Exhibit 4.2


 


FLIR Systems, Inc.


 


and 


 


U.S. Bank National Association, 


 


as Trustee 


 


FIRST SUPPLEMENTAL INDENTURE 


 


Dated as of August 3, 2020 


 


to the Indenture dated as of August 3,
2020 


 


2.500% Notes due 2030


 






    	 	 	 



     


    







 


TABLE OF CONTENTS 


 




	Article 1 APPLICATION OF FIRST SUPPLEMENTAL INDENTURE	1
	 	 
	Section 1.01.   Application of First Supplemental Indenture	1
	 	 
	Article 2 DEFINITIONS	2
	 	 
	Section 2.01.   Certain Terms Defined in the Indenture	2
	 	 
	Section 2.02.   Definitions	2
	 	 
	Article 3 FORM AND TERMS OF THE NOTES	5
	 	 
	Section 3.01.   Form and Dating	5
	 	 
	Section 3.02.   Terms of the Notes	6
	 	 
	Section 3.03.   Optional Redemption	6
	 	 
	Section 3.04.   Repurchase of Notes upon a Change of Control	7
	 	 
	Article 4 CERTAIN COVENANTS	8
	 	 
	Section 4.01.   Restrictions on Secured Debt	8
	 	 
	Section 4.02.   Restrictions on Sale and Leaseback Transactions	10
	 	 
	Section 4.03.   Guarantees	10
	 	 
	Article 5 EVENTS OF DEFAULT	10
	 	 
	Section 5.01.   Events of Default	10
	 	 
	Section 5.02.   Acceleration of Maturity; Recession	11
	 	 
	Article 6 CONSOLIDATION, MERGERS, SALE OF ASSETS	11
	 	 
	Section 6.01.   Consolidation, Merger and Sale of Assets	11
	 	 
	Article 7 GUARANTEE	12
	 	 
	Section 7.01.   Guarantee	12
	 	 
	Section 7.02.   Limitation on Guarantor Liability	13
	 	 
	Section 7.03.   Execution and Delivery of Guarantee	13
	 	 
	Section 7.04.   Guarantors May Consolidate, etc., on Certain Terms	13
	 	 
	Section 7.05.   Release of a Subsidiary Guarantor	14



 






    	 	 	 



     


    

 











	Article 8 AMENDMENT AND WAIVER	14
	 	 
	Section 8.01.   With Consent of Holders	14
	 	 
	Article 9 DEFEASANCE	15
	 	 
	Section 9.01.   Defeasance	15
	 	 
	Article 10 MISCELLANEOUS	15
	 	 
	Section 10.01.   Trust Indenture Act Controls	15
	 	 
	Section 10.02.   New York Law to Govern	15
	 	 
	Section 10.03.   Counterparts	15
	 	 
	Section 10.04.   Severability	16
	 	 
	Section 10.05.   Ratification	16
	 	 
	Section 10.06.   Effectiveness	16
	 	 
	Section 10.07.   Trustee Makes No Representation	16
	 	 
	EXHIBIT A – Form of 2.500% Note due 2030	A-1
	 	 
	EXHIBIT B – Form of Supplemental Indenture for Guarantors	B-1


 






    	 	 	 



     


    

 





FIRST SUPPLEMENTAL INDENTURE


 


FIRST SUPPLEMENTAL INDENTURE (this “First Supplemental
Indenture”), dated as of August 3, 2020, between FLIR Systems, Inc., a Delaware corporation (the “Company”),
and U.S. Bank National Association, as trustee (the “Trustee”).


 


RECITALS OF THE COMPANY


 


WHEREAS, the Company and the Trustee executed and delivered
an Indenture, dated as of August 3, 2020 (the “Base Indenture,” and together with this First Supplemental Indenture,
the “Indenture”), to provide for the issuance by the Company from time to time of Securities to be issued in one or
more series as provided in the Indenture;


 


WHEREAS, Section 9.01 of the Base Indenture provides,
among other things, that the Company and the Trustee may enter into indentures supplemental to the Base Indenture, without the
consent of any Holders of Securities, to establish the form of any Security, as permitted by the Base Indenture, and to provide
for the issuance of the Notes (as defined below), as permitted by the Base Indenture, and to set forth the terms thereof;


 


WHEREAS, the Company desires to execute this First Supplemental
Indenture, pursuant to Section 2.01 of the Base Indenture, to establish the form and, pursuant to Section 3.01
of the Base Indenture, to provide for the issuance, of a series of its senior unsecured notes designated as its 2.500% Notes due
2030 (the “Notes”), in an initial aggregate principal amount of $500,000,000. The Notes are a series of securities
as referred to in Section 3.01 of the Base Indenture;


 


WHEREAS, the Company has requested that the Trustee execute
and deliver this First Supplemental Indenture;


 


WHEREAS, all things necessary have been done by the Company
to make this First Supplemental Indenture, when executed and delivered by the Company, a valid supplement to the Indenture; and


 


WHEREAS, all things necessary have been done by the
Company to make the Notes, when executed by the Company and authenticated and delivered in accordance with the provisions of
the Base Indenture, the valid obligations of the Company;


 


NOW, THEREFORE, in consideration of the premises stated
herein and the purchase of the Notes by the Holders thereof, the Company and the Trustee mutually covenant and agree for the equal
and proportionate benefit of the respective Holders from time to time of the Notes as follows:


 


Article
1

APPLICATION OF FIRST SUPPLEMENTAL INDENTURE


 


Section 1.01.            
Application of First Supplemental Indenture.


 


Notwithstanding any other provision of this First Supplemental
Indenture, all provisions of this First Supplemental Indenture are expressly and solely for the benefit of the Holders of the Notes,
and any such provisions shall not be deemed to apply to any other securities issued under the Base Indenture and shall not be deemed
to amend, modify or supplement the Base Indenture for any purpose other than with respect to the Notes. Unless otherwise expressly
specified, references in this First Supplemental Indenture to specific Article numbers or Section numbers refer to Articles and
Sections contained in this First Supplemental Indenture as they amend or supplement the Base Indenture, and not the Base Indenture
or any other document. All Initial Notes and Additional Notes, if any, shall be treated as a single class for all purposes of this
Indenture, including waivers, amendments, redemptions and offers to purchase.


 






    	 	1	 



     


    

 


Article
2

DEFINITIONS


 


Section 2.01.            
Certain Terms Defined in the Indenture.


 


For purposes of this First Supplemental Indenture, all capitalized
terms used but not defined herein shall have the meanings ascribed to such terms in the Base Indenture, as amended hereby.


 


Section 2.02.            
Definitions. (a) For the benefit of the Holders of the Notes, the
following terms shall have the meanings set forth in this Section 2.02:


 


“Additional Notes” has the meaning specified in
Section 3.02(b) of this First Supplemental Indenture.


 


“Attributable Debt” in the context of a Sale and
Leaseback Transaction means, as of any particular time, what the Company determines in good faith to be the present value, discounted
at the interest rate implicit in the lease involved in such Sale and Leaseback Transaction, of the lessee’s obligation under
the lease for rental payments during the remaining term of the lease, as it may be extended. For the purposes of this definition,
any amounts the lessee must pay, whether or not designated as rent or additional rent, on account of maintenance and repairs, insurance,
taxes, assessments, water rates or similar charges or any amounts lessee must pay under the lease contingent upon the amount of
sales, maintenance and repairs, insurance, taxes, assessments, water rates or similar charges are not included in the determination
of lessee’s obligations under the lease.


 


“Bankruptcy Law” means Title 11, United States Code,
or any similar U.S. federal or state law or law of any other jurisdiction relating to bankruptcy, insolvency, winding-up, liquidation,
reorganization or relief of debtors.


 


“Business Day” means any day other than a Saturday,
Sunday or other day on which commercial banking institutions in New York City are authorized or required by law to close.


 


“Change of Control” means the occurrence of any
of the following: (1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of
merger or consolidation), in one or more series of related transactions, of all or substantially all of the Company’s properties
or assets and the properties or assets of its Subsidiaries, taken as a whole, to any “person” or “group”
(as those terms are used in Section 13(d)(3) of the Exchange Act), other than the Company or one of its Subsidiaries; (2) the
consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is that any “person”
or “group” (as those terms are used in Section 13(d)(3) of the Exchange Act) becomes the “beneficial owner”
(as defined in Rules 13d-3 and 13d-5 of the Exchange Act), directly or indirectly, of the Company’s Voting Stock representing
a majority of the voting power of our then outstanding Voting Stock; (3) the Company consolidates with, or merges with or into,
any Person, or any Person consolidates with, or merges with or into, the Company, in any such event pursuant to a transaction in
which any of the Company’s outstanding Voting Stock or Voting Stock of such other Person is converted into or exchanged for
cash, securities or other property, other than any such transaction where the Company’s Voting Stock outstanding immediately
prior to such transaction constitutes, or is converted into or exchanged for, Voting Stock representing a majority of the voting
power of the Voting Stock of the surviving Person immediately after giving effect to such transaction; or (4) the adoption
by the Company’s stockholders of a plan relating to the Company’s liquidation or dissolution.


