  | $ | 15,067 |  | $ | — |  | $ | 15,067 |
Obligations of U.S. government corporations and agencies | — |  | 271,540 |  | — |  | 271,540 |
Collateralized mortgage obligations of U.S. government corporations and agencies | — |  | 137,330 |  | — |  | 137,330 |
Residential mortgage-backed securities of U.S. government corporations and agencies | — |  | 39,285 |  | — |  | 39,285 |
Commercial mortgage-backed securities of U.S. government corporations and agencies | — |  | 70,664 |  | — |  | 70,664 |
Obligations of states and political subdivisions | — |  | 134,382 |  | — |  | 134,382 |
Marketable equity securities | — |  | 8,953 |  | — |  | 8,953 |
Total securities available-for-sale | — |  | 677,221 |  | — |  | 677,221 |
Trading securities held in a Rabbi Trust | 4,069 |  | — |  | — |  | 4,069 |
Total securities | 4,069 |  | 677,221 |  | — |  | 681,290 |
Derivative financial assets: |  |  |  |
Interest rate swaps | — |  | 15,281 |  | — |  | 15,281 |
Interest rate lock commitments | — |  | 526 |  | — |  | 526 |
Total Assets | $ | 4,069 |  | $ | 693,028 |  | $ | — |  | $ | 697,097 |
LIABILITIES |  |  |  |
Derivative financial liabilities: |  |  |  |
Interest rate swaps | $ | — |  | $ | 15,165 |  | $ | — |  | $ | 15,165 |
Forward sale contracts | — |  | 72 |  | — |  | 72 |
Total Liabilities | $ | — |  | $ | 15,237 |  | $ | — |  | $ | 15,237 |

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 4. FAIR VALUE MEASUREMENTS – continued

| December 31, 2015
(dollars in thousands) | Level 1 | Level 2 | Level 3 | Total
ASSETS |  |  |  |
Securities available-for-sale: |  |  |  |
U.S. Treasury securities | $ | — |  | $ | 14,941 |  | $ | — |  | $ | 14,941 |
Obligations of U.S. government corporations and agencies | — |  | 263,303 |  | — |  | 263,303 |
Collateralized mortgage obligations of U.S. government corporations and agencies | — |  | 128,835 |  | — |  | 128,835 |
Residential mortgage-backed securities of U.S. government corporations and agencies | — |  | 40,125 |  | — |  | 40,125 |
Commercial mortgage-backed securities of U.S. government corporations and agencies | — |  | 69,204 |  | — |  | 69,204 |
Obligations of states and political subdivisions | — |  | 134,886 |  | — |  | 134,886 |
Marketable equity securities | — |  | 9,669 |  | — |  | 9,669 |
Total securities available-for-sale | — |  | 660,963 |  | — |  | 660,963 |
Trading securities held in a Rabbi Trust | 4,021 |  | — |  | — |  | 4,021 |
Total securities | 4,021 |  | 660,963 |  | — |  | 664,984 |
Derivative financial assets: |  |  |  |
Interest rate swaps | — |  | 11,295 |  | — |  | 11,295 |
Interest rate lock commitments | — |  | 261 |  | — |  | 261 |
Total Assets | $ | 4,021 |  | $ | 672,519 |  | $ | — |  | $ | 676,540 |
LIABILITIES |  |  |  |
Derivative financial liabilities: |  |  |  |
Interest rate swaps | $ | — |  | $ | 11,276 |  | $ | — |  | $ | 11,276 |
Forward sale contracts | — |  | 5 |  | — |  | 5 |
Total Liabilities | $ | — |  | $ | 11,281 |  | $ | — |  | $ | 11,281 |

We classify financial instruments as Level 3 when valuation models are used because significant inputs are not observable in the market.
We may be required to measure certain assets and liabilities on a nonrecurring basis. Nonrecurring assets are recorded at the lower of cost or fair value in our financial statements. There were no liabilities measured at fair value on a nonrecurring basis at either March 31, 2016 or December 31, 2015. The following table presents our assets that are measured at fair value on a nonrecurring basis by the fair value hierarchy level as of the dates presented:

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Level 1 | Level 2 | Level 3 | Total |  | Level 1 | Level 2 | Level 3 | Total
ASSETS(1) |  |  |  |  |  |  |  |  |
Loans held for sale | $ | — |  | $ | — |  | $ | — |  | $ | — |  |  | $ | — |  | $ | — |  | $ | — |  | $ | — |
Impaired loans | — |  | — |  | 16,562 |  | 16,562 |  |  | — |  | — |  | 9,373 |  | 9,373 |
Other real estate owned | — |  | — |  | 248 |  | 248 |  |  | — |  | — |  | 158 |  | 158 |
Mortgage servicing rights | — |  | — |  | 3,112 |  | 3,112 |  |  | — |  | — |  | 3,396 |  | 3,396 |
Total Assets | $ | — |  | $ | — |  | $ | 19,922 |  | $ | 19,922 |  |  | $ | — |  | $ | — |  | $ | 12,927 |  | $ | 12,927 |
(1)This table presents only the nonrecurring items that are recorded at fair value in our financial statements.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 4. FAIR VALUE MEASUREMENTS – continued
The carrying values and fair values of our financial instruments at March 31, 2016 and December 31, 2015 are presented in the following tables:

| Carrying Value(1) | Fair Value Measurements at March 31, 2016
(dollars in thousands) | Total | Level 1 | Level 2 | Level 3
ASSETS |  |  |  |  |
Cash and due from banks, including interest-bearing deposits | $ | 121,669 |  | $ | 121,669 |  | $ | 121,669 |  | $ | — |  | $ | — |
Securities available-for-sale | 677,221 |  | 677,221 |  | — |  | 677,221 |  | — |
Loans held for sale | 11,739 |  | 12,116 |  | — |  | — |  | 12,116 |
Portfolio loans, net of unearned income | 5,176,748 |  | 5,163,461 |  | — |  | — |  | 5,163,461 |
Bank owned life insurance | 70,684 |  | 70,684 |  | — |  | 70,684 |  | — |
FHLB and other restricted stock | 23,337 |  | 23,337 |  | — |  | — |  | 23,337 |
Trading securities held in a Rabbi Trust | 4,069 |  | 4,069 |  | 4,069 |  | — |  | — |
Mortgage servicing rights | 3,112 |  | 3,112 |  | — |  | — |  | 3,112 |
Interest rate swaps | 15,281 |  | 15,281 |  | — |  | 15,281 |  | — |
Interest rate lock commitments | 526 |  | 526 |  | — |  | 526 |  | — |
LIABILITIES |  |  |  |  |
Deposits | $ | 5,017,925 |  | $ | 5,025,397 |  | $ | — |  | $ | — |  | $ | 5,025,397 |
Securities sold under repurchase agreements | 60,025 |  | 60,025 |  | — |  | — |  | 60,025 |
Short-term borrowings | 355,000 |  | 355,000 |  | — |  | — |  | 355,000 |
Long-term borrowings | 116,468 |  | 117,429 |  | — |  | — |  | 117,429 |
Junior subordinated debt securities | 45,619 |  | 45,619 |  | — |  | — |  | 45,619 |
Interest rate swaps | 15,165 |  | 15,165 |  | — |  | 15,165 |  | — |
Forward sale contracts | 72 |  | 72 |  | — |  | 72 |  | — |
(1) As reported in the Consolidated Balance Sheets |  |  |  |  |

| Carrying Value(1) | Fair Value Measurements at December 31, 2015
(dollars in thousands) | Total | Level 1 | Level 2 | Level 3
ASSETS |  |  |  |  |
Cash and due from banks, including interest-bearing deposits | $ | 99,399 |  | $ | 99,399 |  | $ | 99,399 |  | $ | — |  | $ | — |
Securities available-for-sale | 660,963 |  | 660,963 |  | — |  | 660,963 |  | — |
Loans held for sale | 35,321 |  | 35,500 |  | — |  | — |  | 35,500 |
Portfolio loans, net of unearned income | 5,027,612 |  | 5,001,004 |  | — |  | — |  | 5,001,004 |
Bank owned life insurance | 70,175 |  | 70,175 |  | — |  | 70,175 |  | — |
FHLB and other restricted stock | 23,032 |  | 23,032 |  | — |  | — |  | 23,032 |
Trading securities held in a Rabbi Trust | 4,021 |  | 4,021 |  | 4,021 |  | — |  | — |
Mortgage servicing rights | 3,237 |  | 3,396 |  | — |  | — |  | 3,396 |
Interest rate swaps | 11,295 |  | 11,295 |  | — |  | 11,295 |  | — |
Interest rate lock commitments | 261 |  | 261 |  | — |  | 261 |  | — |
LIABILITIES |  |  |  |  |
Deposits | $ | 4,876,611 |  | $ | 4,881,718 |  | $ | — |  | $ | — |  | $ | 4,881,718 |
Securities sold under repurchase agreements | 62,086 |  | 62,086 |  | — |  | — |  | 62,086 |
Short-term borrowings | 356,000 |  | 356,000 |  | — |  | — |  | 356,000 |
Long-term borrowings | 117,043 |  | 117,859 |  | — |  | — |  | 117,859 |
Junior subordinated debt securities | 45,619 |  | 45,619 |  | — |  | — |  | 45,619 |
Interest rate swaps | 11,276 |  | 11,276 |  | — |  | 11,276 |  | — |
Forward sale contracts | 5 |  | 5 |  | — |  | 5 |  | — |
(1) As reported in the Consolidated Balance Sheets |  |  |  |  |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 5. SECURITIES AVAILABLE-FOR-SALE
The following tables present the amortized cost and fair value of available-for-sale securities as of the dates presented:

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
U.S. Treasury securities | $ | 14,923 |  | $ | 144 |  | $ | — |  | $ | 15,067 |  |  | $ | 14,914 |  | $ | 27 |  | $ | — |  | $ | 14,941 |
Obligations of U.S. government corporations and agencies | 266,807 |  | 4,733 |  | — |  | 271,540 |  |  | 262,045 |  | 1,825 |  | (567 | ) | 263,303 |
Collateralized mortgage obligations of U.S. government corporations and agencies | 134,502 |  | 2,828 |  | — |  | 137,330 |  |  | 128,458 |  | 693 |  | (316 | ) | 128,835 |
Residential mortgage-backed securities of U.S. government corporations and agencies | 37,858 |  | 1,427 |  | — |  | 39,285 |  |  | 39,185 |  | 1,091 |  | (151 | ) | 40,125 |
Commercial mortgage-backed securities of U.S. government corporations and agencies | 69,445 |  | 1,226 |  | (7 | ) | 70,664 |  |  | 69,697 |  | 183 |  | (676 | ) | 69,204 |
Obligations of states and political subdivisions | 126,892 |  | 7,490 |  | — |  | 134,382 |  |  | 128,904 |  | 5,988 |  | (6 | ) | 134,886 |
Debt Securities | 650,427 |  | 17,848 |  | (7 | ) | 668,268 |  |  | 643,203 |  | 9,807 |  | (1,716 | ) | 651,294 |
Marketable equity securities | 7,579 |  | 1,374 |  | — |  | 8,953 |  |  | 7,579 |  | 2,090 |  | — |  | 9,669 |
Total | $ | 658,006 |  | $ | 19,222 |  | $ | (7 | ) | $ | 677,221 |  |  | $ | 650,782 |  | $ | 11,897 |  | $ | (1,716 | ) | $ | 660,963 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 5. SECURITIES AVAILABLE-FOR-SALE – continued
The following tables present the fair value and the age of gross unrealized losses by investment category as of the dates presented:

| March 31, 2016
| Less Than 12 Months |  | 12 Months or More |  | Total
(dollars in thousands) | Number of Securities | Fair Value |  | Unrealized Losses |  |  | Number of Securities | Fair Value |  | Unrealized Losses |  |  | Number of Securities | Fair Value |  | Unrealized Losses |
Obligations of U.S. government corporations and agencies | — | $ | — |  | $ | — |  |  | — | $ | — |  | $ | — |  |  | — | $ | — |  | $ | — |
Collateralized mortgage obligations of U.S. government corporations and agencies | — | — |  | — |  |  | — | — |  | — |  |  | — | — |  | — |
Residential mortgage-backed securities of U.S. government corporations and agencies | — | — |  | — |  |  | — | — |  | — |  |  | — | — |  | — |
Commercial mortgage-backed securities of U.S. government corporations and agencies | — | — |  | — |  |  | 1 | 9,637 |  | (7 | ) |  | 1 | 9,637 |  | (7 | )
Obligations of states and political subdivisions | — | — |  | — |  |  | — | — |  | — |  |  | — | — |  | — |
Debt Securities | — | — |  | — |  |  | 1 | 9,637 |  | (7 | ) |  | 1 | 9,637 |  | (7 | )
Total Temporarily Impaired Securities | — | $ | — |  | $ | — |  |  | 1 | $ | 9,637 |  | $ | (7 | ) |  | 1 | $ | 9,637 |  | $ | (7 | )

| December 31, 2015
| Less Than 12 Months |  | 12 Months or More |  | Total
(dollars in thousands) | Number of Securities | Fair Value |  | Unrealized Losses |  |  | Number of Securities | Fair Value |  | Unrealized Losses |  |  | Number of Securities | Fair Value |  | Unrealized Losses |
Obligations of U.S. government corporations and agencies | 10 | $ | 88,584 |  | $ | (379 | ) |  | 2 | $ | 14,542 |  | $ | (188 | ) |  | 12 | $ | 103,126 |  | $ | (567 | )
Collateralized mortgage obligations of U.S. government corporations and agencies | 6 | 61,211 |  | (316 | ) |  | — | — |  | — |  |  | 6 | 61,211 |  | (316 | )
Residential mortgage-backed securities of U.S. government corporations and agencies | 1 | 7,993 |  | (151 | ) |  | — | — |  | — |  |  | 1 | 7,993 |  | (151 | )
Commercial mortgage-backed securities of U.S. government corporations and agencies | 5 | 50,839 |  | (450 | ) |  | 1 | 9,472 |  | (226 | ) |  | 6 | 60,311 |  | (676 | )
Obligations of states and political subdivisions | 1 | 5,370 |  | (6 | ) |  | — | — |  | — |  |  | 1 | 5,370 |  | (6 | )
Debt Securities | 23 | 213,997 |  | (1,302 | ) |  | 3 | 24,014 |  | (414 | ) |  | 26 | 238,011 |  | (1,716 | )
Total Temporarily Impaired Securities | 23 | $ | 213,997 |  | $ | (1,302 | ) |  | 3 | $ | 24,014 |  | $ | (414 | ) |  | 26 | $ | 238,011 |  | $ | (1,716 | )

We do not believe any individual unrealized loss as of March 31, 2016 represents an other than temporary impairment, or OTTI. As of March 31, 2016, the unrealized loss on one debt security was primarily attributable to changes in interest rates and not related to the credit quality of the security. All debt securities are determined to be investment grade and are paying principal and interest according to the contractual terms of the security. There were no unrealized losses on marketable equity securities at either March 31, 2016 or December 31, 2015. We do not intend to sell and it is not more likely than not that we will be required to sell any of the securities in an unrealized loss position before recovery of their amortized cost.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 5. SECURITIES AVAILABLE-FOR-SALE – continued
The following table displays net unrealized gains and losses, net of tax on securities available for sale included in accumulated other comprehensive (loss)/income, for the periods presented:

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Net Unrealized Gains/ (Losses) |  |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Net Unrealized Gains/ (Losses) |
Total unrealized gains/(losses) on securities available-for-sale | $ | 19,222 |  | $ | (7 | ) | $ | 19,215 |  |  | $ | 11,897 |  | $ | (1,716 | ) | $ | 10,181 |
Income tax expense/(benefit) | 6,728 |  | (2 | ) | 6,726 |  |  | 4,164 |  | (601 | ) | 3,563 |
Net unrealized gains/(losses), net of tax included in accumulated other comprehensive income/(loss) | $ | 12,494 |  | $ | (5 | ) | $ | 12,489 |  |  | $ | 7,733 |  | $ | (1,115 | ) | $ | 6,618 |

The amortized cost and fair value of securities available-for-sale at March 31, 2016 by contractual maturity are included in the table below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

| March 31, 2016
(dollars in thousands) | Amortized Cost |  |  | Fair Value |
Obligations of the U.S. Treasury, U.S. government corporations and agencies, and obligations of states and political subdivisions |  |  |
Due in one year or less | $ | 46,963 |  |  | $ | 47,106 |
Due after one year through five years | 220,193 |  |  | 225,234 |
Due after five years through ten years | 66,133 |  |  | 68,646 |
Due after ten years | 75,333 |  |  | 80,003 |
| 408,622 |  |  | 420,989 |
Collateralized mortgage obligations of U.S. government corporations and agencies | 134,502 |  |  | 137,330 |
Residential mortgage-backed securities of U.S. government corporations and agencies | 37,858 |  |  | 39,285 |
Commercial mortgage-backed securities of U.S. government corporations and agencies | 69,445 |  |  | 70,664 |
Debt Securities | 650,427 |  |  | 668,268 |
Marketable equity securities | 7,579 |  |  | 8,953 |
Total | $ | 658,006 |  |  | $ | 677,221 |

