Purchaser Status. At the time such Purchaser was offered the Securities, it was, and as of the date hereof it is, and on each date on which it exercises any Warrants, it will be either: # an “accredited investor” as defined in Rule 501(a)(1), (a)(2), (a)(3), (a)(7) or (a)(8) under the Securities Act or # a “qualified institutional buyer” as defined in Rule 144A(a) under the Securities Act.

Purchaser Deliverables. At the Closing and as a condition to Closing, Purchaser shall deliver the following:

Purchaser Representations. In connection with the issuance and acquisition of Shares under this Agreement, the Purchaser hereby represents and warrants to the Company as follows:

Material Breach. Subject to [Section 3.2.3], either Party may terminate this Agreement for cause at any time during the Term by giving written notice to the other Party in the event that such other Party commits a material breach of its obligations under this Agreement and such material breach remains uncured for ninety (90) days from the date of such notice; provided, however, that if any breach is not reasonably curable within ninety (90) days and if the breaching Party is making a bona fide effort to cure such breach, such termination shall be delayed for a time period to be agreed by both Parties in order to permit the breaching Party a reasonable period of time to cure such breach.

CytomX Breach. Regeneron will have the right to terminate this Agreement in the event of any material breach by CytomX of any terms and conditions of this Agreement ​; provided, however, that Regeneron has ​; provided further, however, that such termination will not be effective if such breach has been cured within ​ days after written notice thereof is given by Regeneron to CytomX specifying the nature of the alleged breach; provided further, however, if such breach is not reasonably subject to cure within ​ days after receipt of written notice thereof, then CytomX shall continue to use good faith efforts to cure such breach and shall have provided to Regeneron a written plan intended to cure (and that CytomX reasonably believes will cure) such breach as soon as reasonably practicable thereafter. Notwithstanding the foregoing in this [Section 13.3.1], in the event of a good faith dispute as to whether a material breach by CytomX has occurred, the foregoing cure period with respect thereto will be tolled pending final resolution of such dispute in accordance with the terms of this Agreement; provided, however, if such dispute relates to payment, such tolling of the cure period will only apply with respect to payment of the disputed amounts, and not with respect to any undisputed amount.

Material Breach. Unum has the right to terminate this Agreement upon written notice to SGI if SGI materially breaches its obligations under this Agreement and, after receiving written notice from Unum identifying such material breach by SGI in reasonable detail, fails to cure such material breach within ninety (90) days from the date of such notice (or within ​ days from the date of such notice in the event such material breach is solely based upon SGI’s failure to pay any amounts due Unum hereunder). SGI has the right to terminate this Agreement upon written notice to Unum if Unum materially breaches its obligations under this Agreement and, after receiving written notice from SGI identifying such material breach by Unum in reasonable detail, fails to cure such material breach within ​ days from the date of such notice (or within ​ days from the date of such notice in the event such material breach is solely based upon Unum’s failure to pay any amounts due SGI hereunder).

Disputed Breach. If the alleged breaching Party disputes in good faith the existence or materiality of a breach specified in a notice provided by the other Party in accordance with Section 16.3(a)(i), and such alleged breaching Party provides the other Party notice of such dispute within such ​ day or ​ day period, as applicable, then the non-breaching Party will not have the right to terminate this Agreement under Section 16.3(a)(i) unless and until an arbitrator, in accordance with Article 17, has determined that the alleged breaching Party has materially breached this Agreement and that such Party fails to cure such breach within ​ days following such arbitrator’s decision (except to the extent such breach involves the failure to make a payment when due, which breach must be cured within ​ days following such arbitrator’s decision). The arbitrator’s decision will include a description of what is required to cure such breach. It is understood and agreed that during the pendency of such dispute, all of the terms and conditions of this Agreement will remain in effect.

Deliveries by Purchaser. At the Closing, Purchaser will deliver to HoldCos:

Purchaser hereby agrees to indemnify and defend the Seller and its officers, directors, stockholders, employees, agents, representatives, affiliates, successors and assigns (“Indemnified Parties”) and

Resales Under Rule [[Unknown Identifier]]. It will take reasonable steps to inform persons acquiring Securities from the Initial Purchasers in the United States that the Securities # have not been and will not be registered under the Securities Act, # are being sold to them without registration under the Securities Act in reliance on Rule [[Unknown Identifier]] and # may not be offered, sold or otherwise transferred except # to the Company, # outside the United States in accordance with Regulation S or # inside the United States in accordance with # Rule [[Unknown Identifier]] to a person whom the seller reasonably believes is a QIB that is purchasing such Securities for its own account or for the account of a QIB to whom notice is given that the offer, sale or transfer is being made in reliance on Rule [[Unknown Identifier]] or # pursuant to another available exemption from registration under the Securities Act.