13.    Share-Based Compensation

The following table summarizes the components of share-based compensation expense in the Consolidated Statements of Operations (in thousands):

 

 

Stock Options

2008 Omnibus Equity Incentive Plan (the "2008 Plan")

On August 12, 2008, the Company adopted the iBioPharma 2008 Omnibus Equity Incentive Plan for employees, officers, directors and external service providers. The original 2008 Plan provided that the Company may grant options to purchase stock and/or make awards of restricted stock up to an aggregate amount of 1 million shares. On December 18, 2013, the 2008 Plan was amended to increase the number of shares reserved for awards under the Plan from 1 million to 1.5 million. Stock options granted under the 2008 Plan may be either incentive stock options (as defined by Section 422 of the Internal Revenue Code of 1986, as amended) or non-qualified stock options at the discretion of the Board of Directors. Vesting of service awards occurred ratably on the anniversary of the grant date over the service period, generally three or five years, as determined at the time of grant. Vesting of performance awards occurred when the performance criteria had been satisfied. The Company used historical data to estimate forfeiture rates. The 2008 Plan had a term of ten (10) years and, as a result, the 2008 Plan expired by its terms on August 12, 2018.

iBio, Inc. 2018 Omnibus Equity Incentive Plan (the "2018 Plan")

On December 18, 2018, the Company's stockholders, upon recommendation of the Board of Directors on November 9, 2018, approved the 2018 Plan. The total number of shares of common stock reserved under the 2018 Plan is 3.5 million. Stock options granted under the 2018 Plan may be either incentive stock options (as defined by Section 422 of the Internal Revenue Code of 1986, as amended), non-qualified stock options, or restricted stock and determined at the discretion of the Board of Directors.

Vesting of service awards will be determined by the Board of Directors and stated in the award agreements. In general, vesting will occur ratably on the anniversary of the grant date over the service period, generally three or five years, as determined at the time of grant. Vesting of performance awards will occur when the performance criteria has been satisfied. The Company uses historical data to estimate forfeiture rates. The 2018 Plan has a term of ten (10) years and expires by its terms on November 9, 2028.

In addition, on December 18, 2018, the Company's stockholders, upon recommendation of the Board of Directors, also approved an amendment to the Company's 2008 Plan to allow the Company to permit a one-time option exchange program under which the Company would offer eligible employees and non-employee directors the opportunity to exchange certain outstanding options on a four-for-three basis for new stock options exercisable at a lower price under the 2018 Plan (the "Option Exchange").

On January 22, 2019, the Company filed with the Securities and Exchange Commission a Tender Offer Statement on Schedule TO defining the terms and conditions of the Option Exchange, whereby the Company was offering eligible employees and non-employee directors ("Eligible Option Holders") the opportunity to exchange for new options covering a lesser number of shares of the Company's common stock ("Replacement Options"), at a ratio of four-for-three (the "Exchange Ratio"), any options issued by the Company prior to January 22, 2019 that were outstanding under its 2008 Plan that had an exercise price greater than the closing price per share of iBio's common stock on the NYSE American on the grant date of the Replacement Options ("Eligible Exchange Options"), so that for each four shares of common stock subject to an Eligible Exchange Option, the option holder would receive a Replacement Option to purchase three shares under the 2018 Plan. On February 20, 2019, the completion date of the Option Exchange (the "Replacement Option Grant Date"), the Company canceled the options accepted for exchange and granted 874,310 Replacement Options in exchange for 1,165,750 options issued under the 2008 Plan.

The Replacement Options:

The Company had reserved 1,311,332 shares of common stock for the Option Exchange.

Issuances of stock options during 2019 and 2018 were as follows:

Effective April 1, 2019, the Company granted each member of its Board of Directors a stock option agreement under the 2018 Plan whereby each director has the option to purchase 50,000 shares of the Company's common stock at a price of $0.90 per share. The options vest over a period of three years and expire in ten years.

In July 2017 through May 2018, the Company granted stock options to employees to purchase 21,000 shares of common stock. These options vest ratably over a three-year service period, expire ten years from the date of grant, and have a weighted-average exercise price of $3.12 per share.

The following table summarizes all stock option activity during the years ended June 30, 2019 and 2018:

 

 

The following table summarizes information about options outstanding and exercisable at June 30, 2019:

 

 

The total fair value of stock options that vested during 2019 and 2018 was approximately $57,000 and $972,000, respectively. As of June 30, 2019, there was approximately $376,000 of total unrecognized compensation cost related to non-vested stock options that the Company expects to recognize over a weighted-average period of 2.1 years.

The weighted-average grant date fair value of stock options granted during 2019 and 2018 was $0.43 and $2.77 per share, respectively. The Company estimated the fair value of options granted using the Black-Scholes option pricing model with the following assumptions:

 

 

The aggregate intrinsic value in the table above represents the total intrinsic value, based on the Company’s closing stock price of $0.71 as of June 30, 2019, $0.90 as of June 30, 2018, and $3.86 as of June 30, 2017, which would have been received by the option holders had all option holders exercised their options as of that date.