 


Notwithstanding the foregoing, a transaction (or series of related
transactions) will not be deemed to involve a Change of Control under clause (2) above if (i) the Company becomes a direct or indirect
wholly-owned subsidiary of a holding company and (ii)(A) the direct or indirect holders of the Voting Stock of such holding company
immediately following that transaction are substantially the same as the holders of the Company’s Voting Stock immediately
prior to that transaction or (B) immediately following that transaction no “person” or “group” (as those
terms are used in Section 13(d)(3) of the Exchange Act) (other than a holding company satisfying the requirements of this sentence)
is the beneficial owner (as defined in Rules 13d-3 and 13d-5 of the Exchange Act), directly or indirectly, of more than 50% of
the Voting Stock of such holding company.


 






    	 	2	 



     


    







 


“Change of Control Triggering Event” means, with
respect to the Notes: (A) the rating of the Notes is lowered by two of the Rating Agencies or ceases to be rated by two of the
Rating Agencies, in either case, on any date during the period (the “Trigger Period”) commencing on the earlier of
(a) the occurrence of a Change of Control and (b) the first public announcement by the Company of any Change of Control (or pending
Change of Control), and ending 60 days following consummation of such Change of Control (which Trigger Period will be extended
following consummation of a Change of Control for so long as any of the Rating Agencies has publicly announced that it is considering
a possible ratings change), and (B) in the case of the rating of the Notes being lowered by two of the Rating Agencies, the Notes
are rated below Investment Grade by two of the Rating Agencies on any day during the Trigger Period; provided that a Change
of Control Triggering Event will not be deemed to have occurred in respect of a particular Change of Control if each applicable
Rating Agency making the reduction in rating does not publicly announce or confirm or inform the Trustee at the Company’s
or the Trustee’s request that the reduction was the result, in whole or in part, of any event or circumstance comprised of
or arising as a result of, or in respect of, the Change of Control.


 


Notwithstanding the foregoing, no Change of Control Triggering
Event will be deemed to have occurred in connection with any particular Change of Control unless and until such Change of Control
has actually been consummated.


 


“Comparable Treasury Issue” means the United States
Treasury security selected by the Quotation Agent as having a maturity comparable to the remaining term of the Notes to be redeemed
that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of
corporate debt securities of comparable maturity to the remaining term of those Notes.


 


“Comparable Treasury Price” means, with respect
to any Redemption Date, (1) the average of the Reference Treasury Dealer Quotations for that Redemption Date, after excluding the
highest and lowest Reference Treasury Dealer Quotations, or (2) if the Quotation Agent obtains fewer than four Reference Treasury
Dealer Quotations, the average of all Reference Treasury Dealer Quotations so received.


 


“Consolidated Net Tangible Assets” means, as of
any particular time, the total amount of assets minus: (a) all applicable reserves; (b) all current liabilities (excluding any
liabilities which are by their terms extendible or renewable at the option of the obligor to a time more than 12 months after the
time as of which the amount thereof is being computed and excluding current maturities of long-term indebtedness); and (c) all
goodwill, trade names, trademarks, patents, unamortized debt discount and expense and other like intangible assets, all as shown
in the audited consolidated balance sheet of the Company and subsidiaries contained in the Company’s then most recent annual
report to stockholders.





“Credit Agreement” means that certain Second Amended and Restated Credit Agreement, dated as of March 29, 2019,
by and among FLIR Systems, Inc., certain subsidiaries of FLIR Systems, Inc., as designated borrowers, Bank of America, N.A., as
administrative agent, JPMorgan Chase Bank, N.A. and U.S. Bank National Association, as cosyndication agents, Citibank, N.A. and
MUFG Union Bank, N.A., as co-documentation agents, and the other lenders party thereto, as such agreement may be amended, restated,
modified or supplemented from time to time, or renewed, refunded, refinanced, restructured, replaced or extended from time to
time. 


“Default” means any event which is, or after notice
or passage of time or both would be, an Event of Default.


 


“Domestic Subsidiary” means any Subsidiary that
is organized and existing under the laws of the United States, any state in the United States or the District of Columbia.


 


“Fitch” means Fitch Ratings Inc., or any successor
to the rating agency business thereof.


 


“Funded Debt” means all indebtedness for money borrowed
which by its terms matures more than 12 months after the time of the computation of this amount or which is extendible or renewable
at the option of the obligor on this indebtedness to a time more than 12 months after the time of the computation of this amount
or which is classified, in accordance with U.S. generally accepted accounting principles, as long-term debt on the consolidated
balance sheet for the most-recently ended fiscal quarter (or if incurred subsequent to the date of such balance sheet, would have
been so classified) of the Person for which the determination is being made.


 


“Global Notes” means the Notes in the form of Global
Securities issued to the Depositary or its nominee, substantially in the form of Exhibit A.


 


“Guarantee” means the guarantee by any Guarantor
of the Company’s obligations under this First Supplemental Indenture and the Notes, executed pursuant to the provisions of
this First Supplemental Indenture.


 






    	 	3	 



     


    







 


“Guarantor” means any Domestic Subsidiary of the
Company that executes a Guarantee pursuant to the provisions of this First Supplemental Indenture.


 


“Initial Notes” has the meaning specified in Section 3.02(b)
of this First Supplemental Indenture.


 


“Investment Grade” means a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating
category of Moody’s) and a rating of BBB- or better by S&P and Fitch (or its equivalent under any successor rating category
of S&P or Fitch, as applicable), and the equivalent investment grade credit rating from any replacement Rating Agency or Rating
Agencies selected by the Company under the circumstances permitting the Company to select a replacement Rating Agency and in
the manner for selecting a replacement Rating Agency, in each case as set forth in the definition of “Rating Agency.” 


 


“Issue Date” means the date on which the Notes are
initially issued.


 


“Moody’s” means Moody’s Investors Service,
Inc., a subsidiary of Moody’s Corporation, and any successor to its rating agency business.


 


“Notes” has the meaning specified in the recitals
of this First Supplemental Indenture.


 


“Officer” means the Chief Executive Officer, the
President, the Chief Financial Officer, any Vice President, the Treasurer or the Secretary of the specified Person.


 


“Par Call Date” has the meaning specified in Section 3.03(b)
of this First Supplemental Indenture.


 


“Principal Property” means any plant, warehouse,
office building, facility or parcel of real property located within the United States of America, having a gross book value in
excess of 1% of Consolidated Net Tangible Assets at the time of determination thereof and owned by the Company or any Restricted
Subsidiary, in each case other than any such plant, warehouse, office building, facility or parcel of real property, or any portion
of such plant, warehouse, office building, facility or parcel of real property, which, in the opinion of the Board of Directors,
is not of material importance to the total business conducted by the Company and its Restricted Subsidiaries taken as a whole.


 


“Quotation Agent” means the Reference Treasury Dealer
appointed by the Company.


 


“Rating Agency” means each of Fitch, Moody’s
and S&P; provided, that if Fitch, Moody’s or S&P ceases to provide rating services to issuers or investors, the Company
may appoint another “nationally recognized statistical rating organization” within the meaning of Section 3(a)(62)
under the Exchange Act as a replacement for such Rating Agency; provided further, that the Company give notice of such appointment
to the Trustee.


 


“Reference Treasury Dealer” means (1) each of BofA
Securities, Inc. and J.P. Morgan Securities LLC or an affiliate or successor thereof; provided, however, that if any of the foregoing
shall cease to be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), the Company
shall substitute another Primary Treasury Dealer, and (2) any other Primary Treasury Dealer selected by the Company.


 


“Reference Treasury Dealer Quotations” means, with
respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Quotation Agent, of the bid
and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing
to the Quotation Agent by that Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding
that Redemption Date.


 


“Restricted Subsidiary” means any Subsidiary
(a) substantially all of the property of which is located, or that conducts substantially all of its business within the
United States of America (other than its territories or possessions and other than Puerto Rico) and (b) which owns a
Principal Property; provided, however, that any Subsidiary which is principally engaged in financing operations outside the
United States of America or which is principally engaged in leasing or financing installment receivables shall not be deemed
a Restricted Subsidiary for purposes of this First Supplemental Indenture.


 






    	 	4	 



     


    







 


“Sale and Leaseback Transaction” has the meaning
specified in Section 4.02 of this First Supplemental Indenture.


 


“S&P” means Standard & Poor’s Ratings
Services, a division of The McGraw-Hill Companies, Inc. and any successor to its rating agency business.


 


“Treasury Rate” means, with respect to any Redemption
Date, the rate per year equal to: (a) the yield, under the heading which represents the average for the immediately preceding week,
appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which
is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United
States Treasury securities adjusted to constant maturity under the caption “Treasury Constant Maturities,” for the
maturity corresponding to the applicable Comparable Treasury Issue; provided that, if no maturity is within three months
before or after the remaining term of the Notes to be redeemed, yields for the two published maturities most closely corresponding
to the applicable Comparable Treasury Issue shall be determined and the Treasury Rate shall be interpolated or extrapolated from
those yields on a straight line basis, rounding to the nearest month; or (b) if such release (or any successor release) is not
published during the week preceding the calculation date or does not contain such yields, the rate per year equal to the semi-annual
equivalent yield to maturity of the applicable Comparable Treasury Issue, calculated using a price for the applicable Comparable
Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.


