The following table reflects the activity of the General Partner capital for the three and six months ended June 30, 2019 and 2018, respectively (dollars in thousands):

Any transactions resulting in the issuance of additional common and preferred stock of the General Partner result in a corresponding issuance by the Operating Partnership of an equivalent amount of common and preferred units to the General Partner.

SHARE/UNIT REPURCHASE PROGRAM

In September 2012, the Board of Directors of the General Partner renewed and authorized an increase to the General Partner’s repurchase program (“Repurchase Program”). The General Partner has authorization to repurchase up to $150 million of its outstanding common stock under the renewed Repurchase Program, which it may repurchase from time to time in open market transactions at prevailing prices or through privately negotiated transactions. As of June 30, 2019, the General Partner has repurchased and retired 394,625 shares of its outstanding common stock for an aggregate cost of approximately $11 million (all of which occurred in the year ended December 31, 2012), with a remaining authorization under the Repurchase Program of $139 million. Concurrent with these repurchases, the General Partner sold to the Operating Partnership common units for approximately $11 million.

DIVIDEND REINVESTMENT AND STOCK PURCHASE PLAN

The General Partner has a Dividend Reinvestment and Stock Purchase Plan (the “DRIP”) which commenced in March 1999 under which approximately 5.5 million shares of the General Partner’s common stock have been reserved for future issuance. The DRIP provides for automatic reinvestment of all or a portion of a participant’s dividends from the General Partner’s shares of common stock. The DRIP also permits participants to make optional cash investments up to $5,000 a month without restriction and, if the Company waives this limit, for additional amounts subject to certain restrictions and other conditions set forth in the DRIP prospectus filed as part of the Company’s effective registration statement on Form S-3 filed with the SEC for the approximately 5.5 million shares of the General Partner’s common stock reserved for issuance under the DRIP.

STOCK OPTION PLANS

In May 2013, the General Partner established the 2013 Incentive Stock Plan (the “2013 Plan”) under which a total of 4,600,000 shares have been reserved for issuance.

On June 5, 2015, in connection with employment agreements entered into with each of Messrs. Rudin and DeMarco (together, the “Executive Employment Agreements”), the Company granted options to purchase a total of 800,000 shares of the General Partner’s common stock, exercisable for a period of ten years with an exercise price equal to the closing price of the General Partner’s common stock on the grant date of $17.31 per share, with 400,000 of such options vesting in three equal annual installments commencing on the first anniversary of the grant date (“Time Vesting Options”) and fully vesting on June 5, 2018, and 400,000 of such options vesting if the General Partner’s common stock traded at or above $25.00 per share for 30 consecutive trading days while the executive is employed

(“Price Vesting Options”), or on or before June 30, 2019, subject to certain conditions. The Price Vesting Options vested on July 5, 2016 on account of the price vesting condition being achieved. 

Information regarding the Company’s stock option plans is summarized below for the three months ended June 30, 2019 and 2018, respectively:

Information regarding the Company’s stock option plans is summarized below for the six months ended June 30, 2019 and 2018, respectively.

There were no stock options exercised under any stock option plans for the six months ended June 30, 2019 and 2018, respectively. The Company has a policy of issuing new shares to satisfy stock option exercises.

As of June 30, 2019 and December 31, 2018, the stock options outstanding had a weighted average remaining contractual life of approximately 5.9 and 6.4 years, respectively.

The Company recognized stock options expense of zero and $77,000 for the three months ended June 30, 2019 and 2018, respectively, and zero and $193,000 for the six months ended June 30, 2019 and 2018, respectively.

AO LTIP UNITS (Appreciation-Only LTIP Units)

