Exhibit 10.1



 Exhibit 10.1 

EMPLOYMENT AGREEMENT 

AGREEMENT (the “Agreement”), effective as of November 1, 2015 (the “Commencement Date”), by and between UNITIL
CORPORATION, a New Hampshire corporation (the “Company”), and ROBERT G. SCHOENBERGER (the “Executive”). 
 The Company
desires to continue to employ the Executive, and the Executive is willing to continue to be employed by the Company, on the terms and conditions of this Agreement. 

Accordingly, in consideration of the premises and the respective covenants and agreements of the parties herein contained, and intending to be
legally bound hereby, the parties hereto agree as follows: 
 1. Employment. The Company hereby agrees to continue to employ the
Executive, and the Executive hereby agrees to continue to be employed by the Company, on the terms and conditions set forth herein. 
 2.
Term. The employment of the Executive under this Agreement shall commence on the Commencement Date and shall end at the close of business on October 31, 2018 (the “Term”). 

3. Title, Duties and Authority. The Executive shall continue to serve as Chairman of the Board of Directors (the “Board”) and
as a member of the Board, and as Chief Executive Officer and President of the Company, and shall have such responsibilities and duties for the Company and its subsidiaries consistent with the Executive’s positions as Chairman, Board member,
Chief Executive Officer and President. The Executive shall have all of the powers and duties usually incident to the offices of Chairman, Chief Executive Officer and President. The Executive shall devote substantially all of his working time and
efforts to the business and affairs of the Company. 
 4. Compensation and Benefits. 

(a) Base Salary. During the Term, the Company shall pay the Executive a base salary (“Base Salary”), payable in accordance
with the Company’s normal practice for paying base salaries to its executive employees. The Base Salary shall initially be payable at the rate of $614,168 per annum, and shall be subject to annual review by the Board for discretionary periodic
increases in accordance with the Company’s compensation policies. 
 (b) Bonus. The Executive shall participate in the
Company’s Management Incentive Plan at the target rate of 60%, which shall be subject to annual review by the Compensation Committee of the Board for discretionary increases in accordance with the Company’s compensation policies. 

(c) Employee Benefits. The Executive shall be entitled to participate in the Company’s Supplemental Executive Retirement Program
(the “SERP”), and all other employee benefit plans made available by the Company (or any affiliate thereof) to all of its executives during the Term as may be in effect from time to time. Upon the Executive’s retirement, the Company
will (A) remit on the Executive’s behalf all applicable Medicare taxes due and payable on the then present value of the SERP benefits (such present value shall be determined by the Company’s actuary) and (B) remit on the
Executive’s behalf any Federal, State, city, local or payroll taxes payable upon the payment provided pursuant to this Section 4(c). 

  
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 (d) Stock Plans. The Executive shall be entitled to participate in any stock option,
restricted stock, phantom stock or similar plan of the Company or any subsidiary as and to the extent provided by the Board from time to time. 

(e) Expenses. During the Term, the Executive shall be entitled to receive prompt reimbursement upon submission of expense claims to
the Company for all reasonable and customary expenses incurred by the Executive in performing services hereunder, in accordance with the terms and conditions of the Company’s expense reimbursement policy. The Executive shall be entitled to use
of a Company-owned automobile for both business and personal use in accordance with the Company’s automobile policies. The Executive shall be reimbursed for annual membership in a local club. 

(f) Vacations. The Executive shall be entitled to paid vacation in accordance with the Company’s vacation policy, subject to a
minimum of four (4) weeks of paid vacation per year. The Executive shall also be entitled to all paid holidays and sick days given by the Company to its executives. 

(g) Taxes. Except for Medicare taxes payable on the present value of SERP benefits described in Section 4(c) above, the Company
may withhold from any amounts payable under this Agreement such federal, state, local and/or other taxes as shall be required to be withheld pursuant to any applicable law or regulation. 

