10-Q 1 aaon10-qq12015.htm 10-Q
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q

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

For the quarterly period ended March 31, 2015
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: 0-18953
AAON, INC.
(Exact name of registrant as specified in its charter)

Nevada | 87-0448736
(State or other jurisdiction | (IRS Employer
of incorporation or organization) | Identification No.)
2425 South Yukon, Tulsa, Oklahoma 74107
(Address of principal executive offices) (Zip Code)

(918) 583-2266
(Registrant's telephone number, including area code)
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 a 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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
Yes a No Not Applicable
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.

Large accelerated filer a | Accelerated filer
Non-accelerated filer | 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 a
As of May 1, 2015, registrant had outstanding a total of 54,137,123 shares of its $.004 par value Common Stock.

PART I – FINANCIAL INFORMATION
Item 1. Financial Statements.

AAON, Inc. and Subsidiaries
Consolidated Balance Sheets
(Unaudited)
| March 31, 2015 |  | December 31, 2014
Assets | (in thousands, except share and per share data)
Current assets: |  |  |
Cash and cash equivalents | $ | 33,526 |  |  | $ | 21,952 |
Certificates of deposit | 4,180 |  |  | 6,098 |
Investments held to maturity at amortized cost | 4,984 |  |  | 11,972 |
Accounts receivable, net | 39,865 |  |  | 44,092 |
Income tax receivable | 2,381 |  |  | 2,569 |
Note receivable | 25 |  |  | 30 |
Inventories, net | 44,546 |  |  | 37,618 |
Prepaid expenses and other | 910 |  |  | 609 |
Deferred tax assets | 6,272 |  |  | 6,143 |
Total current assets | 136,689 |  |  | 131,083 |
Property, plant and equipment: |  |  |  |  |
Land | 2,233 |  |  | 2,233 |
Buildings | 65,676 |  |  | 64,938 |
Machinery and equipment | 130,474 |  |  | 127,968 |
Furniture and fixtures | 10,068 |  |  | 10,388 |
Total property, plant and equipment | 208,451 |  |  | 205,527 |
Less: Accumulated depreciation | 115,680 |  |  | 113,605 |
Property, plant and equipment, net | 92,771 |  |  | 91,922 |
Certificates of deposit | 4,560 |  |  | 5,280 |
Investments held to maturity at amortized cost | 1,993 |  |  | 4,015 |
Note receivable | 746 |  |  | 817 |
Total assets | $ | 236,759 |  |  | $ | 233,117 |
Liabilities and Stockholders' Equity |  |  |  |  |
Current liabilities: |  |  |  |  |
Revolving credit facility | $ | — |  |  | $ | — |
Accounts payable | 10,125 |  |  | 11,370 |
Accrued liabilities | 28,518 |  |  | 31,343 |
Total current liabilities | 38,643 |  |  | 42,713 |
Deferred revenue | 955 |  |  | 1,006 |
Deferred tax liabilities | 13,363 |  |  | 13,677 |
Donations | 1,677 |  |  | 1,662 |
Commitments and contingencies |  |  |  |  |
Stockholders' equity: |  |  |  |  |
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued | — |  |  | — |
Common stock, $.004 par value, 100,000,000 shares authorized, 54,171,201 and 54,041,829 | 217 |  |  | 216 |
issued and outstanding at March 31, 2015 and December 31, 2014, respectively |  |  |  |  |
Additional paid-in capital | — |  |  | — |
Retained earnings | 181,904 |  |  | 173,843 |
Total stockholders' equity | 182,121 |  |  | 174,059 |
Total liabilities and stockholders' equity | $ | 236,759 |  |  | $ | 233,117 |

The accompanying notes are an integral part of these consolidated financial statements.
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AAON, Inc. and Subsidiaries
Consolidated Statements of Income
(Unaudited)
| Three Months Ended March 31,
| 2015 |  | 2014
| (in thousands, except share and per share data)
Net sales | $ | 76,768 |  |  | $ | 76,367 |
Cost of sales | 54,970 |  |  | 54,521 |
Gross profit | 21,798 |  |  | 21,846 |
Selling, general and administrative expenses | 8,317 |  |  | 7,629 |
Loss (gain) on disposal of assets | 5 |  |  | (24 | )
Income from operations | 13,476 |  |  | 14,241 |
Interest income, net | 44 |  |  | 69 |
Other expense, net | (75 | ) |  | (21 | )
Income before taxes | 13,445 |  |  | 14,289 |
Income tax provision | 5,046 |  |  | 4,467 |
Net income | $ | 8,399 |  |  | $ | 9,822 |
Earnings per share: |  |  |  |  |
Basic* | $ | 0.16 |  |  | $ | 0.18 |
Diluted* | $ | 0.15 |  |  | $ | 0.18 |
Cash dividends declared per common share*: | $ | — |  |  | $ | — |
Weighted average shares outstanding: |  |  |  |  |
Basic* | 54,083,897 |  |  | 55,041,831 |
Diluted* | 54,640,389 |  |  | 55,613,190 |

*Reflects three-for-two stock split effective July 16, 2014
The accompanying notes are an integral part of these consolidated financial statements.
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AAON, Inc. and Subsidiaries
Consolidated Statements of Stockholders' Equity
(Unaudited)
| Common Stock |  | Paid-in |  | Retained |  |
| Shares |  | Amount |  | Capital |  | Earnings |  | Total
| (in thousands)
Balances at December 31, 2014 | 54,042 |  |  | $ | 216 |  |  | $ | — |  |  | $ | 173,843 |  |  | $ | 174,059 |
Net income | — |  |  | — |  |  | — |  |  | 8,399 |  |  | 8,399 |
Stock options exercised and restricted | 260 |  |  | 2 |  |  | 2,178 |  |  | — |  |  | 2,180 |
stock awards vested, including tax benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | — |  |  | — |  |  | 438 |  |  | — |  |  | 438 |
Stock repurchased and retired | (131 | ) |  | (1 | ) |  | (2,616 | ) |  | (338 | ) |  | (2,955 | )
Balances at March 31, 2015 | 54,171 |  |  | $ | 217 |  |  | $ | — |  |  | $ | 181,904 |  |  | $ | 182,121 |