At March 31, 2016 and December 31, 2015, securities with carrying values of $297.3 million and $278.4 million were pledged for various regulatory and legal requirements.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 6. LOANS AND LOANS HELD FOR SALE
Loans are presented net of unearned income of $3.7 million and $3.2 million at March 31, 2016 and December 31, 2015 and net of a discount related to purchase accounting fair value adjustments of $10.4 million and $10.9 million at March 31, 2016 and December 31, 2015. The following table indicates the composition of the acquired and originated loans as of the dates presented:

(dollars in thousands) | March 31, 2016 |  | December 31, 2015
Commercial |  |  |
Commercial real estate | $ | 2,260,231 |  |  | $ | 2,166,603 |
Commercial and industrial | 1,334,119 |  |  | 1,256,830 |
Commercial construction | 379,293 |  |  | 413,444 |
Total Commercial Loans | 3,973,643 |  |  | 3,836,877 |
Consumer |  |  |
Residential mortgage | 650,544 |  |  | 639,372 |
Home equity | 467,671 |  |  | 470,845 |
Installment and other consumer | 76,189 |  |  | 73,939 |
Consumer construction | 8,701 |  |  | 6,579 |
Total Consumer Loans | 1,203,105 |  |  | 1,190,735 |
Total Portfolio Loans | 5,176,748 |  |  | 5,027,612 |
Loans held for sale | 11,739 |  |  | 35,321 |
Total Loans | $ | 5,188,487 |  |  | $ | 5,062,933 |

The decrease in loans held for sale of $23.6 million primarily related to the sale of our credit card portfolio of $22.9 million and resulted in a $2.1 million gain for the three months ended March 31, 2016.
We attempt to limit our exposure to credit risk by diversifying our loan portfolio by segment, geography, collateral and industry and actively managing concentrations. When concentrations exist in certain segments, we mitigate this risk by monitoring the relevant economic indicators and internal risk rating trends and through stress testing of the loans in these segments. Total commercial loans represented 77 percent of total portfolio loans at March 31, 2016 and 76 percent of total portfolio loans at December 31, 2015. Within our commercial portfolio, the CRE and Commercial Construction portfolios combined comprised $2.6 billion or 66 percent of total commercial loans and 51 percent of total portfolio loans at March 31, 2016 and 67 percent of total commercial loans and 51 percent of total portfolio loans at December 31, 2015. Further segmentation of the CRE and Commercial Construction portfolios by industry and collateral type reveal no concentration in excess of seven percent of total loans at March 31, 2016 and December 31, 2015.
Our market area includes Pennsylvania and the contiguous states of Ohio, West Virginia, New York and Maryland. The majority of our commercial and consumer loans are made to businesses and individuals in this market area, resulting in a geographic concentration. We believe our knowledge and familiarity with customers and conditions locally outweighs this geographic concentration risk. The conditions of the local and regional economies are monitored closely through publicly available data as well as information supplied by our customers. Management believes underwriting guidelines, active monitoring of economic conditions and ongoing review by credit administration mitigates the concentration risk present in the loan portfolio. Our CRE and Commercial Construction portfolios have out-of-market exposure of 5.4 percent of the combined portfolio and 2.7 percent of total loans at March 31, 2016 and 5.8 percent of the combined portfolio and 3.0 percent of total loans at December 31, 2015.
Troubled debt restructurings, or TDRs, are loans where we, for economic or legal reasons related to a borrower’s financial difficulties, grant a concession to the borrower that we would not otherwise grant. We strive to identify borrowers in financial difficulty early and work with them to modify the terms before their loan reaches nonaccrual status. These modified terms generally include extensions of maturity dates at a stated interest rate lower than the current market rate for a new loan with similar risk characteristics, reductions in contractual interest rates or principal deferment. While unusual, there may be instances of principal forgiveness. These modifications are generally for longer term periods that would not be considered insignificant. Additionally, we classify loans where the debt obligation has been discharged through a Chapter 7 Bankruptcy and not reaffirmed as TDRs.
We individually evaluate all substandard commercial loans that have experienced a forbearance or change in terms agreement, as well as all substandard consumer and residential mortgage loans that entered into an agreement to modify their existing loan to determine if they should be designated as TDRs. All TDRs are considered to be impaired loans and will be reported as impaired loans for the remaining life of the loan, unless the restructuring agreement specifies an interest rate equal
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 6. LOANS AND LOANS HELD FOR SALE - continued
to or greater than the rate that would be accepted at the time of the restructuring for a new loan with comparable risk and it is fully expected that the remaining principal and interest will be collected according to the restructured agreement. Further, all impaired loans are reported as nonaccrual loans unless the loan is a TDR that has met the requirements to be returned to accruing status. TDRs can be returned to accruing status if the ultimate collectability of all contractual amounts due, according to the restructured agreement, is not in doubt and there is a period of a minimum of six months of satisfactory payment performance by the borrower either immediately before or after the restructuring.
The following table summarizes the restructured loans as of the dates presented:

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Performing TDRs | Nonperforming TDRs | Total TDRs |  | Performing TDRs | Nonperforming TDRs | Total TDRs
Commercial real estate | $ | 6,339 |  | $ | 3,747 |  | $ | 10,086 |  |  | $ | 6,822 |  | $ | 3,548 |  | $ | 10,370 |
Commercial and industrial | 6,280 |  | 1,695 |  | 7,975 |  |  | 6,321 |  | 1,570 |  | 7,891 |
Commercial construction | 4,367 |  | 1,742 |  | 6,109 |  |  | 5,013 |  | 1,265 |  | 6,278 |
Residential mortgage | 2,537 |  | 1,193 |  | 3,730 |  |  | 2,590 |  | 665 |  | 3,255 |
Home equity | 3,215 |  | 911 |  | 4,126 |  |  | 3,184 |  | 523 |  | 3,707 |
Installment and other consumer | 23 |  | 3 |  | 26 |  |  | 25 |  | 88 |  | 113 |
Total | $ | 22,761 |  | $ | 9,291 |  | $ | 32,052 |  |  | $ | 23,955 |  | $ | 7,659 |  | $ | 31,614 |

There were no TDRs returned to accruing status during the three months ended March 31, 2016 or three months ended March 31, 2015.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 6. LOANS AND LOANS HELD FOR SALE - continued
The following tables present the restructured loans during the periods presented:

| Three Months Ended March 31, 2016 |  | Three Months Ended March 31, 2015
(dollars in thousands) | Number of Loans | Pre-Modification Outstanding Recorded Investment(1) | Post-Modification Outstanding Recorded Investment(1) | Total Difference in Recorded Investment |  | Number of Loans | Pre-Modification Outstanding Recorded Investment(1) | Post-Modification Outstanding Recorded Investment(1) | Total Difference in Recorded Investment
Commercial real estate |  |  |  |  |  |  |  |  |
Principal deferral | — |  | $ | — |  | $ | — |  | $ | — |  |  | 2 |  | $ | 2,851 |  | $ | 2,851 |  | $ | — |
Chapter 7 bankruptcy(2) | 1 |  | 709 |  | 702 |  | (7 | ) |  | — |  | — |  | — |  | — |
Commercial and industrial |  |  |  |  |  |  |  |  |  |
Principal deferral | — |  | — |  | — |  | — |  |  | 6 |  | 661 |  | 661 |  | — |
Chapter 7 bankruptcy(2) | — |  | — |  | — |  | — |  |  | 1 |  | 3 |  | 1 |  | (2 | )
Maturity date extension | 2 |  | 625 |  | 605 |  | (20 | ) |  | 1 |  | 780 |  | 765 |  | (15 | )
Commercial Construction |  |  |  |  |  |  |  |  |  |
Principal deferral | — |  | — |  | — |  | — |  |  | 1 |  | 104 |  | 103 |  | (1 | )
Maturity date extension | 1 |  | 33 |  | 33 |  | — |  |  | — |  | — |  | — |  | — |
Residential mortgage |  |  |  |  |  |  |  |  |  |
Chapter 7 bankruptcy(2) | 3 |  | 221 |  | 219 |  | (2 | ) |  | — |  | — |  | — |  | — |
Maturity date extension | 1 |  | 483 |  | 483 |  | — |  |  | — |  | — |  | — |  | — |
Home equity |  |  |  |  |  |  |  |  |  |
Principal deferral | — |  | — |  | — |  | — |  |  | — |  | — |  | — |  | — |
Chapter 7 bankruptcy(2) | 5 |  | 245 |  | 243 |  | (2 | ) |  | 8 |  | 142 |  | 133 |  | (9 | )
Maturity date extension and interest rate reduction | 1 |  | 130 |  | 130 |  | — |  |  | — |  | — |  | — |  | — |
Maturity date extension | 2 |  | 200 |  | 199 |  | (1 | ) |  | 1 |  | 71 |  | 71 |  | — |
Total by Concession Type |  |  |  |  |  |  |  |  |  |  |  |  |
Principal deferral | — |  | $ | — |  | $ | — |  | $ | — |  |  | 9 |  | $ | 3,616 |  | $ | 3,615 |  | $ | (1 | )
Maturity date extension and interest rate reduction | 1 |  | 130 |  | 130 |  | — |  |  | — |  | — |  | — |  | — |
Chapter 7 bankruptcy(2) | 9 |  | 1,175 |  | 1,164 |  | (11 | ) |  | 9 |  | 145 |  | 134 |  | (11 | )
Maturity date extension | 6 |  | 1,341 |  | 1,320 |  | (21 | ) |  | 2 |  | 851 |  | 836 |  | (15 | )
Total | 16 |  | $ | 2,646 |  | $ | 2,614 |  | $ | (32 | ) |  | 20 |  | $ | 4,612 |  | $ | 4,585 |  | $ | (27 | )
(1) Excludes loans that were fully paid off or fully charged-off by period end. The pre-modification balance represents the balance outstanding prior to modification. The post-modification balance represents the outstanding balance at period end. (2) Chapter 7 bankruptcy loans where the debt has been legally discharged through the bankruptcy court and not reaffirmed.

For the three months ended March 31, 2016, we modified one C&I loan totaling $2.2 million that was not considered to be a TDR. The modification was not deemed a TDR since we were adequately compensated through additional collateral and a higher interest rate. As of March 31, 2016 we have no commitments to lend additional funds on any TDRs.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 6. LOANS AND LOANS HELD FOR SALE - continued
Defaulted TDRs are defined as loans having a payment default of 90 days or more after the restructuring takes place. The following tables present a summary of TDRs which defaulted during the periods presented that had been restructured within the last 12 months prior to defaulting:

| Defaulted TDRs
| March 31, 2016 |  | March 31, 2015
(dollars in thousands) | Number of Defaults | Recorded Investment |  |  | Number of Defaults | Recorded Investment |
Commercial real estate | — | $ | — |  |  | — | $ | — |
Commercial and Industrial | — | — |  |  | — | — |
Commercial construction | 1 | 616 |  |  | — | — |
Residential mortgage | — | — |  |  | 1 | 183 |
Home equity | — | — |  |  | 1 | 5 |
Installment and other consumer | — | — |  |  | — | — |
Consumer construction | — | — |  |  | — | — |
Total | 1 | $ | 616 |  |  | 2 | $ | 188 |

The following table is a summary of nonperforming assets as of the dates presented:

| Nonperforming Assets
(dollars in thousands) | March 31, 2016 |  | December 31, 2015
Nonperforming Assets |  |  |
Nonaccrual loans | $ | 42,543 |  |  | $ | 27,723 |
Nonaccrual TDRs | 9,291 |  |  | 7,659 |
Total nonaccrual loans | 51,834 |  |  | 35,382 |
OREO | 297 |  |  | 354 |
Total Nonperforming Assets | $ | 52,131 |  |  | $ | 35,736 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 7. ALLOWANCE FOR LOAN LOSSES
We maintain an allowance for loan losses, or ALL, at a level determined to be adequate to absorb estimated probable credit losses inherent in the loan portfolio as of the balance sheet date. We develop and document a systematic ALL methodology based on the following portfolio segments: 1) CRE, 2) C&I, 3) Commercial Construction, 4) Consumer Real Estate and 5) Other Consumer.
The following are key risks within each portfolio segment:
CRE—Loans secured by commercial purpose real estate, including both owner occupied properties and investment properties, for various purposes such as hotels, strip malls and apartments. Operations of the individual projects as well as global cash flows of the debtors are the primary sources of repayment for these loans. The condition of the local economy is an important indicator of risk, but there are also more specific risks depending on the collateral type as well as the business prospects of the lessee, if the project is not owner occupied.
C&I—Loans made to operating companies or manufacturers for the purpose of production, operating capacity, accounts receivable, inventory or equipment financing. Cash flow from the operations of the company is the primary source of repayment for these loans. The condition of the local economy is an important indicator of risk, but there are also more specific risks depending on the industry of the company. Collateral for these types of loans often does not have sufficient value in a distressed or liquidation scenario to satisfy the outstanding debt.
Commercial Construction—Loans made to finance construction of buildings or other structures, as well as to finance the acquisition and development of raw land for various purposes. While the risk of these loans is generally confined to the construction period, if there are problems, the project may not be complete, and as such, may not provide sufficient cash flow on its own to service the debt or have sufficient value in a liquidation to cover the outstanding principal. The condition of the local economy is an important indicator of risk, but there are also more specific risks depending on the type of project and the experience and resources of the developer.
Consumer Real Estate—Loans secured by first and second liens such as home equity loans, home equity lines of credit and 1-4 family residential mortgages, including purchase money mortgages. The primary source of repayment for these loans is the income and assets of the borrower. The condition of the local economy, in particular the unemployment rate, is an important indicator of risk for this segment. The state of the local housing market can also have a significant impact on this segment because low demand and/or declining home values can limit the ability of borrowers to sell a property and satisfy the debt.
Other Consumer—Loans made to individuals that may be secured by assets other than 1-4 family residences, as well as unsecured loans. This segment includes auto loans, unsecured loans and lines and credit cards. The primary source of repayment for these loans is the income and assets of the borrower. The condition of the local economy, in particular the unemployment rate, is an important indicator of risk for this segment. The value of the collateral, if there is any, is less likely to be a source of repayment due to less certain collateral values.
We further assess risk within each portfolio segment by pooling loans with similar risk characteristics. For the commercial loan classes, the most important indicator of risk is the internally assigned risk rating, including pass, special mention and substandard. Consumer loans are pooled by type of collateral, lien position and loan to value, or LTV, ratio for Consumer Real Estate loans. Historical loss rates are applied to these loan pools to determine the reserve for loans collectively evaluated for impairment.
The ALL methodology for groups of loans collectively evaluated for impairment is comprised of both a quantitative and qualitative analysis. A key assumption in the quantitative component of the reserve is the loss emergence period, or LEP. The LEP is an estimate of the average amount of time from the point at which a loss is incurred on a loan to the point at which the loss is confirmed. Another key assumption is the look-back period, or LBP, which represents the historical data period utilized to calculate loss rates.
Management monitors various credit quality indicators for both the commercial and consumer loan portfolios, including delinquency, nonperforming status and changes in risk ratings on a monthly basis.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 7. ALLOWANCE FOR LOAN LOSSES – continued
The following tables present the age analysis of past due loans segregated by class of loans as of the dates presented:

| March 31, 2016
(dollars in thousands) | Current | 30-59 Days Past Due | 60-89 Days Past Due | Nonaccrual | Total Past Due | Total Loans
Commercial real estate | $ | 2,238,144 |  | $ | 6,669 |  | $ | 174 |  | $ | 15,244 |  | $ | 22,087 |  | $ | 2,260,231 |
Commercial and industrial | 1,306,834 |  | 12,509 |  | 567 |  | 14,209 |  | 27,285 |  | 1,334,119 |
Commercial construction | 364,675 |  | 1,086 |  | 3,539 |  | 9,993 |  | 14,618 |  | 379,293 |
Residential mortgage | 636,328 |  | 1,749 |  | 3,455 |  | 9,012 |  | 14,216 |  | 650,544 |
Home equity | 460,203 |  | 3,754 |  | 447 |  | 3,267 |  | 7,468 |  | 467,671 |
Installment and other consumer | 75,741 |  | 297 |  | 42 |  | 109 |  | 448 |  | 76,189 |
Consumer construction | 8,701 |  | — |  | — |  | — |  | — |  | 8,701 |
Loans held for sale | 11,739 |  | — |  | — |  | — |  | — |  | 11,739 |
Totals | $ | 5,102,365 |  | $ | 26,064 |  | $ | 8,224 |  | $ | 51,834 |  | $ | 86,122 |  | $ | 5,188,487 |

| December 31, 2015
(dollars in thousands) | Current | 30-59 Days Past Due | 60-89 Days Past Due | Nonaccrual | Total Past Due | Total Loans
Commercial real estate | $ | 2,145,655 |  | $ | 11,602 |  | $ | 627 |  | $ | 8,719 |  | $ | 20,948 |  | $ | 2,166,603 |
Commercial and industrial | 1,244,802 |  | 2,453 |  | 296 |  | 9,279 |  | 12,028 |  | 1,256,830 |
Commercial construction | 401,084 |  | 3,517 |  | 90 |  | 8,753 |  | 12,360 |  | 413,444 |
Residential mortgage | 631,085 |  | 1,728 |  | 930 |  | 5,629 |  | 8,287 |  | 639,372 |
Home equity | 465,055 |  | 2,365 |  | 523 |  | 2,902 |  | 5,790 |  | 470,845 |
Installment and other consumer | 73,486 |  | 242 |  | 111 |  | 100 |  | 453 |  | 73,939 |
Consumer construction | 6,579 |  | — |  | — |  | — |  | — |  | 6,579 |
Loans held for sale | 35,179 |  | 94 |  | 48 |  | — |  | 142 |  | 35,321 |
Totals | $ | 5,002,925 |  | $ | 22,001 |  | $ | 2,625 |  | $ | 35,382 |  | $ | 60,008 |  | $ | 5,062,933 |