(h) Board Fees. The Executive shall promptly remit to the Company any compensation received by the Executive (including, without
limitation, any fees, equity securities or retirement benefits) for service on the board of directors or similar governing body of any entity in which the Company owns at least five percent of the voting equity securities, unless the Board
authorizes the Executive to retain some or all of any such compensation. Notwithstanding the foregoing, the Executive shall be entitled to retain any reimbursements paid to him by any such entity of the actual out-of-pocket expenses incurred by the
Executive in attending any meeting of any such board or other governing body. Nothing in this Section 4(h) shall be deemed to authorize the Executive to serve on the board of directors or similar governing body of any other entity if doing so
would cause the Executive to be in breach of his obligations under any other provision of this Agreement. 
 (i) Change in Control.
The Company and the Executive have entered into a Severance Agreement (“Severance Agreement”) dated June 30, 2008, providing for certain compensation and benefits during and after employment (including severance benefits) if a change
in control of the Company occurs. This Agreement shall not affect the Executive’s rights or obligation under the Severance Agreement and, as long as the Severance Agreement is not in effect, the Severance Agreement shall not affect this
Agreement or the Executive’s rights or obligations under this Agreement. As provided in the Severance Agreement, if the Severance Agreement becomes effective due to a change in control, the Severance Agreement shall supersede this Agreement.

 5. Termination. The Company, by action of the Board, may terminate the Executive’s employment hereunder for any reason. 

(a) If the Executive’s employment is terminated by the Company during the Term for any reason other than for Cause (as defined below),
death, or Disability (as defined below), or if the 

  
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Executive terminates his employment hereunder for Good Reason (as defined below), except as otherwise provided in Section 10 hereof, the Company shall pay to the Executive, as soon as
practicable (but in no event more than fifteen (15) days) after the date of termination of employment: 
 (i) all accrued and unpaid
salary, bonus and expense reimbursements; 
 (ii) a lump sum cash payment equal to the present value of twenty-four (24) monthly
salary payments, assuming for this purpose that (A) each monthly salary payment would have been equal to 1/12th of the Executive’s Base Salary in effect at the time of his employment
termination (disregarding any reductions in Base Salary that were not approved by the Executive) and (B) such monthly salary payments would have been made on each of the 24 monthly anniversaries of the date the Executive’s employment
terminated; 
 (iii) a lump sum cash payment equal to the present value of two (2) annual bonus payments, assuming for this purpose
that (A) each such annual bonus payment would have been equal to the average of the annual bonus amounts received by the Executive in the two calendar years preceding the year in which the employment termination occurs and (B) the first
annual bonus would have been paid on the last business day of the first February following the date of employment termination and the second annual bonus would have been paid on the last business day of the second February following the date of
employment termination; and 
 (iv) a lump sum cash amount equal to the sum of (A) the present value of the monthly cost that would
have been incurred by the Company (exclusive of the Executive’s portion thereof and determined in good faith by the Company) if it provided group medical, dental and life insurance coverage to the Executive and the Executive’s eligible
dependents (at the same level and Executive cost as in effect at the time of employment termination) for a period of two (2) consecutive years following employment termination, determined based on the cost of such coverage at the time of
employment termination and assuming such cost remained constant through the coverage period, and (B) an additional payment (the “Additional Payment”) in an amount such that, after payment by the Executive of all Federal, State, city
and local income taxes and the Executive’s portion of all payroll taxes imposed upon the Additional Payment, the Executive retains an amount of the Additional Payment equal to the Federal, State, city and local income taxes and the
Executive’s portion of all payroll taxes imposed upon the payment provided pursuant to subpart (A) of this Section 5(a)(iv). For a period of two (2) consecutive years following employment termination, the Executive and the
Executive’s eligible dependents shall remain eligible to participate in the Company’s group medical, dental and life insurance plan, in each case, that is generally available to other senior executives of the Company; provided, that the
Executive shall pay one-hundred (100%) percent of the cost of such coverage. The continued coverage provided under this Section 5(a)(iv) shall not count against the Executive’s and the Executive’s dependent’s continuation of
coverage period required under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (or any similar state or local law). 
 For purposes
of calculating the lump sum cash payments provided by this Section 5, present value shall be determined by using a discount factor equal to one percentage point below the Prime Rate, compounded annually. The “Prime Rate” shall be the
base rate on corporate loans at large U.S. money center commercial banks as reported in The Wall Street Journal (or, if such rate is no longer published, such other base rate on corporate loans by large money center commercial banks in the
United States to their most creditworthy customers as published by any newspaper or periodical of general circulation) as of the date on which termination shall have occurred. 

