Document:

Exhibit 10.4

 

THE 381 CONNECTICUT AVENUE CORPORATION

C/O BAYWATER PROPERTIES

1019 BOSTON POST ROAD

DARIEN, CT 06820

 

April 3, 2012

 

Mr. Ray Soto

Chairman and Chief Executive Officer

Bolt Technology Corporation

4 Duke Place

Norwalk, CT 06854

 

Dear Ray:

 

This letter serves to confirm that we accept your request to
renew the leases dated January 10, 2003 between Bolt Technology Corporation and The 381 Connecticut Avenue Corporation. The aforementioned
leases expire on January 9, 2013.

 

For 366 Ely Avenue, the Net Rent (as defined in Sections 3 and
23 of the Lease) will be $18,900.00 per month throughout the 5-year renewal term commencing on January 10, 2013. All other terms
of this lease shall remain in full force and effect and unmodified.

 

For 4 Duke Place, the Net Rent (as defined in Sections 3 and
23 of the Lease) will be $11,000.00 per month throughout the 5-year renewal term commencing on January 10, 2013. All other terms
of this lease shall remain in full force and effect and unmodified.

 

Upon your acceptance of this proposal, both leases will expire
on January 9, 2018. Should you wish to discuss with us an additional renewal option for these properties, we would be pleased to
meet with you to explore this possibility. It has been our pleasure working you and your team.

 

In connection with the early renewal of the aforementioned leases,
we will reimburse you for the cost of creating the work room proposed in 366 Ely Avenue by J. Ackley Building & Remodeling,
LLC, to a maximum of $11,650.00. We will reimburse you for this expense within 5 days of your submitting to us an invoice for this
work, upon its completion. We will also be responsible for the cost of renovating the bathrooms in 366 Ely Avenue, and the installation
of 2 additional gas-fired heating units in that building. This work will be initiated and supervised by us and will be completed
no later than July 1, 2012.

 

    	 

    	 

    

 

Kindly countersign this letter and return to us one copy to
confirm your acceptance of this proposal (and retain one copy for your records). If you have any questions with this agreement,
please do not hesitate to contact me.

 

	Sincerely,
	 	 
	/s/ R. David Genovese	 
	R. David Genovese	 
	President, The 381 Connecticut Avenue Corporation
	 
	Accepted and Agreed:
	 
	BOLT TECHNOLOGY CORPORATION
	 	 
	/s/ Raymond Soto	 
	By: Raymond Soto	 
	Its: Chairman and Chief Executive Officer
	Date: April 17, 2012
	 
	cc
	Joseph Espeso, Bolt Technology Corporation
	Barbara Young, Levett RockwoodExhibit 10.6

 

BOLT TECHNOLOGY CORPORATION

 

AMENDMENT TO RESTRICTED STOCK AWARD
AGREEMENTS

 

THIS AMENDMENT TO RESTRICTED STOCK AWARD
AGREEMENTS (this “Amendment”) is entered into as of September 10, 2012 (the “Effective Date”),
by and between Bolt Technology Corporation, a Connecticut corporation (the “Company”), and Raymond M. Soto (the
“Participant”).

 

WHEREAS, the Company and the Participant
are party to the following Restricted Stock Award Agreements: (i) Restricted Stock Award Agreement with respect to the 15,000 shares
of Common Stock awarded on January 23, 2008; (ii) Restricted Stock Award Agreement with respect to the 10,000 shares of Common
Stock awarded on August 26, 2008; (iii) Restricted Stock Award Agreement with respect to the 20,000 shares of Common Stock awarded
on August 26, 2009; (iv) Restricted Stock Award Agreement with respect to the 10,000 shares of Common Stock awarded on August 5,
2010; (v) Restricted Stock Award Agreement with respect to the 20,000 shares of Common Stock awarded on August 18, 2011; and (vi)
Restricted Stock Award Agreement with respect to the 12,500 shares of Common Stock awarded on August 21, 2012 (together, the “Restricted
Stock Award Agreements”); and

 

WHEREAS, the Company and the Participant
desire to amend each of the Restricted Stock Award Agreements to provide for certain changes, including, without limitation, that
the forfeiture restrictions shall automatically lapse (i) if the Participant’s service with the Company is terminated due
to the Participant’s retirement at or after age 65, death or Disability and (ii) immediately prior to the consummation of
a Change of Control.

 

NOW, THEREFORE, the Company and the Participant
agree as follows:

 

1.          Capitalized
terms used but not otherwise defined in this Amendment shall have the meanings set forth in the Restricted Stock Award Agreements.