The accompanying notes are an integral part of these consolidated financial statements.
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AAON, Inc. and Subsidiaries
Consolidated Statements of Cash Flows
(Unaudited)
| Three Months Ended March 31,
| 2015 |  | 2014
Operating Activities | (in thousands)
Net income | $ | 8,399 |  |  | $ | 9,822 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Depreciation | 2,804 |  |  | 2,808 |
Amortization of bond premiums | 61 |  |  | 216 |
Provision for losses on accounts receivable, net of adjustments | (59 | ) |  | (130 | )
Provision for excess and obsolete inventories, net | 41 |  |  | 4 |
Share-based compensation | 438 |  |  | 412 |
Excess tax benefits from stock options exercised and restricted stock awards vested | (1,098 | ) |  | (356 | )
Gain on disposition of assets | 5 |  |  | (24 | )
Foreign currency transaction loss | 70 |  |  | 31 |
Interest income on note receivable | (8 | ) |  | (10 | )
Deferred income taxes | (443 | ) |  | (1,154 | )
Changes in assets and liabilities: |  |  |  |  |
Accounts receivable | 4,286 |  |  | (6,511 | )
Income tax receivable | 1,286 |  |  | 1,429 |
Inventories | (6,969 | ) |  | (2,755 | )
Prepaid expenses and other | (301 | ) |  | (397 | )
Accounts payable | (1,316 | ) |  | 3,441 |
Deferred revenue | 64 |  |  | 204 |
Accrued liabilities | (2,925 | ) |  | 2,039 |
Net cash provided by operating activities | 4,335 |  |  | 9,069 |
Investing Activities |  |  |  |  |
Capital expenditures | (3,587 | ) |  | (3,616 | )
Proceeds from sale of property, plant and equipment | — |  |  | 27 |
Maturities of certificates of deposits | 2,638 |  |  | 1,403 |
Maturities of investments | 8,445 |  |  | 2,717 |
Proceeds from called investments | 504 |  |  | 253 |
Principal payments from note receivable | 14 |  |  | 17 |
Net cash provided by investing activities | 8,014 |  |  | 801 |
Financing Activities |  |  |  |  |
Stock options exercised | 1,082 |  |  | 340 |
Excess tax benefits from stock options exercised and restricted stock awards vested | 1,098 |  |  | 356 |
Repurchase of stock | (2,955 | ) |  | (2,981 | )
Net cash used in financing activities | (775 | ) |  | (2,285 | )
Net increase in cash and cash equivalents | 11,574 |  |  | 7,585 |
Cash and cash equivalents, beginning of period | 21,952 |  |  | 12,085 |
Cash and cash equivalents, end of period | $ | 33,526 |  |  | $ | 19,670 |

The accompanying notes are an integral part of these consolidated financial statements.
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AAON, Inc., and Subsidiaries
Notes to the Consolidated Financial Statements
(Unaudited)
1. General
Basis of Presentation
The accompanying unaudited consolidated financial statements of AAON, Inc., a Nevada corporation, and our operating subsidiaries, all of which are wholly-owned, (collectively, the “Company”) have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the rules and regulations of the Securities and Exchange Commission (“SEC”). These financial statements have not been audited by the Company's independent registered public accounting firm, except that the consolidated balance sheet at December 31, 2014 is derived from audited consolidated financial statements. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The financial statements reflect all adjustments (all of which are of a normal recurring nature) which are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented. Interim results are not necessarily indicative of the results that may be expected for a full year. Certain disclosures have been condensed in or omitted from these consolidated financial statements. The accompanying unaudited financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014. All intercompany balances and transactions have been eliminated in consolidation.
We are engaged in the manufacture and sale of air conditioning and heating equipment consisting of rooftop units, chillers, packaged outdoor mechanical rooms, air handling units, makeup air units, energy recovery units, condensing units, self-contained units and coils.
Use of Estimates
The preparation of financial statements in conformity with U.S. 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 and the reported amounts of revenues and expenses during the reporting period. Because these estimates and assumptions require significant judgment, actual results could differ from those estimates and could have a significant impact on our results of operations, financial position and cash flows. We reevaluate our estimates and assumptions as needed, but at a minimum on a quarterly basis. The most significant estimates include, but are not limited to, the allowance for doubtful accounts, inventory reserves, warranty accrual, worker's compensation accrual, medical insurance accrual, income taxes and share-based compensation. Actual results could differ materially from those estimates.
Accounting Policies
A comprehensive discussion of our critical accounting policies and management estimates is included in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2014. There have been no significant changes in our critical accounting policies.
Recent Accounting Pronouncements
Changes to U.S. GAAP are established by the Financial Accounting Standards Board ("FASB") in the form of Accounting Standards Updates ("ASUs") to the FASB's Accounting Standards Codification.
We consider the applicability and impact of all ASUs. ASUs not listed below were assessed and determined to be either not applicable or are expected to have minimal impact on our consolidated financial statements and notes thereto.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for us on January 1, 2017, however, the FASB recently issued a proposal that, when finalized, would defer the effective date for us to January 1, 2018. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. We do not expect ASU 2014-09 will have a material effect on our consolidated financial statements and notes thereto.
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2. Revenue Recognition
We recognize revenues from sales of products when the title and risk of ownership pass to the customer. Final sales prices are fixed based on purchase orders. Sales allowances and customer incentives are treated as reductions to sales and are provided for based on historical experiences and current estimates. Sales of our products are moderately seasonal with the peak period being July - November of each year.
In addition, we present revenues net of sales tax and net of certain payments to our independent manufacturer representatives (“Representatives”). Representatives are national companies that are in the business of providing HVAC units and other related products and services to customers. The end user customer orders a bundled group of products and services from the Representative and expects the Representative to fulfill the order. Only after the specifications are agreed to by the Representative and the customer, and the decision is made to use an AAON HVAC unit, will we receive notice of the order. We establish the amount we must receive for our HVAC unit (“minimum sales price”), but do not control the total order price that is negotiated by the Representative with the end user customer.
We are responsible for billings and collections resulting from all sales transactions, including those initiated by our Representatives. The Representatives submit the total order price to us for invoicing and collection. The total order price includes our minimum sales price and an additional amount which may include both the Representatives’ fee and amounts due for additional products and services required by the customer. These additional products and services may include controls purchased from another manufacturer to operate the unit, start-up services, and curbs for supporting the unit (“Third Party Products”). All are associated with the purchase of a HVAC unit but may be provided by the Representative or another third party. The Company is under no obligation related to Third Party Products.
The Representatives’ fee and Third Party Products amounts (“Due to Representatives”) are paid only after all amounts associated with the order are collected from the customer. The amount of payments to our Representatives were $14.0 million and $11.9 million for the three months ended March 31, 2015 and 2014, respectively.
The Company also sells extended warranties on parts for various lengths of time ranging from 6 months to 10 years. Revenue for these separately priced warranties is deferred and recognized on a straight-line basis over the separately priced warranty period.
3. Investments
Certificates of Deposit – We held $8.7 million and $11.4 million in certificates of deposit at March 31, 2015 and December 31, 2014, respectively. At March 31, 2015, the certificates of deposit bear interest ranging from 0.20% to 0.60% per annum and have various maturities ranging from less than one month to approximately 16 months.
Investments Held to Maturity – Our investments held to maturity are comprised of $7.0 million of corporate notes and bonds with original maturities ranging from less than one month to approximately 16 months. The investments have moderate risk with S&P ratings ranging from AA- to BBB-.
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We record the amortized cost basis and accrued interest of the corporate notes and bonds in the Consolidated Balance Sheets. We record the interest and amortization of bond premium to interest income in the Consolidated Statements of Income.
The following summarizes the amortized cost and estimated fair value of our investments held to maturity as of
March 31, 2015 and December 31, 2014:

| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized (Loss) |  | Fair Value
March 31, 2015: | (in thousands)
Current assets: |  |  |  |  |  |  |
Investments held to maturity | $ | 4,984 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 4,993 |
Non current assets: |  |  |  |  |  |  |  |  |  |  |
Investments held to maturity | 1,993 |  |  | — |  |  | (10 | ) |  | 1,983 |
Total | $ | 6,977 |  |  | $ | 9 |  |  | $ | (10 | ) |  | $ | 6,976 |
December 31, 2014: |  |  |  |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |  |  |
Investments held to maturity | $ | 11,972 |  |  | $ | — |  |  | $ | (7 | ) |  | $ | 11,965 |
Non current assets: |  |  |  |  |  |  |  |  |  |  |
Investments held to maturity | 4,015 |  |  | — |  |  | (16 | ) |  | 3,999 |
Total | $ | 15,987 |  |  | $ | — |  |  | $ | (23 | ) |  | $ | 15,964 |

4. Accounts Receivable
Accounts receivable and the related allowance for doubtful accounts are as follows:

| March 31, 2015 |  | December 31, 2014
| (in thousands)
Accounts receivable | $ | 39,977 |  |  | $ | 44,263 |
Less: Allowance for doubtful accounts | (112 | ) |  | (171 | )
Total, net | $ | 39,865 |  |  | $ | 44,092 |

| Three months ended
| March 31, 2015 |  | March 31, 2014
Allowance for doubtful accounts: | (in thousands)
Balance, beginning of period | $ | 171 |  |  | $ | 193 |
Provisions for losses on accounts receivables, net of recoveries | (51 | ) |  | (130 | )
Accounts receivable written off | (8 | ) |  | — |
Balance, end of period | $ | 112 |  |  | $ | 63 |

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5. Inventories
Inventories are valued at the lower of cost or market. Cost is determined by the first-in, first-out (“FIFO”) method. We establish an allowance for excess and obsolete inventories based on product line changes, the feasibility of substituting parts and the need for supply and replacement parts.

| March 31, 2015 |  | December 31, 2014
| (in thousands)
Raw materials | $ | 39,384 |  |  | $ | 34,153 |
Work in process | 2,691 |  |  | 2,262 |
Finished goods | 3,226 |  |  | 1,917 |
| 45,301 |  |  | 38,332 |
Less: Allowance for excess and obsolete inventories | (755 | ) |  | (714 | )
Total, net | $ | 44,546 |  |  | $ | 37,618 |

The related changes in the allowance for excess and obsolete inventories account are as follows:

| Three months ended
| March 31, 2015 |  | March 31, 2014
Allowance for excess and obsolete inventories: | (in thousands)
Balance, beginning of period | $ | 714 |  |  | $ | 579 |
Provisions for excess and obsolete inventories | 41 |  |  | 4 |
Inventories written off | — |  |  | — |
Balance, end of period | $ | 755 |  |  | $ | 583 |

6. Supplemental Cash Flow Information

| Three months ended
| March 31, 2015 |  | March 31, 2014
Supplemental disclosures: | (in thousands)
Interest paid | $ | — |  |  | $ | — |
Income taxes paid | $ | 4,203 |  |  | $ | 683 |
Non-cash investing and financing activities: |  |  |  |  |
Non-cash capital expenditures | (71 | ) |  | 2 |

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7. Warranties
The Company has warranties with various terms ranging from 18 months for parts to 25 years for certain heat exchangers. The Company has an obligation to replace parts or service its products if conditions under the warranty are met. A provision is made for estimated warranty costs at the time the related products are sold based upon the warranty period, historical trends, new products and any known identifiable warranty issues.
Changes in the warranty accrual are as follows:

| Three months ended
| March 31, 2015 |  | March 31, 2014
Warranty accrual: | (in thousands)
Balance, beginning of period | $ | 8,130 |  |  | $ | 7,352 |
Payments made | (886 | ) |  | (893 | )
Provisions | 861 |  |  | 989 |
Balance, end of period | $ | 8,105 |  |  | $ | 7,448 |
Warranty expense: | $ | 861 |  |  | $ | 989 |

8. Accrued Liabilities
Accrued liabilities are as follows:

| March 31, 2015 |  | December 31, 2014
| (in thousands)
Warranty | $ | 8,105 |  |  | $ | 8,130 |
Due to representatives | 8,737 |  |  | 10,188 |
Payroll | 2,851 |  |  | 3,153 |
Profit sharing | 1,523 |  |  | 2,016 |
Worker's compensation | 282 |  |  | 535 |
Medical self-insurance | 606 |  |  | 532 |
Customer prepayments | 1,490 |  |  | 1,639 |
Donations | 1,526 |  |  | 1,600 |
Employee benefits and other | 3,398 |  |  | 3,550 |
Total | $ | 28,518 |  |  | $ | 31,343 |

