Preferred Stock	12 Months Ended
Dec. 31, 2017
Preferred Stock
Preferred Stock	8. Preferred Stock On January 3, 2011, the Company entered into an agreement to issue up to 9,000,000 shares of Series A Convertible Preferred Stock ("Series A Stock") in consideration for the grant of a license to certain intellectual property (see Note 13). The issuance of shares was subject to the satisfaction of certain conditions set forth in the Series A Convertible Preferred Stock Purchase Agreement. From 2011 through 2016, the Company issued the 9,000,000 shares of Series A Stock in four tranches, upon the consummation of the corresponding Series B Convertible Redeemable Preferred Stock ("Series B Stock") tranche closings. During the period from January 3, 2011 through December 31, 2013, the Company sold 15,000,000 shares of Series B Stock for gross proceeds of $15,000. In accordance with the terms of the Series A Convertible Preferred Stock Purchase Agreement, the Company issued 6,279,300 shares of Series A Stock to the licensor in connection with these closings valued at approximately $6,279 on the dates of grant, which was recognized as research and development expense. On April 17, 2015, the Company completed an additional tranche closing of the sale of its Series B Stock and issued the remaining 6,500,000 authorized shares of Series B Stock. Of the shares issued, 4,532,098 were issued in consideration for the conversion of notes payable and accrued interest totaling approximately $4,532 (see Note 6), and the remaining 1,967,902 shares were sold for gross proceeds of approximately $1,968. In accordance with the terms of the Series A Convertible Preferred Stock Purchase Agreement, the Company issued 2,720,700 shares of Series A Stock to the licensor contemporaneously with the Series B Stock tranche closing. These shares were valued at approximately $2,721 on the date of grant and included in research and development expense. On April 24, August 25, and December 19, 2014, GITR completed three tranche closings resulting in the issuance of 2,687,765 shares of Series C Stock for net proceeds of $1,807. On February 5 and April 24, 2015, GITR completed two tranche closings resulting in the issuance of 2,835,040 shares of Series C Stock for net proceeds of approximately $1,922. The powers, terms, conditions, preferences, rights and privileges of the Series A Stock, Series B Stock and Series C Stock when outstanding were as set forth below. In connection with the consummation of the Macrocure merger, all outstanding shares of the Company's convertible preferred stock were converted into shares of common stock. Voting The holders of Series A Stock, Series B Stock and the Series C Stock are entitled to vote, together with the holders of common stock as one class, on all matters as to which common stockholders are entitled to vote. In any such vote, each share of such preferred stock shall entitle the holder thereof to the number of votes per share that equals the number of shares of common stock into which each such share of such preferred stock is then convertible. In addition, the holders of a majority in voting power of the Series C Stock and Series B Stock, voting together as a separate class, have the exclusive right to elect three members of the Board of Directors of the Company. Preferences The Company's Series C Stock and Series B Stock ranks, as to dividends and upon liquidation, equally with each other and senior and prior to the Company's Series A Stock and common stock and to all other classes or series of stock issued by the Company, and the Series A Stock ranks, as to dividends and upon liquidation, junior to the Series C Stock, Series B Stock and senior and prior to the Company's common stock, in each instance, except as otherwise approved by the affirmative vote or consent of the holders of a majority of the voting power of the shares of Series C Stock and Series B Stock then outstanding, voting together as a separate class. Dividends Whenever any dividend is declared or paid on the Series B Stock or Series C Stock, the Board of Directors shall also declare and pay a dividend on the same terms, at the same rate and in like kind upon each share of the Series A Stock then outstanding, so that all outstanding shares of Series A Stock, Series B Stock and Series C Stock will participate equally with each other ratably per share. The holders of shares of Series B Stock are entitled to receive, if, when and as declared or paid by the Board of Directors on any shares of Series B Stock, dividends at the rate of 8% of the applicable Original Purchase Price per share per year, which will accrue on a quarterly basis commencing on the original issuance date applicable to each share of Series B Stock equal in right to the payment of dividends and other distributions on the Series C Stock and prior in right to the payment of dividends and other such distributions on any other class of securities of the Company. Dividends are payable, as accrued, whether or not declared, (i) on any liquidation, (ii) upon any event of sale, (iii) upon any redemption date, or (iv) upon the conversion of the Series B Stock into common stock, on such shares so converted. Whenever any dividend is declared or paid on: (i) any shares of the common stock, the Board of Directors shall also declare and pay a dividend on the same terms, at the same rate and in like kind upon each share of the Series B Stock then outstanding so that all outstanding shares of Series B Stock will participate in such dividend ratably with such shares of common stock; or (ii) any shares of Series A Stock or Series C Stock, the Board of Directors shall also declare and pay a dividend on the Series B Stock on the same terms, at the same or equivalent rate, based on the number of shares of common stock into which the Series A Stock or Series C Stock, as applicable, is then convertible, if applicable, or, otherwise, the relative liquidation preference per share, as compared with the Series B Stock then outstanding. The holders of shares of Series C Stock shall be entitled to receive, if, when and as declared or paid by the Board of Directors on any shares of Series C Stock, dividends at the rate of 8% of the applicable Original Purchase Price per share per annum, which will accrue on a quarterly basis commencing on the original issuance date applicable to each share of Series C Stock equal in right to the payment of dividends and other distributions on the Series B Stock and prior in right to the payment of dividends and other such distributions on any other class of securities of the Company. Dividends are payable, as accrued, whether or not declared, (i) on any liquidation, (ii) upon any event of sale, (iii) upon any redemption date, or (iv) upon the conversion of the Series C Stock into common stock, on such shares so converted. Whenever any dividend is declared or paid on: (i) any shares of the common stock, the Board of Directors shall also declare and pay a dividend on the same terms, at the same rate and in like kind upon each share of the Series C Stock then outstanding so that all outstanding shares of