 


“Voting Stock” of any specified Person as of any
date means the capital stock of such Person that is at the time entitled to vote generally in the election of the board of directors
of such Person.


 


Article
3

FORM AND TERMS OF THE NOTES


 


Section 3.01.            
Form and Dating.


 


(a)                
The Notes and the Trustee’s certificate of authentication shall be substantially in the form of Exhibit A
attached hereto, which are hereby incorporated into this First Supplemental Indenture. The Notes shall be executed on behalf of
the Company by an Officer of the Company. The Notes may have notations, legends or endorsements required by law, stock exchange
rules or usage. Each Note shall be dated the date of its authentication. The Notes and any beneficial interest in the Notes shall
be in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.


 


(b)               
The terms and notations contained in the Notes shall constitute, and are hereby expressly made, a part of the Indenture,
and the Company and the Trustee, by their execution and delivery of this First Supplemental Indenture, expressly agree to such
terms and provisions and to be bound thereby.


 


(c)                
Global Notes. The Notes shall be issued initially in the form of fully registered Global Securities (the “Global
Notes”), which shall be deposited on behalf of the purchasers of the Notes represented thereby with The Depository Trust
Company, New York, New York (the “Depositary”) and registered in the name of Cede & Co., the Depositary’s
nominee, duly executed by the Company and authenticated by the Trustee.


 


(d)               
Book-Entry Provisions. This Section 3.01(d) shall apply only to the Global Notes deposited with
or on behalf of the Depositary. The Company shall execute and the Trustee shall, in accordance with this Section 3.01(d),
authenticate and deliver the Global Notes that shall be registered in the name of the Depositary or the nominee of the Depositary
and shall be delivered by the Trustee to the Depositary or pursuant to the Depositary’s instructions.


 


(e)                
Paying Agent. The Company initially appoints the Trustee as the Security Registrar and Paying Agent for the
payment of the principal of (and premium, if any) and interest on the Notes and the office of the Trustee at U.S. Bank National
Association, Portland, Oregon, is hereby designated as the Place of Payment where the Notes may be presented for payment.


 






    	 	5	 



     


    

 


Section 3.02.            
Terms of the Notes. The following terms relating to the Notes are hereby established:


 





(a)                
 Title. The Notes shall constitute a series of Securities having the title “2.500% Notes due 2030”.


 


(b)               
Principal Amount. The aggregate principal amount of the Notes that may be initially authenticated and delivered
under the Indenture (the “Initial Notes”) shall be $500,000,000 (except for Notes authenticated and delivered upon
registration of, transfer of, or in exchange for, or in lieu of, other Notes pursuant to Sections 3.04, 3.05, 3.06, 9.06
or 11.07 of the Base Indenture). The Company may from time to time, without the consent of the Holders of Notes, issue additional
Notes (in any such case “Additional Notes”) having the same ranking and the same interest rate, Maturity and other
terms as the Initial Notes except for the Issue Date and the first payment of interest thereon. Any Additional Notes and the Initial
Notes shall constitute a single series under the Indenture and all references to the Notes shall include the Initial Notes and
any Additional Notes unless the context otherwise requires.


 


(c)                
Maturity Date. The entire outstanding principal amount of the Notes shall be payable on August 1, 2030.


 


(d)               
Interest Rate. The rate at which the Notes shall bear interest shall be 2.500% per annum; the date from which
interest shall accrue on the Notes shall be August 3, 2020, or the most recent Interest Payment Date to which interest has been
paid or provided for; the Interest Payment Dates for the Notes shall be February 1 and August 1 of each year, beginning February 1,
2021; the interest so payable, and punctually paid or duly provided for, on any Interest Payment Date, will be paid, in immediately
available funds, to the Persons in whose names the Notes are registered (which shall initially be the Depositary) at the close
of business on the regular record date for such interest, which shall be the January 15 or July 15, as the case may be,
preceding such Interest Payment Date. Interest shall be computed on the basis of a 360-day year comprised of twelve 30-day months.
For so long as the Notes are represented in global form by one or more Global Securities, all payments of principal (and premium,
if any) and interest shall be made by wire transfer of immediately available funds to the Depositary or its nominee, as the case
may be, as the registered owner of the Global Security representing such Notes. In the event that definitive Notes shall have been
issued, all payments of principal (and premium, if any) and interest shall be made by wire transfer of immediately available funds
to the accounts of the registered Holders thereof; provided, that the Company may elect to make such payments at the office
of the Paying Agent in Portland, Oregon; and provided further, that the Company may at its option pay interest by check
to the registered address of each Holder of a definitive Note. If an Interest Payment Date falls on a date that is not a Business
Day, then interest will be paid on the next day that is a Business Day, and no interest on such payment will accrue for the period
from and after such Interest Payment Date.


 


(e)                
Currency. The currency of denomination of the Notes is United States Dollars. Payment of principal of and
interest and premium, if any, on the Notes shall be made in United States Dollars.


 


(f)                
Redemption; Sinking Fund. Except as provided in this Article III, the Company shall have no obligation
to redeem, purchase or repay the Notes pursuant to any mandatory redemption, sinking fund or analogous provisions or at the option
of a Holder thereof.


 


(g)               
Ranking. The Notes will be senior unsecured obligations of the Company. The payment of the principal of,
premium, if any, and interest on the Notes will (i) rank equally in right of payment with all other indebtedness of the Company
that is not by its terms expressly subordinated to other indebtedness of the Company, (ii) rank senior in right of payment
to all indebtedness of the Company that is, by its terms, expressly subordinated to the senior indebtedness of the Company and
(iii) be effectively subordinated to the secured indebtedness of the Company to the extent of the value of the collateral securing
such indebtedness and to the existing and future liabilities of the Company’s subsidiaries.


 


Section 3.03.            
Optional Redemption.


 


(a)                
The provisions of Article Eleven of the Base Indenture, as supplemented by the provisions of this First Supplemental
Indenture, shall apply to the Notes.


 






    	 	6	 



     


    

 


(b)               
The Notes shall be redeemable as a whole or in part, at the Company’s option, at any time and from time to
time at the following Redemption Prices:


 





(i)                 
 upon redemption prior to May 1, 2030 (the “Par Call Date”), the Company shall pay a Redemption
Price equal to the greater of (i) 100% of the principal amount of the Notes to be redeemed and (ii) as determined by the Quotation
Agent, the sum of the present values of the remaining scheduled payments of principal and interest in respect of the Notes
to be redeemed (not including any interest accrued as of the Redemption Date) from the Redemption Date through the Par Call Date,
discounted to the Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury
Rate plus 30 basis points, plus accrued and unpaid interest on the Notes to be redeemed to the Redemption Date; and


 


(ii)               
upon redemption on and after the Par Call Date, the Company shall pay a Redemption Price equal to 100% of the aggregate
principal amount of the Notes being redeemed, plus accrued and unpaid interest thereon, if any, to, but not including, the Redemption
Date.


 


(c)                
Any notice to holders of Notes of any redemption will include the appropriate calculation of the Redemption Price,
but does not need to include the Redemption Price itself. The actual Redemption Price, calculated as described above, will be set
forth in an Officers’ Certificate of the Company delivered to the Trustee no later than two Business Days prior to the Redemption
Date. The Company may provide in a notice of redemption that payment of such Redemption Price and performance of the Company’s
obligations with respect to such redemption or purchase may be performed by another Person.


 


(d)                
If less than all of the Notes are redeemed at any time and the Notes are Global Notes held by the Depositary, the
Depositary will select the Notes to be redeemed in accordance with its operational arrangements. If the Notes are not Global Notes
held by the Depositary, the Trustee will select Notes called for redemption in part on a pro rata basis or on as nearly
a pro rata basis as is practicable; provided that Notes in principal amounts of $2,000 or less shall be redeemed
in whole and not in part. In the case of Notes represented by a Global Security, the outstanding principal amount of the Global
Security representing the Notes will be reduced by book-entry. Notes called for redemption become due on the Redemption Date, subject
to the satisfaction of any conditions precedent provided in the notice of redemption. On and after the Redemption Date, interest
stops accruing on Notes or portions of them called for redemption (unless there is a default in the payment thereof).


 


Section 3.04.            
Repurchase of Notes upon a Change of Control.


 


(a)                
If a Change of Control Triggering Event occurs with respect to the Notes, unless the Company has exercised its right
to redeem the Notes as provided in Section 3.03 hereof, the Company shall make an offer (a “Change of Control
Offer”) to each Holder of a Note to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess
thereof) of that Holder’s Notes on the terms set forth in this Section 3.04 and in the Notes. In a Change of
Control Offer, the Company shall offer payment in cash equal to 101% of the aggregate principal amount of Notes repurchased, plus
accrued and unpaid interest, if any, on the Notes repurchased to the date of repurchase (a “Change of Control Payment”).
Within 30 days following any Change of Control Triggering Event or, at the Company’s option, prior to any Change of Control,
but after public announcement of the transaction that constitutes or may constitute the Change of Control, the Company shall send
a notice to Holders of the Notes, describing the transaction that constitutes or may constitute the Change of Control Triggering
Event and offering to repurchase the Notes on the date specified in the notice, which date shall be no earlier than 30 days and
no later than 60 days from the date such notice is sent (a “Change of Control Payment Date”), pursuant to the procedures
required by the Notes and described in such notice. The notice shall, if sent prior to the date of consummation of the Change of
Control, state that the Change of Control Offer is conditioned on the Change of Control Triggering Event occurring on or prior
to the Change of Control Payment Date.