We continually monitor the commercial loan portfolio through an internal risk rating system. Loan risk ratings are assigned based upon the creditworthiness of the borrower and are reviewed on an ongoing basis according to our internal policies. Loans within the pass rating generally have a lower risk of loss than loans risk rated as special mention or substandard.
Our risk ratings are consistent with regulatory guidance and are as follows:
Pass—The loan is currently performing and is of high quality.
Special Mention—A special mention loan has potential weaknesses that warrant management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects or in the strength of our credit position at some future date. Economic and market conditions, beyond the borrower’s control, may in the future necessitate this classification.
Substandard—A substandard loan is not adequately protected by the net worth and/or paying capacity of the borrower or by the collateral pledged, if any. Substandard loans have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. These loans are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 7. ALLOWANCE FOR LOAN LOSSES – continued
The following tables present the recorded investment in commercial loan classes by internally assigned risk ratings as of the dates presented:

| March 31, 2016
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,179,599 |  | 96.4 | % |  | $ | 1,253,947 |  | 94.0 | % |  | $ | 340,469 |  | 89.8 | % |  | $ | 3,774,015 |  | 95.0 | %
Special mention | 26,788 |  | 1.2 | % |  | 28,517 |  | 2.1 | % |  | 20,362 |  | 5.4 | % |  | 75,667 |  | 1.9 | %
Substandard | 53,844 |  | 2.4 | % |  | 51,655 |  | 3.9 | % |  | 18,462 |  | 4.8 | % |  | 123,961 |  | 3.1 | %
Total | $ | 2,260,231 |  | 100 | % |  | $ | 1,334,119 |  | 100.0 | % |  | $ | 379,293 |  | 100.0 | % |  | $ | 3,973,643 |  | 100.0 | %
| December 31, 2015
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,094,851 |  | 96.7 | % |  | $ | 1,182,685 |  | 94.1 | % |  | $ | 375,808 |  | 90.9 | % |  | $ | 3,653,344 |  | 95.2 | %
Special mention | 19,938 |  | 0.9 | % |  | 43,896 |  | 3.5 | % |  | 19,846 |  | 4.8 | % |  | 83,680 |  | 2.2 | %
Substandard | 51,814 |  | 2.4 | % |  | 30,249 |  | 2.4 | % |  | 17,790 |  | 4.3 | % |  | 99,853 |  | 2.6 | %
Total | $ | 2,166,603 |  | 100.0 | % |  | $ | 1,256,830 |  | 100.0 | % |  | $ | 413,444 |  | 100.0 | % |  | $ | 3,836,877 |  | 100.0 | %

We monitor the delinquent status of the consumer portfolio on a monthly basis. Loans are considered nonperforming when interest and principal are 90 days or more past due or management has determined that a material deterioration in the borrower’s financial condition exists. The risk of loss is generally highest for nonperforming loans.
The following tables present the recorded investment in consumer loan classes by performing and nonperforming status as of the dates presented:

| March 31, 2016
(dollars in thousands) | Residential Mortgage | % of Total | Home Equity | % of Total | Installment and other consumer | % of Total | Consumer Construction | % of Total | Total | % of Total
Performing | $ | 641,532 |  | 98.6 | % | $ | 464,404 |  | 99.3 | % | $ | 76,080 |  | 99.9 | % | $ | 8,701 |  | 100.0 | % | $ | 1,190,717 |  | 99.0 | %
Nonperforming | 9,012 |  | 1.4 | % | 3,267 |  | 0.7 | % | 109 |  | 0.1 | % | — |  | — | % | 12,388 |  | 1.0 | %
Total | $ | 650,544 |  | 100.0 | % | $ | 467,671 |  | 100.0 | % | $ | 76,189 |  | 100.0 | % | $ | 8,701 |  | 100.0 | % | $ | 1,203,105 |  | 100.0 | %
| December 31, 2015
(dollars in thousands) | Residential Mortgage | % of Total | Home Equity | % of Total | Installment and other consumer | % of Total | Consumer Construction | % of Total | Total | % of Total
Performing | $ | 633,743 |  | 99.1 | % | $ | 467,943 |  | 99.4 | % | $ | 73,839 |  | 99.8 | % | $ | 6,579 |  | 100.0 | % | $ | 1,182,104 |  | 99.3 | %
Nonperforming | 5,629 |  | 0.9 | % | 2,902 |  | 0.6 | % | 100 |  | 0.2 | % | — |  | — | % | 8,631 |  | 0.7 | %
Total | $ | 639,372 |  | 100.0 | % | $ | 470,845 |  | 100.0 | % | $ | 73,939 |  | 100.0 | % | $ | 6,579 |  | 100.0 | % | $ | 1,190,735 |  | 100.0 | %

We individually evaluate all substandard and nonaccrual commercial loans greater than $0.5 million for impairment. Loans are considered to be impaired when based upon current information and events it is probable that we will be unable to collect all principal and interest payments due according to the original contractual terms of the loan agreement. All TDRs will be reported as an impaired loan for the remaining life of the loan, unless the restructuring agreement specifies an interest rate equal to or greater than the rate that would be accepted at the time of the restructuring for a new loan with comparable risk and it is expected that the remaining principal and interest will be fully collected according to the restructured agreement. For all TDRs, regardless of size, as well as all other impaired loans, we conduct further analysis to determine the probable loss and assign a specific reserve to the loan if deemed appropriate.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 7. ALLOWANCE FOR LOAN LOSSES – continued
The following tables summarize investments in loans considered to be impaired and related information on those impaired loans as of the dates presented:

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Recorded Investment | Unpaid Principal Balance | Related Allowance |  | Recorded Investment | Unpaid Principal Balance | Related Allowance
Without a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | $ | 18,505 |  | $ | 26,493 |  | $ | — |  |  | $ | 12,661 |  | $ | 13,157 |  | $ | — |
Commercial and industrial | 13,778 |  | 14,750 |  | — |  |  | 14,417 |  | 15,220 |  | — |
Commercial construction | 10,772 |  | 13,974 |  | — |  |  | 10,998 |  | 14,200 |  | — |
Consumer real estate | 11,038 |  | 11,703 |  | — |  |  | 6,845 |  | 7,521 |  | — |
Other consumer | 27 |  | 29 |  | — |  |  | 111 |  | 188 |  | — |
Total without a Related Allowance Recorded | 54,120 |  | 66,949 |  | — |  |  | 45,032 |  | 50,286 |  | — |
With a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | — |  | — |  | — |  |  | — |  | — |  | — |
Commercial and industrial | 4,850 |  | 5,356 |  | 2,027 |  |  | — |  | — |  | — |
Commercial construction | 1,116 |  | 1,966 |  | 154 |  |  | 500 |  | 1,350 |  | 3 |
Consumer real estate | 114 |  | 114 |  | 30 |  |  | 116 |  | 116 |  | 32 |
Other consumer | 2 |  | 2 |  | 2 |  |  | 2 |  | 2 |  | 2 |
Total with a Related Allowance Recorded | 6,082 |  | 7,438 |  | 2,213 |  |  | 618 |  | 1,468 |  | 37 |
Total: |  |  |  |  |  |  |
Commercial real estate | 18,505 |  | 26,493 |  | — |  |  | 12,661 |  | 13,157 |  | — |
Commercial and industrial | 18,628 |  | 20,106 |  | 2,027 |  |  | 14,417 |  | 15,220 |  | — |
Commercial construction | 11,888 |  | 15,940 |  | 154 |  |  | 11,498 |  | 15,550 |  | 3 |
Consumer real estate | 11,152 |  | 11,817 |  | 30 |  |  | 6,961 |  | 7,637 |  | 32 |
Other consumer | 29 |  | 31 |  | 2 |  |  | 113 |  | 190 |  | 2 |
Total | $ | 60,202 |  | $ | 74,387 |  | $ | 2,213 |  |  | $ | 45,650 |  | $ | 51,754 |  | $ | 37 |

As of March 31, 2016, we had $60.2 million of impaired loans which included $21.0 million of acquired loans in the Merger that experienced credit deterioration since the acquisition date.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 7. ALLOWANCE FOR LOAN LOSSES – continued
The following tables summarize investments in loans considered to be impaired and related information on those impaired loans for the periods presented:

| Three Months Ended
| March 31, 2016 | March 31, 2015
(dollars in thousands) | Average Recorded Investment | Interest Income Recognized | Average Recorded Investment | Interest Income Recognized
Without a related allowance recorded: |  |  |  |
Commercial real estate | $ | 18,605 |  | $ | 199 |  | $ | 22,627 |  | $ | 164 |
Commercial and industrial | 15,513 |  | 149 |  | 10,847 |  | 62 |
Commercial construction | 10,782 |  | 64 |  | 7,704 |  | 53 |
Consumer real estate | 11,102 |  | 135 |  | 7,073 |  | 96 |
Other consumer | 26 |  | — |  | 34 |  | — |
Total without a Related Allowance Recorded | 56,028 |  | 547 |  | 48,285 |  | 375 |
With a related allowance recorded: |  |  |  |
Commercial real estate | — |  | — |  | 823 |  | 8 |
Commercial and industrial | 5,382 |  | 32 |  | — |  | — |
Commercial construction | 1,117 |  | 6 |  | — |  | — |
Consumer real estate | 115 |  | 2 |  | 42 |  | 1 |
Other consumer | 2 |  | — |  | 19 |  | — |
Total with a Related Allowance Recorded | 6,616 |  | 40 |  | 884 |  | 9 |
Total: |  |  |  |
Commercial real estate | 18,605 |  | 199 |  | 23,450 |  | 172 |
Commercial and industrial | 20,895 |  | 181 |  | 10,847 |  | 62 |
Commercial construction | 11,899 |  | 70 |  | 7,704 |  | 53 |
Consumer real estate | 11,217 |  | 137 |  | 7,115 |  | 97 |
Other consumer | 28 |  | — |  | 53 |  | — |
Total | $ | 62,644 |  | $ | 587 |  | $ | 49,169 |  | $ | 384 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 7. ALLOWANCE FOR LOAN LOSSES – continued
The following tables detail activity in the ALL for the periods presented:

| Three Months Ended March 31, 2016
(dollars in thousands) | Commercial Real Estate |  |  | Commercial and Industrial |  |  | Commercial Construction |  |  | Consumer Real Estate |  |  | Other Consumer |  |  | Total Loans |
Balance at beginning of period | $ | 15,043 |  |  | $ | 10,853 |  |  | $ | 12,625 |  |  | $ | 8,400 |  |  | $ | 1,226 |  |  | $ | 48,147 |
Charge-offs | (54 | ) |  | (2,694 | ) |  | — |  |  | (232 | ) |  | (648 | ) |  | (3,628 | )
Recoveries | 361 |  |  | 203 |  |  | 2 |  |  | 164 |  |  | 84 |  |  | 814 |
Net (Charge-offs)/ Recoveries | 307 |  |  | (2,491 | ) |  | 2 |  |  | (68 | ) |  | (564 | ) |  | (2,814 | )
Provision for loan losses | (84 | ) |  | 6,378 |  |  | (1,802 | ) |  | (71 | ) |  | 593 |  |  | 5,014 |
Balance at End of Period | $ | 15,266 |  |  | $ | 14,740 |  |  | $ | 10,825 |  |  | $ | 8,261 |  |  | $ | 1,255 |  |  | $ | 50,347 |
| Three Months Ended March 31, 2015
(dollars in thousands) | Commercial Real Estate |  |  | Commercial and Industrial |  |  | Commercial Construction |  |  | Consumer Real Estate |  |  | Other Consumer |  |  | Total Loans |
Balance at beginning of period | $ | 20,164 |  |  | $ | 13,668 |  |  | $ | 6,093 |  |  | $ | 6,333 |  |  | $ | 1,653 |  |  | $ | 47,911 |
Charge-offs | (66 | ) |  | (707 | ) |  | — |  |  | (375 | ) |  | (303 | ) |  | (1,451 | )
Recoveries | 103 |  |  | 114 |  |  | 1 |  |  | 136 |  |  | 85 |  |  | 439 |
Net (Charge-offs)/ Recoveries | 37 |  |  | (593 | ) |  | 1 |  |  | (239 | ) |  | (218 | ) |  | (1,012 | )
Provision for loan losses | (1,130 | ) |  | 636 |  |  | 775 |  |  | 629 |  |  | 297 |  |  | 1,207 |
Balance at End of Period | $ | 19,071 |  |  | $ | 13,711 |  |  | $ | 6,869 |  |  | $ | 6,723 |  |  | $ | 1,732 |  |  | $ | 48,106 |

The following tables present the ALL and recorded investments in loans by category as of the periods presented:

| March 31, 2016
| Allowance for Loan Losses |  | Portfolio Loans
(dollars in thousands) | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total |  |  | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total(1) |
Commercial real estate | $ | — |  | $ | 15,266 |  | $ | 15,266 |  |  | $ | 18,505 |  | $ | 2,241,726 |  | $ | 2,260,231 |
Commercial and industrial | 2,027 |  | 12,713 |  | 14,740 |  |  | 18,628 |  | 1,315,491 |  | 1,334,119 |
Commercial construction | 154 |  | 10,671 |  | 10,825 |  |  | 11,888 |  | 367,405 |  | 379,293 |
Consumer real estate | 30 |  | 8,231 |  | 8,261 |  |  | 11,152 |  | 1,115,764 |  | 1,126,916 |
Other consumer | 2 |  | 1,253 |  | 1,255 |  |  | 29 |  | 76,160 |  | 76,189 |
Total | $ | 2,213 |  | $ | 48,134 |  | $ | 50,347 |  |  | $ | 60,202 |  | $ | 5,116,546 |  | $ | 5,176,748 |
(1)Includes acquired loans.
| December 31, 2015
| Allowance for Loan Losses |  | Portfolio Loans
(dollars in thousands) | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total |  |  | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total(1) |
Commercial real estate | $ | — |  | $ | 15,043 |  | $ | 15,043 |  |  | $ | 12,661 |  | $ | 2,153,942 |  | $ | 2,166,603 |
Commercial and industrial | — |  | 10,853 |  | 10,853 |  |  | 14,417 |  | 1,242,413 |  | 1,256,830 |
Commercial construction | 3 |  | 12,622 |  | 12,625 |  |  | 11,498 |  | 401,946 |  | 413,444 |
Consumer real estate | 32 |  | 8,368 |  | 8,400 |  |  | 6,961 |  | 1,109,835 |  | 1,116,796 |
Other consumer | 2 |  | 1,224 |  | 1,226 |  |  | 113 |  | 73,826 |  | 73,939 |
Total | $ | 37 |  | $ | 48,110 |  | $ | 48,147 |  |  | $ | 45,650 |  | $ | 4,981,962 |  | $ | 5,027,612 |
(1)Includes acquired loans.