Pursuant to the terms of the DeMarco Employment Agreement (see Note 12: Commitments and Contingencies-Executive Employment Agreements), the Company entered into an AO Long-Term Incentive Plan Award Agreement (the “AO LTIP Award Agreement”) with Mr. DeMarco on March 13, 2019 that provided for the grant to Mr. DeMarco of 625,000 AO LTIP Units. AO LTIP Units are a class of partnership interests in the Operating Partnership that are intended to qualify as “profits interests” for federal income tax purposes and generally only allow the recipient to realize value to the extent the fair market value of a share of Common Stock exceeds the threshold level set at the time the AO LTIP Units are granted, subject to any vesting conditions applicable to the award. The threshold level was fixed at $21.46 in the AO LTIP Award Agreement, the closing price of the Common Stock as reported on the New York Stock Exchange (the “NYSE”) on the date of grant. The value of vested AO LTIP Units is realized through conversion of the AO LTIP Units into common units of limited partnership interests of the Operating Partnership (the “Common Units”). The number of Common Units into which vested AO LTIP Units may be converted is determined based on the quotient of (i) the excess of the fair market value of the Common Stock on the conversion date over the threshold level designated at the time the AO LTIP Unit was granted (i.e., $21.46), divided by (ii) the fair market value of the Common Stock on the conversion date. AO LTIP Units, once vested, have a finite term during which they may be converted into Common Units, within ten years from the grant date of the AO LTIP Units or they are forfeited. In addition, the AO LTIP Units issued to Mr. DeMarco are subject to the following vesting conditions:

(i) 250,000 of the AO LTIP Units shall vest and become exercisable on the earliest date on which the closing price of the Common Stock, as reported on the NYSE, or if the Common Stock is not then traded on the NYSE, then the closing price of the Common Stock on any other securities exchange on which the Common Stock is traded or quoted (the “Securities Market”), has been equal to or greater than $25.00 per share for at least 30 consecutive trading days, provided that such date occurs prior to March 13, 2023 (the “Outside Date”);

(ii) an additional 250,000 of the AO LTIP Units shall vest and become exercisable on the earliest date on which the closing price of the Common Stock, as reported on the NYSE, or if the Common Stock is not then traded on the NYSE, then the closing price of the Common Stock on the Securities Market, has been equal to or greater than $28.00 per share for at least 30 consecutive trading days, provided that such date occurs prior to the Outside Date; and

(iii) an additional 125,000 of the AO LTIP Units shall vest and become exercisable on the earliest date on which the closing price of the Common Stock, as reported on the NYSE, or if the Common Stock is not then traded on the NYSE, then the closing price of the Common Stock on the Securities Market, has been equal to or greater than $31.00 per share for at least 30 consecutive trading days, provided that such date occurs prior to the Outside Date.

Mr. DeMarco will generally receive special income allocations in respect of an AO LTIP Unit equal to 10 percent (or such other percentage specified in the applicable award agreement) of the income allocated in respect of a Common Unit. Upon conversion of AO LTIP Units to Common Units, Mr. DeMarco will be entitled to receive in respect of each such AO LTIP Unit, on a per unit basis, a special cash distribution equal to 10% (or such other percentage specified in the applicable award agreement) of the distributions received by a holder of an equivalent number of Common Units during the period from the grant date of the AO LTIP Units through the date of conversion. The Company has reserved shares of common stock under the 2013 Plan for issuance upon vesting and conversion of the AO LTIP Units in accordance with their terms and conditions.

The weighted average fair value of the AO LTIP Units granted during the six months ended June 30, 2019 was $3.98 per AO LTIP Unit. The fair value of each AO LTIP Unit grant is estimated on the date of grant using the Monte Carlo method. The following weighted average assumptions are included in the Company’s fair value calculations of AO LTIP Units granted during the six months ended June 30, 2019:

As of June 30, 2019, the Company had $2.3 million of total unrecognized compensation cost related to unvested AO LTIP Units granted under the Company’s stock compensation plans. That cost is expected to be recognized over a remaining weighted average period of 3.7 years. The Company recognized AO LTIP unit expense of $155,000 and $187,000 for the three and six months ended June 30, 2019, respectively.

RESTRICTED STOCK AWARDS

The Company has issued stock awards (“Restricted Stock Awards”) to officers, certain other employees and non-employee members of the Board of Directors of the General Partner, which allow the holders to each receive a certain amount of shares of the General Partner’s common stock generally over a one to seven year vesting period, of which 26,136 unvested shares were legally outstanding at June 30, 2019. Vesting of the Restricted Stock Awards issued to executive officers and certain other employees is based on time and service.

On June 5, 2015, in connection with the new executive employment agreements signed at that time, the Company granted a total of 37,550.54 Restricted Stock Awards, which were valued in accordance with ASC 718 – Stock Compensation, at their fair value. These awards vested equally over a three year period on each annual anniversary date of the grant date.