  
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 (b) If the Executive terminates his employment hereunder for any reason other than for Good
Reason, if the Executive’s employment hereunder is terminated due to the Executive’s death, or if the Company terminates the Executive’s employment as a result of Disability or Cause, the Company shall have no further obligation
hereunder and no further payments (except for accrued and unpaid salary, bonus and expense reimbursement) shall be made to the Executive. 

(c) Disability. For purposes of this Agreement, “Disability” shall mean the Executive’s incapacity due to physical or
mental illness which, if he were to apply, would in the sole determination of the Board entitle him to the receipt of benefits under the Company’s long-term disability plan and if the Executive shall not have returned to the performance of his
duties hereunder on a full-time basis within thirty (30) days after a written Notice of Termination (as defined in Section 6(a)) is given to the Executive by the Company. 

(d) Cause. For the purposes of this Agreement, “Cause” shall mean: 

(i) the failure by the Executive to substantially perform the Executive’s duties hereunder (other than any such failure resulting from
the Executive’s incapacity due to physical or mental illness which shall be subject to the provisions of Section 5(c)); 
 (ii)
the willful violation by the Executive of any of the Executive’s material obligations hereunder; 
 (iii) the willful engaging by the
Executive in misconduct which is materially injurious to the business or reputation of the Company or any of its affiliates; or 
 (iv) the
Executive’s conviction of a felony. 
 Notwithstanding the foregoing, the Executive shall not be terminated for Cause without: 

(A) reasonable notice to the Executive setting forth the reasons for the Company’s intention to terminate the Executive’s
employment hereunder for Cause; 
 (B) the failure of the Executive to cure the nonperformance, violation or misconduct described in the
notice referred to in clause (A) of this paragraph, if the cure thereof is possible, to the reasonable satisfaction of the Board, within fifteen (15) days of such notice; 

(C) an opportunity for the Executive, together with the Executive’s counsel, to be heard before the Board; and 

(D) delivery to the Executive of a written Notice of Termination (as defined in Section 6(a)) from the Company notifying him that in the
good faith opinion of a majority of the Board the Company is entitled to terminate the Executive for Cause as set forth above, and specifying the particulars thereof in detail. 

(e) Good Reason. For the purposes of this Agreement, “Good Reason” shall mean the occurrence of any of the following events
or conditions unless the Executive specifically agrees in writing that such event or condition shall not constitute Good Reason: 
 (i) a
material diminution in the Executive’s authority, duties or responsibilities or the Company requiring the Executive to report to a corporate officer or employee rather than reporting directly to the Board; 

  
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 (ii) a material change in the geographic location at which the Executive must perform services,
which the Company has determined to include a change in the Executive’s principal place of employment by the Company from the location of the Company’s principal place of business on the date of this Agreement to a location more than fifty
(50) miles from such principal place of business; 
 (iii) a material diminution in the Executive’s base compensation; or 

(iv) any other action or inaction that constitutes a material breach by the Company of the Agreement. 

6. Termination Procedure. 

(a) Notice of Termination. Any termination of the Executive’s employment by the Company or by the Executive shall be communicated
by a written Notice of Termination to the other party hereto in accordance with Section 8. For purposes of this Agreement, a “Notice of Termination” shall mean a notice which shall indicate the specific termination provision in this
Agreement relied upon and the Date of Termination, and shall set forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of the Executive’s employment hereunder pursuant to the provision so indicated.