9. Revolving Credit Facility
Our revolving credit facility provides for maximum borrowings of $30.0 million which is provided by BOKF, NA dba Bank of Oklahoma, formerly known as Bank of Oklahoma, N.A. ("Bank of Oklahoma"). Under the line of credit, there is one standby letter of credit totaling $0.8 million. Borrowings available under the revolving credit facility at March 31, 2015 were $29.2 million. Interest on borrowings is payable monthly at LIBOR plus 2.5%. No fees are associated with the unused portion of the committed amount. We had no outstanding balance under the revolving credit facility at March 31, 2015 and December 31, 2014. Our weighted average interest rate was 2.62% at March 31, 2015 and 2.70% at December 31, 2014. The termination date of the revolving credit facility is July 27, 2016.
As of March 31, 2015, we were in compliance with our financial covenants. These covenants require that we meet certain parameters related to our tangible net worth, total liabilities to tangible net worth ratio and working capital. At March 31, 2015, our tangible net worth was $182.1 million and met the requirement of being at or above $95.0 million. Our total liabilities to tangible net worth ratio was 0.30 to 1, and met the requirement of not being above 2 to 1. Our working capital was $98.0 million and met the requirement of being at or above $40.0 million.
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10. Income Taxes
Income tax expense for each of the three months ended March 31, 2015 and 2014 was $5.0 million, or 37.5% of pre-tax income, and $4.5 million, or 31.3% of pre-tax income, respectively. The Company’s estimated annual 2015 effective tax rate is approximately 37.0%. This differs from the U.S. federal statutory rate of 35% due principally to items such as state and local income taxes, the federal domestic activities deduction and state income tax credits. The Company's income tax expense for the three months ended March 31, 2014 was decreased by $0.7 million due to a change in method of accounting for state investment credits to recognize them as each annual portion of the credit becomes available for use on tax returns.
We file income tax returns in the U.S., state and foreign income tax returns jurisdictions. We are subject to U.S. examinations for tax years 2011 to present, and to non-U.S. income tax examinations for the tax years of 2010 to present. In addition, we are subject to state and local income tax examinations for the tax years 2010 to present. The Company continues to evaluate its need to file returns in various state jurisdictions. Any interest or penalties would be recognized as a component of income tax expense.
11. Share-Based Compensation
As discussed in Note 13, the Company had a three-for-two stock split effective July 16, 2014. All share and per share information has been updated to reflect the effect of this stock split.
We have historically maintained a stock option plan for key employees, directors and consultants (“the 1992 Plan”). The 1992 Plan provided for 14.9 million shares to be issued under the plan in the form of stock options. Under the terms of the 1992 Plan, the exercise price of shares granted may not be less than 85% of the fair market value at the date of the grant. Options granted to directors prior to May 25, 2004 vest one year from the date of grant and are exercisable for nine years thereafter. Options granted to directors on or after May 25, 2004 vest one-third each year, commencing one year after the date of grant. All other options granted vest at a rate of 20% per year, commencing one year after date of grant, and are exercisable during years 2-10.
On May 22, 2007, our stockholders adopted a Long-Term Incentive Plan (“LTIP”) which provides an additional 3.3 million shares that can be granted in the form of stock options, stock appreciation rights, restricted stock awards, performance units and performance awards. Since inception of the LTIP, non-qualified stock options and restricted stock awards have been granted with the same vesting schedule as the previous plan. Under the LTIP, the exercise price of shares granted may not be less than 100% of the fair market value at the date of the grant.
The total pre-tax compensation cost related to unvested stock options not yet recognized as of March 31, 2015 is $1.9 million and is expected to be recognized over a weighted-average period of 2.2 years.
The following weighted average assumptions were used to determine the fair value of the stock options granted on the original grant date for expense recognition purposes for options granted during the three months ended March 31, 2015 and 2014 using a Black Scholes Model:

| Three months ended
| March 31, 2015 |  | March 31, 2014
Director and Officers: |  |  |
Expected dividend yield | 1.80 | % |  | N/A |
Expected volatility | 44.14 | % |  | N/A |
Risk-free interest rate | 1.96 | % |  | N/A |
Expected life (in years) | 8 |  |  | N/A |
Employees: |  |  |  |  |
Expected dividend yield | 1.80 | % |  | 2.00 | %
Expected volatility | 44.13 | % |  | 45.73 | %
Risk-free interest rate | 2.08 | % |  | 2.40 | %
Expected life (in years) | 8 |  |  | 8 |

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The expected term of the options is based on evaluations of historical and expected future employee exercise behavior. The risk-free interest rate is based on the U.S. Treasury rates at the date of grant with maturity dates approximately equal to the expected life at the grant date. Volatility is based on historical volatility of our stock over time periods equal to the expected life at grant date.
The following is a summary of stock options vested and exercisable as of March 31, 2015:

Range of Exercise Prices |  | Number of Shares |  | Weighted Average Remaining Contractual Life (in years) |  | Weighted Average Exercise Price |  | Intrinsic Value (in thousands)
$4.31-$7.18 |  | 331,944 |  |  | 4.04 |  | $ | 5.71 |  |  | $ | 6,246 |
$7.44-$8.17 |  | 15,300 |  |  | 6.19 |  | 7.65 |  |  | 258 |
$8.65-$23.57 |  | 152,175 |  |  | 6.98 |  | 8.84 |  |  | 2,388 |
Total |  | 499,419 |  |  | 5.00 |  | $ | 6.73 |  |  | $ | 8,892 |

The following is a summary of stock options vested and exercisable as of March 31, 2014:

Range of Exercise Prices |  | Number of Shares |  | Weighted Average Remaining Contractual Life (in years) |  | Weighted Average Exercise Price |  | Intrinsic Value (in thousands)
$3.21-$6.89 |  | 448,440 |  |  | 3.97 |  | $ | 4.86 |  |  | $ | 6,153 |
$7.13-$8.17 |  | 56,175 |  |  | 7.17 |  | 7.25 |  |  | 637 |
$8.65-$19.13 |  | 82,812 |  |  | 8.15 |  | 8.69 |  |  | 819 |
Total |  | 587,427 |  |  | 4.87 |  | $ | 5.63 |  |  | $ | 7,609 |

A summary of option activity under the plans is as follows:

Options | Shares |  | Weighted Average Exercise Price
Outstanding at December 31, 2014 | 1,235,150 |  |  | $ | 8.16 |
Granted | 62,605 |  |  | 22.93 |
Exercised | (189,750 | ) |  | 5.69 |
Forfeited or Expired | (13,650 | ) |  | 9.40 |
Outstanding at March 31, 2015 | 1,094,355 |  |  | $ | 9.41 |
Exercisable at March 31, 2015 | 499,419 |  |  | $ | 6.73 |