All currently outstanding and unvested Restricted Stock Awards provided to the officers, certain other employees, and members of the Board of Directors of the General Partner were issued under the 2013 Plan.

Information regarding the Restricted Stock Awards grant activity is summarized below for the three months ended June 30, 2019 and 2018, respectively:

Information regarding the Restricted Stock Awards grant activity is summarized below for the six months ended June 30, 2019 and 2018, respectively:

As of June 30, 2019, the Company had $56,000 of total unrecognized compensation cost related to unvested Restricted Stock Awards granted under the Company’s stock compensation plans. That cost is expected to be recognized over a remaining weighted average period of 0.3 years.

PERFORMANCE SHARE UNITS

On June 5, 2015, in connection with the Executive Employment Agreements, the Company granted a total of 112,651.64 performance share units (“PSUs”) which was to vest from 0 to 150 percent of the number of PSUs granted based on the Company’s total shareholder return relative to a peer group of equity office REITs over a three year performance period starting from the grant date, each PSU evidencing the right to receive a share of the General Partner’s common stock upon vesting. The PSUs were also entitled to the payment of dividend equivalents in respect of vested PSUs in the form of additional PSUs. The PSUs were valued in accordance with ASC 718,

Compensation - Stock Compensation, at their fair value on the grant date, utilizing a Monte-Carlo simulation to estimate the probability of the vesting conditions being satisfied. The PSUs vested at 100 percent on June 5, 2018 based on the calculation of the achievement of the Company’s total shareholder return, for which shares of the General Partner’s common stock were issued under the 2013 Plan.

As of June 30, 2019, the Company had no unrecognized compensation cost as there are no unvested PSUs outstanding under the Company’s stock compensation plans.

LONG-TERM INCENTIVE PLAN AWARDS

On March 8, 2016, the Company granted Long-Term Incentive Plan (“LTIP”) awards to senior management of the Company, including the General Partner’s executive officers (the “2016 LTIP Awards”). All of the 2016 LTIP Awards were in the form of units in the Operating Partnership (“LTIP Units”) and constitute awards under the 2013 Plan. For Messrs. Rudin, DeMarco and Tycher, approximately 25 percent of the target 2016 LTIP Award was in the form of a time-based award that vested after three years on March 8, 2019 (the “2016 TBV LTIP Units”), and the remaining approximately 75 percent of the target 2016 LTIP Award was in the form of a performance-based award under a new Outperformance Plan (the “2016 OPP”) adopted by the General Partner’s Board of Directors consisting of a multi-year, performance-based equity compensation plan and related forms of award agreement (the “2016 PBV LTIP Units”). For all other executive officers, approximately 40 percent of the target 2016 LTIP Award was in the form of 2016 TBV LTIP Units and the remaining approximately 60 percent of the target 2016 LTIP Award was in the form of 2016 PBV LTIP Units. The 2016 TBV LTIP Units vested on March 8, 2019.

The 2016 OPP was designed to align the interests of senior management to relative and absolute performance of the Company over a three year performance period from March 8, 2016 through March 7, 2019. Participants in the 2016 OPP would only earn the full awards if, over the three year performance period, the Company achieves a 50 percent absolute total stockholder return (“TSR”) and if the Company is in the 75th percentile of performance versus the NAREIT Office Index. As the targets for vesting were not achieved, the 2016 PBV LTIP Units did not vest and were forfeited.

On April 4, 2017, the Company granted LTIP awards to senior management of the Company, including the General Partner’s executive officers (the “2017 LTIP Awards”). All of the 2017 LTIP Awards were in the form of LTIP Units and constitute awards under the 2013 Plan. For Messrs. DeMarco, Tycher and Rudin, approximately twenty-five percent (25%) of the 2017 LTIP Award was in the form of a time-based award that vests after three years on April 4, 2020 (the “2017 TBV LTIP Units”), and the remaining approximately seventy-five percent (75%) of the 2017 LTIP Award was in the form of a performance-based award under the Company’s Outperformance Plan (the “2017 OPP”) adopted by the General Partner’s Board of Directors, consisting of a multi-year, performance-based equity compensation plan and related forms of award agreement (the “2017 PBV LTIP Units”). For all other executive officers, approximately forty percent (40%) of the 2017 LTIP Award was in the form of 2017 TBV LTIP Units and the remaining approximately sixty percent (60%) of the 2017 LTIP Award was in the form of 2017 PBV LTIP Units.