 

2.          Section
3(c) of each of the Restricted Stock Award Agreements is amended and restated in its entirety to read:

 

“(c)          Termination
of Continuous Service. Notwithstanding any other provision of this Agreement to the contrary, if the Participant’s Continuous
Service with the Company or any Subsidiary terminates for any reason (or no reason) other than as set forth in the proviso to this
Section 3(c), any shares of Restricted Stock that are subject to the Period of Restriction on the date of the Participant’s
termination shall be immediately forfeited by the Participant and shall be automatically transferred to and reacquired by the Company
at no cost to the Company, and neither the Participant nor his or her heirs, executors, administrators or successors shall have
any right or interest in such Restricted Stock; provided, however, that if the Participant holds Restricted Stock at the time the
Participant’s Continuous Service with the Company terminates due to the Participant’s retirement at or after age 65
(“Retirement”), death or Disability (as defined in the Plan), the Period of Restriction with respect to such Restricted
Stock shall automatically lapse on the date of the Participant’s Retirement, death or Disability.”

 

    	 

    	 

    

 

3.          Section
6 of each of the Restricted Stock Award Agreements is amended and restated in its entirety to read:

 

“6.          Change
of Control. Notwithstanding Section 3 of this Agreement, if the Participant holds Restricted Stock at the time a Change of
Control (as defined in the Plan) occurs, the Period of Restriction with respect to such Restricted Stock shall automatically lapse
immediately prior to the consummation of such Change of Control.”

 

4.          Section
12 of each of the Restricted Stock Award Agreements is amended by adding the phrase “if applicable,” after the word
“Code,” and before the word “even.”

 

5.          All
of the terms and conditions of the Restricted Stock Award Agreements shall remain in full force and effect, except as amended as
set forth in this Amendment.

 

IN WITNESS WHEREOF, the undersigned have
executed this Amendment as of the date first written above.

 

	 	BOLT TECHNOLOGY CORPORATION
	 	 	 
	 	By:	/s/ Joseph Espeso
	 	 	Name: Joseph Espeso
	 	 	Title:   Chief Financial Officer
	 	 	 
	 	PARTICIPANT:
	 	 
	 	/s/ Raymond M. Soto
	 	Raymond M. Soto

 

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BOLT TECHNOLOGY CORPORATION

 

RESTRICTED STOCK AWARD AGREEMENT

 

THIS RESTRICTED STOCK AWARD AGREEMENT (this
“Agreement”) is entered into as of _______________ (the “Effective Date”), by and between
Bolt Technology Corporation, a Connecticut corporation (the “Company”), and Raymond M. Soto (the “Participant”).

 

WHEREAS, the Participant is an employee
of the Company or one of its subsidiaries or a director of the Company and in connection therewith has rendered services for and
on behalf of the Company and/or its subsidiaries; and

 

WHEREAS, in recognition of the prior contributions
made by the Participant and to provide the Participant with an additional incentive to use maximum efforts for the future success
of the Company and its subsidiaries, the Company desires to grant to the Participant, and the Participant desires to accept from
the Company, an award of the common stock, without par value, of the Company (the “Common Stock”) pursuant to
the Bolt Technology Corporation Amended and Restated 2006 Stock Option and Restricted Stock Plan (as it may be further amended
from time to time, the “Plan”), subject to certain restrictions for the benefit of the Company, and upon such
other terms and conditions, set forth in this Agreement.

 

NOW, THEREFORE, the Company and the Participant
agree as follows:

 

1.          Restricted
Stock Award. The Company hereby offers to issue to the Participant ______ shares of Common Stock (the “Shares”)
subject to the restrictions and on the terms and conditions set forth in this Agreement (the “Award”). Unless
this offer is earlier revoked in writing by the Company, the Participant shall have ten (10) days from the date of the delivery
of this Agreement to the Participant to accept the offer of the Company by executing and delivering to the Company two copies of
this Agreement, without condition or reservation of any kind whatsoever, and pay the full purchase price, if any, for said Shares
to the Company in the manner set forth in this Agreement.

 

2.          Purchase
Price. The purchase price to purchase the Shares is _____ ($_____).

 

3.          Restriction
on the Shares.

 

(a)        Period
of Restriction. Except as otherwise set forth herein, all the Shares issued to the Participant pursuant to this Agreement shall
be subject to a period of restriction (the “Period of Restriction”) during which the Participant’s rights
in and to such Shares shall be subject to the limitations and obligations set forth in this Section 3.