 (b) Date of Termination. “Date of Termination” shall mean: 

(i) if the Executive’s employment is terminated on account of the Executive’s Disability, thirty (30) days after a Notice of
Termination has been provided pursuant thereto (provided that the Executive shall not have returned to the performance of the Executive’s duties on a full-time basis during such thirty (30) day period); 

(ii) if the Executive’s employment is terminated for Cause, the date specified in the Notice of Termination provided pursuant thereto;
and 
 (iii) if the Executive’s employment is terminated for any other reason, the date on which a Notice of Termination is provided
or any later date (within thirty (30) days) set forth in such Notice of Termination. 
 (c) Termination for Good Reason.
Notwithstanding anything herein to the contrary, no event or condition described in Section 5(e) shall constitute “Good Reason” unless (i) the Executive gives the Company notice of the termination for Good Reason within ninety
(90) days of the initial existence of the event or condition constituting Good Reason and (ii) the Executive gives the Company thirty (30) days’ prior written notice of such termination due to Good Reason and the Company fails to
cure such event or condition within the thirty (30) day period. 
 7. Restrictions. 

(a) Reasonable Covenants. It is expressly understood by and between the Company and the Executive that the covenants contained in this
Section 7 are an essential element of this Agreement and that but for the agreement by the Executive to comply with these covenants and thereby 

  
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not to diminish the value of the organization and goodwill of the Company or any affiliate of the Company, if any, including, without limitation relations with their employees, suppliers,
customers and accounts, the Company would not enter into this Agreement. The Executive acknowledges that he has been given the opportunity to independently consult with his legal counsel and agrees that such covenants are reasonable and proper. 

(b) Noncompetition; No Diversion of Customers, Etc. During the Term and for twelve (12) months after the later of (i) the
Executive’s Date of Termination, or (ii) the last day a payment is made to the Executive pursuant to Section 5, the Executive shall not: 

(i) engage directly, alone or in association with or as a shareholder, principal, agent, partner, officer, director, employee or consultant
of any other organization or entity, in competition with the Company and/or any of its affiliates; 
 (ii) divert to any competitor of the
Company or any of its affiliates, any customer of the Company or any of its affiliates; or 
 (iii) solicit or encourage any officer,
employee or consultant of the Company or any of its affiliates to leave the employ of the Company or any of its affiliates for employment by or with any competitor of the Company or any of its affiliates; 

provided, however, that the Executive may invest in stocks, bonds or other securities of any competitor of the Company or any of its affiliates
if: 
 (A) such stocks, bonds or other securities are listed on any national or regional securities exchange or have been registered under
Section 11(g) of the Securities Exchange Act of 1934; 
 (B) the Executive’s investment does not exceed, in the case of any class
of the capital stock of any one issuer, one percent (1%) of the issued and outstanding shares, or, in the case of other securities, one percent (1%) of the aggregate principal amount thereof issued and outstanding; and 

(C) such investment would not prevent, directly or indirectly, the transaction of business by the Company and/or any of its affiliates with
any state, district, territory or possession of the United States or any governmental subdivision, agency or instrumentality thereof by virtue of any statute, law, regulation or administrative practice. 

If, at any time, the provision of this Section 7(b) shall be determined to be invalid or unenforceable by reason of being vague or
unreasonable as to the area, duration or scope of activity, this Section 7(b) shall be considered severable and shall become and shall be immediately amended solely with respect to such area, duration and scope of activity as shall be
determined to be reasonable and enforceable by the court or other body having jurisdiction over the matter and the Executive agrees that this Section 7(b) as so amended shall be valid and binding as though any invalid or unenforceable provision
had not been included herein. Except as provided in this Section 7 and in Section 3, nothing in this Agreement shall prevent or restrict the Executive from engaging in any business or industry in any capacity. 

(c) Public Support and Assistance. The Executive agrees that following any termination of his employment hereunder by the Company, the
Executive shall not disclose or cause to be 

  
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disclosed any negative, adverse or derogatory comments or information of a substantial nature about the Company or its management, or about any product or service provided by the Company, or
about the Company’s prospects for the future (including any such comments or information with respect to affiliates of the Company). The Company and/or any of its affiliates may seek the assistance, cooperation or testimony of the Executive
following any such termination in connection with any investigation, litigation or proceeding arising out of matters within the knowledge of the Executive and related to the Executive’s position as an officer or employee of the Company, and in
any such instance, the Executive shall provide such assistance, cooperation or testimony and the Company shall pay the Executive’s reasonable costs and expenses in connection therewith; in addition, if such assistance, cooperation or testimony
requires more than a nominal commitment of the Executive’s time, the Company shall compensate the Executive for such time at a per diem rate derived from the Executive’s Base Salary at the time of the Executive’s Date of Termination.