The 2017 OPP was designed to align the interests of senior management to relative and absolute performance of the Company over a three-year performance period from April 4, 2017 through April 3, 2020. Participants in the 2017 OPP will only earn the full awards if, over the three year performance period, the Company achieves a thirty-six percent (36%) absolute TSR and if the Company is in the 75th percentile of performance as compared to the NAREIT office index.

On April 20, 2018, the Company granted LTIP awards to senior management of the Company, including the General Partner’s executive officers (the “2018 LTIP Awards”). All of the 2018 LTIP Awards were in the form of LTIP Units and constitute awards under the 2013 Plan. For Messrs. DeMarco and Tycher, approximately twenty-five percent (25%) of the grant date fair value of the 2018 LTIP Award was in the form of a time-based award that vests after three years on April 20, 2021 (the “2018 TBV LTIP Units”), and the remaining approximately seventy-five percent (75%) of the grant date fair value of the 2018 LTIP Award was in the form of a performance-based award under the Company’s Outperformance Plan (the “2018 OPP”) adopted by the General Partner’s Board of Directors, consisting of a multi-year, performance-based equity compensation plan and related forms of award agreement (the “2018 PBV LTIP Units”). For all other executive officers, approximately fifty percent (50%) of the grant date fair value of the 2018 LTIP Award was in the form of 2018 TBV LTIP Units and the remaining approximately fifty percent (50%) of the grant date fair value of the 2018 LTIP Award was in the form of 2018 PBV LTIP Units.

The 2018 OPP was designed to align the interests of senior management to relative and absolute performance of the Company over a three year performance period from April 20, 2018 through April 19, 2021. Participants in the 2018 OPP will only earn the full awards if, over the three year performance period, the Company achieves a thirty-six percent (36%) absolute TSR and if the Company’s TSR is in the 75th percentile of performance as compared to the office REITs in the NAREIT index.

On March 22, 2019, the Company granted LTIP awards to senior management of the Company, including the General Partner’s executive officers (the “2019 LTIP Awards”). All of the 2019 LTIP Awards were in the form of LTIP Units and constitute awards under the 2013 Plan. For Mr. DeMarco, approximately 25 percent of the target 2019 LTIP Awards were in the form of time-based LTIP

Units that vest after three years on March 22, 2022 (the “2019 TBV LTIP Units”), and the remaining approximately 75 percent of the grant date fair value of his 2019 LTIP Award will be in the form of performance-based LTIP Units under the Company’s Outperformance Plan (the “2019 OPP”) adopted by the General Partner’s Board of Directors, consisting of a multi-year, performance-based equity compensation plan and related forms of award agreement (the “2019 PBV LTIP Units”). For Messrs. Tycher, Smetana, Wagner, Cardoso and Hilton, fifty percent (50%) of the grant date fair value of their respective 2019 LTIP Awards is in the form of 2019 TBV LTIP Units and the remaining fifty percent (50%) of the grant date fair value of their respective 2019 LTIP Awards is in the form of 2019 PBV LTIP Units. Mr. DeBari, who was promoted to Chief Accounting Officer on March 13, 2019, received 100 percent of his 2019 LTIP Award in the form of 2019 TBV LTIP Units.

The 2019 OPP was designed to align the interests of senior management to relative and absolute performance of the Company over a three year performance period from March 22, 2019 through March 21, 2022. Participants of performance-based awards in the 2019 OPP will only earn the full awards if, over the three-year performance period, the Company achieves a thirty-six percent (36%) absolute total stockholder return (“TSR”) and if the Company’s TSR is in the 75th percentile of performance as compared to the office REITs in the NAREIT index.

LTIP Units will remain subject to forfeiture depending on the extent that the 2017 LTIP Awards, 2018 LTIP Awards and 2019 LTIP Awards vest. The number of LTIP Units to be issued initially to recipients of the 2017 PBV LTIP Awards, 2018 PBV LTIP Awards and 2019 PBV LTIP Awards is the maximum number of LTIP Units that may be earned under the awards. The number of LTIP Units that actually vest for each award recipient will be determined at the end of the performance measurement period. TSR for the Company and for the Index over the three-year measurement period and other circumstances will determine how many LTIP Units vest for each recipient; if they are fewer than the number issued initially, the balance will be forfeited as of the performance measurement date.