 


(b)               
On the Change of Control Payment Date, the Company shall, to the extent lawful:


 


(i)                
accept for payment all Notes or portions of Notes properly tendered pursuant to the applicable Change of Control
Offer;


 


(ii)               
deposit with the Paying Agent an amount equal to the Change of Control Payment in respect of all Notes or portions
of Notes properly tendered; and


 






    	 	7	 



     


    







 


(iii)              
 deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officer’s Certificate
stating the aggregate principal amount of Notes or portions of Notes being repurchased.


 


(c)                
The Company shall not be required to make a Change of Control Offer with respect to the Notes upon the occurrence
of a Change of Control Triggering Event if a third party makes such an offer in the manner, at the times and otherwise in compliance
with the requirements for an offer made by the Company and the third party purchases all Notes properly tendered and not withdrawn
under its offer. In addition, the Company shall not repurchase any Notes if there has occurred and is continuing on the Change
of Control Payment Date an Event of Default under the Indenture, other than a default in the payment of the Change of Control Payment
on the Change of Control Payment Date.


 


(d)               
The Company shall comply with the requirements of Rule 14e-1 under the Exchange Act, and any other securities laws
and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes
as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict
with the Change of Control Offer provisions of the Notes, the Company shall comply with those securities laws and regulations and
shall not be deemed to have breached its obligations under the Change of Control Offer provisions of the Notes by virtue of any
such conflict and compliance.


 


(e)                
If Holders of not less than 90% in aggregate principal amount of the outstanding Notes validly tender and do not
withdraw such Notes in a Change of Control Offer and the Company, or any third party making a Change of Control Offer in lieu of
the Company, as described in this Section 3.04, purchases all of the Notes validly tendered and not withdrawn by such Holders,
the Company shall have the right, upon not less than 30 nor more than 60 days’ prior notice, given not more than 30 days
following such purchase pursuant to the Change of Control Offer described herein, to redeem all Notes that remain outstanding following
such purchase at a Redemption Price in cash equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if
any, to, but excluding, the Redemption Date (subject to the right of Holders of record on a record date to receive interest on
the relevant Interest Payment Date).


 


Article
4

CERTAIN COVENANTS


 


The following covenants shall be applicable to the Company for
so long as any of the Notes are Outstanding. Nothing in this Article will, however, affect the Company’s rights or obligations
under any other provision of the Base Indenture or this First Supplemental Indenture.


 


Section 4.01.            
Restrictions on Secured Debt.


 


(a)                
The Company will not, nor will it permit any Restricted Subsidiary to, create, incur, issue, assume or guarantee
any indebtedness for borrowed money (hereinafter called “indebtedness”) secured by a mortgage, security interest, pledge
or lien (hereinafter called “mortgage”) on or upon any Principal Property or on any capital stock or indebtedness of
any Restricted Subsidiary (whether such Principal Property, capital stock or indebtedness is now owned or hereafter acquired) without
in any such case ensuring that the Securities (together with, if the Company shall so determine, any other indebtedness created,
incurred, issued, assumed or guaranteed by the Company or any Restricted Subsidiary and then existing or thereafter created) shall
be secured by such mortgage equally and ratably with (or, at the option of the Company, prior to) such indebtedness, so long as
such indebtedness shall be so secured.


 


(b)               
The provisions of Section 4.01(a) shall not, however, apply to any indebtedness secured by any one or more
of the following:


 


(1) mortgages of or upon any property acquired,
constructed or improved by, or of or upon any capital stock or indebtedness acquired by, the Company or any Restricted
Subsidiary after the date hereof to (i) secure the payment of all or any part of the purchase price of such property, capital
stock or indebtedness upon the acquisition thereof or (ii) secure indebtedness incurred, assumed or guaranteed for the
purpose of financing or refinancing all or any part of the purchase price of such property, capital stock or indebtedness or
of the cost of any construction or improvements on such properties, in each case, to the extent that the indebtedness is
incurred, assumed or guaranteed prior to or within 365 days after the later of the applicable acquisition, construction or
improvement of such property, as the case may be, provided, that in the case of any such acquisition, construction or
improvement the mortgage shall not apply to any property, capital stock or indebtedness theretofore owned by the Company or
any Restricted Subsidiary, other than, in the case of any such construction or improvement, any theretofore unimproved or
substantially unimproved real property on which the property so constructed or the improvement is located;


 






    	 	8	 



     


    

 


(2) mortgages of or upon any property, capital stock or indebtedness
existing at the time of acquisition thereof by the Company or any Restricted Subsidiary;


 


(3) mortgages of or upon any property of a Person existing at
the time such Person is merged with or into or consolidated with the Company or any Restricted Subsidiary or existing at the time
of a sale or transfer of all or substantially all of the properties of a Person to the Company or any Restricted Subsidiary;


 


(4) mortgages of or upon any property of, or capital stock or
indebtedness of, a Person existing at the time such Person becomes a Restricted Subsidiary;


 


(5) mortgages to secure indebtedness of any Restricted Subsidiary
to the Company or to another Restricted Subsidiary;


 


(6) mortgages in favor of the United States of America or any
State thereof, or any department, agency or instrumentality or political subdivision of the United States of America or any State
thereof, or in favor of any other country or political subdivision, to secure partial, progress, advance or other payments pursuant
to any contract or statute or to secure any indebtedness incurred or guaranteed for the purpose of financing or refinancing all
or any part of the purchase price of the property, capital stock or indebtedness subject to such mortgages, or the cost of constructing
or improving the property subject to such mortgages (including, without limitation, mortgages incurred in connection with pollution
control, industrial revenue or similar financings); and


 


(7) any extension, renewal or replacement (or successive extensions,
renewals or replacements) in whole or in part of any mortgage existing at the date of this Indenture or any mortgage referred to
in the foregoing clauses (1) through (6), inclusive, provided, however, that the principal amount of indebtedness secured thereby
shall not exceed the principal amount of indebtedness so secured at the time of such extension, renewal or replacement, and that
such extension, renewal or replacement shall be limited to all or a part of the property (plus improvements and construction on
such property), capital stock or indebtedness which was subject to the mortgage so extended, renewed or replaced.


 


(c)                
Notwithstanding the provisions of Section 4.01(a), the Company or any Restricted Subsidiary may, without equally
and ratably securing the Notes, issue, assume or guarantee indebtedness secured by a mortgage not excepted by clauses (1) through
(7) of Section 4.01(b), if the aggregate amount of such indebtedness, together with all other indebtedness of, or indebtedness
guaranteed by, the Company and its Restricted Subsidiaries existing at such time and secured by mortgages not so excepted and the
Attributable Debt in respect of Sale and Leaseback Transactions existing at such time (other than Sale and Leaseback Transactions
in which the property involved would have been permitted to be mortgaged under clause (1) or (6) of Section 4.01(b) and
other than Sale and Leaseback Transactions in which the proceeds have been applied in accordance with clause (iii) of Section
4.02), does not at the time exceed the greater of (i) 15% of Consolidated Net Tangible Assets and (ii) $200.0 million.


 






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Section 4.02.            
Restrictions on Sale and Leaseback Transactions.


 


The Company will not, and will not permit any Restricted
Subsidiary to, enter into any arrangement with any Person providing for the leasing by the Company or any Restricted
Subsidiary of any Principal Property, whether now owned or hereafter acquired (except for temporary leases for a term,
including any renewal thereof, of not more than three years and except for leases between the Company and any Restricted
Subsidiary, between any Restricted Subsidiary and the Company or between Restricted Subsidiaries), which property has been or
is to be sold or transferred by the Company or such Restricted Subsidiary to any Person with the intention of taking back a
lease of such property (herein referred to as a “Sale and Leaseback Transaction”) unless: (i) the Company or such
Restricted Subsidiary would (at the time of entering into such arrangement) be entitled pursuant to clause (1) or (6) of Section
4.01(b), without equally and ratably securing the Securities, to create, incur, issue, assume or guarantee indebtedness
secured by a mortgage on such property, or (ii) the Company or such Restricted Subsidiary would (at the time of entering into
such arrangement) be entitled pursuant to Section 4.01(c), without equally and ratably securing the Securities, to
create, incur, issue, assume or guarantee indebtedness secured by a mortgage on such property in an amount at least equal to
the Attributable Debt in respect of such Sale and Leaseback Transaction or (iii) the Company shall apply, within 365 days of
the effective date of any such arrangement, an amount not less than the greater of (x) the net proceeds of the sale of such
property or (y) the fair market value (as determined by the Board of Directors) of such property to either the prepayment or
retirement (other than any mandatory prepayment or retirement) of Funded Debt or to the acquisition, construction or
improvement of a manufacturing plant or manufacturing facility which is, or upon such acquisition, construction or
improvement will be, a Principal Property.