 (d) Nondisclosure of Confidential Information. During the Term, the Executive shall hold in a fiduciary capacity for the benefit
of the Company and its affiliates all Confidential Information (as defined below). After termination of the Executive’s employment with the Company, the Executive shall keep secret and confidential all Confidential Information and shall not use
or disclose to any third party in any fashion or for any purpose whatsoever, any Confidential Information. As used herein, “Confidential Information” shall mean any information regarding this Agreement, or any other information regarding
the Company or its affiliates which is not available to the general public, and/or not generally known outside the Company or any such affiliate, to which the Executive has or shall have had access at any time during the course of the
Executive’s employment with the Company, including, without limitation, any information relating to the Company’s (and its affiliates’): 

(i) business, operations, plans, strategies, prospects or objectives; 

(ii) products, technologies, processes, specifications, research and development operations or plans; 

(iii) customers and customer lists; 

(iv) sales, service, support and marketing practices and operations; 

(v) financial condition and results of operations; 

(vi) operational strengths and weaknesses; and 

(vii) personnel and compensation policies and procedures. 

Notwithstanding the foregoing provisions of this Section 7, the Executive may discuss this Agreement with the members of the Executive’s immediate
family and with the Executive’s personal legal advisors. 
 (e) Specific Performance. Without intending to limit the remedies
available to the Company, the Executive agrees that damages at law would be an insufficient remedy to the Company in the event that the Executive violates any of the provisions of this Section 7, and that the Company may apply for and, upon the
requisite showing, have injunctive relief in any court of competent jurisdiction to restrain the breach or threatened breach of or otherwise to specifically enforce any of the covenants contained in this Section 7. 

  
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 (f) Reporting Possible Violations of Federal Law or Regulation; Disclosures Protected Under
Whistleblower Provisions. Notwithstanding anything to the contrary contained in this Agreement, (i) nothing in this Agreement shall prohibit the Executive from reporting possible violations of federal law or regulation to any governmental
agency or entity, including but not limited to the Department of Justice, the Securities and Exchange Commission, the Congress, and any agency Inspector General, or making other disclosures that are protected under the whistleblower provisions of
federal law or regulation, (ii) the Executive does not need the prior authorization of the Company to make any such reports or disclosures and (iii) the Executive is not required to notify the Company that the Executive has made any such
reports or disclosures. 
 (g) Survival of Provisions. This Section 7 shall survive after the termination of this Agreement.

 8. Notice. For the purpose of this Agreement, notices, demands and all other communications provided for herein shall be in
writing and shall be deemed to have been duly given when delivered or (unless otherwise specified) mailed by United States certified or registered mail, return receipt requested, postage prepaid, addressed as follows: 

If to the Executive: 
 Robert G.
Schoenberger 
 3 Sea Road 

North Hampton, NH 03862 
 If to
the Company: 
 Unitil Corporation 

6 Liberty Lane West 
 Hampton, NH
03842 
 or to such other address as any party may have furnished to the other in writing in accordance herewith, except that notices of change of address
shall be effective only upon receipt. 
 9. Successors. Without the prior written consent of the Executive, this Agreement cannot be
assigned by the Company except that it shall be binding automatically on any successors and assigns of all or substantially all of the business and/or assets of the Company (whether direct or indirect, by purchase, merger, consolidation or
otherwise). In addition, without the prior written consent of the Company, this Agreement cannot be assigned by the Executive, except that the right to receive payments or benefits hereunder may be transferred by will or the laws of descent and
distribution. This Agreement and all rights of the Executive hereunder shall inure to the benefit of and be enforceable by the Executive’s personal or legal representatives. 

10. Code Section 409A. The provisions of this Agreement and all payments made pursuant to this Agreement are intended to comply
with, and should be interpreted so that they are consistent with, the requirements of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), and any related regulations or other applicable guidance promulgated
thereunder (collectively, “Section 409A”). It is the intent of the parties hereto that all severance payments and benefits provided pursuant to this Agreement qualify as short-term deferrals, as defined in Treasury Regulation
§1.409A-1(b)(4), separation pay due to an involuntary separation from service under Treasury Regulation §1.409A-1(b)(9)(iii), and/or limited payments, as defined in Treasury Regulation §1.409A-1(b)(9)(v)(D)).