Series C Stock will participate in such dividend ratably with such shares of common stock; or (ii) any shares of Series A Stock or Series B Stock, the Board of Directors shall also declare and pay a dividend on the Series C Stock on the same terms, at the same or equivalent rate, based on the number of shares of common stock into which the Series A Stock or Series B Stock, as applicable, is then convertible, if applicable, or, otherwise, the relative liquidation preference per share, as compared with the Series C Stock then outstanding. Cumulative unpaid dividends on the Series A, Series B and Series C Stock totaled approximately $2,800, $6,689 and $2,383, respectively, as of December 31, 2016 and have been accreted in the carrying amounts of the Series A, Series B and Series C Stock, respectively, in the accompanying consolidated balance sheet as of that date. Liquidation Rights In the event of any liquidation, dissolution or winding-up of the affairs of the Company (collectively, a "Liquidation"), (i) the holders of shares of Series C Stock and Series B Stock shall be entitled to receive out of the assets of the Company, before any payment shall be made to the holders of Series A Stock then outstanding, the holders of common stock or any other class or series of stock ranking on Liquidation junior to such Series C Stock and Series B Stock, an amount per share equal to the Original Purchase Price applicable thereto, plus an amount equal to any accrued but unpaid dividends thereon; and (ii) after the distribution to the holders of Series C and Series B Stock of the full amount which they are entitled to receive, the holders of Series A Stock shall be entitled to receive out of the assets of the Company, before any payment shall be made to the holders of common stock or any other class or series of stock ranking on Liquidation junior to such Series A Stock, an amount per share equal to the applicable Original Purchase Price plus an amount equal to any declared but unpaid dividends thereon. In the event of any Liquidation, after payments shall have been made first to the holders of Series C and Series B Stock and the holders of Series A Stock of the full amount to which they shall be entitled, the holders of common stock as a class, shall be entitled to share ratably with the holders of Series A, B and C Stock in all remaining assets of the Company legally available for distribution to its stockholders. For purposes of calculating the amount of any payment to be paid upon any such Liquidation, each share of Series A Stock, Series B Stock and Series C Stock shall be deemed to be that number of shares of common stock into which it is then convertible. Redemption At the request of the holder or holders of not less than 662/3% of the voting power of shares of Series C Stock and Series B Stock then outstanding, voting together as a separate class, made at any time after December 10, 2020, the Company shall redeem, at a redemption price per share equal to the Original Purchase Price of the Series C Stock or Series B Stock, as applicable, plus an amount equal to any accrued but unpaid dividends thereon, up to 25% of the Series C Stock or Series B Stock, as applicable, owned of record by the requesting holders at the time that such request is made, and in each subsequent year thereafter, upon the anniversary of the redemption date, up to 25% of the shares of Series C Stock or Series B Stock, as applicable, that were owned of record by the requesting holders on the redemption date plus up to that number of shares of Series C Stock or Series B Stock, as applicable, that the requesting holders could have required the Company to have redeemed in the year or years following the redemption date, but elected not to have redeemed. In the event of and simultaneously with the closing of an event of sale, as defined, the Company shall redeem all of the shares of Series A Stock, Series B Stock and Series C Stock then outstanding for a cash amount per share defined as the Special Liquidation Price. In the event the event of sale involves consideration that does not consist of cash, then the Special Liquidation Price may be paid with such consideration having a value equal to the Special Liquidation Price. To the extent there is any cash consideration in connection with an event of sale, the cash consideration will first be applied to satisfy the Special Liquidation Price prior to the payment thereof to any stockholders of the Company. The Special Liquidation Price would be equal to that amount per share which would be received by each Series A, Series B and Series C stockholder if, in connection with an event of sale, all the consideration paid in exchange for the assets or the shares of capital stock of the Company were actually paid to and received by the Company and the Company was immediately thereafter liquidated and its assets distributed. Conversion Any holder of Series A Stock, Series B Stock or Series C Stock has the right to convert any or all of its shares into fully paid and nonassessable shares of common stock. For each share of preferred stock so converted, the rate of conversion would equal the quotient of the applicable Original Purchase Price for such preferred stock divided by the Conversion Price for such preferred stock, subject to adjustment. The Original Purchase Price and Conversion Price of the Series A Stock, Series B Stock and Series C Stock was $1.00, $1.00 and $2.39 per share, respectively, during all periods presented. If the Company issues or sells any shares of common stock, preferred stock or options for a consideration per share less than the applicable Conversion Price in effect immediately prior to the issuance (a "Dilutive Issuance"), the Conversion Price for the preferred stock in effect immediately prior to each such Dilutive Issuance shall automatically be lowered to a price determined by a formula defined in the Company's articles of incorporation. If the number of shares of common stock outstanding is increased or decreased by a stock dividend payable in shares of common stock, by a combination of the outstanding shares of common stock or by a subdivision or split-up of shares of common stock, then the Conversion Price applicable to each series of preferred stock shall be appropriately increased or decreased so that the number of shares of common stock issuable on conversion of each share of preferred stock shall be increased in proportion to such increase or decrease in outstanding shares of common stock. Approval Rights The Company may not, without the affirmative approval of the holders of shares representing at least a majority of voting power of the Series B Stock and Series C Stock then outstanding, complete certain transactions, including among others, selling the Company, acquiring another entity, declaring or paying dividends, or incurring any indebtedness in excess of $500. Merger with Macrocure Ltd. On January 20, 2017, prior and subject to the consummation of the merger with Macrocure, all outstanding shares of the Company's convertible preferred stock were converted into 3,174,523 shares of common stock.