 


Section 4.03.            
Guarantees. The Company shall not permit any of its Domestic Subsidiaries, directly or indirectly, to guarantee any indebtedness
of the Company under the Credit Agreement, unless such Domestic Subsidiary simultaneously executes and delivers to the Trustee
a supplemental indenture substantially in the form attached hereto as Exhibit B providing for the Guarantee of the payment of
the Notes by such Domestic Subsidiary, which Guarantee shall be pari passu with such Domestic Subsidiary’s guarantee of
the indebtedness under the Credit Agreement. Notwithstanding the preceding paragraph, any Guarantee by a Domestic Subsidiary shall
provide by its terms that it shall be automatically and unconditionally released and discharged under the circumstances described
under Section 7.05.


 


Article
5

EVENTS OF DEFAULT


 


Section 5.01.            
Events of Default.


 


Solely for the benefit of the Holders of the Notes, Section 5.01
of the Base Indenture is hereby deleted in its entirety and replaced with the following:


 


““Event of Default”,
wherever used herein with respect to the Notes, means any one of the following events (whatever the reason for such Event of Default
and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order
of any court or any order, rule or regulation of any administrative or governmental body):


 


(a)          
a failure to pay interest upon any Note that continues for a period of 30 days after payment is due;


 


(b)          
a failure to pay the principal or premium, if any, on any Note when due upon maturity, redemption, acceleration or
otherwise;


 


(c)          
a failure to comply with any of the Company’s other agreements contained in this Indenture (other than a covenant
or warranty a default in whose performance or whose breach is elsewhere in this Section specifically dealt with), for a period
of 90 days after written notice to the Company of such failure from the Trustee (or to the Company and the Trustee from the holders
of at least 25% of the principal amount of the Notes then outstanding);


 


(d)          
(i) a failure to make any payment at maturity, including any applicable grace period, of any indebtedness of the
Company in an amount in excess of $100,000,000 aggregate principal amount and continuance of this failure to pay or (ii) a
default on any of the Company’s indebtedness which default results in the acceleration of indebtedness in an aggregate principal
amount in excess of $100,000,000 without such indebtedness having been discharged or the acceleration having been cured, waived,
rescinded or annulled, within, in the case of clause (i) or (ii) above, 30 days after the Company receives written notice
from the Trustee or the Trustee receives notice from the Holders of at least 25% in aggregate principal amount of the Notes then
outstanding; provided, however, that if the failure, default or acceleration referred to in clause (i) or (ii) above
shall cease or be cured, waived, rescinded or annulled, then the Event of Default shall be deemed cured; or


 






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(e)          
the Company pursuant to or within the meaning of any Bankruptcy Law:


 










(i)           
 commences a voluntary insolvency proceeding;


 


(ii)          
consents to the entry of an order for relief against it in an involuntary insolvency proceeding or consents to its
dissolution or winding-up;


 


(iii)         
consents to the appointment of a custodian of it or for any substantial part of its property; or


 


(iv)         
makes a general assignment for the benefit of its creditors; and


 


(f)           
a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that:


 


(i)           
is for relief against the Company in an involuntary insolvency proceeding;


 


(ii)          
appoints a custodian of the Company or for any substantial part of its property;


 


(iii)         
orders the winding-up, liquidation or dissolution of the Company; or


 


(iv)         
orders the presentation of any plan or arrangement, compromise or reorganization of the Company;


 


and in each such case the order or decree remains unstayed and
in effect for 90 days.”


 


Section 5.02.            
Acceleration of Maturity; Recession.


 


Subject to Section 6.01 of the Base Indenture, in
case an Event of Default shall occur and be continuing with respect to the Notes, the Trustee shall be under no obligation to exercise
any of its rights or powers under this Indenture at the request or direction of any of the Holders of the Notes, unless such Holders
shall have offered to the Trustee reasonable indemnity. Subject to Section 5.07 of the Base Indenture, the Holders
of a majority in aggregate principal amount of the Notes then outstanding will have the right to direct the time, method and place
of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on the Trustee
with respect to the Notes.


 


Article
6

CONSOLIDATION, MERGERS, SALE OF ASSETS


 


 


Section 6.01.            
Consolidation, Merger and Sale of Assets.


 


Solely for the benefit of the Holders of the Notes, Section 8.01
of the Base Indenture is hereby deleted in its entirety and replaced with the following:


 


“The Company shall not consolidate
with or merge into any other Person or convey, sell, transfer or lease (as lessor) its properties and assets as, or substantially
as, an entirety to any Person, unless:


 


(a)          
(i) in the case of a merger,  the Company is the surviving Person, or (ii) the Person formed by such consolidation
or into which the Company is merged or the Person which acquires by conveyance or transfer, or which leases, the properties and
assets of the Company as, or substantially as, an entirety shall be a corporation or partnership, shall be organized and validly
existing under the laws of the United States of America, any State thereof or the District of Columbia and shall expressly assume,
by an indenture supplemental hereto, executed and delivered to the Trustee, in form reasonably satisfactory to the Trustee, the
due and punctual payment of the principal of and any premium and interest on all the Securities and the performance or observance
of every covenant of this Indenture on the part of the Company to be performed or observed;


 


(b)         
immediately after giving effect to such transaction, no Event of Default, and no event which, after notice or lapse
of time or both, would become an Event of Default, shall exist; and


 






    	 	11	 



     


    

 



 


(c)           the Company has delivered to the Trustee an Officer’s Certificate and an Opinion of Counsel, each stating
that such consolidation, merger, conveyance, transfer or lease and, if a supplemental indenture is required in connection with
such transaction, such supplemental indenture comply with this Article and that all conditions precedent herein provided for relating
to such transaction have been complied with.


 


If, upon any such consolidation or merger,
or upon any such conveyance, sale, transfer or lease, as provided above, any Principal Property of the Company or any capital stock
or indebtedness of any Restricted Subsidiary, owned immediately prior to the transaction, would thereupon become subject to any
mortgage, security interest, pledge or lien securing any indebtedness for borrowed money of, or guaranteed by, such other corporation
(other than any mortgage, security interest, pledge or lien permitted as described in Section 4.01), the Company, prior
to such consolidation, merger, lease, sale or transfer, will, by executing and delivering to the Trustee a supplemental indenture,
secure the due and punctual payment of the principal of, and any premium and interest on, the Notes (together with, if the Company
shall so determine, any other indebtedness of, or guaranteed by, the Company or any Restricted Subsidiary and then existing or
thereafter created) equally and ratably with (or, at the Company’s option, prior to) the indebtedness secured by such mortgage,
security interest, pledge or lien.”


 


Article
7

GUARANTEE


 


Section 7.01.            
Guarantee.


 


(a)          
Subject to this Article Seven, each Guarantor, jointly and severally, and fully and unconditionally, guarantees
to each Holder of a Note authenticated and delivered by the Trustee and to the Trustee and its successors and assigns, irrespective
of the validity and enforceability of the Indenture, the Notes or the obligations of the Company hereunder or thereunder, that:
(i) the principal of, premium, if any, and interest on the Notes shall be promptly paid in full when due, whether at maturity,
by acceleration, redemption or otherwise, and interest on the overdue principal of, premium, if any, and interest on the Notes,
if lawful (subject in all cases to any applicable grace period provided herein), and all other obligations of the Company to the
Holders or the Trustee hereunder or thereunder, including any obligations to repurchase the Notes from the Holders, shall be promptly
paid in full or performed, all in accordance with the terms hereof and thereof; and (ii) in case of any extension of time
of payment or renewal of the Notes or any of such other obligations, the same shall be promptly paid in full when due or performed
in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. Failing payment
when due of any amount so guaranteed or any performance so guaranteed for whatever reason, each Guarantor shall be jointly and
severally obligated to pay the same immediately. Each Guarantor agrees that this is a guarantee of payment and not a guarantee
of collection.


 


(b)          
To the maximum extent permitted under applicable law, the obligations of any Guarantor hereunder shall be unconditional,
irrespective of the validity, regularity or enforceability of the Notes or the Indenture, the absence of any action to enforce
the same, any waiver or consent by any Holder of the Notes with respect to any provisions hereof or thereof, the recovery of any
judgment against the Company, any action to enforce the same or any other circumstance which might otherwise constitute a legal
or equitable discharge or defense of a Guarantor. Subject to Section 5.07 of the Base Indenture, each Guarantor shall
waive diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy of the
Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever and covenants
that this Guarantee shall not be discharged except by complete performance of the obligations contained in the Notes and the Indenture.


 


(c)          
If any Holder or the Trustee is required by any court or otherwise to return to the Company, any Guarantors or any
custodian, trustee, liquidator or other similar official acting in relation to any of the Company or any Guarantors, any amount
paid by any of them to the Trustee or such Holder, this Guarantee, to the extent theretofore discharged, shall be reinstated in
full force and effect.