 

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(b)          Lapse
of Period of Restriction. The Period of Restriction shall lapse as to a percentage of the Shares in accordance with the schedule
set forth below based upon the period of time of the Participant’s Continuous Service (as defined in the Plan) with the Company
or any Subsidiary (as defined in the Plan), calculated from the Effective Date:

 

	Period of Continuous Service
 (calculated from the Effective
 Date)	 	Incremental Percentage of
 Shares Not Subject to
 Restriction	 	 	Cumulative Percentage of
 Shares Not Subject to
 Restriction	 
	12 months	 	 	20	%	 	 	20	%
	24 months	 	 	20	%	 	 	40	%
	36 months	 	 	20	%	 	 	60	%
	48 months	 	 	20	%	 	 	80	%
	60 months	 	 	20	%	 	 	100	%

 

During the period that the Shares are subject to the Period
of Restriction, such Shares are referred to herein as “Restricted Stock.”

 

(c)          Termination
of Continuous Service. Notwithstanding any other provision of this Agreement to the contrary, if the Participant’s Continuous
Service with the Company or any Subsidiary terminates for any reason (or no reason) other than as set forth in the proviso to this
Section 3(c), any shares of Restricted Stock that are subject to the Period of Restriction on the date of the Participant’s
termination shall be immediately forfeited by the Participant and shall be automatically transferred to and reacquired by the Company
at no cost to the Company, and neither the Participant nor his or her heirs, executors, administrators or successors shall have
any right or interest in such Restricted Stock; provided, however, that if the Participant holds Restricted Stock at the time the
Participant’s Continuous Service with the Company terminates due to the Participant’s retirement at or after age 65
(“Retirement”), death or Disability (as defined in the Plan), the Period of Restriction with respect to such
Restricted Stock shall automatically lapse on the date of the Participant’s Retirement, death or Disability.

 

(d)          Escrow.
Upon the Participant’s execution and delivery of this Agreement, the Participant agrees to concurrently deliver one or more
executed stock powers as requested by the Company, duly endorsed in blank for transfer, in the form attached hereto as Exhibit A,
which shall be deposited with the Company during the Period of Restriction. Each certificate representing shares of Restricted
Stock shall bear the following legend until the lapse of the Period of Restriction with respect to the shares represented by such
certificate:

 

Transfer of this certificate and the shares represented
hereby is restricted pursuant to the terms of the Bolt Technology Corporation Amended and Restated 2006 Stock Option and Restricted
Stock Plan (the “Plan”) and the Restricted Stock Award Agreement, dated as of _______________, between Bolt Technology
Corporation and Raymond M. Soto (the “Agreement”). Copies of the Plan and the Agreement are on file at the offices
of Bolt Technology Corporation.

 

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The certificates representing the Restricted Stock along with
the stock power(s) shall be held in escrow by the Company until such time as either (i) the Period of Restriction with respect
to all of such shares of Restricted Stock lapses in accordance with Section 3(b) or the proviso in Section 3(c) of this Agreement,
in which case the shares shall be delivered to the Participant, or (ii) any such shares of Restricted Stock are forfeited pursuant
to Section 3(c) of this Agreement, in which case such shares shall be transferred to and reacquired by the Company in accordance
with said Section 3(c).

 

(e)          Distributions.
All cash distributions on the Restricted Stock shall be paid directly to the Participant and shall not be held in escrow. Any new,
substituted or additional securities or other property issued in respect of Restricted Stock shall be held in escrow, together,
where applicable, with appropriate stock powers, assignments or other transfer documents which the Participant hereby agrees to
execute as a condition to receipt of such securities or other property. If the Restricted Stock in respect of which such securities
or other property was issued is forfeited to the Company pursuant to Section 3(c) of this Agreement, then such securities or other
property shall be immediately forfeited to the Company and automatically transferred to and reacquired by the Company at no cost
to the Company, to the same extent and in accordance with Section 3(c) of this Agreement as if such securities or other property
were Restricted Stock thereunder.