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 8. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Interest Rate Swaps
In accordance with applicable accounting guidance for derivatives and hedging, all derivatives are recognized as either assets or liabilities on the balance sheet at fair value. Interest rate swaps are contracts in which a series of interest rate flows (fixed and variable) are exchanged over a prescribed period. The notional amounts on which the interest payments are based are not exchanged. These derivative positions relate to transactions in which we enter into an interest rate swap with a commercial customer while at the same time entering into an offsetting interest rate swap with another financial institution. In connection with each transaction, we agree to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on the same notional amount at a fixed rate. At the same time, we agree to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows our customer to effectively convert a variable rate loan to a fixed rate loan with us receiving a variable rate. These agreements could have floors or caps on the contracted interest rates.
Pursuant to our agreements with various financial institutions, we may receive collateral or may be required to post collateral based upon mark-to-market positions. Beyond unsecured threshold levels, collateral in the form of cash or securities may be made available to counterparties of interest rate swap transactions. Based upon our current positions and related future collateral requirements relating to them, we believe any effect on our cash flow or liquidity position to be immaterial.
Derivatives contain an element of credit risk, the possibility that we will incur a loss because a counterparty, which may be a financial institution or a customer, fails to meet its contractual obligations. All derivative contracts with financial institutions may be executed only with counterparties approved by our Asset and Liability Committee, or ALCO, and derivatives with customers may only be executed with customers within credit exposure limits approved by our Senior Loan Committee. Interest rate swaps are considered derivatives, but are not accounted for using hedge accounting. As such, changes in the estimated fair value of the derivatives are recorded in current earnings and included in other noninterest income in the Consolidated Statements of Net Income.
Interest Rate Lock Commitments and Forward Sale Contracts
In the normal course of business, we sell originated mortgage loans into the secondary mortgage loan market. We also offer interest rate lock commitments to potential borrowers. The commitments are generally for a period of 60 days and guarantee a specified interest rate for a loan if underwriting standards are met, but the commitment does not obligate the potential borrower to close on the loan. Accordingly, some commitments expire prior to becoming loans. We may encounter pricing risks if interest rates increase significantly before the loan can be closed and sold. We may utilize forward sale contracts in order to mitigate this pricing risk. Whenever a customer desires these products, a mortgage originator quotes a secondary market rate guaranteed for that day by the investor. The rate lock is executed between the mortgagee and us and in turn a forward sale contract may be executed between us and the investor. Both the rate lock commitment and the corresponding forward sale contract for each customer are considered derivatives, but are not accounted for using hedge accounting. As such, changes in the estimated fair value of the derivatives during the commitment period are recorded in current earnings and included in mortgage banking in the Consolidated Statements of Net Income.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 8. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES – continued
The following table indicates the amounts representing the value of derivative assets and derivative liabilities as of the dates presented:

| Derivatives (included in Other Assets) |  | Derivatives (included in Other Liabilities)
(dollars in thousands) | March 31, 2016 | December 31, 2015 |  | March 31, 2016 | December 31, 2015
Derivatives not Designated as Hedging Instruments: |  |  |  |  |
Interest Rate Swap Contracts- Commercial Loans |  |  |  |  |
Fair value | $ | 15,281 |  | $ | 11,295 |  |  | $ | 15,165 |  | $ | 11,276 |
Notional amount | 242,708 |  | 245,595 |  |  | 242,708 |  | 245,595 |
Collateral posted | — |  | — |  |  | 13,293 |  | 12,753 |
Interest Rate Lock Commitments- Mortgage Loans |  |  |  |  |
Fair value | 526 |  | 261 |  |  | — |  | — |
Notional amount | 16,641 |  | 9,894 |  |  | — |  | — |
Forward Sale Contracts- Mortgage Loans |  |  |  |  |
Fair value | — |  | — |  |  | 72 |  | 5 |
Notional amount | $ | — |  | $ | — |  |  | $ | 13,400 |  | $ | 9,800 |

Presenting offsetting derivatives that are subject to legally enforceable netting arrangements with the same party is permitted. For example, we may have a derivative asset as well as a derivative liability with the same counterparty to a swap transaction and are permitted to offset the asset position and the liability position resulting in a net presentation.
The following table indicates the gross amounts of commercial loan swap derivative assets and derivative liabilities, the amounts offset and the carrying values in the Consolidated Balance Sheets as of the dates presented:

| Derivatives (included in Other Assets) |  | Derivatives (included in Other Liabilities)
(dollars in thousands) | March 31, 2016 | December 31, 2015 |  | March 31, 2016 | December 31, 2015
Derivatives not Designated as Hedging Instruments: |  |  |  |  |
Gross amounts recognized | $ | 15,281 |  | $ | 11,295 |  |  | $ | 15,165 |  | $ | 11,276 |
Gross amounts offset | — |  | — |  |  | — |  | — |
Net amounts presented in the Consolidated Balance Sheets | 15,281 |  | 11,295 |  |  | 15,165 |  | 11,276 |
Gross amounts not offset(1) | — |  | — |  |  | (13,293 | ) | (12,573 | )
Net Amount | $ | 15,281 |  | $ | 11,295 |  |  | $ | 1,872 |  | $ | (1,297 | )

(1) Amounts represent posted collateral.
The following table indicates the gain or loss recognized in income on derivatives for the periods presented:

| Three Months Ended March 31,
(dollars in thousands) | 2016 | 2015
Derivatives not Designated as Hedging Instruments |  |
Interest rate swap contracts—commercial loans | $ | 97 |  | $ | 13 |
Interest rate lock commitments—mortgage loans | 265 |  | 136 |
Forward sale contracts—mortgage loans | (67 | ) | (17 | )
Total Derivatives Gain | $ | 295 |  | $ | 132 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 9. BORROWINGS
Short-term borrowings are for terms under one year and were comprised of REPOs and FHLB advances. All REPOs are overnight short-term investments and are not insured by the Federal Deposit Insurance Corporation. Securities pledged as collateral under these REPO financing arrangements cannot be sold or repledged by the secured party and are therefore accounted for as a secured borrowing. Mortgage backed securities with a total carrying value of $67.4 million at March 31, 2016 and $67.0 million at December 31, 2015 were pledged as collateral for these secured transactions. The pledged securities are held in safekeeping at the Federal Reserve. Due to the overnight short-term nature of REPOs, potential risk due to a decline in the value of the pledged collateral is low. Collateral pledging requirements with REPOs are monitored daily. FHLB advances are for various terms and are secured by a blanket lien on residential mortgages and other real estate secured loans.
Long-term borrowings are for original terms greater than or equal to one year and were comprised of FHLB advances, a capital lease and junior subordinated debt securities. Long-term FHLB advances are secured by the same loans as short-term FHLB advances. We had total long-term borrowings outstanding of $13.2 million at a fixed rate and $103.1 million at a variable rate at March 31, 2016, excluding our capital lease of $0.2 million. On March 4, 2015 we assumed $13.5 million of junior subordinated debt from the acquisition of Integrity. On March 5, 2015, we paid off $8.5 million and on June 18, 2015, we paid off the remaining $5.0 million.
Information pertaining to borrowings is summarized in the table below as of the dates presented:

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Balance | Weighted Average Rate |  | Balance | Weighted Average Rate
Short-term borrowings |  |  |  |  |
Securities sold under repurchase agreements | $ | 60,025 |  | 0.01 | % |  | $ | 62,086 |  | 0.01 | %
Short-term borrowings | 355,000 |  | 0.59 | % |  | 356,000 |  | 0.52 | %
Total short-term borrowings | 415,025 |  | 0.51 | % |  | 418,086 |  | 0.44 | %
Long-term borrowings |  |  |  |  |
Other long-term borrowings | 116,468 |  | 0.95 | % |  | 117,043 |  | 0.81 | %
Junior subordinated debt securities | 45,619 |  | 2.97 | % |  | 45,619 |  | 2.89 | %
Total long-term borrowings | 162,087 |  | 1.52 | % |  | 162,662 |  | 1.39 | %
Total Borrowings | $ | 577,112 |  | 0.79 | % |  | $ | 580,748 |  | 0.71 | %

We had total borrowings at March 31, 2016 and December 31, 2015 at the FHLB of Pittsburgh of $471.3 million and $472.9 million. The $471.3 million at March 31, 2016 consisted of $355.0 million in short-term borrowings and $116.3 million in long-term borrowings. Our maximum borrowing capacity with the FHLB of Pittsburgh was $2.0 billion at March 31, 2016. Our remaining borrowing availability is $1.4 billion. We utilized $628.1 million of our borrowing capacity at March 31, 2016 consisting of $471.3 million for borrowings and $156.8 million for letters of credit to collateralize public funds.
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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 10. COMMITMENTS AND CONTINGENCIES
Commitments
In the normal course of business, we offer off-balance sheet credit arrangements to enable our customers to meet their financing objectives. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements. Our exposure to credit loss, in the event the customer does not satisfy the terms of the agreement, equals the contractual amount of the obligation less the value of any collateral. We apply the same credit policies in making commitments and standby letters of credit that are used for the underwriting of loans to customers. Commitments generally have fixed expiration dates, annual renewals or other termination clauses and may require payment of a fee. Because many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Our allowance for unfunded commitments totaled $2.7 million at March 31, 2016 and $2.5 million at December 31, 2015. The allowance for unfunded commitments is included in other liabilities in the Consolidated Balance Sheets. The allowance for unfunded commitments is determined using a similar methodology as our ALL methodology. The reserve is calculated by applying historical loss rates and qualitative adjustments to our unfunded commitments.
Estimates of the fair value of these off-balance sheet items were not made because of the short-term nature of these arrangements and the credit standing of the counterparties.
The following table sets forth our commitments and letters of credit as of the dates presented:

(dollars in thousands) | March 31, 2016 |  |  | December 31, 2015 |
Commitments to extend credit | $ | 1,574,971 |  |  | $ | 1,619,854 |
Standby letters of credit | 90,401 |  |  | 97,676 |
Total | $ | 1,665,372 |  |  | $ | 1,717,530 |

Litigation
In the normal course of business, we are subject to various legal and administrative proceedings and claims. While any type of litigation contains a level of uncertainty, we believe that the outcome of such proceedings or claims pending will not have a material adverse effect on our consolidated financial position or results of operations.
NOTE 11. OTHER COMPREHENSIVE INCOME
The following table represents the change in components of other comprehensive income (loss) for the periods presented, net of tax effects.

| Three Months Ended March 31, 2016 |  | Three Months Ended March 31, 2015
(dollars in thousands) | Pre-Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax Amount |  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax Amount |
Change in net unrealized gains/(losses) on securities available-for-sale | $ | 9,033 |  | $ | (3,162 | ) | $ | 5,871 |  |  | $ | 4,983 |  | $ | (1,745 | ) | $ | 3,238 |
Adjustment to funded status of employee benefit plans | 3,800 |  | (1,330 | ) | 2,470 |  |  | 729 |  | (162 | ) | 567 |
Other Comprehensive Income/(Loss) | $ | 12,833 |  | $ | (4,492 | ) | $ | 8,341 |  |  | $ | 5,712 |  | $ | (1,907 | ) | $ | 3,805 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 12. EMPLOYEE BENEFITS
Effective March 31, 2016, the qualified and nonqualified defined benefit plans were amended to freeze benefit accruals for all persons entitled to benefits under the plan. We recorded a curtailment gain in the first quarter of 2016 resulting from the amendment. The curtailment gain totaled $1.0 million and represented the unrecognized benefits associated with prior plan amendments that would have been amortized into income over the next seven years. The qualified plan was previously closed to new participants effective December 31, 2007. We will continue recording pension expense related to this plan, primarily representing interest costs on the accumulated benefit obligation and amortization of actuarial losses accumulated in the plan, as well as income from expected investment returns on pension assets.
Prior to March 31, 2016, the accrued benefits were based on years of service and the employee’s compensation for the highest five consecutive years in the last ten years. Contributions were intended to provide for benefits attributed to employee service to date and for those benefits expected to be earned in the future. The expected long-term rate of return on plan assets is 7.50 percent. Effective January 1, 2015, the plan was amended to provide unmarried participants with the ability to name a beneficiary to receive a lump sum death benefit equal to 80 percent of the participant’s accrued benefit payable at normal retirement age, in the event the participant dies while employed by S&T.
The following table summarizes the components of net periodic pension cost for the periods presented:

| Three Months Ended March 31,
(dollars in thousands) | 2016 |  | 2015
Components of Net Periodic Pension Cost |  |  |
Service cost—benefits earned during the period | $ | 474 |  |  | $ | 672 |
Interest cost on projected benefit obligation | 1,065 |  |  | 1,100 |
Expected return on plan assets | (1,459 | ) |  | (1,807 | )
Amortization of prior service credit | (35 | ) |  | (35 | )
Recognized net actuarial loss | 544 |  |  | 468 |
Net Periodic Pension Expense | $ | 589 |  |  | $ | 398 |

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S&T BANCORP, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 13. SEGMENTS
We operate three reportable operating segments: Community Banking, Insurance and Wealth Management.

• | Our Community Banking segment offers services which include accepting time and demand deposits and originating commercial and consumer loans.

• | Our Insurance segment includes a full-service insurance agency offering commercial property and casualty insurance, group life and health coverage, employee benefit solutions and personal insurance lines.

• | Our Wealth Management segment offers discount brokerage services, services as executor and trustee under wills and deeds, guardian and custodian of employee benefits and other trust and brokerage services, as well as a registered investment advisor that manages private investment accounts for individuals and institutions.

The following table represents total assets by reportable operating segment as of the dates presented:

(dollars in thousands) | March 31, 2016 |  |  | December 31, 2015 |
Community Banking | $ | 6,467,331 |  |  | $ | 6,305,046 |
Insurance | 7,925 |  |  | 9,619 |
Wealth Management | 3,906 |  |  | 3,689 |
Total Assets | $ | 6,479,162 |  |  | $ | 6,318,354 |

The following tables provide financial information for our three operating segments for the three month periods ended March 31, 2016 and 2015. The financial results of the business segments include allocations for shared services based on an internal analysis that supports line of business and branch performance measurement. Shared services include expenses such as employee benefits, occupancy expense, computer support and other corporate overhead. Even with these allocations, the financial results are not necessarily indicative of the business segments’ financial condition and results of operations as if they existed as independent entities. The information provided under the caption “Eliminations” represents operations not considered to be reportable segments and/or general operating expenses and eliminations and adjustments, which are necessary for purposes of reconciling to the Consolidated Financial Statements.

| Three Months Ended March 31, 2016
(dollars in thousands) | Community Banking |  | Insurance |  | Wealth Management |  | Eliminations |  | Consolidated |
Interest income | $ | 55,016 |  | $ | 1 |  | $ | 128 |  | $ | (126 | ) | $ | 55,019 |
Interest expense | 5,438 |  | — |  | — |  | (56 | ) | 5,382 |
Net interest income | 49,578 |  | 1 |  | 128 |  | (70 | ) | 49,637 |
Provision for loan losses | 5,014 |  | — |  | — |  | — |  | 5,014 |
Noninterest income | 11,346 |  | 1,624 |  | 2,747 |  | 100 |  | 15,817 |
Noninterest expense | 33,169 |  | 1,254 |  | 2,305 |  | 30 |  | 36,758 |
Depreciation expense | 1,186 |  | 10 |  | 4 |  | — |  | 1,200 |
Amortization of intangible assets | 439 |  | 12 |  | 7 |  | — |  | 458 |
Provision for income taxes | 5,613 |  | 122 |  | 196 |  | — |  | 5,931 |
Net Income | $ | 15,503 |  | $ | 227 |  | $ | 363 |  | $ | — |  | $ | 16,093 |
| Three Months Ended March 31, 2015
(dollars in thousands) | Community Banking |  | Insurance |  | Wealth Management |  | Eliminations |  | Consolidated |
Interest income | $ | 43,887 |  | $ | — |  | $ | 140 |  | $ | (111 | ) | $ | 43,916 |
Interest expense | 3,889 |  | — |  | — |  | (232 | ) | 3,657 |
Net interest income | 39,998 |  | — |  | 140 |  | 121 |  | 40,259 |
Provision for loan losses | 1,207 |  | — |  | — |  | — |  | 1,207 |
Noninterest income | 7,537 |  | 1,553 |  | 2,916 |  | 78 |  | 12,084 |
Noninterest expense | 28,687 |  | 1,137 |  | 2,220 |  | 199 |  | 32,243 |
Depreciation expense | 1,011 |  | 12 |  | 7 |  | — |  | 1,030 |
Amortization of intangible assets | 326 |  | 13 |  | 9 |  | — |  | 348 |
Provision for income taxes | 4,256 |  | 137 |  | 287 |  | — |  | 4,680 |
Net Income | $ | 12,048 |  | $ | 254 |  | $ | 533 |  | $ | — |  | $ | 12,835 |