 


(d)           No
Guarantor shall be entitled to any right of subrogation in relation to the Holders in respect of any obligations guaranteed
hereby until payment in full of all obligations guaranteed hereby. As between the Guarantors, on the one hand, and the
Holders and the Trustee, on the other hand, (x) the maturity of the obligations guaranteed hereby may be accelerated as
provided in Article Five for the purposes of this Guarantee, notwithstanding any stay, injunction or other prohibition
preventing such acceleration in respect of the obligations guaranteed hereby, and (y) in the event of any declaration of
acceleration of such obligations as provided in Article Five, such obligations (whether or not due and payable) shall
forthwith become due and payable by any Guarantors for the purpose of this Guarantee. Any Guarantor that makes a payment
under its Guarantee shall have the right to seek contribution from any non-paying Guarantor, so long as the exercise of such
right does not impair the rights of the Holders under the Guarantee.


 






    	 	12	 



     


    

 


Section 7.02.            
Limitation on Guarantor Liability.


 


The maximum aggregate amount guaranteed hereunder by any Guarantor
shall not exceed the maximum amount that can be hereby guaranteed without rendering the Indenture, as it relates to such Guarantor,
voidable under applicable law relating to fraudulent conveyance or fraudulent transfer or similar laws affecting the rights of
creditors generally.


 


Section 7.03.            
Execution and Delivery of Guarantee.


 


(a)          
To evidence its Guarantee set forth in Section 7.01, each Guarantor agrees that a supplemental indenture
substantially in the form attached hereto as Exhibit B shall be executed on behalf of such Guarantor by one of its Officers.


 


(b)          
Each Guarantee set forth in Section 7.01 shall remain in full force and effect notwithstanding any failure
to endorse on each Note a notation of such Guarantee.


 


(c)          
If an Officer whose signature is on any Guarantee no longer holds that office at the time the Trustee authenticates
the Security on which any Guarantee is endorsed, the Guarantee shall be valid nevertheless.


 


(d)          
The delivery of any Security by the Trustee, after the authentication thereof hereunder, shall constitute due delivery
of the Guarantee set forth in this Indenture on behalf of any Guarantor.


 


Section 7.04.            
Guarantors May Consolidate, etc., on Certain Terms.


 


(a)          
Except as set forth in Section 7.05, a Guarantor may not sell, lease, transfer, convey or otherwise dispose
of all or substantially all of its properties or assets to, or consolidate with or merge with or into (whether or not such Guarantor
is the surviving Person), another Person, other than the Company or another Guarantor, unless (1) immediately after giving
effect to that transaction, no Default or Event of Default exists and (2) the Person acquiring the property or assets in any
such sale, lease, transfer, conveyance or other disposition or the Person formed by or surviving any such consolidation or merger
(if other than the Guarantor) is organized or existing under the laws of the United States, any state thereof or the District of
Columbia and assumes all the obligations of that Guarantor under this Indenture and its Guarantee pursuant to a supplemental indenture
satisfactory to the Trustee.


 


(b)          
In case of any such consolidation, merger, sale, lease, transfer, conveyance or other disposition governed by Section 7.04(a)(2),
upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee and satisfactory
in form to the Trustee, of the Guarantee endorsed upon the Securities and the due and punctual performance of all of the covenants
and conditions of this Indenture to be performed by a Guarantor, such successor Person shall succeed to and be substituted for
a Guarantor with the same effect as if it had been named herein as a Guarantor. Such successor Person thereupon may cause to be
signed any or all of the Guarantees to be endorsed upon all of the Notes issuable hereunder which theretofore shall not have been
signed by the Company and delivered to the Trustee. All the Guarantees so issued shall in all respects have the same legal rank
and benefit under this Indenture as the Guarantees theretofore and thereafter issued in accordance with the terms of this Indenture
as though all of such Guarantees had been issued at the date of the execution hereof.


 






    	 	13	 



     


    

 


Section 7.05.            
Release of a Subsidiary Guarantor.


 


(a)           Any
Guarantor shall be automatically released and relieved of any obligations under its Guarantee, (i) in connection with
any sale or other disposition of all of the capital stock of such Guarantor, or all or substantially all of such
Guarantor’s assets, to a Person that is not (either before or after giving effect to such transaction) the Company or a
Domestic Subsidiary of the Company required to deliver a Guarantee under Section 4.03; (ii) upon Legal
Defeasance or Covenant Defeasance (as defined below) as permitted under this Indenture; or (iii) upon release or
discharge of all guarantees by such Guarantor of all other indebtedness of the Company, except a discharge or release by or
as a result of payment under such guarantees of other indebtedness of the Company. Notwithstanding the foregoing, the Company
shall not, directly or indirectly, sell or make any other disposition of all of the capital stock of any Guarantor or of all
or substantially all of any Guarantor’s assets to a Person that is not a Domestic Subsidiary solely for the purpose of
causing such Guarantor to be released from its Guarantee.


 


(b)          
Upon delivery by the Company to the Trustee of an Officers’ Certificate to the effect that one of the foregoing
requirements has been satisfied and the conditions to the release of a Guarantor under this Section 7.05 have been
met, the Trustee shall execute any documents reasonably required in order to evidence the release of such Guarantor from its obligations
under its Guarantee. Any Guarantor not released from its obligations under its Guarantee shall remain liable for the full amount
of principal of, premium, if any, and interest on the Securities as provided in this Article Seven.


 


Article
8

AMENDMENT AND WAIVER


 


Solely for the benefit of the Holders of the Notes, Section 9.02
of the Base Indenture is hereby deleted in its entirety and replaced with the following:


 


Section 8.01.            
With Consent of Holders.


 


(a)          
The Company and the Trustee may enter into one or more supplemental indentures to add to, change or eliminate any
of the provisions of this Indenture in respect of the Securities of a series with the consent of the Holders of a majority in aggregate
principal amount of the then outstanding Securities of such series (including consents obtained in connection with a tender offer
or exchange offer for such Securities). Any past default or compliance with any provisions of this Indenture with respect to Securities
of a series may be waived (except a default in the payment of principal, premium or interest and except as provided in Section 9.02(b))
with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Securities of such
series.


 


(b)          
However, without the consent of each Holder of an outstanding Security of the affected series, no amendment may:


 


(i)           
change the due date of the principal of, or any installment of principal of or interest on any Security;


 


(ii)          
reduce the principal amount of, or any premium or interest rate on, any Security;


 


(iii)         
change the place or currency of payment of principal of, or any premium or interest on any Security;


 


(iv)         
impair the right to institute suit for the enforcement of any payment on or with respect to any Security; or


 


(v)          
reduce the percentage in principal amount of the then outstanding the Securities, the consent of whose holders is
required for modification or amendment of the indenture, for waiver of compliance with certain provisions of the indenture or for
waiver of certain defaults.


 


(c)          
The consent of the Holders of the Securities shall not be necessary to approve the particular form of any proposed
amendment. It shall be sufficient if such consent approves the substance of the proposed amendment.


 


(d)          
After an amendment that requires the consent of the Holders of the affected Securities becomes effective, the Company
shall mail to each Holder of the affected Securities at such Holder’s address appearing in the register maintained by the
Registrar pursuant to Section 3.05 a notice briefly describing such amendment. However, the failure to give such notice
to all Holders of such Securities, or any defect therein, shall not impair or affect the validity of the amendment.


 






    	 	14	 



     


    







 


(e)           Upon
the written request of the Company accompanied by a Board Resolution authorizing the execution of any such supplemental indenture,
and upon the receipt by the Trustee of evidence reasonably satisfactory to the Trustee of the consent of the Holders as aforesaid
and upon receipt by the Trustee of the documents described in Section 9.03, the Trustee shall join with the Company
in the execution of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights, duties
or immunities under this Indenture, in which case the Trustee may, but shall not be obligated to, enter into such supplemental
indenture.”


 


Article
9

DEFEASANCE


 


Section 9.01.            
Defeasance.         


 


Subject
to Section 13.04 of the Base Indenture, the Company may at any time elect to terminate its obligations with respect to
the Notes (hereinafter, “Legal Defeasance”) except for obligations under Sections 3.05 and 3.06 of the
Base Indenture and obligations under the TIA on a date the applicable conditions set forth in Section 13.04 of the
Base Indenture are satisfied. If the Company exercises its Legal Defeasance option with respect to the Notes, payments of the
Notes may not be accelerated because of an Event of Default with respect thereto. The Company may terminate its obligations with
respect to the Notes under Sections 4.01, 4.02 and 4.03 of the First Supplemental Indenture and Section
7.04 of the Base Indenture on a date the applicable conditions set forth in Section 13.04 of the Base Indenture
are satisfied (hereinafter, “Covenant Defeasance”) and thereafter, any failure to comply with any of Section 4.01, 4.02 or 4.03 of the First Supplemental Indenture or Section 7.04 of the Base Indenture will not constitute
a Default or an Event of Default with respect to the Notes. The Company may exercise its Legal Defeasance option with respect
to the Notes notwithstanding its prior exercise of its Covenant Defeasance option with respect to the Notes.


