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Stock Options | 3 Months Ended
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Mar. 31, 2015
Stock Options |
Stock Options | Note 5 — Stock Options On April 5, 2012, the Board of Directors adopted the 2012 International Bancshares Corporation Stock Option Plan (the “2012 Plan”). There are 800,000 shares available for stock option grants under the 2012 Plan. Under the 2012 Plan, both qualified incentive stock options (“ISOs”) and non-qualified stock options (“NQSOs”) may be granted. Options granted may be exercisable for a period of up to 10 years from the date of grant, excluding ISOs granted to 10% shareholders, which may be exercisable for a period of up to only five years. As of March 31, 2015, 204,000 shares were available for future grants under the 2012 Plan. A summary of option activity under the stock option plans for the three months ended March 31, 2015 is as follows:
|  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value ($) |
|  |  |  |  |  |  |  | (Dollars in Thousands) |
Options outstanding at December 31, 2014 |  | 993,889 |  | $ | 18.94 |  |  |  |  |
Plus: Options granted |  | 5,000 |  | 24.15 |  |  |  |  |
Less: |  |  |  |  |  |  |  |  |
Options exercised |  | 3,100 |  | 16.85 |  |  |  |  |
Options expired |  | 28,325 |  | 26.90 |  |  |  |  |
Options forfeited |  | 7,971 |  | 17.57 |  |  |  |  |
Options outstanding at March 31, 2015 |  | 959,493 |  | 18.75 |  | 6.59 |  | $ | 6,993 |
Options fully vested and exercisable at March 31, 2015 |  | 243,928 |  | $ | 16.13 |  | 3.02 |  | $ | 2,427 |
Stock-based compensation expense included in the consolidated statements of income for the three months ended March 31, 2015 and March 31, 2014 was approximately $292,000 and $161,000, respectively. As of March 31, 2015, there was approximately $3,759,000 of total unrecognized stock-based compensation cost related to non-vested options granted under the Company plans that will be recognized over a weighted average period of 2.2 years.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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