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued
NOTE 14. QUALIFIED AFFORDABLE HOUSING PROJECTS
We invest in affordable housing projects primarily to satisfy our Community Reinvestment Act requirements. As a limited partner in these operating partnerships, we receive tax credits and tax deductions for losses incurred by the underlying properties. We use the cost method to account for these partnerships. Our total investment in qualified affordable housing projects was $14.2 million at March 31, 2016 and $15.0 million at December 31, 2015. We had no open commitments to fund current or future investments in qualified affordable housing projects at March 31, 2016 or December 31, 2015. Amortization expense included, included in other noninterest expense in the Consolidated Statements of Net Income, was $0.8 million for the three months ended March 31, 2016 and $0.9 million for the three months ended March 31, 2015. The amortization expense was offset by tax credits of $0.9 million for the three months ended March 31, 2016 and $1.0 million for the three months ended March 31, 2015 as a reduction to our federal tax provision.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Management’s Discussion and Analysis of Financial Condition and Results of Operations, or MD&A, represents an overview of our consolidated results of operations and financial condition and highlights material changes in our financial condition and results of operations at and for the three month periods ended March 31, 2016 and 2015. Our MD&A should be read in conjunction with our Consolidated Financial Statements and notes thereto. The results of operations reported in the accompanying Consolidated Financial Statements are not necessarily indicative of results to be expected in future periods.
Important Note Regarding Forward-Looking Statements
This quarterly report on Form 10-Q contains or incorporates statements that we believe are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements generally relate to our financial condition, results of operations, plans, objectives, future performance or business. They usually can be identified by the use of forward-looking language such as “will likely result,” “may,” “are expected to,” “is anticipated,” “estimate,” “forecast,” “projected,” “intends to” or other similar words. You should not place undue reliance on these statements, as they are subject to risks and uncertainties, including but not limited to, those described in this Form 10-Q and our Annual Report on Form 10-K for the fiscal year ended December 31, 2015, which is on file with the Securities and Exchange Commission, or SEC. When considering these forward-looking statements, you should keep in mind these risks and uncertainties, as well as any cautionary statements we may make. Moreover, you should treat these statements as speaking only as of the date they are made and based only on information actually known to us at that time. We undertake no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise.
These forward-looking statements are based on current expectations, estimates and projections about our business and beliefs and assumptions made by management. These Future Factors are not guarantees of our future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in these forward-looking statements.
Future Factors include:

• | credit losses;

• | cyber-security concerns, including an interruption or breach in the security of our information systems;

• | rapid technological developments and changes;

• | sensitivity to the interest rate environment including a prolonged period of low interest rates, a rapid increase in interest rates or a change in the shape of the yield curve;

• | a change in spreads on interest-earning assets and interest-bearing liabilities;

• | regulatory supervision and oversight, including Basel III required capital levels, and public policy changes, including environmental regulations;

• | legislation affecting the financial services industry as a whole, and S&T, in particular, including the effects of the Dodd-Frank Act;

• | the outcome of pending and future litigation and governmental proceedings;

• | increasing price and product/service competition, including new entrants;

• | the ability to continue to introduce competitive new products and services on a timely, cost-effective basis;

• | managing our internal growth and acquisitions, particularly our recent acquisition of Integrity Bancshares, Inc., or Integrity;

• | the possibility that the anticipated benefits from the recent Integrity acquisition and any other future acquisitions cannot be fully realized in a timely manner or at all, or that integrating the operations of Integrity or future acquired operations will be more difficult, disruptive or costly than anticipated;

• | containing costs and expenses;

• | reliance on significant customer relationships;

• | general economic or business conditions, either nationally or regionally in our market areas, may be less favorable than expected, resulting in among other things, a reduced demand for credit and other services;

• | deterioration of the housing market and reduced demand for mortgages;

• | a deterioration in the overall macroeconomic conditions or the state of the banking industry that could warrant further analysis of the carrying value of goodwill and could result in an adjustment to its carrying value resulting in a non-cash charge to net income;

• | a re-emergence of turbulence in significant portions of the global financial and real estate markets that could impact our performance, both directly, by affecting our revenues and the value of our assets and liabilities, and indirectly, by affecting the economy generally; and

• | access to capital in the amounts, at the times and on the terms required to support our future businesses.

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S&T BANCORP, INC. AND SUBSIDIARIES
Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
These are representative of the Future Factors that could affect the outcome of the forward-looking statements. In addition, such statements could be affected by general industry and market conditions and growth rates, general economic conditions, including interest rate fluctuations, and other Future Factors.
Critical Accounting Policies and Estimates
Our critical accounting policies involving the significant judgments and assumptions used in the preparation of the Consolidated Financial Statements as of March 31, 2016 have remained unchanged from the disclosures presented in our Annual Report on Form 10-K for the year ended December 31, 2015 under the section “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”
Overview
We are a bank holding company headquartered in Indiana, Pennsylvania with assets of $6.5 billion at March 31, 2016. We operate bank branches in Pennsylvania and loan production offices, or LPOs, in Pittsburgh, Ohio and New York. We provide a full range of financial services with retail and commercial banking products, cash management services, insurance and trust and brokerage services. Our common stock trades on the NASDAQ Global Select Market under the symbol “STBA.”
We earn revenue primarily from interest on loans and securities and fees charged for financial services provided to our customers. Offsetting these revenues are the cost of deposits and other funding sources, provision for loan losses and other operating costs such as salaries and employee benefits, data processing, occupancy and tax expense.
Our mission is to become the financial services provider of choice within the markets that we serve. We strive to do this by delivering exceptional service and value, one customer at a time. Our strategic plan focuses on organic growth, which includes growth within our current footprint and growth through market expansion. We also actively evaluate acquisition opportunities as another source of growth. Our strategic plan includes a collaborative model that combines expertise from all of our business segments and focuses on satisfying each customer’s individual financial objectives.
Our focus continues to be on loan and deposit growth and implementing opportunities to increase fee income while closely monitoring our operating expenses and asset quality. With our recent expansion into new markets, we are focused on executing our strategy to successfully build our brand and grow our business in these markets. The low interest rate environment remains a challenge for our net interest income, but our organic growth will help to mitigate the impact.
Earnings Summary
Net income increased $3.3 million for the three months ended March 31, 2016 compared to the same period in 2015. Net income for the three months ended March 31, 2016 was $16.1 million resulting in diluted earnings per share of $0.46 compared to net income of $12.8 million and $0.41 diluted earnings per share for the same period in 2015. The timing of the Integrity merger, or Merger, on March 4, 2015 has impacted the comparability of financial results for the three months ended March 31, 2016 and the three months ended March 31, 2015 due to only 26 days of Integrity results being included in earnings in the prior year. The increase in net income was primarily driven by increases in the net interest margin of $9.4 million and noninterest income of $3.7 million. These increases were partially offset by increases in our provision for loan losses of $3.8 million, noninterest expenses of $4.8 million and income taxes of $1.2 million. Noninterest expense included $2.3 million of Merger related expenses during the three months ended March 31, 2015.
Net interest income increased $9.4 million, or 23 percent, to $49.6 million for the three months ended March 31, 2016 compared to $40.3 million for the same period in 2015. The increase was primarily due to the increase in average interest-earning assets of $1.0 billion, or 21 percent, partially offset by an increase in average interest-bearing liabilities of $854.8 million, or 25 percent, compared to 2015. The increase in average interest-earning assets is related to the Merger and our successful efforts in growing our loan portfolio organically. The increase in short term interest rates in December of 2015 positively impacted both net interest income and net interest margin, on a fully taxable-equivalent, or FTE, basis for the three months ended March 31, 2016. Additionally, net interest income was favorably impacted by accretion resulting from purchase accounting fair value adjustments related to the Merger of $0.8 million for the three months ended March 31, 2016. Net interest margin on a FTE basis, increased to 3.53 percent for the three months ended March 31, 2016 compared to 3.48 percent for the same period in 2015.
The provision for loan losses increased $3.8 million to $5.0 million for the three months ended March 31, 2016 compared to $1.2 million for the same period in 2015. The increase in our provision was primarily due to an increase in specific reserves of $2.1 million on newly impaired loans and an increase in net loan charge-offs of $1.8 million.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
Noninterest income increased $3.7 million to $15.8 million for the three months ended March 31, 2016 compared to $12.1 million for the same period in 2015. The increases in noninterest income were primarily due to a gain of $2.1 million on the sale of our credit card portfolio and a curtailment gain of $1.0 million resulting from the amendment to freeze benefit accruals for all participants in our defined benefit plans during the period ended March 31, 2016.
Noninterest expense increased $4.8 million to $38.4 million for the three months ended March 31, 2016 compared to $33.6 million for the same period in 2015. The increases in noninterest expense were primarily due to our expansion. Higher salaries and employee benefits were due to increases in our staffing from the Merger. Additional increases were due to higher operating expenses resulting from the Merger. The three months ended March 31, 2016 included three months of expenses due to growth from the Merger compared to only 26 days of increased expenses from the Merger for the three months ended March 31, 2015.
The provision for income taxes increased $1.2 million for the three months ended March 31, 2016 compared to the same period in 2015. The increase to the tax provision was due to an increase in our annual projected tax rate for 2016 as a result of higher projected pretax income.
Explanation of Use of Non-GAAP Financial Measures
In addition to the results of operations presented in accordance with generally accepted accounting principles, or GAAP, management uses, and this quarterly report contains or references, certain non-GAAP financial measures, such as net interest income on a fully taxable equivalent, or FTE, basis and operating revenue. Management believes these non-GAAP financial measures provide information useful to investors in understanding our underlying business, operational performance and performance trends as they facilitate comparisons with the performance of other companies in the financial services industry. Although management believes that these non-GAAP financial measures enhance investors’ understanding of our business and performance, these non-GAAP financial measures should not be considered an alternative to GAAP or considered to be more important than financial results determined in accordance with GAAP, nor are they necessarily comparable with non-GAAP measures which may be presented by other companies.
We believe the presentation of net interest income on a FTE basis ensures the comparability of net interest income arising from both taxable and tax-exempt sources and is consistent with industry practice. Interest income per the Consolidated Statements of Comprehensive Income is reconciled to net interest income adjusted to a FTE basis in the Net Interest Income section of the "Results of Operations - Three Months Ended March 31, 2016 Compared to Three Months Ended March 31, 2015."
Operating revenue is the sum of net interest income and noninterest income less non-recurring income and expenses. In order to understand the significance of net interest income to our business and operating results, we believe it is appropriate to evaluate the significance of net interest income as a component of operating revenue.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
RESULTS OF OPERATIONS
Three Months Ended March 31, 2016 Compared to
Three Months Ended March 31, 2015
Net Interest Income
Our principal source of revenue is net interest income. Net interest income represents the difference between the interest and fees earned on interest-earning assets and the interest paid on interest-bearing liabilities. Net interest income is affected by changes in the average balance of interest-earning assets and interest-bearing liabilities and changes in interest rates and spreads. Maintaining consistent spreads between interest-earning assets and interest-bearing liabilities is significant to our financial performance because net interest income comprised 80 percent of operating revenue (net interest income plus noninterest income, excluding security gains/losses and non-recurring income and expenses) for the three months ended March 31, 2016 and 77 percent of operating revenue for the three months ended March 31, 2015. The level and mix of interest-earning assets and interest-bearing liabilities is managed by our Asset and Liability Committee, or ALCO, in order to mitigate interest rate and liquidity risks of the balance sheet. A variety of ALCO strategies were implemented, within prescribed ALCO risk parameters, to produce an acceptable level of net interest income.
The interest income on interest-earning assets and the net interest margin are presented on a FTE basis. The FTE basis adjusts for the tax benefit of income on certain tax-exempt loans and securities using the federal statutory tax rate of 35 percent for each period and the dividend-received deduction for equity securities. We believe this to be the preferred industry measurement of net interest income that provides a relevant comparison between taxable and non-taxable amounts.
The following table reconciles interest income per the Consolidated Statements of Comprehensive Income to net interest income and rates adjusted to a FTE basis for the periods presented:

| Three months ended March 31,
(dollars in thousands) | 2016 |  | 2015
Total interest income | $ | 55,019 |  |  | $ | 43,916 |
Total interest expense | 5,382 |  |  | 3,657 |
Net interest income per consolidated statements of comprehensive income | 49,637 |  |  | 40,259 |
Adjustment to FTE basis | 1,722 |  |  | 1,392 |
Net Interest Income (FTE) (non-GAAP) | $ | 51,359 |  |  | $ | 41,651 |
Net interest margin | 3.41 | % |  | 3.37 | %
Adjustment to FTE basis | 0.12 | % |  | 0.11 | %
Net Interest Margin (FTE) (non-GAAP) | 3.53 | % |  | 3.48 | %

Income amounts are annualized for rate calculations.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
Average Balance Sheet and Net Interest Income Analysis
The following table provides information regarding the average balances, interest and rates earned on interest-earning assets and the average balances, interest and rates paid on interest-bearing liabilities for the periods presented:

| Three months ended March 31, 2016 |  | Three months ended March 31, 2015
(dollars in thousands) | Average Balance | Interest | Rate |  | Average Balance | Interest | Rate
ASSETS |  |  |  |  |  |  |
Loans (1) (2) | $ | 5,119,275 |  | $ | 52,336 |  | 4.11 | % |  | $ | 4,122,631 |  | $ | 40,734 |  | 4.01 | %
Interest-bearing deposits with banks | 48,159 |  | 65 |  | 0.54 | % |  | 65,575 |  | 35 |  | 0.22 | %
Taxable investment securities (3) | 531,467 |  | 2,625 |  | 1.98 | % |  | 504,867 |  | 2,482 |  | 1.97 | %
Tax-exempt investment securities (2) | 135,252 |  | 1,449 |  | 4.28 | % |  | 142,194 |  | 1,569 |  | 4.41 | %
Federal Home Loan Bank and other restricted stock | 22,592 |  | 266 |  | 4.72 | % |  | 15,427 |  | 488 |  | 12.66 | %
Total Interest-earning Assets | 5,856,745 |  | 56,741 |  | 3.89 | % |  | 4,850,694 |  | 45,308 |  | 3.78 | %
Noninterest-earning assets: |  |  |  |  |  |  |
Cash and due from banks | 54,504 |  |  |  |  | 50,096 |  |  |
Premises and equipment, net | 48,086 |  |  |  |  | 40,951 |  |  |
Other assets | 467,125 |  |  |  |  | 378,708 |  |  |
Less allowance for loan losses | (49,698 | ) |  |  |  | (48,623 | ) |  |
Total Assets | $ | 6,376,762 |  |  |  |  | $ | 5,271,826 |  |  |
LIABILITIES AND SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |
Interest-bearing demand | $ | 603,227 |  | $ | 201 |  | 0.13 | % |  | $ | 432,009 |  | $ | 87 |  | 0.08 | %
Money market | 410,260 |  | 229 |  | 0.22 | % |  | 362,939 |  | 161 |  | 0.18 | %
Savings | 1,061,117 |  | 483 |  | 0.18 | % |  | 1,052,347 |  | 403 |  | 0.16 | %
Certificates of deposit | 1,270,652 |  | 2,843 |  | 0.90 | % |  | 991,542 |  | 2,137 |  | 0.87 | %
Brokered deposits(4) | 395,647 |  | 498 |  | 0.51 | % |  | 260,555 |  | 219 |  | 0.34 | %
Total Interest-bearing Deposits | 3,740,903 |  | 4,254 |  | 0.46 | % |  | 3,099,392 |  | 3,007 |  | 0.39 | %
Securities sold under repurchase agreements | 64,303 |  | 2 |  | 0.01 | % |  | 40,039 |  | 1 |  | 0.01 | %
Short-term borrowings | 329,389 |  | 510 |  | 0.62 | % |  | 236,440 |  | 185 |  | 0.32 | %
Long-term borrowings | 116,705 |  | 276 |  | 0.95 | % |  | 19,086 |  | 142 |  | 3.01 | %
Junior subordinated debt securities | 45,619 |  | 340 |  | 2.99 | % |  | 47,175 |  | 322 |  | 2.77 | %
Total Interest-bearing Liabilities | 4,296,919 |  | 5,382 |  | 0.50 | % |  | 3,442,132 |  | 3,657 |  | 0.43 | %
Noninterest-bearing liabilities: |  |  |  |  |  |  |
Noninterest-bearing demand | 1,205,149 |  |  |  |  | 1,101,795 |  |  |
Other liabilities | 71,870 |  |  |  |  | 64,643 |  |  |
Shareholders’ equity | 802,824 |  |  |  |  | 663,256 |  |  |
Total Liabilities and Shareholders’ Equity | $ | 6,376,762 |  |  |  |  | $ | 5,271,826 |  |  |
Net Interest Income (2)(3) |  | $ | 51,359 |  |  |  |  | $ | 41,651 |  |
Net Interest Margin (2) (3) |  |  | 3.53 | % |  |  |  | 3.48 | %