The total intrinsic value of options exercised during the three months ended March 31, 2015 and 2014 was $3.2 million and $0.7 million, respectively. The cash received from options exercised during the three months ended March 31, 2015 and 2014 was $1.1 million and $0.3 million, respectively. The impact of these cash receipts is included in financing activities in the accompanying Consolidated Statements of Cash Flows.
Since 2007, as part of the LTIP, the Compensation Committee of the Board of Directors has authorized and issued restricted stock awards to directors and key employees. Restricted stock awards granted to directors vest one-third each year. All other restricted stock awards vest at a rate of 20% per year. The fair value of restricted stock awards is based on the fair market value of AAON common stock on the respective grant dates, reduced for the present value of dividends.
These awards are recorded at their fair value on the date of grant and compensation cost is recorded using straight-line vesting over the service period. At March 31, 2015, unrecognized compensation cost related to unvested restricted stock awards was approximately $5.4 million, which is expected to be recognized over a weighted average period of 2.5 years.
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A summary of the unvested restricted stock awards is as follows:

Restricted stock | Shares |  | Weighted Average Grant Date Fair Value
Unvested at December 31, 2014 | 414,846 |  |  | $ | 16.76 |
Granted | 78,775 |  |  | 21.86 |
Vested | (6,362 | ) |  | 13.57 |
Forfeited | (8,223 | ) |  | 19.62 |
Unvested at March 31, 2015 | 479,036 |  |  | $ | 17.59 |

A summary of share-based compensation is as follows:

| Three months ended
| March 31, 2015 |  | March 31, 2014
Grant date fair value of awards during the period: | (in thousands)
Options | $ | 657 |  |  | $ | 120 |
Restricted stock | 1,722 |  |  | 270 |
Total | $ | 2,379 |  |  | $ | 390 |

Share-based compensation expense: |  |  |
Options | $ | 152 |  |  | $ | 208 |
Restricted stock | 286 |  |  | 204 |
Total | $ | 438 |  |  | $ | 412 |

Income tax benefit related to share-based compensation: |  |  |
Options | $ | 1,076 |  |  | $ | 324 |
Restricted stock | 22 |  |  | 32 |
Total | $ | 1,098 |  |  | $ | 356 |

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12. Earnings Per Share
Basic net income per share is calculated by dividing net income by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share assumes the conversion of all potentially dilutive securities and is calculated by dividing net income by the sum of the weighted average number of shares of common stock outstanding plus all potentially dilutive securities. Dilutive common shares consist primarily of stock options and restricted stock awards.

| Three months ended
| March 31, 2015 |  | March 31, 2014
| (in thousands, except share and per share data)
Numerator: |  |  |
Net income | $ | 8,399 |  |  | $ | 9,822 |
Denominator: |  |  |  |  |
Basic weighted average shares* | 54,083,897 |  |  | 55,041,831 |
Effect of dilutive stock options and restricted stock* | 556,492 |  |  | 571,359 |
Diluted weighted average shares* | 54,640,389 |  |  | 55,613,190 |
Earnings per share: |  |  |  |  |
Basic* | $ | 0.16 |  |  | $ | 0.18 |
Diluted* | $ | 0.15 |  |  | $ | 0.18 |
Anti-dilutive shares: |  |  |  |  |
Shares* | 124,114 |  |  | 20,450 |