Prior to vesting, recipients of LTIP Units will be entitled to receive per unit distributions equal to one-tenth (10 percent) of the regular quarterly distributions payable on a Common Unit but will not be entitled to receive any special distributions. Distributions with respect to the other nine-tenths (90 percent) of regular quarterly distributions payable on a common unit will accrue but shall only become payable upon vesting of the LTIP Unit. After vesting of the 2016 TBV LTIP Units, 2017 TBV LTIP Units, 2018 LTIP and 2019 LTIP Awards or the end of the measurement period for the 2017 PBV LTIP Units, 2018 PBV LTIP Units and 2019 PBV LTIP Awards, the number of LTIP Units, both vested and unvested, will be entitled to receive distributions in an amount per unit equal to distributions, both regular and special, payable on a Common Unit.

As a result of targets for vesting not being achieved or management and other personnel changes during the six months ended June 30, 2019, the employees forfeited and cancelled 354,422 2016 LTIP Awards, 1,792 2017 LTIP Awards and 3,540 2018 LTIP Awards. As of June 30, 2019, a total of 11,155 2016 PBV LTIP Units, 79,266 2016 TBV LTIP Units, 390,654 2017 PBV LTIP Units, 80,434 2017 TBV LTIP Units, 629,252 2018 PBV LTIP Units, 193,217 2018 TBV LTIP Units, 392,476 2019 PBV LTIP Units and 173,147 2019 TBV LTIP Units, net of LTIP Units forfeited and cancelled, were outstanding. The LTIP Units were valued in accordance with ASC 718 – Stock Compensation, at their fair value. The Company has reserved shares of common stock under the 2013 Plan for issuance upon vesting and conversion of the LTIP Units in accordance with their terms and conditions.

As of June 30, 2019, the Company had $15.9 million of total unrecognized compensation cost related to unvested LTIP awards granted under the Company’s stock compensation plans. That cost is expected to be recognized over a weighted average period of 2.6 years.

DEFERRED STOCK COMPENSATION PLAN FOR DIRECTORS

The Amended and Restated Deferred Compensation Plan for Directors, which commenced January 1, 1999, allows non-employee directors of the Company to elect to defer up to 100 percent of their annual retainer fee into deferred stock units. The deferred stock units are convertible into an equal number of shares of common stock upon the directors’ termination of service from the Board of Directors or a change in control of the Company, as defined in the plan. Pursuant to the termination of service of five directors from the Board of Directors on June 12, 2019, the Company converted 193,949 stock units into shares of common stock. Deferred stock units are credited to each director quarterly using the closing price of the Company’s common stock on the applicable dividend record date for the respective quarter. Each participating director’s account is also credited for an equivalent amount of deferred stock units based on the dividend rate for each quarter.

During the three months ended June 30, 2019 and 2018, respectively, 1,173 and 6,168 deferred stock units were earned. During the six months ended June 30, 2019 and 2018, 7,043 and 13,587 deferred stock units were earned, respectively. As of June 30, 2019, March 31, 2019 and December 31, 2018, there were 55,003, 243,085 and 236,383 deferred stock units outstanding, respectively.

EARNINGS PER SHARE/UNIT

Basic EPS or EPU excludes dilution and is computed by dividing net income available to common shareholders or unitholders by the weighted average number of shares or units outstanding for the period. Diluted EPS or EPU reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock.

The following information presents the Company’s results for the three and six months ended June 30, 2019 and 2018 in accordance with ASC 260, Earnings Per Share (dollars in thousands, except per share amounts):

Mack-Cali Realty Corporation:

The following schedule reconciles the weighted average shares used in the basic EPS calculation to the shares used in the diluted EPS calculation (in thousands):

Contingently issuable shares under Restricted Stock Awards were excluded from the denominator in the three months ended June 30, 2019 and in the three months and six months ended June 30, 2018 as such securities were anti-dilutive during the periods. Shares issuable under all outstanding stock options were excluded from the denominator in the three months ended June 30, 2019 and 2018 as such securities were anti-dilutive during the periods. Also not included in the computations of diluted EPS were the unvested LTIP Units and unvested AO LTIP Units as such securities were anti-dilutive during all periods presented. Unvested LTIP Units outstanding