(1) Nonaccruing loans are included in the daily average loan amounts outstanding.
(2) Tax-exempt income is on a FTE basis using the statutory federal corporate income tax rate of 35 percent for 2016 and 2015.
(3) Taxable investment income is adjusted for the dividend-received deduction for equity securities.
(4) Brokered deposits consist of certificates of deposit, money market, and interest-bearing demand funds.
Net interest income on a FTE basis increased $9.7 million, or 23.3 percent, for the three months ended March 31, 2016 compared to the same period in 2015. The net interest margin on a FTE basis increased five basis points for the three months ended March 31, 2016 compared to the same period in 2015. The increase was primarily due to higher average interest-earning assets of $1.0 billion, or 21 percent, partially offset by an increase in average interest-bearing liabilities of $854.8 million, or 25 percent, compared to 2015. The increase in average interest-earning assets related to the Merger and our successful efforts in growing our loan portfolio organically.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
Interest income on a FTE basis increased $11.4 million, or 25.2 percent, to $56.7 million for the three months ended March 31, 2016 compared to $45.3 million for the same period in 2015. The increase in interest income was primarily driven by an increase in average interest-earning assets of $1.0 billion for the three months ended March 31, 2016 compared to the same period in 2015. The average interest-earning asset increase was mainly attributable to higher average loan balances of $1.0 billion related to the Merger and organic growth. The rate earned on loans increased ten basis points due to both the increase in short-term interest rates in December of 2015 and accretion resulting from purchase accounting fair value adjustments of $0.5 million, or four basis points, for the three months ended March 31, 2016. Average interest-bearing deposits with banks, which is primarily cash at the Federal Reserve, decreased $17.4 million while average investment securities increased $19.7 million for the three months ended March 31, 2016. Federal Home Loan Bank, or FHLB, and other restricted stock increased $7.2 million with a significant decrease in the rate primarily due to a special dividend received of $0.3 million during the three months ended March 31, 2015. Overall, the FTE rate on interest-earning assets increased 11 basis points for the three months ended March 31, 2016 compared to the same period in 2015.
Interest expense increased $1.7 million for the three months ended March 31, 2016 compared to the same period in 2015. The increase in interest expense was mainly driven by an increase in average deposits of $641.5 million due to the Merger and organic deposit growth. Average brokered deposits increased $135.1 million, average short-term borrowings increased $93.0 million and average long-term borrowings increased $97.6 million for the three months ending March 31, 2016 compared to the same period in 2015 to fund loan growth. The increase in average long-term borrowings was due to a $100 million long-term variable rate borrowing in the second quarter of 2015. A $0.2 million certificate of deposit purchase accounting accretion related to the Merger had a positive impact on the interest-bearing liability rate of two basis points for the three months ended March 31, 2016. This was offset by the increase in short-term interest rates in December of 2015 and deposit promotions which resulted in the higher cost of deposits. Overall, the cost of interest-bearing liabilities increased by seven basis points for the three months ended March 31, 2016 as compared to the same period in 2015.
The following table sets forth for the periods presented a summary of the changes in interest earned and interest paid resulting from changes in volume and changes in rates:

| Three Months Ended March 31, 2016 compared to March 31, 2015
(dollars in thousands) | Volume (4) | Rate (4) | Net
Interest earned on: |  |  |
Loans (1) (2) | $ | 9,847 |  | $ | 1,755 |  | $ | 11,602 |
Interest-bearing deposits with banks | (9 | ) | 39 |  | 30 |
Taxable investment securities (3) | 131 |  | 12 |  | 143 |
Tax-exempt investment securities (2) | (77 | ) | (43 | ) | (120 | )
Federal Home Loan Bank and other restricted stock | 227 |  | (449 | ) | (222 | )
Change in Interest Earned on Interest-earning Assets | 10,119 |  | 1,314 |  | 11,433 |
Interest paid on: |  |  |
Interest-bearing demand | 35 |  | 79 |  | 114 |
Money market | 21 |  | 47 |  | 68 |
Savings | 3 |  | 77 |  | 80 |
Certificates of deposit | 602 |  | 104 |  | 706 |
Brokered deposits | 114 |  | 165 |  | 279 |
Securities sold under repurchase agreements | 1 |  | — |  | 1 |
Short-term borrowings | 73 |  | 252 |  | 325 |
Long-term borrowings | 726 |  | (592 | ) | 134 |
Junior subordinated debt securities | (11 | ) | 29 |  | 18 |
Change in Interest Paid on Interest-bearing Liabilities | 1,564 |  | 161 |  | 1,725 |
Net Change in Net Interest Income | $ | 8,555 |  | $ | 1,153 |  | $ | 9,708 |

(1) Nonaccruing loans are included in the daily average loan amounts outstanding.
(2) Tax-exempt income is on a FTE basis using the statutory federal corporate income tax rate of 35 percent for 2016 and 2015.
(3) Taxable investment income is adjusted for the dividend-received deduction for equity securities.
(4) Changes to rate/volume are allocated to both rate and volume on a proportionate dollar basis.
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Provision for Loan Losses
The provision for loan losses is the adjustment to the allowance for loan losses, or ALL, after considering loan charge-offs and recoveries to bring the ALL to a level determined to be appropriate in management's judgment to absorb probable losses inherent in the loan portfolio. The provision for loan losses increased $3.8 million to $5.0 million for the three months ended March 31, 2016 compared to $1.2 million for the same period in 2015. The increase in the provision for loan losses is attributed to both higher net charge-offs and specific reserves on impaired loans. Net charge-offs increased $1.8 million to $2.8 million for the three months ended March 31, 2016 compared to $1.0 million for the same period in 2015. Specific reserves for impaired loans were $2.2 million for the three months ended March 31, 2016 compared to $0.1 million for the same period in 2015. Annualized net loan charge-offs to average loans were 0.22 percent for the three months ended March 31, 2016 compared to 0.11 percent for the same period in 2015.
Nonperforming loans increased $33.7 million to $51.8 million at March 31, 2016 compared to $18.1 million at March 31, 2015. The increase in nonperforming loans was primarily due to $29.2 million of loans from the Merger which experienced credit deterioration subsequent to the acquisition date. Total special mention and substandard commercial loans have increased $8.6 million over the last twelve months to $199.6 million at March 31, 2016. The ALL at March 31, 2016 was $50.3 million or 0.97 percent of total portfolio loans compared to 1.03 percent of total portfolio loans at March 31, 2015. The ALL was 1.11 percent of originated loans at March 31, 2016 compared to 1.27 percent at March 31, 2015. Refer to “Allowance for Loan Losses” in the MD&A of this report for additional information.
Noninterest Income

| Three Months Ended March 31,
(dollars in thousands) | 2016 |  | 2015 |  | $ Change |  | % Change |
Securities gains (losses), net | $ | — |  | $ | — |  | $ | — |  | — | %
Service charges on deposit accounts | 2,999 |  | 2,583 |  | 416 |  | 16.1 |
Debit and credit card fees | 2,786 |  | 2,715 |  | 71 |  | 2.6 |
Wealth management fees | 2,752 |  | 2,923 |  | (171 | ) | (5.9 | )
Gain on sale of credit card portfolio | 2,066 |  | — |  | 2,066 |  | NM |
Insurance fees | 1,774 |  | 1,651 |  | 123 |  | 7.5 |
Mortgage banking | 529 |  | 525 |  | 4 |  | 0.8 |
Other | 2,911 |  | 1,687 |  | 1,224 |  | 72.6 |
Total Noninterest Income | $ | 15,817 |  | $ | 12,084 |  | $ | 3,733 |  | 30.9 | %
NM- Not meaningful |  |  |  |

Noninterest income increased $3.7 million, or 30.9 percent, to $15.8 million for the three months ended March 31, 2016 compared to the same period in 2015. The increase in noninterest income primarily related to a $2.1 million gain on the sale of our credit card portfolio that occurred in the first quarter of 2016. Subsequent to the sale of the portfolio, we will continue to earn income based on the terms of the marketing agreement which provides incentives for new credit card accounts and a percentage of both interchange income and finance charges. The increase in other noninterest income of $1.2 million for the three month period ended March 31, 2016 primarily related to a $1.0 million curtailment gain resulting from the amendment to freeze benefit accruals for all participants in our defined benefit plans. Service charges on deposit accounts increased $0.4 million for the three month period ended March 31, 2016 due to increased volume related to the Merger.
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Noninterest Expense

| Three Months Ended March 31,
(dollars in thousands) | 2016 | 2015 | $ Change | % Change
Salaries and employee benefits (1) | $ | 20,902 |  | $ | 16,780 |  | $ | 4,122 |  | 24.6 | %
Net occupancy (1) | 2,950 |  | 2,588 |  | 362 |  | 14.0 |
Data processing (1) | 2,111 |  | 2,320 |  | (209 | ) | (9.0 | )
Furniture and equipment | 1,929 |  | 1,226 |  | 703 |  | 57.3 |
Other taxes | 1,100 |  | 842 |  | 258 |  | 30.6 |
Professional services and legal (1) | 947 |  | 523 |  | 424 |  | 81.1 |
FDIC insurance | 940 |  | 695 |  | 245 |  | 35.3 |
Marketing | 901 |  | 816 |  | 85 |  | 10.4 |
Merger related expense | — |  | 2,301 |  | (2,301 | ) | (100.0 | )
Other(1) | 6,636 |  | 5,530 |  | 1,106 |  | 20.0 |
Total Noninterest Expense | $ | 38,416 |  | $ | 33,621 |  | $ | 4,795 |  | 14.3 | %

(1) Excludes Merger related expenses for 2015 amounts only.
Noninterest expense increased $4.8 million, or 14.3 percent, to $38.4 million for the three months ended March 31, 2016 compared to the same period in 2015. The increase was due in part to higher operating expenses related to the Merger which closed on March 4, 2015.
Salaries and employee benefits expense increased $4.1 million for the three months ended March 31, 2016 compared to the same period in 2015, primarily due to additional employees, higher medical costs, annual merit increases and higher pension and incentive expense. Approximately $0.9 million of the increase related to the addition of new employees from the Merger. Medical costs increased $0.8 million due to additional employees and higher medical claims. Annual merit increases resulted in $0.4 million of additional salary expense. Pension expense increased $0.2 million due to a decline in asset performance during 2016. Incentive expense increased $0.7 million primarily due to a new incentive plan in 2016 and higher production levels.
Other noninterest expense increased $1.1 million for the three months ended March 31, 2016 compared to the same period in 2015. The increases related to higher charitable contributions and loan collection and other real estate owned, or OREO, expenses primarily due to the Merger.
Net occupancy expense increased $0.4 million and furniture and equipment expense increased $0.7 million for the three months ended March 31, 2016 compared to the same period in 2015 primarily due to the additional locations acquired as part of the Merger and technology upgrades. Professional services and legal expense increased $0.4 million due to additional consulting and legal charges that were incurred for the three months ended March 31, 2016. Other taxes increased $0.3 million and Federal Deposit Insurance Corporation insurance expense, or FDIC, increased $0.2 million for the three months ended March 31, 2016 compared to the same period in 2015 primarily due to growth from the Merger.
Provision for Income Taxes
The provision for income taxes increased $1.2 million to $5.9 million for the three months ended March 31, 2016 compared to a provision of $4.7 million for the same period in 2015. The increase to the provision for income taxes was primarily due to higher pretax income which resulted in an increase in our 2016 annual projected tax rate. The effective tax rate for the three months ended March 31, 2016 increased to 26.9 percent compared to 26.7 percent for the same period in 2015.
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Financial Condition
March 31, 2016
Total assets increased $160.8 million, or 2.5 percent, to $6.5 billion at March 31, 2016 compared to $6.3 billion at December 31, 2015. Loan growth was strong resulting in an increase in total portfolio loans of $149.1 million, or 3.0 percent. Our commercial loan portfolio grew by $136.8 million, or 3.6 percent, to $4.0 billion with growth primarily in Commercial Real Estate, or CRE, and Commercial and Industrial, or C&I. Our consumer loan portfolio increased $12.4 million, or 1.0 percent, with growth primarily in residential mortgages. Securities increased $16.3 million, or 2.5 percent, compared to December 31, 2015 primarily due to normal purchase activity and increases in market value.
Our deposits increased $141.3 million, or 2.9 percent, with total deposits of $5.0 billion at March 31, 2016 compared to $4.9 billion at December 31, 2015. The majority of the increase related to certificates of deposits, or CDs, which increased $128.2 million as compared to December 31, 2015. Money market accounts had strong growth with an increase of $38.6 million and interest-bearing demand increased $3.4 million while both noninterest-bearing demand and savings accounts decreased compared to December 31, 2015. The increases in CDs and money market accounts is related to rate promotions during the first quarter of 2016.
Total borrowings at March 31, 2016 remained relatively unchanged at $577.1 compared to $580.7 million at December 31, 2015. Strong deposit growth during the first quarter of 2016 allowed us to fund loan growth with less reliance on borrowings.
Total shareholders’ equity increased by $18.6 million, or 2.3 percent, at March 31, 2016 compared to December 31, 2015. The increase was primarily due to net income of $16.1 million offset by dividends of $6.6 million and a $8.4 million increase in accumulated other comprehensive income. The $8.4 million increase in accumulated other comprehensive income was due to a $5.9 million increase in unrealized gains on our available-for-sale investment securities and a $2.5 million change in the funded status of our employee benefit plans.
Securities Activity

(dollars in thousands) | March 31, 2016 |  | December 31, 2015 |  | $ Change
U.S. Treasury securities | $ | 15,067 |  |  | $ | 14,941 |  |  | $ | 126 |
Obligations of U.S. government corporations and agencies | 271,540 |  |  | 263,303 |  |  | 8,237 |
Collateralized mortgage obligations of U.S. government corporations and agencies | 137,330 |  |  | 128,835 |  |  | 8,495 |
Residential mortgage-backed securities of U.S. government corporations and agencies | 39,285 |  |  | 40,125 |  |  | (840 | )
Commercial mortgage-backed securities of U.S. government corporations and agencies | 70,664 |  |  | 69,204 |  |  | 1,460 |
Obligations of states and political subdivisions | 134,382 |  |  | 134,886 |  |  | (504 | )
Debt Securities Available-for-Sale | 668,268 |  |  | 651,294 |  |  | 16,974 |
Marketable equity securities | 8,953 |  |  | 9,669 |  |  | (716 | )
Total Securities Available-for-Sale | $ | 677,221 |  |  | $ | 660,963 |  |  | $ | 16,258 |

We invest in various securities in order to maintain a source of liquidity, to satisfy various pledging requirements, increase net interest income and as a tool of the ALCO to reposition the balance sheet for interest rate risk purposes. Securities are subject to market risks that could negatively affect the level of liquidity available to us. Security purchases are subject to an investment policy approved annually by our Board of Directors and administered through ALCO and our treasury function. The securities portfolio increased $16.3 million, or 2.5 percent, at March 31, 2016 compared to December 31, 2015 primarily due to normal purchase activity and increases in market value.
Management evaluates the securities portfolio for an other than temporary impairment, or OTTI, on a quarterly basis. At March 31, 2016 our bond portfolio was in a net unrealized gain position of $17.8 million compared to a net unrealized gain of $8.1 million at December 31, 2015. At March 31, 2016, total gross unrealized gains were $17.8 million offset by an insignificant gross unrealized loss. At December 31, 2015, total gross unrealized gains were $9.8 million offset by gross unrealized losses of $1.7 million. The increase in the value of our securities portfolio was a result of the changing interest rate environment in 2016. Unrealized losses were not related to the underlying credit quality of the bond portfolio. All debt securities are determined to be investment grade and are paying principal and interest according to the contractual terms of the securities. Total unrealized gains on marketable equity securities at March 31, 2016 were $1.4 million compared to $2.1 million at December 31, 2015. There were no unrealized losses on marketable equity securities at March 31, 2016 or December 31, 2015. During the three months ended March 31, 2016 and 2015 we did not record any OTTI. The performance of the debt and equity securities markets could generate impairments in future periods requiring realized losses to be reported.
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Loan Composition

| March 31, 2016 |  | December 31, 2015
(dollars in thousands) | Amount | % of Loans |  | Amount | % of Loans
Commercial |  |  |  |  |
Commercial real estate | $ | 2,260,231 |  | 43.7 | % |  | $ | 2,166,603 |  | 43.1 | %
Commercial and industrial | 1,334,119 |  | 25.8 | % |  | 1,256,830 |  | 25.0 | %
Construction | 379,293 |  | 7.3 | % |  | 413,444 |  | 8.2 | %
Total Commercial Loans | 3,973,643 |  | 76.8 | % |  | 3,836,877 |  | 76.3 | %
Consumer |  |  |  |  |
Residential mortgage | 650,544 |  | 12.5 | % |  | 639,372 |  | 12.7 | %
Home equity | 467,671 |  | 9.0 | % |  | 470,845 |  | 9.4 | %
Installment and other consumer | 76,189 |  | 1.5 | % |  | 73,939 |  | 1.5 | %
Construction | 8,701 |  | 0.2 | % |  | 6,579 |  | 0.1 | %
Total Consumer Loans | 1,203,105 |  | 23.2 | % |  | 1,190,735 |  | 23.7 | %
Total Portfolio Loans | 5,176,748 |  | 100.0 | % |  | 5,027,612 |  | 100.0 | %
Loans Held for Sale | 11,739 |  |  |  | 35,321 |  |
Total Loans | $ | 5,188,487 |  |  |  | $ | 5,062,933 |  |