*Reflects three-for-two stock split effective July 16, 2014
13. Stockholders’ Equity
Stock Repurchase - On May 17, 2010, the Board authorized a stock buyback program, targeting repurchases of up to approximately 5% (approximately 2.9 million shares) of our outstanding stock from time to time in open market transactions. Since the inception of the program, we repurchased a total of approximately 2.6 million shares for an aggregate price of $31.5 million, or an average price of $11.97 per share. We purchased the shares at current market prices. No repurchases were made under the program for the three months ended March 31, 2015 and 2014.
On July 1, 2005, we entered into a stock repurchase arrangement by which employee-participants in our 401(k) savings and investment plan are entitled to have shares of AAON stock in their accounts sold to the Company. The maximum number of shares to be repurchased is contingent upon the number of shares sold by employees. Through March 31, 2015, we repurchased approximately 5.2 million shares for an aggregate price of $42.2 million, or an average price of $8.18 per share. We purchased the shares at current market prices. For each of the three months ended March 31, 2015 and 2014, we repurchased approximately 0.1 million and 0.1 million shares, respectively.
Periodically, the Company repurchases shares of AAON stock from certain of its directors and employees. The number of shares to be repurchased is contingent upon Board approval. Through March 31, 2015, we repurchased approximately 1.8 million shares for an aggregate price of $14.0 million, or an average price of $7.76 per share. We purchased the shares at current market prices. For each of the three months ended March 31, 2015 and 2014 we repurchased approximately 0.002 million and 0.044 million shares under this program.
Dividends - At the discretion of the Board of Directors, we pay semi-annual cash dividends. Board approval is required to determine the date of declaration and amount for each semi-annual dividend payment.
On May 2, 2014, the Board of Directors declared a regular semi-annual cash dividend of $0.09 per share, to stockholders of record at the close of business on June 12, 2014, the record date. Those dividends were paid on July 1, 2014.
On June 5, 2014, the Board of Directors declared a three-for-two stock split of the Company's common stock paid in the form of a stock dividend on July 16, 2014. Stockholders of record at the close of business on June 27, 2014 received one additional share for every two shares they held as of that date. All share and per share information has been updated to reflect the effects of this stock split.
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At a meeting of the Board of Directors on November 4, 2014, the Board declared a regular semi-annual cash dividend of $0.09 per share. The dividends were payable to shareholders of record at the close of business on December 2, 2014, the record date, and were paid on December 23, 2014.
14. Commitments and Contingencies
We are subject to various claims and legal actions that arise in the ordinary course of business. We closely monitor these claims and legal actions and frequently consult with our legal counsel to determine whether they may, when resolved, have a material adverse effect on our financial position, results of operations or cash flows and we accrue and/or disclose loss contingencies as appropriate. We have concluded that the likelihood is remote that the ultimate resolution of any pending litigation or claims will be material or have a material adverse effect on the Company's business, financial position, results of operations or cash flows.
We are party to short-term, cancellable and non-cancellable, fixed price contracts with major suppliers for the purchase of raw material and component parts. We expect to receive delivery of raw materials for use in our manufacturing operations. These contracts are not accounted for as derivatives instruments because they meet the normal purchases and sales exemption. We had no material contractual purchase agreements as of March 31, 2015.
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.
The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our consolidated financial statements and the notes thereto, which are included in this report, and our audited consolidated financial statements and the notes thereto, which are included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014. This discussion contains or incorporates by reference “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are not historical facts, but rather are based on expectations, estimates, assumptions and projections about our industry, business and future financial results, based on information available at the time this report is filed with the SEC or, with respect to any document incorporated by reference, available at the time that such document was prepared. Our actual results could differ materially from the results contemplated by these forward-looking statements due to a number of factors, including those identified in the section entitled “Forward-Looking Statements” in this Item 2 of this Quarterly Report on Form 10-Q and in the section entitled “Risk Factors” in Item 1A of our Annual Report on Form 10-K for the fiscal year ended December 31, 2014. We do not assume any obligation to update or revise any forward-looking statements to reflect changed assumptions, the occurrence of anticipated or unanticipated events, new information or circumstances or otherwise, except as required by law.
Overview
We engineer, manufacture and market air conditioning and heating equipment consisting of rooftop units, chillers, packaged outdoor mechanical rooms, air handling units, makeup air units, energy recovery units, condensing units, self-contained units and coils. These products are marketed and sold to retail, manufacturing, educational, lodging, supermarket, medical and other commercial industries. We market our products to all 50 states in the United States and certain provinces in Canada. Foreign sales were approximately $2.8 million of our total net sales for the three months just ended and $4.7 million of our sales during the same period of 2014.
Our business can be affected by a number of economic factors, including the level of economic activity in the markets in which we operate. The uncertainty of the economy has negatively impacted the commercial and industrial new construction markets. A further decline in economic activity could result in a decrease in our sales volume and profitability. Sales in the commercial and industrial new construction markets correlate closely to the number of new homes and buildings that are built, which in turn is influenced by cyclical factors such as interest rates, inflation, consumer spending habits, employment rates and other macroeconomic factors over which we have no control.
We sell our products to property owners and contractors through a network of manufacturers’ representatives and our internal sales force. The demand for our products is influenced by national and regional economic and demographic factors. The commercial and industrial new construction market is subject to cyclical fluctuations in that it is generally tied to housing starts, but has a lag factor of six to 18 months. Housing starts, in turn, are affected by such factors as interest rates, the state of the economy, population growth and the relative age of the population. When new construction is down, we emphasize the replacement market. The new construction market in 2014 through the first quarter of 2015 continued to be unpredictable and uneven. Thus, we continue to emphasize promotion of the benefits of AAON equipment to property owners in the replacement market.
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The principal components of cost of goods sold are labor, raw materials, component costs, factory overhead, freight and engineering expense. The principal high volume raw materials used in our manufacturing processes are steel, copper and aluminum, and are obtained from domestic suppliers. We also purchase from domestic manufacturers certain components, including compressors, motors and electrical controls.
The price levels of our raw materials have remained relatively consistent the past few years, but the market continues to be volatile and unpredictable as a result of the uncertainty related to the U.S. economy and a weakening global economy. For the three months ended March 31, 2015, the price for aluminum, galvanized steel and stainless steel increased by approximately 12.6%, 2.2% and 7.0%, respectively, from the three months ended March 31, 2014. The price for copper decreased by approximately (7.3)% for the same period.
In 2011, we began using an all aluminum microchannel condenser coil on our small rooftop unit product line and, in 2013, we began using this condenser coil in our larger rooftop product line as well. The condenser coil is the outdoor coil of a conventional air conditioning system. We expect to be using this type of condenser coil throughout the complete rooftop unit product line. This will reduce our copper tube usage in this component of the product, however, copper will remain a high volume raw material because of its use throughout the equipment.
We may attempt to limit the impact of price fluctuations on these materials by entering into cancellable and non-cancellable fixed price contracts with our major suppliers for periods of six to 18 months. We expect to receive delivery of raw materials from our fixed price contracts for use in our manufacturing operations.
The following are recent highlights and items that impacted our results of operations, cash flows and financial condition:

• | Overall units sales increased as compared to the same period last year, offset by a decrease in the average sales price per unit, resulting in an overall increase in sales of approximately $0.4 million.

• | Our portfolio of investments continue to mature, resulting in an increase in cash and cash equivalents of approximately $11.6 million.

• | We recorded additional sales tax expense and made payments of approximately $0.6 million with certain states, resulting in an increase in SG&A.

Results of Operations
Three Months Ended March 31, 2015 vs. Three Months Ended March 31, 2014
Units Sold

| Three Months Ended March 31,
| 2015 |  | 2014
Rooftop Units | 3,323 |  |  | 3,098 |
Split Systems | 593 |  |  | 579 |
Outdoor Mechanical Rooms | 17 |  |  | 32 |
Total Units | 3,933 |  |  | 3,709 |

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Net Sales

|  | Three Months Ended March 31,
|  | 2015 |  | 2014 |  | Change | % Change
|  | (in thousands, except unit data)
Net sales |  | $ | 76,768 |  |  | $ | 76,367 |  |  | $ | 401 |  | 0.5 | %
Total units |  | 3,933 |  |  | 3,709 |  |  | 224 |  | 6.0 | %

The increase in net sales was due to an increase in overall units sold of approximately 6.0%, offset by a decrease in the average price per unit of approximately 5.4%.
Cost of Sales

|  | Three Months Ended March 31, |  | Percent of Sales
|  | 2015 |  | 2014 |  | 2015 |  | 2014
|  | (in thousands) |  |  |  |
Cost of sales |  | $ | 54,970 |  |  | $ | 54,521 |  |  | 71.6 | % |  | 71.4 | %
Gross Profit |  | 21,798 |  |  | 21,846 |  |  | 28.4 | % |  | 28.6 | %

The principal components of cost of sales are labor, raw materials, component costs, factory overhead, freight out and engineering expense. The principal high volume raw materials used in our manufacturing processes are steel, copper and aluminum, which are obtained from domestic suppliers. Cost of sales increased due to the corresponding increase in sales and increased raw material costs.
Twelve-month average raw material cost per pound as of March 31:

|  | 2015 |  | 2014 |  | % Change
Copper |  | $ | 3.94 |  |  | $ | 4.25 |  |  | (7.3 | )%
Galvanized Steel |  | $ | 0.47 |  |  | $ | 0.46 |  |  | 2.2 | %
Stainless Steel |  | $ | 1.53 |  |  | $ | 1.43 |  |  | 7.0 | %
Aluminum |  | $ | 1.70 |  |  | $ | 1.51 |  |  | 12.6 | %