8. Preferred Stock

On January 3, 2011, the Company entered into an agreement to issue up to 9,000,000 shares of Series A Convertible Preferred Stock ("Series A Stock") in consideration for the grant of a license to certain intellectual property (see Note 13). The issuance of shares was subject to the satisfaction of certain conditions set forth in the Series A Convertible Preferred Stock Purchase Agreement. From 2011 through 2016, the Company issued the 9,000,000 shares of Series A Stock in four tranches, upon the consummation of the corresponding Series B Convertible Redeemable Preferred Stock ("Series B Stock") tranche closings.

During the period from January 3, 2011 through December 31, 2013, the Company sold 15,000,000 shares of Series B Stock for gross proceeds of $15,000. In accordance with the terms of the Series A Convertible Preferred Stock Purchase Agreement, the Company issued 6,279,300 shares of Series A Stock to the licensor in connection with these closings valued at approximately $6,279 on the dates of grant, which was recognized as research and development expense.

On April 17, 2015, the Company completed an additional tranche closing of the sale of its Series B Stock and issued the remaining 6,500,000 authorized shares of Series B Stock. Of the shares issued, 4,532,098 were issued in consideration for the conversion of notes payable and accrued interest totaling approximately $4,532 (see Note 6), and the remaining 1,967,902 shares were sold for gross proceeds of approximately $1,968. In accordance with the terms of the Series A Convertible Preferred Stock Purchase Agreement, the Company issued 2,720,700 shares of Series A Stock to the licensor contemporaneously with the Series B Stock tranche closing. These shares were valued at approximately $2,721 on the date of grant and included in research and development expense.

On April 24, August 25, and December 19, 2014, GITR completed three tranche closings resulting in the issuance of 2,687,765 shares of Series C Stock for net proceeds of $1,807. On February 5 and April 24, 2015, GITR completed two tranche closings resulting in the issuance of 2,835,040 shares of Series C Stock for net proceeds of approximately $1,922.

The powers, terms, conditions, preferences, rights and privileges of the Series A Stock, Series B Stock and Series C Stock when outstanding were as set forth below. In connection with the consummation of the Macrocure merger, all outstanding shares of the Company's convertible preferred stock were converted into shares of common stock.