Our loan portfolio represents our most significant source of interest income. The risk that borrowers will be unable to pay such obligations is inherent in the loan portfolio. Other conditions such as downturns in the borrower's industry or the overall economic climate can significantly impact the borrower’s ability to pay.
Total portfolio loans as of March 31, 2016 increased $149.1 million, or 3.0 percent, to $5.2 billion compared to $5.0 billion at December 31, 2015 primarily due to growth in our commercial loan portfolio. CRE loans increased $93.6 million, or 4.3 percent, and C&I loans increased $77.3 million, or 6.1 percent. Commercial organic loan growth continues to be very strong, with much of it coming from our newer markets in New York, Ohio and South Central Pennsylvania. Approximately $70.2 million of the organic loan growth came from our loan production offices in Ohio and New York and $36.5 million from our South Central Pennsylvania market. Total consumer loans increased $12.4 million, or 1.0 percent, with growth primarily in residential mortgages. Loans held for sale decreased $23.6 million primarily due to the sale of our credit card portfolio during the first quarter of 2016.
Allowance for Loan Losses
We maintain an ALL at a level determined to be adequate to absorb estimated probable credit losses inherent within the loan portfolio as of the balance sheet date and is presented as a reserve against loans in the Consolidated Balance Sheets. Determination of an adequate ALL is inherently subjective and may be subject to significant changes from period to period. The methodology for determining the ALL has two main components: evaluation and impairment tests of individual loans and impairment tests of certain groups of homogeneous loans with similar risk characteristics.
An inherent risk to the loan portfolio as a whole is the condition of the economy in our markets. In addition, each loan segment carries with it risks specific to the segment. We develop and document a systematic ALL methodology based on the following portfolio segments: 1) CRE, 2) C&I, 3) Commercial Construction, 4) Consumer Real Estate and 5) Other Consumer. The following is a discussion of the key risks by portfolio segment that management assesses in preparing the ALL.
CRE loans are secured by commercial purpose real estate, including both owner occupied properties and investment properties for various purposes such as hotels, strip malls and apartments. Operations of the individual projects as well as global cash flows of the debtors are the primary sources of repayment for these loans. The condition of the local economy is an important indicator of risk, but there are also more specific risks depending on the collateral type as well as the business prospects of the lessee, if the project is not owner occupied.
C&I loans are made to operating companies or manufacturers for the purpose of production, operating capacity, accounts receivable, inventory or equipment financing. Cash flow from the operations of the company is the primary source of repayment for these loans. The condition of the local economy is an important indicator of risk, but there are also more specific risks depending on the industry of the company. Collateral for these types of loans often does not have sufficient value in a distressed or liquidation scenario to satisfy the outstanding debt.
Commercial Construction loans are made to finance construction of buildings or other structures, as well as to finance the acquisition and development of raw land for various purposes. While the risk of these loans is generally confined to the
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construction period, if there are problems, the project may not be completed, and as such, may not provide sufficient cash flow on its own to service the debt or have sufficient value in a liquidation to cover the outstanding principal. The condition of the local economy is an important indicator of risk, but there are also more risks depending on the type of project and the experience and resources of the developer.
Consumer Real Estate loans are secured by first and second liens such as home equity loans, home equity lines of credit and 1-4 family residential mortgages, including purchase money mortgages. The primary source of repayment for these loans is the income and assets of the borrower. The condition of the local economy, in particular the unemployment rate, is an important indicator of risk for this segment. The state of the local housing markets can also have a significant impact on this segment because low demand and/or declining home values can limit the ability of borrowers to sell a property and satisfy the debt.
Other Consumer loans are made to individuals and may be secured by assets other than 1-4 family residences, as well as unsecured loans. This segment includes auto loans, unsecured loans and lines and credit cards. The primary source of repayment for these loans is the income and assets of the borrower. The condition of the local economy, in particular the unemployment rate, is an important indicator of risk for this segment. The value of the collateral, if there is any, is less likely to be a source of repayment due to less certain collateral values.
The following tables summarize the ALL and recorded investments in loans by category for the dates presented:

| March 31, 2016
| Allowance for Loan Losses |  | Portfolio Loans
(dollars in thousands) | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total |  |  | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total |
Commercial real estate | $ | — |  | $ | 15,266 |  | $ | 15,266 |  |  | $ | 18,505 |  | $ | 2,241,726 |  | $ | 2,260,231 |
Commercial and industrial | 2,027 |  | 12,713 |  | 14,740 |  |  | 18,628 |  | 1,315,491 |  | 1,334,119 |
Commercial construction | 154 |  | 10,671 |  | 10,825 |  |  | 11,888 |  | 367,405 |  | 379,293 |
Consumer real estate | 30 |  | 8,231 |  | 8,261 |  |  | 11,152 |  | 1,115,764 |  | 1,126,916 |
Other consumer | 2 |  | 1,253 |  | 1,255 |  |  | 29 |  | 76,160 |  | 76,189 |
Total | $ | 2,213 |  | $ | 48,134 |  | $ | 50,347 |  |  | $ | 60,202 |  | $ | 5,116,546 |  | $ | 5,176,748 |

| December 31, 2015
| Allowance for Loan Losses |  | Portfolio Loans
(dollars in thousands) | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total |  |  | Individually Evaluated for Impairment |  | Collectively Evaluated for Impairment |  | Total |
Commercial real estate | $ | — |  | $ | 15,043 |  | $ | 15,043 |  |  | $ | 12,661 |  | $ | 2,153,942 |  | $ | 2,166,603 |
Commercial and industrial | — |  | 10,853 |  | 10,853 |  |  | 14,417 |  | 1,242,413 |  | 1,256,830 |
Commercial construction | 3 |  | 12,622 |  | 12,625 |  |  | 11,498 |  | 401,946 |  | 413,444 |
Consumer real estate | 32 |  | 8,368 |  | 8,400 |  |  | 6,961 |  | 1,109,835 |  | 1,116,796 |
Other consumer | 2 |  | 1,224 |  | 1,226 |  |  | 113 |  | 73,826 |  | 73,939 |
Total | $ | 37 |  | $ | 48,110 |  | $ | 48,147 |  |  | $ | 45,650 |  | $ | 4,981,962 |  | $ | 5,027,612 |

| March 31, 2016 |  |  | December 31, 2015 |
Ratio of net charge-offs to average loans outstanding | 0.22 | % | * | 0.22 | %
Allowance for loan losses as a percentage of total loans | 0.97 | % |  | 0.96 | %
Allowance for loan losses as a percentage of originated loans | 1.11 | % |  | 1.10 | %
Allowance for loan losses to nonperforming loans | 97 | % |  | 136 | %

* Annualized
The ALL was $50.3 million, or 0.97 percent of total portfolio loans and 1.11 percent of originated loans at March 31, 2016 compared to $48.1 million, or 0.96 percent of total portfolio loans and 1.10 percent of originated loans at December 31, 2015. The increase in the ALL of $2.2 million is mainly due to an increase in specific reserves for loans individually evaluated for impairment. The increase in specific reserves primarily related to a $3.7 million C&I loan that was impaired during the three months ended March 31, 2016 requiring a $1.7 million specific reserve. Impaired loans increased $14.5 million, or 31.7
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percent, from December 31, 2015. As of March 31, 2016, we had $60.2 million of impaired loans which included $19.9 million of new impaired loans for the quarter. The $19.9 million of new impaired loans included $11.8 million of loans acquired from the Merger, primarily from two relationships that experienced credit deterioration since the acquisition date, and $8.1 million of originated loans. The reserve for loans collectively evaluated for impairment did not change significantly at March 31, 2016 compared to December 31, 2015.
Net loan charge-offs were $2.8 million which primarily related to a $4.3 million C&I impaired loan requiring a $2.0 million charge-off during the three months ended March 31, 2016. Commercial special mention and substandard loans for the first quarter increased by $16.1 million to $199.6 million compared to $183.5 million at December 31, 2015.
We individually evaluate all substandard and nonaccrual commercial loans greater than $0.5 million for impairment. A loan is impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement. Our methodology for evaluating whether a loan is impaired includes risk-rating credits on an individual basis and consideration of the borrower’s overall financial condition, payment history and available cash resources. In measuring impairment, we primarily utilize fair market value of the collateral; however, we also use discounted cash flow when warranted.
Troubled debt restructurings, or TDRs, whether on accrual or nonaccrual status, are also classified as impaired loans. TDRs are loans where we, for economic or legal reasons related to a borrower’s financial difficulties, grant a concession to the borrower that we would not otherwise grant. We strive to identify borrowers in financial difficulty early and work with them to modify the terms before their loan reaches nonaccrual status. These modified terms generally include extensions of maturity dates at a stated interest rate lower than the current market rate for a new loan with similar risk characteristics, reductions in contractual interest rates or principal deferment. While unusual, there may be instances of principal forgiveness. These modifications are generally for longer term periods that would not be considered insignificant. Additionally, we classify loans where the debt obligation has been discharged through a Chapter 7 Bankruptcy and not reaffirmed as TDRs.
An accruing loan that is modified into a TDR can remain in accrual status if, based on a current credit analysis, collection of principal and interest in accordance with the modified terms is reasonably assured, and the borrower has demonstrated sustained historical repayment performance for a reasonable period before the modification. All TDRs are considered to be impaired loans and will be reported as impaired loans for the remaining life of the loan, unless the restructuring agreement specifies an interest rate equal to or greater than the rate that would be accepted at the time of the restructuring for a new loan with comparable risk and it is expected that the remaining principal and interest will be fully collected according to the restructured agreement. For all TDRs, regardless of size, as well as all other impaired loans, we conduct further analysis to determine the probable loss and assign a specific reserve to the loan if deemed appropriate. Further, all impaired loans are reported as nonaccrual loans unless the loan is a TDR that has met the requirements to be returned to accruing status. TDRs can be returned to accruing status if the ultimate collectability of all contractual amounts due, according to the restructured agreement, is not in doubt and there is a period of a minimum of six months of satisfactory payment performance by the borrower either immediately before or after the restructuring.
As an example, consider a substandard commercial construction loan that is currently 90 days past due where the loan is restructured to extend the maturity date for a period longer than would be considered an insignificant period of time. The post-modification interest rate given to the borrower is considered to be lower than the current market rate for new debt with similar risk and all other terms remain the same according to the original loan agreement. This loan will be considered a TDR as the borrower is experiencing financial difficulty and a concession has been granted due to the long extension, resulting in payment delay as well as the rate being lower than current market rate for new debt with similar risk. The loan will be reported as a nonaccrual TDR and an impaired loan. In addition, the loan could be charged down to the fair value of the collateral if a confirmed loss exists. If the loan subsequently performs, by means of making on-time principal and interest payments according to the newly restructured terms for a period of six months, and it is expected that all remaining principal and interest will be collected according to the terms of the restructured agreement, the loan will be returned to accrual status and reported as an accruing TDR. The loan will remain an impaired loan for the remaining life of the loan because the interest rate was not adjusted to be equal to or greater than the rate that would be accepted at the time of the restructuring for a new loan with comparable risk.
TDRs increased $0.5 million to $32.1 million at March 31, 2016 compared to $31.6 million at December 31, 2015. The increase is primarily due to new TDRs of $2.6 million which was partially offset by principal reductions and loan charge-offs. Total TDRs of $32.1 million at March 31, 2016 included $22.8 million, or 71.0 percent, that were accruing and $9.3 million, or 29.0 percent, that were nonaccrual.
Our charge-off policy for commercial loans requires that loans and other obligations that are not collectible be promptly charged-off when the loss becomes probable, regardless of the delinquency status of the loan. We may elect to recognize a partial charge-off when management has determined that the value of collateral is less than the remaining investment in the loan. A loan or obligation does not need to be charged-off, regardless of delinquency status, if (i) management has determined
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there exists sufficient collateral to protect the remaining loan balance and (ii) there exists a strategy to liquidate the collateral. Management may also consider a number of other factors to determine when a charge-off is appropriate. These factors may include, but are not limited to:
•The status of a bankruptcy proceeding
•The value of collateral and probability of successful liquidation; and/or
•The status of adverse proceedings or litigation that may result in collection
Consumer unsecured loans and secured loans are evaluated for charge-off after the loan becomes 90 days past due. Unsecured loans are fully charged-off and secured loans are charged-off to the estimated fair value of the collateral less the cost to sell.
Our allowance for lending-related commitments is determined using a methodology similar to that used for the ALL. Amounts are added to the allowance for lending-related commitments by a charge to current earnings through noninterest expense. The reserve is calculated by applying historical loss rates and considering qualitative factors to unfunded commitments. The balance in the allowance for unfunded loan commitments was $2.7 million at March 31, 2016 compared to $2.5 million at December 31, 2015. The increase primarily related to an increase in the volume of unfunded commitments. The allowance for unfunded commitments is included in other liabilities in the Consolidated Balance Sheets.
Nonperforming assets consist of nonaccrual loans, nonaccrual TDRs and OREO. The following table summarizes nonperforming assets for the dates presented:

(dollars in thousands) | March 31, 2016 |  | December 31, 2015 |  | $ Change |
Nonaccrual Loans |  |  |
Commercial real estate | $ | 11,497 |  | $ | 5,171 |  | $ | 6,326 |
Commercial and industrial | 12,514 |  | 7,709 |  | 4,805 |
Commercial construction | 8,251 |  | 7,488 |  | 763 |
Residential mortgage | 7,819 |  | 4,964 |  | 2,855 |
Home equity | 2,356 |  | 2,379 |  | (23 | )
Installment and other consumer | 106 |  | 12 |  | 94 |
Consumer construction | — |  | — |  | — |
Total Nonaccrual Loans | 42,543 |  | 27,723 |  | 14,820 |
Nonaccrual Troubled Debt Restructurings |  |  |
Commercial real estate | 3,747 |  | 3,548 |  | 199 |
Commercial and industrial | 1,695 |  | 1,570 |  | 125 |
Commercial construction | 1,742 |  | 1,265 |  | 477 |
Residential mortgage | 1,193 |  | 665 |  | 528 |
Home equity | 911 |  | 523 |  | 388 |
Installment and other consumer | 3 |  | 88 |  | (85 | )
Total Nonaccrual Troubled Debt Restructurings | 9,291 |  | 7,659 |  | 1,632 |
Total Nonaccrual Loans | 51,834 |  | 35,382 |  | 16,452 |
OREO | 297 |  | 354 |  | (57 | )
Total Nonperforming Assets | $ | 52,131 |  | $ | 35,736 |  | $ | 16,395 |
Asset Quality Ratios: |  |  |
Nonperforming loans as a percent of total loans | 1.00 | % | 0.70 | % |
Nonperforming assets as a percent of total loans plus OREO | 1.00 | % | 0.71 | % |

Our policy is to place loans in all categories in nonaccrual status when collection of interest or principal is doubtful, or generally when interest or principal payments are 90 days or more past due.
Nonperforming assets, or NPAs, increased $16.4 million to $52.1 million at March 31, 2016 compared to $35.7 million at December 31, 2015. The increase in NPAs was due to new nonperforming loans of approximately $24.0 million which were offset by principal reductions and loan charge-offs. The increase in new nonperforming loans was primarily the result of further deterioration in the loan portfolio acquired in the Merger of $13.5 million and two originated loans of $6.7 million.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
Deposits