 


Article
10

MISCELLANEOUS


 


Section 10.01.         
Trust Indenture Act Controls.


 


If any provision of this First Supplemental Indenture limits,
qualifies or conflicts with another provision which is required to be included in this First Supplemental Indenture by the Trust
Indenture Act, the required provision shall control. If any provision of this First Supplemental Indenture modifies or excludes
any provision of the Trust Indenture Act which may be so modified or excluded, the latter provision shall be deemed to apply to
this First Supplemental Indenture as so modified or to be excluded, as the case may be.


 


Section 10.02.         
New York Law to Govern.


 


This First Supplemental Indenture and the Notes shall be governed
by and construed in accordance with the laws of the State of New York.


 


Section 10.03.         
Counterparts.


 


This First Supplemental Indenture may be executed in any number
of counterparts, each of which so executed shall be deemed to be an original, but all such counterparts shall together constitute
but one and the same instrument. The exchange of copies of this First Supplemental Indenture and of signature pages by facsimile
or electronic transmissions (in “.pdf” or other format) shall constitute effective execution and delivery of this First
Supplemental Indenture as to the parties hereto and may be used in lieu of the original First Supplemental Indenture for all purposes.
Signatures of the parties hereto transmitted by facsimile or electronically (in “.pdf” or other format) shall be deemed
to be their original signatures for all purposes.


 






    	 	15	 



     


    

 


Section 10.04.         
Severability.


 





If any provision of this First Supplemental Indenture or the
Notes shall be held to be illegal or unenforceable under applicable law, then the remaining provisions hereof shall be construed
as though such invalid, illegal or unenforceable provision were not contained therein.


 


Section 10.05.         
Ratification.


 


The Base Indenture, as supplemented and amended by this First
Supplemental Indenture, is in all respects ratified and confirmed. The Indenture shall be read, taken and construed as one and
the same instrument. All provisions included in this First Supplemental Indenture supersede any conflicting provisions included
in the Base Indenture unless not permitted by law. The Trustee accepts the trusts created by the Indenture, and agrees to perform
the same upon the terms and conditions of the Indenture.


 


Section 10.06.         
Effectiveness.


 


The provisions of this First Supplemental Indenture shall become
effective as of the date hereof.


 


Section 10.07.         
Trustee Makes No Representation.


 


The recitals contained herein are made by the Company and not
by the Trustee, and the Trustee assumes no responsibility for the correctness thereof. The Trustee makes no representation as to
the validity or sufficiency of this First Supplemental Indenture. All rights, protections, privileges, indemnities and benefits
granted or afforded to the Trustee under the Indenture shall be deemed incorporated herein by this reference and shall be deemed
applicable to all actions taken, suffered or omitted by the Trustee in each of its capacities hereunder, and each agent, custodian
and other Person employed to act under this First Supplemental Indenture.


 


[Remainder of page intentionally left blank.]


 






    	 	16	 



     


    

  


IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed as of the date first above written.


 


	 	FLIR SYSTEMS, INC.



	 	 	 
	 	By:	/s/ Carol P. Lowe
	 	Name:	Carol P. Lowe
	 	Title:	Executive Vice President and Chief Financial Officer
	 	 	 
	 	U.S. BANK NATIONAL ASSOCIATION, 


as Trustee 



	 	 	 
	 	By:	/s/ Linda A. McConkey
	 	Name:	Linda A. McConkey
	 	Title:	Vice President & Relationship Manager 



 






    	 	 	 



     


    

 


EXHIBIT A


 


FORM OF 2.500% NOTE DUE 2030


 






    


    


    

 








THIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE THEREOF. THIS NOTE MAY NOT BE EXCHANGED IN WHOLE
OR IN PART FOR A NOTE REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON
OTHER THAN SUCH DEPOSITORY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.


 


UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.


 


CUSIP No.: [●]


 


ISIN No.: [●]


 


FLIR SYSTEMS, INC.


 


	No. [●]	 	$[●]


 


2.500% NOTE DUE 2030


 


FLIR SYSTEMS, INC., a Delaware corporation,
as issuer (the “Company”), for value received, promises to pay to CEDE & CO. or registered assigns the principal
sum of $[●] on August 1, 2030.


 


Interest Payment Dates: February 1 and
August 1 of each year, commencing February 1, 2021.


 


Record Dates: January 15 and July 15 of
each year.


 


Reference is made to the further provisions
of this Note contained herein, which will for all purposes have the same effect as if set forth at this place.


 


IN WITNESS WHEREOF, the Company has caused
this Note to be signed manually or by facsimile by one of its duly authorized officers.


 






    	 	 	 



     


    

 


	
        Dated: [●], 2020
	FLIR SYSTEMS, INC.



	 	 	 
	 	By:	 
	 		Name:
	 		Title:



 






    	 	 	 



     


    

 





Certificate of Authentication


 


This is one of the 2.500% Notes due 2030 referred to in the
within-mentioned Indenture.


 





	
        
	U.S. BANK NATIONAL ASSOCIATION,

as Trustee



	 	 	 
	 	By:	 
	 		Name:
	 		Title:
	 	 	 
	Dated: [●], 2020	 	 


 






    	 	 	 



     


    

 


FLIR SYSTEMS, INC.


 


2.500% NOTE DUE 2030


 


1. Interest. FLIR Systems, Inc.,
a Delaware corporation, as issuer (the “Company”), promises to pay, until the principal hereof is paid or made
available for payment, interest on the principal amount set forth on the face hereof at a rate of 2.500% per annum. Interest hereon
will accrue from and including the most recent date to which interest has been paid or, if no interest has been paid, from and
including August 3, 2020 to but excluding the date on which interest is paid. Interest shall be payable in arrears on February
1 and August 1 of each year, commencing February 1, 2021. Interest will be computed on the basis of a 360-day year comprised of
twelve 30-day months. The Company shall pay interest on overdue principal and on overdue interest (to the full extent permitted
by law) at the rate borne by the Notes.


 


2. Method of Payment. The Company
will pay interest hereon (except defaulted interest) to the Persons who are registered Holders at the close of business on the
January 15 and July 15 immediately preceding the interest payment date (whether or not a Business Day). Holders do not have to
surrender Notes to a Paying Agent to collect principal payments. The Company will pay to the Paying Agent principal and interest
in money of the United States of America that at the time of payment is legal tender for payment of public and private debts. If
a Holder has given wire transfer instructions to the Company, the Company will pay, or cause to be paid by the Paying Agent, all
principal (and premium, if any) and interest on that Holder’s Notes in accordance with those instructions. All other payments
on the Notes will be made at the office or agency of the Paying Agent and Registrar unless the Company elects to make interest
payments by check mailed to the Holders at their address set forth in the register of Holders.


 


3. Paying Agent and Registrar.
Initially, U.S. Bank National Association (the “Trustee”) will act as a Paying Agent and Security Registrar.
The Company may change any Paying Agent or Security Registrar without notice to the Holders. The Company or any of its Subsidiaries
may act as Paying Agent or Security Registrar.


 


4. Indenture. This Note is one
of the series designated on the face hereof. This Note is one of a duly authorized issue of securities of the Company issued and
to be issued in one or more series under an Indenture, dated as of August 3, 2020 (the “Base Indenture”), between
the Company and the Trustee, as supplemented by the First Supplemental Indenture, dated as of August 3, 2020 (the “Supplemental
Indenture” and, together with the Base Indenture, as supplemented by the Supplemental Indenture, the “Indenture”).
This is one of an issue of Notes of the Company issued, or to be issued, under the Indenture. The terms of the Notes include those
stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939 (15 U.S. Code §§
77aaa-77bbbb), as amended from time to time (the “Trust Indenture Act”). The Notes are subject to all such terms,
and Holders are referred to the Indenture and the Trust Indenture Act for a statement of them. Capitalized and certain other terms
used herein and not otherwise defined have the meanings set forth in the Indenture.


 


5. Optional Redemption. The Notes
of this series are subject to redemption at any time or from time to time, prior to May 1, 2030, in whole or in part, at the Company’s
option at a Redemption Price equal to the greater of (i) 100% of the principal amount of the Notes to be redeemed, and (ii) as
determined by the Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and interest
in respect of the Notes to be redeemed (not including any interest accrued as of the Redemption Date) from the Redemption Date
through May 1, 2030, in each case discounted to the Redemption Date on a semi-annual basis (assuming a 360-day year consisting
of twelve 30-day months) at the Treasury Rate plus 30 basis points, plus accrued and unpaid interest on the Notes to be redeemed
to the Redemption Date. In addition, the Notes are subject to redemption at any time
or from time to time, in whole or in part, at the Company’s option, from and after
May 1, 2030, at a redemption price equal to 100% of the principal amount of the Notes
to be redeemed plus accrued and unpaid interest, if any, on such Notes to, but excluding, the Redemption Date.  The Company
may provide in such notice that payment of such price and performance of the Company’s obligations with respect to such redemption
or purchase may be performed by another Person. Any such notice may, at the Company’s discretion, be subject to the satisfaction
of one or more conditions precedent.