  
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Notwithstanding the foregoing, if (i) it is determined that any payments or benefits provided pursuant to this Agreement upon a separation from service (as that term is used in
Section 409A) constitute deferred compensation for purposes of Section 409A (after taking into account the exception for short-term deferrals set forth in Treasury Regulation §1.409A-1(b)(4), the exception for separation pay due to an
involuntary separation set forth in Treasury Regulation §1.409A-1(b)(9)(iii), the exception for limited payments as set forth in Treasury Regulation §1.409A-1(b)(9)(v)(D) and/or any other applicable exception from Section 409A) and
(ii) the Executive is a “specified employee,” as determined under the Company’s policy for determining specified employees, on the date on which the termination of employment occurs, no such payments or benefits shall be provided
prior to the first business day after the date that is six months following the Executive’s termination of employment or, if the Executive dies during such six month period, on the first business day after the date of the Executive’s
death. The first payment that can be made shall include the cumulative amount of any amounts that could not be paid during such six-month period. In addition, interest will accrue at the Federal short-term rate determined under Section 1274(d)
of the Code (as in effect on the date of the separation from service or, if such date is not a business day, the first business day prior to such date) on all payments not paid to the Executive prior to the first business day after the sixth month
anniversary of termination of employment that otherwise would have been paid during such six-month period had this delay provision not applied to the Executive and shall be paid with the first payment after such six-month period. For all purposes
under this Agreement, references to termination of employment, employment termination or words of similar import shall be interpreted to mean “separation from service,” as that term is used in Section 409A, and the Executive’s
employment shall in no event be deemed to have terminated unless and until a separation from service shall have occurred for purposes of Section 409A. 

11. Arbitration. Except as provided in Section 7(e), all controversies, claims or disputes arising out of or relating to this
Agreement shall be settled by binding arbitration to be conducted in Hampton, New Hampshire under the rules of the American Arbitration Association, as the sole and exclusive remedy of either party, and judgment upon any such award rendered by the
arbitrator(s) may be entered in any court of competent jurisdiction. The costs of arbitration shall be borne by the unsuccessful party or otherwise as determined by the arbitrators in their discretion. 

12. Governing Law: The validity, interpretation, construction and performance of this Agreement shall be governed by the laws of the
State of New Hampshire without regard to conflicts of law principles. 
 13. Amendments. No provision of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is agreed to in writing signed by the Executive and such officer of the Company as may be specifically designated for such purpose by the Board. No waiver by either party
hereto at any time of any breach by the other party hereto of, or compliance with, any condition or provision of this Agreement to be performed by such other party shall be deemed a waiver of similar or dissimilar provisions or conditions at the
same or at any prior or subsequent time. 
 14. Counterparts. This Agreement may be executed in one or more counterparts, each of
which shall be deemed to be an original but all of which together shall constitute one and the same instrument. 
 15. Entire
Agreement. Except as otherwise provided in Section 4(i) hereof, this Agreement sets forth the entire agreement of the parties hereto in respect of the subject matter contained herein and supersedes all prior agreements, promises, covenants,
arrangements, communications, representations or warranties, whether oral or written, by any officer, employee or representative of any party hereto. No agreements or representations, oral or otherwise, express or implied, with respect to the


  
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subject matter hereof have been made by either party which are not set forth expressly in this Agreement. For avoidance of doubt, while this Agreement is in effect, the Executive shall not be
eligible to receive severance payments under the Unitil Corporation Severance Pay Plan, as may be amended from time to time, or any successor or similar plan maintained by the Company or an affiliate. 

16. Severability. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability
of any other provision hereof. 
 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date and year first above written.

  

					
	UNITIL CORPORATION
		
	By:	 	 /s/ Eben S. Moulton

		 	Name:	 	Eben S. Moulton
		 	Title:	 	Chairman, Compensation Committee of the Board of Directors
	
	ROBERT G. SCHOENBERGER
	
	 /s/ Robert G. Schoenberger




  
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