Voting

The holders of Series A Stock, Series B Stock and the Series C Stock are entitled to vote, together with the holders of common stock as one class, on all matters as to which common stockholders are entitled to vote. In any such vote, each share of such preferred stock shall entitle the holder thereof to the number of votes per share that equals the number of shares of common stock into which each such share of such preferred stock is then convertible. In addition, the holders of a majority in voting power of the Series C Stock and Series B Stock, voting together as a separate class, have the exclusive right to elect three members of the Board of Directors of the Company.

Preferences

The Company's Series C Stock and Series B Stock ranks, as to dividends and upon liquidation, equally with each other and senior and prior to the Company's Series A Stock and common stock and to all other classes or series of stock issued by the Company, and the Series A Stock ranks, as to dividends and upon liquidation, junior to the Series C Stock, Series B Stock and senior and prior to the Company's common stock, in each instance, except as otherwise approved by the affirmative vote or consent of the holders of a majority of the voting power of the shares of Series C Stock and Series B Stock then outstanding, voting together as a separate class.

Dividends

Whenever any dividend is declared or paid on the Series B Stock or Series C Stock, the Board of Directors shall also declare and pay a dividend on the same terms, at the same rate and in like kind upon each share of the Series A Stock then outstanding, so that all outstanding shares of Series A Stock, Series B Stock and Series C Stock will participate equally with each other ratably per share.

The holders of shares of Series B Stock are entitled to receive, if, when and as declared or paid by the Board of Directors on any shares of Series B Stock, dividends at the rate of 8% of the applicable Original Purchase Price per share per year, which will accrue on a quarterly basis commencing on the original issuance date applicable to each share of Series B Stock equal in right to the payment of dividends and other distributions on the Series C Stock and prior in right to the payment of dividends and other such distributions on any other class of securities of the Company. Dividends are payable, as accrued, whether or not declared, (i) on any liquidation, (ii) upon any event of sale, (iii) upon any redemption date, or (iv) upon the conversion of the Series B Stock into common stock, on such shares so converted. Whenever any dividend is declared or paid on: (i) any shares of the common stock, the Board of Directors shall also declare and pay a dividend on the same terms, at the same rate and in like kind upon each share of the Series B Stock then outstanding so that all outstanding shares of Series B Stock will participate in such dividend ratably with such shares of common stock; or (ii) any shares of Series A Stock or Series C Stock, the Board of Directors shall also declare and pay a dividend on the Series B Stock on the same terms, at the same or equivalent rate, based on the number of shares of common stock into which the Series A Stock or Series C Stock, as applicable, is then convertible, if applicable, or, otherwise, the relative liquidation preference per share, as compared with the Series B Stock then outstanding.

The holders of shares of Series C Stock shall be entitled to receive, if, when and as declared or paid by the Board of Directors on any shares of Series C Stock, dividends at the rate of 8% of the applicable Original Purchase Price per share per annum, which will accrue on a quarterly basis commencing on the original issuance date applicable to each share of Series C Stock equal in right to the payment of dividends and other distributions on the Series B Stock and prior in right to the payment of dividends and other such distributions on any other class of securities of the Company. Dividends are payable, as accrued, whether or not declared, (i) on any liquidation, (ii) upon any event of sale, (iii) upon any redemption date, or (iv) upon the conversion of the Series C Stock into common stock, on such shares so converted. Whenever any dividend is declared or paid on: (i) any shares of the common stock, the Board of Directors shall also declare and pay a dividend on the same terms, at the same rate and in like kind upon each share of the Series C Stock then outstanding so that all outstanding shares of Series C Stock will participate in such dividend ratably with such shares of common stock; or (ii) any shares of Series A Stock or Series B Stock, the Board of Directors shall also declare and pay a dividend on the Series C Stock on the same terms, at the same or equivalent rate, based on the number of shares of common stock into which the Series A Stock or Series B Stock, as applicable, is then convertible, if applicable, or, otherwise, the relative liquidation preference per share, as compared with the Series C Stock then outstanding.

Cumulative unpaid dividends on the Series A, Series B and Series C Stock totaled approximately $2,800, $6,689 and $2,383, respectively, as of December 31, 2016 and have been accreted in the carrying amounts of the Series A, Series B and Series C Stock, respectively, in the accompanying consolidated balance sheet as of that date.