(dollars in thousands) | March 31, 2016 |  |  | December 31, 2015 |  |  | $ Change |
Noninterest-bearing demand | $ | 1,212,231 |  |  | $ | 1,227,766 |  |  | $ | (15,535 | )
Interest-bearing demand | 605,852 |  |  | 586,936 |  |  | 18,916 |
Money market | 444,761 |  |  | 384,725 |  |  | 60,036 |
Savings | 1,047,871 |  |  | 1,061,265 |  |  | (13,394 | )
Certificates of deposit | 1,349,722 |  |  | 1,197,030 |  |  | 152,692 |
Brokered deposits | 357,488 |  |  | 418,889 |  |  | (61,401 | )
Total Deposits | $ | 5,017,925 |  |  | $ | 4,876,611 |  |  | $ | 141,314 |

Deposits are our primary source of funds. We believe that our deposit base is stable and that we have the ability to attract new deposits. Total deposits at March 31, 2016 increased $141.3 million, or 2.9 percent, primarily due to increases in CDs and money market accounts. CDs increased during the quarter due to CD rate promotions and money market accounts increased related to the promotion of a new product that started in January of 2016. Overall, our deposits, excluding brokered deposits, increased by $202.7 million, or 4.5 percent, from December 31, 2015. Our brokered deposits decreased $61.4 million compared to December 31, 2015. Brokered deposits consist of CDs, money market, and interest-bearing demand funds and are an additional source of funds utilized by the ALCO as a way to diversify funding sources, as well as manage our funding costs and structure. The decrease in brokered deposits was primarily due to the growth in CDs and money markets reducing our need to utilize brokered deposits to support asset growth.
Borrowings

(dollars in thousands) | March 31, 2016 |  |  | December 31, 2015 |  |  | $ Change |
Securities sold under repurchase agreements | $ | 60,025 |  |  | $ | 62,086 |  |  | $ | (2,061 | )
Short-term borrowings | 355,000 |  |  | 356,000 |  |  | (1,000 | )
Long-term borrowings | 116,468 |  |  | 117,043 |  |  | (575 | )
Junior subordinated debt securities | 45,619 |  |  | 45,619 |  |  | — |
Total Borrowings | $ | 577,112 |  |  | $ | 580,748 |  |  | $ | (3,636 | )

Borrowings are an additional source of funding for us. Total borrowings decreased by $3.6 million from December 31, 2015. During the three months ended March 31, 2016, our total deposits increased reducing the need for borrowings to support asset growth.
Information pertaining to short-term borrowings is summarized in the tables below at and for the three and twelve month periods ended March 31, 2016 and December 31, 2015.

| Securities Sold Under Repurchase Agreements
(dollars in thousands) | March 31, 2016 |  | December 31, 2015
Balance at the period end | $ | 60,025 |  |  | $ | 62,086 |
Average balance during the period | 64,303 |  |  | 44,394 |
Average interest rate during the period | 0.01 | % |  | 0.01 | %
Maximum month-end balance during the period | $ | 68,216 |  |  | $ | 62,086 |
Average interest rate at the period end | 0.01 | % |  | 0.01 | %
| Short-Term Borrowings
(dollars in thousands) | March 31, 2016 |  | December 31, 2015
Balance at the period end | $ | 355,000 |  |  | $ | 356,000 |
Average balance during the period | 329,389 |  |  | 257,117 |
Average interest rate during the period | 0.62 | % |  | 0.36 | %
Maximum month-end balance during the period | $ | 381,000 |  |  | $ | 356,000 |
Average interest rate at the period end | 0.59 | % |  | 0.52 | %

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
Information pertaining to long-term borrowings is summarized in the tables below at and for the three and twelve month periods ended March 31, 2016 and December 31, 2015.

| Long-Term Borrowings
(dollars in thousands) | March 31, 2016 |  | December 31, 2015
Balance at the period end | $ | 116,468 |  |  | $ | 117,043 |
Average balance during the period | 116,705 |  |  | 83,648 |
Average interest rate during the period | 0.95 | % |  | 0.94 | %
Maximum month-end balance during the period | $ | 116,852 |  |  | $ | 118,432 |
Average interest rate at the period end | 0.95 | % |  | 0.81 | %
| Junior Subordinated Debt Securities
(dollars in thousands) | March 31, 2016 |  | December 31, 2015
Balance at the period end | $ | 45,619 |  |  | $ | 45,619 |
Average balance during the period | 45,619 |  |  | 47,071 |
Average interest rate during the period | 2.99 | % |  | 2.82 | %
Maximum month-end balance during the period | $ | 45,619 |  |  | $ | 45,619 |
Average interest rate at the period end | 2.97 | % |  | 2.89 | %

Liquidity and Capital Resources
L iquidity is defined as a financial institution’s ability to meet its cash and collateral obligations at a reasonable cost. This includes the ability to satisfy the financial needs of depositors who want to withdraw funds or of borrowers needing to access funds to meet their credit needs. In order to manage liquidity risk our Board of Directors has delegated authority to the ALCO for formulation, implementation and oversight of liquidity risk management for S&T. ALCO’s goal is to maintain adequate levels of liquidity at a reasonable cost to meet funding needs in both a normal operating environment and for potential liquidity stress events. ALCO monitors and manages liquidity through various ratios, reviewing cash flow projections, performing stress tests and by having a detailed contingency funding plan. ALCO policy guidelines define graduated risk tolerance levels. If our liquidity position moves to a level that has been defined as high risk, specific actions are required, such as increased monitoring or the development of an action plan to reduce the risk position.
Our primary funding and liquidity source is a stable customer deposit base. We believe S&T has the ability to retain existing and attract new deposits, mitigating any funding dependency on other more volatile sources. Refer to the Deposits Section of Item 2, MD&A, for additional discussion on deposits. Although deposits are the primary source of funds, we have identified various funding sources that can be used as part of our normal funding program when either a structure or cost efficiency has been identified. Additional funding sources accessible to S&T include borrowing availability at the FHLB of Pittsburgh, Federal Funds lines with other financial institutions, the brokered deposit market, and borrowing availability through the Federal Reserve Borrower-In-Custody program.
An important component of S&T’s ability to effectively respond to potential liquidity stress events is maintaining a cushion of highly liquid assets. Highly liquid assets are those that can be converted to cash quickly, with little or no loss in value, to meet financial obligations. ALCO policy guidelines define a ratio of highly liquid assets to total assets by graduated risk tolerance levels of minimal, moderate and high. At March 31, 2016, S&T had $442.3 million in highly liquid assets, which consisted of $70.7 million in interest-bearing deposits with banks, $359.9 million in unpledged securities and $11.7 million in loans held for sale. The highly liquid assets to total assets resulted in an asset liquidity ratio of 6.9 percent at March 31, 2016. Also, at March 31, 2016, S&T had a remaining borrowing availability of $1.4 billion with the FHLB of Pittsburgh. Refer to Note 9 Borrowings in the Notes to Consolidated Financial Statements, and the Borrowing section of Item 2, MD&A, for more details.
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS - continued
The following summarizes capital amounts and ratios for S&T and S&T Bank for the dates presented:

(dollars in thousands) | Adequately Capitalized | Well- Capitalized |  | March 31, 2016 |  | December 31, 2015
| Amount | Ratio |  | Amount | Ratio
S&T Bancorp, Inc. |  |  |  |  |  |  |  |
Tier 1 leverage | 4.00 | % | 5.00 | % |  | $ | 544,881 |  | 8.98 | % |  | $ | 535,234 |  | 8.96 | %
Common equity tier 1 to risk-weighted assets | 4.50 | % | 6.50 | % |  | 524,881 |  | 9.74 | % |  | 515,234 |  | 9.77 | %
Tier 1 capital to risk-weighted assets | 6.00 | % | 8.00 | % |  | 544,881 |  | 10.11 | % |  | 535,234 |  | 10.15 | %
Total capital to risk-weighted assets | 8.00 | % | 10.00 | % |  | 623,509 |  | 11.57 | % |  | 611,859 |  | 11.60 | %
S&T Bank |  |  |  |  |  |  |  |
Tier 1 leverage | 4.00 | % | 5.00 | % |  | $ | 510,065 |  | 8.43 | % |  | $ | 502,114 |  | 8.43 | %
Common equity tier 1 to risk-weighted assets | 4.50 | % | 6.50 | % |  | 510,065 |  | 9.50 | % |  | 502,114 |  | 9.55 | %
Tier 1 capital to risk-weighted assets | 6.00 | % | 8.00 | % |  | 510,065 |  | 9.50 | % |  | 502,114 |  | 9.55 | %
Total capital to risk-weighted assets | 8.00 | % | 10.00 | % |  | 588,094 |  | 10.95 | % |  | 577,824 |  | 11.00 | %

In October 2015, we filed a new shelf registration statement on Form S-3 under the Securities Act of 1933 as amended, with the SEC, to replace the prior shelf registration statement we had filed in October 2012. The new shelf registration statement allows for the issuance of a variety of securities including debt and capital securities, preferred and common stock and warrants. We may use the proceeds from the sale of securities for general corporate purposes, which could include investments at the holding company level, investing in, or extending credit to subsidiaries, possible acquisitions and stock repurchases. As of March 31, 2016, we had not issued any securities pursuant to the new shelf registration statement.
Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Market risk is defined as the degree to which changes in interest rates, foreign exchange rates, commodity prices or equity prices can adversely affect a financial institution’s earnings or capital. For most financial institutions, including S&T, market risk primarily reflects exposures to changes in interest rates. Interest rate fluctuations affect earnings by changing net interest income and other interest-sensitive income and expense levels. Interest rate changes affect capital by changing the net present value of a bank’s future cash flows, and the cash flows themselves, as rates change. Accepting this risk is a normal part of banking and can be an important source of profitability and enhancing shareholder value. However, excessive interest rate risk can threaten a bank’s earnings, capital, liquidity and solvency. Our sensitivity to changes in interest rate movements is continually monitored by the ALCO. ALCO monitors and manages market risk through rate shock analyses, economic value of equity, or EVE, analysis and by performing stress tests in order to mitigate earnings and market value fluctuations due to changes in interest rates.
Rate shock analyses results are compared to a base case to provide an estimate of the impact that market rate changes may have on 12 months of pretax net interest income. The base case and rate shock analyses are performed on a static balance sheet. A static balance sheet is a no growth balance sheet in which all maturing and/or repricing cash flows are reinvested in the same product at the existing product spread. Rate shock analyses assume an immediate parallel shift in market interest rates and also include management assumptions regarding the impact of interest rate changes on non-maturity deposit products (noninterest-bearing demand, interest-bearing demand, money market and savings) and changes in the prepayment behavior of loans and securities with optionality. S&T policy guidelines limit the change in pretax net interest income over a 12 month horizon using rate shocks of +/- 300 basis points. Policy guidelines define the percent change in pretax net interest income by graduated risk tolerance levels of minimal, moderate and high. We have temporarily suspended the -200 and -300 basis point rate shock analyses. Due to the low interest rate environment, we believe the impact to net interest income when evaluating the -200 and -300 basis point rate shock scenarios does not provide meaningful insight into our interest rate risk position.
In order to monitor interest rate risk beyond the 12 month time horizon of rate shocks, we also perform EVE analysis. EVE represents the present value of all asset cash flows minus the present value of all liability cash flows. EVE rate change results are compared to a base case to determine the impact that market rate changes may have on our EVE. As with rate shock analysis, EVE analysis incorporates management assumptions regarding prepayment behavior of fixed rate loans and securities with optionality and the behavior and value of non-maturity deposit products. S&T policy guidelines limit the change in EVE given changes in rates of +/- 300 basis points. Policy guidelines define the percent change in EVE by graduated risk tolerance levels of minimal, moderate and high. We have also temporarily suspended the EVE -200 and -300 basis point scenarios due to the low interest rate environment.
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Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK - continued
The table below reflects the rate shock analyses and EVE analysis results. Both are in the minimal risk tolerance level.

| March 31, 2016 | December 31, 2015
Change in Interest Rate (basis points) | % Change in Pretax Net Interest Income |  | % Change in EVE |  | % Change in Pretax Net Interest Income |  | % Change in EVE |
+300 | 6.6 |  | 2.9 |  | 5.5 |  | (0.8 | )
+200 | 4.3 |  | 4.9 |  | 3.3 |  | 1.7 |
+100 | 2.2 |  | 4.9 |  | 1.6 |  | 2.3 |
-100 | (4.9 | ) | (13.0 | ) | (5.1 | ) | (11.1 | )

The results from the rate shock analyses are consistent with having an asset sensitive balance sheet. Having an asset sensitive balance sheet means more assets than liabilities will reprice during the measured time frames. The implications of an asset sensitive balance sheet will differ depending upon the change in market interest rates. For example, with an asset sensitive balance sheet in a declining interest rate environment, more assets than liabilities will decrease in rate. This situation could result in a decrease in net interest income and operating income. Conversely, with an asset sensitive balance sheet in a rising interest rate environment, more assets than liabilities will increase in rate. This situation could result in an increase in net interest income and operating income. As measured by rate shock analyses, an increase in interest rates would have a positive impact on pretax net interest income.
Our rate shock analyses indicate that there was an improvement in the percent change in pretax net interest income for our rates up and rates down shock scenarios when comparing March 31, 2016 to December 31, 2015. The improvement is mainly a result of an increase in variable rate loans and certificates of deposit repricing.
When comparing the EVE results for March 31, 2016 and December 31, 2015 the percent change to EVE has improved in the rates up shock scenarios and decreased in the rate down shock scenario. The percent change to EVE in our rate shock scenarios is mainly attributed to the change in value of our core deposits.
In addition to rate shocks and EVE analyses, we perform a market risk stress test at least annually. The market risk stress test includes sensitivity analyses and simulations. Sensitivity analyses are performed to help us identify which model assumptions cause the greatest impact on pretax net interest income. Sensitivity analyses may include changing prepayment behavior of loans and securities with optionality and the impact of interest rate changes on non-maturity deposit products. Simulation analyses may include the potential impact of rate shocks other than the policy guidelines of +/- 300 basis points, yield curve shape changes, significant balance mix changes and various growth scenarios. Simulations indicate that an increase in rates, particularly if the yield curve steepens, will most likely result in an improvement in pretax net interest income. We realize that some of the benefit reflected in our scenarios may be offset by a change in the competitive environment and a change in product preference by our customers.
Item 4. CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
Under the supervision and with the participation of S&T’s Chief Executive Officer, or CEO, and Chief Financial Officer, or CFO (its principal executive officer and principal financial officer, respectively), management has evaluated the effectiveness of the design and operation of S&T’s disclosure controls and procedures as of March 31, 2016. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934, as amended, or the Exchange Act, is recorded, processed, summarized and reported within the time periods required by the Securities and Exchange Commission, or the SEC, and that such information is accumulated and communicated to S&T’s management, including our CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure.
Based on and as of the date of such evaluation, our CEO and CFO concluded that the design and operation of our disclosure controls and procedures were effective in all material respects, as of the end of the period covered by this report.
Changes in Internal Control over Financial Reporting
During the quarter ended March 31, 2016, there were no changes made to S&T’s internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that materially affected, or are reasonably likely to materially affect, S&T’s internal control over financial reporting.
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PART II
OTHER INFORMATION
Item 1. Legal Proceedings
None
Item 1A. Risk Factors
There have been no material changes to the risk factors that we have previously disclosed in Item 1A – “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2015, as filed with the SEC on February 23, 2016.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
None
Item 3. Defaults Upon Senior Securities
None
Item 4. Mine Safety Disclosures
Not Applicable
Item 5. Other Information
None
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Item 6. Exhibits

31.1 | Rule 13a-14(a) Certification of the Chief Executive Officer.
31.2 | Rule 13a-14(a) Certification of the Chief Financial Officer.
32 | Rule 13a-14(b) Certification of the Chief Executive Officer and Chief Financial Officer.
101 | The following financial information from the Registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 is formatted in eXtensible Business Reporting Language (XBRL): (i) Unaudited Consolidated Balance Sheet at March 31, 2016 and Audited Consolidated Balance Sheet at December 31, 2015, (ii) Unaudited Consolidated Statements of Comprehensive Income for the Three Months ended March 31, 2016 and 2015, (iii) Unaudited Consolidated Statements of Changes in Shareholders’ Equity for the Three Months ended March 31, 2016 and 2015, (iv) Unaudited Consolidated Statements of Cash Flows for the Three Months ended March 31, 2016 and 2015 and (v) Notes to Unaudited Consolidated Financial Statements.

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S&T BANCORP, INC. AND SUBSIDIARIES
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

| S&T Bancorp, Inc. (Registrant)
Date: May 4, 2016 | /s/ Mark Kochvar
| Mark Kochvar Senior Executive Vice President and Chief Financial Officer (Principal Financial Officer and Duly Authorized Signatory)

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