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Selling, General and Administrative Expenses

|  | Three Months Ended March 31, |  | Percent of Sales
|  | 2015 |  | 2014 |  | 2015 |  | 2014
|  | (in thousands) |  |  |  |
Warranty |  | $ | 861 |  |  | $ | 989 |  |  | 1.1 | % |  | 1.3 | %
Profit Sharing |  | 1,523 |  |  | 1,611 |  |  | 2.0 | % |  | 2.1 | %
Salaries & Benefits |  | 2,435 |  |  | 2,441 |  |  | 3.2 | % |  | 3.2 | %
Stock Compensation |  | 307 |  |  | 266 |  |  | 0.4 | % |  | 0.3 | %
Advertising |  | 202 |  |  | 126 |  |  | 0.3 | % |  | 0.2 | %
Depreciation |  | 229 |  |  | 222 |  |  | 0.3 | % |  | 0.3 | %
Insurance |  | 305 |  |  | 273 |  |  | 0.4 | % |  | 0.4 | %
Professional Fees |  | 642 |  |  | 563 |  |  | 0.8 | % |  | 0.7 | %
Donations |  | 111 |  |  | 56 |  |  | 0.1 | % |  | 0.1 | %
Other |  | 1,702 |  |  | 1,082 |  |  | 2.2 | % |  | 1.4 | %
Total SG&A |  | 8,317 |  |  | 7,629 |  |  | 10.8 | % |  | 10.0 | %

The overall increase in SG&A was primarily due to additional sales tax expense and payments of approximately $0.6 million.
Income Taxes

|  | Three Months Ended March 31, |  | Effective Tax Rate
|  | 2015 |  | 2014 |  | 2015 |  | 2014
|  | (in thousands) |  |  |  |
Income tax provision |  | $ | 5,046 |  |  | $ | 4,467 |  |  | 37.5 | % |  | 31.3 | %

The Company’s estimated annual 2015 effective tax rate is expected to be approximately 37.0%. The Company's income tax expense for the three months ended March 31, 2014 was decreased by $0.7 million due to a change in method of accounting for state investment credits to recognize them as each annual portion of the credit becomes available for use on tax returns.
Liquidity and Capital Resources
Our working capital and capital expenditure requirements are generally met through net cash provided by operations and the occasional use of our revolving credit facility.
Our cash and short-term investments increased $2.7 million from December 31, 2014 to March 31, 2015 and totaled $42.7 million at March 31, 2015; while long-term investments decreased $(2.7) million, from $9.3 million to $6.6 million, respectively.
Under the line of credit, there was one standby letter of credit of $0.8 million as of March 31, 2015. At March 31, 2015, we have $29.2 million of borrowings available under the revolving credit facility. No fees are associated with the unused portion of the committed amount.
We had no outstanding balance under the revolving credit facility at March 31, 2015 and December 31, 2014. Interest on borrowings is payable monthly at LIBOR plus 2.5%. Our weighted average interest rate was 2.62% at March 31, 2015 and 2.70% at December 31, 2014. The termination date of the revolving credit facility is July 27, 2016.
At March 31, 2015, we were in compliance with all of the covenants under the revolving credit facility. We are obligated to comply with certain financial covenants under the revolving credit facility. These covenants require that we meet certain parameters related to our tangible net worth, total liabilities to tangible net worth ratio and working capital. At March 31, 2015, our tangible net worth was $182.1 million, which meets the requirement of being at or above $95.0 million. Our total liabilities to tangible net worth ratio was 0.30 to 1.0 which meets the requirement of not being above 2 to 1. Our working capital was $98.0 million, which meets the requirement of being at or above $40.0 million.
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Effective July 25, 2014, the Company amended its revolving credit facility with the Bank of Oklahoma. The amendment extends the termination date of the revolving credit facility to July 27, 2016.
On May 2, 2014, the Board of Directors declared a regular semi-annual cash dividend of $0.09 per share, to stockholders of record at the close of business on June 12, 2014, the record date. Those dividends were paid on July 1, 2014.
On June 5, 2014, the Board of Directors declared a three-for-two stock split of the Company's common stock to be paid in the form of a stock dividend on July 16, 2014. Stockholders of record at the close of business on June 27, 2014 received one additional share for every two shares they held as of that date. All share and per share information has been updated to reflect the effects of this stock split.
At a meeting of the Board of Directors on November 4, 2014, the Board declared a regular semi-annual cash dividend of $0.09 per share. The dividends were payable to shareholders of record at the close of business on December 2, 2014, the record date, and were paid on December 23, 2014.
We repurchased shares of stock from the open market, our employees’ 401(k) savings investment plan, option exercises of our directors and officers, and vested restricted stock from employees, directors and officers in the amount of $3.0 million for 0.1 million shares and $3.0 million for 0.2 million shares during the three months ended March 31, 2015 and 2014, respectively. We repurchased the shares at current market prices. Prior year share amounts have been adjusted for the three-for-two stock split effective July 16, 2014.
Based on historical performance and current expectations, we believe our cash and cash equivalents balance, the projected cash flows generated from our operations, our existing committed revolving credit facility (or comparable financing) and our expected ability to access capital markets will satisfy our working capital needs, capital expenditures and other liquidity requirements associated with our operations in 2015 and the foreseeable future.
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Statement of Cash Flows
The following table reflects the major categories of cash flows for the three months ended March 31, 2015 and 2014. For additional details, see the Condensed Consolidated Statements of Cash Flows in the condensed consolidated financial statements.

| Three months ended March 31,
| 2015 |  | 2014
| (in thousands)
Operating Activities |  |  |
Net Income | $ | 8,399 |  |  | $ | 9,822 |
Income statement adjustments, net | 1,811 |  |  | 1,797 |
Changes in assets and liabilities: |  |  |
Accounts receivable | 4,286 |  |  | (6,511 | )
Income tax receivable | 1,286 |  |  | 1,429 |
Inventories | (6,969 | ) |  | (2,755 | )
Prepaid expenses and other | (301 | ) |  | (397 | )
Accounts payable | (1,316 | ) |  | 3,441 |
Deferred revenue | 64 |  |  | 204 |
Accrued liabilities | (2,925 | ) |  | 2,039 |
Net cash provided by operating activities | 4,335 |  |  | 9,069 |
Investing Activities |  |  |
Capital expenditures | (3,587 | ) |  | (3,616 | )
Maturities of investments and proceeds from called investments | 11,587 |  |  | 4,373 |
Other | 14 |  |  | 44 |
Net cash provided by investing activities | 8,014 |  |  | 801 |
Financing Activities |  |  |
Stock options exercised and excess tax benefits from stock options exercised and restricted stock awards vested | 2,180 |  |  | 696 |
Repurchase of stock | (2,955 | ) |  | (2,981 | )
Net cash used in financing activities | $ | (775 | ) |  | $ | (2,285 | )