Liquidation Rights

In the event of any liquidation, dissolution or winding-up of the affairs of the Company (collectively, a "Liquidation"), (i) the holders of shares of Series C Stock and Series B Stock shall be entitled to receive out of the assets of the Company, before any payment shall be made to the holders of Series A Stock then outstanding, the holders of common stock or any other class or series of stock ranking on Liquidation junior to such Series C Stock and Series B Stock, an amount per share equal to the Original Purchase Price applicable thereto, plus an amount equal to any accrued but unpaid dividends thereon; and (ii) after the distribution to the holders of Series C and Series B Stock of the full amount which they are entitled to receive, the holders of Series A Stock shall be entitled to receive out of the assets of the Company, before any payment shall be made to the holders of common stock or any other class or series of stock ranking on Liquidation junior to such Series A Stock, an amount per share equal to the applicable Original Purchase Price plus an amount equal to any declared but unpaid dividends thereon.

In the event of any Liquidation, after payments shall have been made first to the holders of Series C and Series B Stock and the holders of Series A Stock of the full amount to which they shall be entitled, the holders of common stock as a class, shall be entitled to share ratably with the holders of Series A, B and C Stock in all remaining assets of the Company legally available for distribution to its stockholders. For purposes of calculating the amount of any payment to be paid upon any such Liquidation, each share of Series A Stock, Series B Stock and Series C Stock shall be deemed to be that number of shares of common stock into which it is then convertible.

Redemption

At the request of the holder or holders of not less than 662/3% of the voting power of shares of Series C Stock and Series B Stock then outstanding, voting together as a separate class, made at any time after December 10, 2020, the Company shall redeem, at a redemption price per share equal to the Original Purchase Price of the Series C Stock or Series B Stock, as applicable, plus an amount equal to any accrued but unpaid dividends thereon, up to 25% of the Series C Stock or Series B Stock, as applicable, owned of record by the requesting holders at the time that such request is made, and in each subsequent year thereafter, upon the anniversary of the redemption date, up to 25% of the shares of Series C Stock or Series B Stock, as applicable, that were owned of record by the requesting holders on the redemption date plus up to that number of shares of Series C Stock or Series B Stock, as applicable, that the requesting holders could have required the Company to have redeemed in the year or years following the redemption date, but elected not to have redeemed.

In the event of and simultaneously with the closing of an event of sale, as defined, the Company shall redeem all of the shares of Series A Stock, Series B Stock and Series C Stock then outstanding for a cash amount per share defined as the Special Liquidation Price. In the event the event of sale involves consideration that does not consist of cash, then the Special Liquidation Price may be paid with such consideration having a value equal to the Special Liquidation Price. To the extent there is any cash consideration in connection with an event of sale, the cash consideration will first be applied to satisfy the Special Liquidation Price prior to the payment thereof to any stockholders of the Company. The Special Liquidation Price would be equal to that amount per share which would be received by each Series A, Series B and Series C stockholder if, in connection with an event of sale, all the consideration paid in exchange for the assets or the shares of capital stock of the Company were actually paid to and received by the Company and the Company was immediately thereafter liquidated and its assets distributed.

Conversion

Any holder of Series A Stock, Series B Stock or Series C Stock has the right to convert any or all of its shares into fully paid and nonassessable shares of common stock. For each share of preferred stock so converted, the rate of conversion would equal the quotient of the applicable Original Purchase Price for such preferred stock divided by the Conversion Price for such preferred stock, subject to adjustment. The Original Purchase Price and Conversion Price of the Series A Stock, Series B Stock and Series C Stock was $1.00, $1.00 and $2.39 per share, respectively, during all periods presented.

If the Company issues or sells any shares of common stock, preferred stock or options for a consideration per share less than the applicable Conversion Price in effect immediately prior to the issuance (a "Dilutive Issuance"), the Conversion Price for the preferred stock in effect immediately prior to each such Dilutive Issuance shall automatically be lowered to a price determined by a formula defined in the Company's articles of incorporation. If the number of shares of common stock outstanding is increased or decreased by a stock dividend payable in shares of common stock, by a combination of the outstanding shares of common stock or by a subdivision or split-up of shares of common stock, then the Conversion Price applicable to each series of preferred stock shall be appropriately increased or decreased so that the number of shares of common stock issuable on conversion of each share of preferred stock shall be increased in proportion to such increase or decrease in outstanding shares of common stock.

Approval Rights

The Company may not, without the affirmative approval of the holders of shares representing at least a majority of voting power of the Series B Stock and Series C Stock then outstanding, complete certain transactions, including among others, selling the Company, acquiring another entity, declaring or paying dividends, or incurring any indebtedness in excess of $500.

Merger with Macrocure Ltd.

On January 20, 2017, prior and subject to the consummation of the merger with Macrocure, all outstanding shares of the Company's convertible preferred stock were converted into 3,174,523 shares of common stock.