 

4.          Participant’s
Acknowledgement. The Participant acknowledges and agrees that: (x) unless the Shares are covered by a then current registration
statement or a notification under Regulation A under the Securities Act of 1933, as amended (the “Securities Act”),
(i) the Shares are being purchased for investment and not for distribution or resale (other than a distribution or resale which,
in the opinion of counsel satisfactory to the Company, may be made without violating the registration provisions of the Securities
Act); (ii) the Participant has been advised and understands that (A) the Shares have not been registered under the Securities Act
and are “restricted securities” within the meaning of Rule 144 under the Securities Act and are subject to restrictions
on transfer, and (B) the Company is under no obligation to register the Shares under the Securities Act or to take any action which
would make available to the Participant any exemption from such registration; (iii) such Shares may not be transferred without
compliance with all applicable federal and state securities laws and any other restrictions contained in the Plan and this Agreement;
and (iv) an appropriate legend referring to the foregoing restrictions on transfer and any other applicable restrictions under
this Agreement may be endorsed on the certificates; (y) notwithstanding the foregoing, if the Company determines that issuance
of Shares should be delayed pending (1) registration under federal or state securities laws, (2) the receipt of an opinion of counsel
satisfactory to the Company that an appropriate exemption from such registration is available, (3) the listing or inclusion of
the Shares on any securities exchange or an automated quotation system, or (4) the consent or approval of any governmental regulatory
body whose consent or approval is necessary in connection with the issuance of such Shares, the Company may defer issuance of any
Shares granted hereunder until any of the events described in this sentence has occurred; and (z) if at any time the Committee
shall determine that an additional agreement of the Participant is necessary or desirable as a condition of, or in connection with,
the delivery or purchase of the Shares hereunder, then the Award shall not be effective unless such agreement shall have been obtained
free of any conditions not acceptable to the Committee.

 

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5.          Rights
as a Stockholder. Upon the Participant’s execution and delivery of this Agreement and payment of the full purchase price
for the Shares and until such time as the Restricted Stock is forfeited to the Company as set forth herein, the Participant shall
be the record owner of the Restricted Stock and, subject to the terms of this Agreement and the Plan, shall have all rights of
a stockholder with respect to the Restricted Stock, including the right to vote the shares of Restricted Stock and, subject to
the terms of Section 3 hereof, to receive dividends and distributions with respect to the Restricted Stock.

 

6.          Change
of Control. Notwithstanding Section 3 of this Agreement, if the Participant holds Restricted Stock at the time a Change of
Control (as defined in the Plan) occurs, the Period of Restriction with respect to such Restricted Stock shall automatically lapse
immediately prior to the consummation of such Change of Control.

 

7.          Withholding.
All deliveries and distributions under this Agreement shall be subject to withholding of all applicable taxes. The Participant
agrees to make appropriate arrangements with the Company for satisfaction of any applicable federal, state or local income tax,
withholding requirements or like requirements, including the payment to the Company upon the lapse of the Period of Restriction
with respect to shares of Restricted Stock (or such later date as may be applicable under Section 83 of the Internal Revenue
Code of 1986, as amended (the “Code”)), or other settlement in respect of, the Restricted Stock of all such taxes and
requirements. The Participant agrees that the Company shall be authorized to take such action as the Company may deem necessary
(including, without limitation, in accordance with applicable law, withholding amounts from any compensation or other amount owing
from the Company to the Participant) to satisfy all obligations for the payment of such taxes.

 

8.          Restrictions
on Transfer. The Participant shall not sell, transfer, pledge, hypothecate, assign, exchange or otherwise dispose of the Restricted
Stock. Any attempted sale, transfer, pledge, hypothecation, assignment, exchange or other disposition shall be null and void and
of no force or effect and the Company shall have the right to disregard the same on its books and records and to issue “stop
transfer” instructions to its transfer agent.

 

9.          Plan
Provisions Control. This Agreement is subject to the terms and conditions of the Plan, which are incorporated herein by reference.
Notwithstanding anything to the contrary contained herein, the provisions of the Plan shall govern if and to the extent there are
inconsistencies between the provisions of the Plan and the provisions of this Agreement. The Participant acknowledges that the
Participant has received a copy of the Plan prior to the execution of this Agreement.

 

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10.         No
Rights Conferred. Nothing in this Agreement shall give the Participant any right to continue in the employ or service of the
Company or any Subsidiary and/or as a member of the Company’s Board of Directors or in any other capacity, or interfere in
any way with the right of the Company or any Subsidiary to terminate the employment or services of the Participant.

 

11.         Adjustments.
All references to the number and class of shares covered by this Agreement, the purchase price per share of the Shares, and other
terms in this Agreement may be appropriately adjusted, in the discretion of the Committee, in the event of certain changes in capitalization,
as set forth in Section 9 of the Plan.

 

12.         Compliance
with Section 409A of the Code. The Participant hereby consents (without further consideration) to
any change to this Agreement or the Award so the Participant can avoid paying penalties under Section 409A of the Code, if
applicable, even if those changes affect the terms and conditions of this Agreement or the Award and
reduce its value or potential value.

