Defense to Future Claims. Employee agrees that in the event that any claim, suit or action shall be commenced by her against the Company arising out of any charge, claim or cause of action of any nature whatsoever, known or unknown, including, but not limited to, claims, suits or actions relating to her employment with Patterson or any prior agreement with Patterson, through this date, this Agreement shall constitute a complete defense to any such claims, suits or actions so instituted.

Executive’s termination of employment shall mean a “separation from service” within the meaning of Code Section 409A. Notwithstanding anything herein to the contrary, this Agreement shall, to the maximum extent possible, be administered, interpreted and construed in a manner consistent with Code Section 409A; provided, that in no event shall the Company have any obligation to indemnify the Executive from the effect of any taxes under Code Section 409A.

Notice; Defense of Claims. Each party to this Agreement shall give prompt written notice to the other party or parties to this Agreement under each claim for indemnification hereunder specifying the amount and nature of the claim, and of any matter which is likely to give rise to an indemnification claim. Each party to this Agreement has the right to participate at its own expense in the defense of any such matter or its settlement, or the indemnifying party may take over the defense of such matter so long as such defense is reasonably expeditious, and in the event the indemnifying party is defending such matter, the indemnified party shall not consent to the entry of judgment or enter into any settlement by which such indemnifying party is to be bound and which settlement does not include as an unconditional term the giving by the indemnified party and the claimant or plaintiff to such indemnifying party of a release from all liability in respect to such claim or litigation. Failure to give timely notice of a matter which may give rise to an indemnification claim shall not affect the rights of the indemnified party to collect such claims from the indemnifying party except to the extent such failure to so notify

an Indemnitee failure to give prompt written notice of such a Third Party claim, suit, action and/or proceeding to Spero causes the loss of a defense that otherwise would have been available in connection with such Third Party claim, suit, action and/or proceeding. Spero shall control the defense of any such Third Party claims, suits, actions and/or proceedings.

Party Claim must be delivered by the Indemnifying Party to the Indemnified Party within thirty (30) Business Days after receipt of the Indemnified Party’s Claims Notice, and failure on the part of the Indemnifying Party to deliver such notice within such thirty (30) Business Day period shall be deemed an election not to assume the defense of such Third Party Claim. If the Indemnifying Party elects to assume the defense of a Third Party Claim, then the Indemnified Party shall reasonably cooperate with the Indemnifying Party in the defense of any such Third Party Claim.

Third Party Consents. Copies of all third-party consents that are required by any contract.

Third Party Beneficiaries. Except as specifically provided in this Services Agreement, this Services Agreement is solely for the benefit of the Parties and their respective Affiliates after the Effective Time and their permitted successors and assigns, and is not intended to confer upon any Person except the Parties and their respective Affiliates after the Effective Time, and their permitted successors and assigns, any rights or remedies hereunder; and there are no other third-party beneficiaries of this Services Agreement and this Services Agreement should not be deemed to confer upon Third Parties any remedy, claim, liability, reimbursement, cause of action or other right in excess of those existing without reference to this Services Agreement.

Third Party Beneficiaries. This Agreement will be binding upon, inure to the benefit of and be enforceable by each of the Holders and their respective successors and assigns, including subsequent holders of Registrable Securities acquired, directly or indirectly, from the Holders in compliance with any restrictions on transfer or assignment. The Company shall be given written notice at the time of or within a reasonable time after such transfer or assignment, stating the name and address of the transferee or assignee and identifying the securities with respect to which such registration rights are being transferred or assigned, and such transferee or assignee of such rights shall assume in writing such Holder’s obligations hereunder and shall thereafter be deemed to be a “Holder” hereunder. This Agreement (including the Purchase Agreement and such other documents and instruments referred to in this Agreement) is not intended to and does not confer upon any person other than the Holders from time to time any rights or remedies under this Agreement.

Third‑Party Beneficiaries. This Agreement does not create, and shall not be construed as creating, any rights enforceable by any person not a party to this Agreement.

Third Party Information. I understand that Company has received and in the future will receive from third parties confidential or proprietary information (“Third Party Information”) subject to a duty to maintain the confidentiality of such information and to use it only for certain limited purposes. During the term of my employment and thereafter, I will hold Third Party Information in the strictest confidence and will not disclose to any person, firm or corporation (other than Company personnel who need to know such information in connection with their work for Company) or use it except as necessary in carrying out my work for Company consistent with Company’s agreement with such third party or unless expressly authorized by an officer of Company in writing.