Cash Flows Provided by Operating Activities
The decrease in cash flows from operations is primarily due to the increase in inventories as the Company enters the high demand portion of the year; decreases in accounts payable and accrued liabilities associated with faster payment to vendors and representatives; and a decrease in accounts receivable due to better collections resulting in days sales outstanding of approximately 47 days as compared to approximately 54 days for the same period last year.
Cash Flows Provided by Investing Activities
Our portfolio of investments continues to mature with no reinvestment activity. Capital expenditures remained consistent for both periods. The capital expenditure program for 2015 is estimated to be approximately $22.0 million.
Cash Flows Used in Financing Activities
Options exercised by employees increased substantially as compared to last year, which increased the related excess tax benefits as well. Buyback activity was relatively consistent for both periods.
Off-Balance Sheet Arrangements
We are not party to any off-balance sheet arrangements that have or are reasonably likely to have a material current or future effect on our financial condition, changes in financial condition, revenues, expenses, results of operations, liquidity, capital expenditures or capital resources.
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Contractual Obligations
We had no material contractual purchase agreements as of March 31, 2015.
Critical Accounting Policies
There have been no material changes in the Company’s critical accounting policies during the three months ended March 31, 2015.
Recent Accounting Pronouncements
See Note 1 of the Notes to the Consolidated Financial Statements for a discussion of recent accounting pronouncements.
Forward-Looking Statements
This Quarterly Report on Form 10-Q includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “expects”, “anticipates”, “intends”, “plans”, “believes”, “seeks”, “estimates”, “will”, “should”, and variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of 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 such forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. We undertake no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise. Important factors that could cause results to differ materially from those in the forward-looking statements include (1) the timing and extent of changes in raw material and component prices, (2) the effects of fluctuations in the commercial/industrial new construction market, (3) the timing and extent of changes in interest rates, as well as other competitive factors during the year, and (4) general economic, market or business conditions.
Item 3. Quantitative and Qualitative Disclosures About Market Risk.
Commodity Price Risk
We are exposed to volatility in the prices of commodities used in some of our products and we may use fixed price cancellable and non-cancellable contracts with our major suppliers for periods of six to 18 months to manage this exposure.
Item 4. Controls and Procedures.
(a) Evaluation of Disclosure Controls and Procedures
As of the end of the period covered by this Quarterly Report on Form 10-Q, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer with the oversight of the Audit Committee, regarding the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended). Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded, as of the end of the period covered by this Quarterly Report, that our disclosure controls and procedures were effective.
(c) Changes in Internal Control over Financial Reporting
There have been no changes in internal control over financial reporting that occurred during our last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
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PART II – OTHER INFORMATION
Item 1. Legal Proceedings.
We are subject to various claims and legal actions that arise in the ordinary course of business. We closely monitor these claims and legal actions and frequently consult with our legal counsel to determine whether they may, when resolved, have a material adverse effect on our financial position, results of operations, or cash flows and we accrue and/or disclose loss contingencies as appropriate. We have concluded that the likelihood is remote that the ultimate resolution of any pending litigation or claims will be material or have a material adverse effect on the Company's business, financial position, results of operations or cash flows.
Item 1A. Risk Factors.
In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2014. The risk factors described in our Annual Report could materially adversely affect our business, financial condition or future results. There have been no material changes to the risk factors included in our 2014 Annual Report.
Item 2. Unregistered Sales of Equity and Securities and Use of Proceeds.
As discussed in Note 13 in the Notes to the Consolidated Financial Statements, the Company had a three-for-two stock split effective July 16, 2014. All share and per share information has been updated to reflect the effect of this stock split.
On May 17, 2010, the Board authorized a stock buyback program, targeting repurchases of up to approximately 5% (2.9 million shares) of the Company's outstanding stock. We repurchased a total of approximately 2.6 million shares under this program for an aggregate price of $31.5 million, or an average price of $11.97 per share. We purchased the shares at current market prices.
On July 1, 2005, we entered into a stock repurchase arrangement by which employee-participants in our 401(k) savings and investment plan are entitled to have shares of AAON stock in their accounts sold to the Company. The maximum number of shares to be repurchased is contingent upon the number of shares sold by employees. Through March 31, 2015, we repurchased approximately 5.2 million shares for an aggregate price of $42.2 million, or an average price of $8.18 per share. We purchased the shares at current market prices.
Periodically, the Company repurchases shares of AAON stock from certain of its directors and employees. The number of shares to be repurchased is contingent upon Board approval. Through March 31, 2015, we repurchased approximately 1.8 million shares for an aggregate price of $14.0 million, or an average price of $7.76 per share. We purchased the shares at current market prices.
Repurchases during the first quarter of 2015 were as follows:

|  | ISSUER PURCHASES OF EQUITY SECURITIES
Period |  | (a) Total Number of Shares (or Units) Purchased |  | (b) Average Price Paid Per Share (or Unit) |  | (c) Total Number of Shares (or Units) Purchased as part of Publicly Announced Plans or Programs |  | (d) Maximum Number (or Approximate Dollar Value) of Shares (or Units) that may yet be Purchased under the Plans or Programs
January 2015 |  | 39,148 |  |  | $ | 21.48 |  |  | 39,148 |  |  | — |
February 2015 |  | 40,829 |  |  | 23.25 |  |  | 40,829 |  |  | — |
March 2015 |  | 50,953 |  |  | 22.97 |  |  | 50,953 |  |  | — |
Total |  | 130,930 |  |  | $ | 22.61 |  |  | 130,930 |  |  | — |

Item 3. Defaults Upon Senior Securities.
None.
Item 4. Mine Safety Disclosures.
Not applicable.
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Item 4A. Submission of Matters to a Vote of Security Holders.
None.
Item 5. Other Information.
None.
Item 6. Exhibits.

| (a) Exhibits
| (i) | Exhibit 31.1 | Section 302 Certification of CEO
| (ii) | Exhibit 31.2 | Section 302 Certification of CFO
| (iii) | Exhibit 32.1 | Section 1350 Certification of CEO
| (iv) | Exhibit 32.2 | Section 1350 Certification of CFO

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

| AAON, INC.
Dated: May 7, 2015 | By: | /s/ Norman H. Asbjornson
|  | Norman H. Asbjornson President/CEO
Dated: May 7, 2015 | By: | /s/ Scott M. Asbjornson
|  | Scott M. Asbjornson Chief Financial Officer

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