 

13.         Binding
Effect. This Agreement shall be binding upon and shall inure to the benefit of the parties hereto and their respective heirs,
executors, administrators, successors and permitted assigns. This Agreement may not be assigned or transferred in whole or in part
by the Participant, nor may the Participant delegate any duty or obligation under this Agreement, and any attempt to so assign,
transfer or delegate shall be null and void and of no force or effect.

 

14.         Interpretation
of this Agreement. All determinations and interpretations made by the Committee with regard to any questions arising under
the Plan or this Agreement shall be final, binding and conclusive as to all persons, including without limitation the Participant
and any person claiming rights from or through the Participant.

 

15.         Venue.
Each party to this Agreement hereby irrevocably (i) consents and submits to the exclusive jurisdiction of the state and federal
courts in Fairfield County, Connecticut in connection with any disputes arising out of this Agreement,
and (ii) waives any objection based on venue or inconvenient forum with respect to any action instituted therein arising under
this Agreement or the transactions contemplated hereby, and agrees that any dispute with respect to such matters shall be heard
only in the courts described above.

 

16.         Governing
Law; Entire Agreement; Amendment. This Agreement shall be governed by and construed in accordance with the laws of the State
of Connecticut, without regard to such state’s conflict of laws principles. The Plan and this Agreement constitute the entire
agreement between the parties with respect to the subject matter hereof and supersede all prior understandings and agreements,
written or oral, of the parties hereto with respect to the subject matter hereof. This Agreement may be amended by the Committee,
subject to the Participant’s consent if such amendment is not favorable to the Participant, except that the consent of the
Participant shall not be required for any amendment made pursuant to Section 7B(j), Section 8 or Section 9 of the Plan, or
as set forth in Section 12 of this Agreement.

 

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17.         Tax
Elections. THE PARTICIPANT UNDERSTANDS THAT HE OR SHE (AND NOT THE COMPANY) SHALL BE RESPONSIBLE FOR THE PARTICIPANT’S
OWN TAX LIABILITY THAT MAY ARISE AS A RESULT OF THE ACQUISITION OF THE SHARES HEREUNDER. THE PARTICIPANT ACKNOWLEDGES AND AGREES
THAT HE OR SHE HAS CONSIDERED THE ADVISABILITY OF ALL TAX ELECTIONS IN CONNECTION WITH THE ISSUANCE OF THE SHARES, INCLUDING THE
MAKING OF AN ELECTION UNDER SECTION 83(b) OF THE CODE. THE PARTICIPANT FURTHER ACKNOWLEDGES AND AGREES THAT, IF THE PARTICIPANT
DETERMINES TO MAKE AN ELECTION UNDER SECTION 83(b) OF THE CODE, (i) THE PARTICIPANT (AND NOT THE COMPANY) IS SOLELY RESPONSIBLE
FOR PROPERLY AND TIMELY COMPLETING AND FILING ANY SUCH SECTION 83(b) ELECTION, AND (ii) THE PARTICIPANT AGREES TO TIMELY PROVIDE
A COPY OF THE ELECTION TO THE COMPANY AS REQUIRED UNDER THE CODE.

 

18.         Notices.
Any notice, demand or request required or permitted to be given under this Agreement shall be in writing and shall be deemed given
(i) when delivered personally, or (ii) three days after being deposited in the United States mail, by certified or registered mail,
postage prepaid, or (iii) the next business day after sent by nationally recognized overnight delivery service, and addressed,
if to the Company, at its principal place of business, Attention: Chief Financial Officer, and if to the Participant, at his or
her most recent address as shown in the employment or stock records of the Company.

 

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IN WITNESS WHEREOF, the undersigned have
executed this Agreement as of the date first written above.

 

	 	BOLT TECHNOLOGY CORPORATION
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	PARTICIPANT
	 	 
	 	 
	 	Raymond M. Soto

 

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Exhibit A

 

STOCK POWER

 

For value received, I hereby sell, assign and transfer unto
_______________________________ shares of the Common Stock of Bolt Technology Corporation standing in my name on the books of
said Company represented by Certificate(s) Number(s) _________________ herewith, and do hereby irrevocably constitute and appoint
____________________ attorney to transfer the said stock on the books of said Company with full power of substitution in the premises.

 

Date:______________________________________

 

Printed Name:_______________________________

 

Social Security Number:_______________________

 

Signature:___________________________________

 

Witness Signature:____________________________

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