 


Any notice to holders of Notes of a redemption
pursuant to this paragraph 5 will include the appropriate calculation of the Redemption Price, but does not need to include the
Redemption Price itself. The actual Redemption Price, calculated as described above, will be set forth in an Officers’ Certificate
of the Company delivered to the Trustee no later than two Business Days prior to the Redemption Date.


 


6. Redemption Procedures. The
Trustee will select Notes called for redemption in part pursuant to paragraph 5 on a pro rata basis or on as nearly a pro
rata basis as is practicable (subject to procedures of the Depository); provided that Notes in principal amount of
$2,000 or less shall be redeemed in whole and not in part. A new Note in principal amount equal to the unredeemed portion
thereof will be issued in the name of the Holder thereof upon cancellation of the original Note, or in the case of Notes
represented by a Global Security, the outstanding principal amount of such Global Security will be reduced by book-entry.
Notes called for redemption pursuant to paragraph 5 become due on the Redemption Date. On and after the Redemption Date,
interest stops accruing on Notes or portions of them called for redemption (unless there is a default in the payment
thereof).


 






    	 	 	 



     


    

 


7. Notice of Redemption. Notices
of redemption pursuant to paragraph 5 shall be mailed by first class mail at least 10 but not more than 60 days before the Redemption
Date to each Holder of Notes to be redeemed at its registered address. If any Note is to be redeemed in part only, the notice of
redemption that relates to such Note shall state the portion of the principal amount thereof to be redeemed.


 


8. Change of Control. Upon the
occurrence of a Change of Control Triggering Event, unless all Notes have been called for redemption pursuant to paragraph 5, each
Holder of Notes of this series shall have the right to require the Company to repurchase all or any part (equal to $2,000 or an
integral multiple of $1,000 in excess thereof) of such Notes at an offer price in cash equal to the Change of Control Payment.
The Change of Control Offer will be made in accordance with the terms specified in the Indenture.


 


9. Denominations, Transfer, Exchange.
The Notes are in registered form without coupons in minimum denominations of $2,000 and integral multiples of $1,000 in excess
thereof. A Holder may transfer or exchange Notes in accordance with the Indenture. The Registrar may require a Holder, among other
things, to furnish appropriate endorsements and transfer documents and to pay to it any taxes and fees required by law or permitted
by the Indenture.


 


10. Persons Deemed Owners. The
registered Holder of this Note may be treated as the owner of this Note for all purposes.


 


11. Unclaimed Money. If money for
the payment of principal or interest remains unclaimed for two years, the Trustee or Paying Agent will pay the money back to the
Company at its written request. After that, Holders entitled to the money must look to the Company for payment as general creditors
unless an “abandoned property” law designates another Person.


 


12. Amendment, Waiver, Etc. The
Company and the Trustee (if a party thereto) may, without the consent of the Holders of any outstanding Notes, amend or waive the
Indenture or the Notes for certain specified purposes, including, among other things, curing ambiguities, defects or inconsistencies,
maintaining the qualification of the Indenture under the Trust Indenture Act, providing for the assumption by a successor to the
Company of its obligations under the Indenture and making any change that does not adversely affect the rights of any Holder in
any material respect. Other amendments of the Indenture or the Notes may be made by the Company and the Trustee with the consent
of the Holders of not less than a majority of the aggregate principal amount of the outstanding Notes, subject to certain exceptions
requiring the consent of the Holders of the particular Notes to be affected.


 


13. Successor Corporation. When
a successor corporation assumes all the obligations of its predecessor under the Notes and the Indenture and the transaction complies
with the terms of Article Six of the Supplemental Indenture, the predecessor corporation will, except as provided in Article
Six of the Supplemental Indenture, be released from those obligations.


 


14. Defaults and Remedies. Events
of Default are set forth in the Supplemental Indenture. Subject to certain limitations in the Indenture, if an Event of Default
(other than an Event of Default specified in Sections 5.01(e) and 5.01(f) of the Supplemental Indenture) occurs and
is continuing, then, and in each and every such case, either the Trustee, by notice in writing to the Company, or the Holders of
not less than 25% of the principal amount of the Notes then outstanding, by notice in writing to the Company and the Trustee, may,
and the Trustee at the request of such Holders shall, declare due and payable, if not already due and payable, the principal of
and any accrued and unpaid interest on all of the Notes; and upon any such declaration all such amounts upon such Notes shall become
and be immediately due and payable, anything in the Indenture or in the Notes to the contrary notwithstanding. If an Event of Default
specified in Sections 5.01(e) and 5.01(f) of the Supplemental Indenture occurs, then the principal of and any accrued
and unpaid interest on all of the Notes shall immediately become due and payable without any declaration or other act on the part
of the Trustee or any Holder. Holders may not enforce the Indenture or the Notes except as provided in the Indenture. The Trustee
may require indemnity satisfactory to it before it enforces the Indenture or the Notes. Subject to certain limitations, Holders
of a majority in principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or power, provided,
that the Trustee will be entitled to refuse to follow any such direction that conflicts with law or the Indenture or that the Trustee
determines in good faith is unduly prejudicial to the rights of other Holders or could, in reasonable likelihood, impose personal
liability upon the Trustee, unless the Trustee is offered indemnity satisfactory to it. The Trustee may withhold from Holders notice
of any continuing default (except a default in payment of principal, premium, if any, or interest on the Notes) if it determines
that withholding notice is in their best interests.


 


15. Trustee Dealings with
Company. Subject to certain limitations imposed by the Trust Indenture Act, the Trustee, in its individual or any other
capacity, may make loans to, accept deposits from, perform services for or otherwise deal with the Company or any Affiliate
thereof, with the same rights it would have as if it were not Trustee.


 






    	 	 	 



     


    

 


16. No Recourse Against Others.
No past, present or future director, officer, employee, incorporator, agent, member or stockholder or Affiliate of the Company,
as such, shall have any liability for any obligations of the Company under the Notes, the Indenture or for any claim based on,
in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases
all such liabilities. The waiver and release are part of the consideration for issuance of the Notes.


 


17. Discharge; Defeasance. The
Company’s obligations pursuant to the Indenture will be discharged, except for obligations pursuant to certain sections thereof,
subject to the terms of the Indenture, upon the payment of all the Notes or upon the irrevocable deposit with the Trustee of United
States dollars or Government Obligations sufficient to pay when due principal of and interest on the Notes to maturity or redemption.


 


The Indenture contains provisions for defeasance
at any time of (a) the entire indebtedness of the Company on this Note and (b) certain restrictive covenants and the related Events
of Default, upon compliance by the Company with certain conditions set forth therein, which provisions apply to this Note.


 


18. Guarantee. As more fully set
forth in the Base Indenture, the Company’s obligations under the Notes shall be guaranteed, under certain circumstances,
by certain Domestic Subsidiaries of the Company required to execute a supplemental indenture in accordance with Section 4.03
of the Supplemental Indenture.


 


19. Authentication. This Note shall
not be valid until the Trustee signs the certificate of authentication on the other side of this Security.


 


20. Governing Law. THIS NOTE SHALL
BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.


 


21. Abbreviations. Customary abbreviations
may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TENANT (= tenants by the entireties),
JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts
to Minors Act).


 


The Company will furnish to any Holder
upon written request and without charge a copy of the Indenture. Requests may be made to:


 


FLIR Systems, Inc.


27700 SW Parkway Avenue


Wilsonville, Oregon 97070


Attn: General Counsel


Tel: (503) 498-3547


Fax: (503) 498-3911


 






    	 	 	 



     


    







 


ASSIGNMENT


 


I or we assign and transfer this Note
to:


 







 



(Insert assignee’s social security
or tax I.D. number)


 


 



(Print or type name, address and zip code
of assignee)


 


and irrevocably appoint:


 


Agent to transfer this Note on the books
of the Company. The Agent may substitute another to act for him.


 


	Date: 		 
	 	 	 
	 	 	Your	 
	 	 	 	 
	 	 	Signature:	 
	 	 	 	 
	 	 	Sign
exactly as your name appears on the other side of this Note



	 	 	 	 
	Signature 		 	 
	Guarantee:		 	 



 


SIGNATURE GUARANTEE


 


Signatures must be guaranteed by an “eligible
guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation
in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program”
as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange
Act of 1934, as amended.


 






     


     


    







 



 


EXHIBIT B


 


FORM OF SUPPLEMENTAL INDENTURE


TO BE DELIVERED BY GUARANTORS


 






     


     


    

 


FORM OF SUPPLEMENTAL INDENTURE 


TO BE DELIVERED BY GUARANTORS 


 


THIS SUPPLEMENTAL INDENTURE, dated as of                     
(the “Supplemental Indenture”), between                                         
(the “Guarantor”), a subsidiary of FLIR Systems, Inc., a Delaware corporation (the “Company”),
and U.S. Bank National Association, a national banking association, as trustee (the “Trustee”).


 


RECITALS:


 


WHEREAS, the Company has executed and delivered to the Trustee
an Indenture, dated as of August 3, 2020 (as supplemented by the First Supplemental Indenture thereto, dated as of August 3, 2020
(the “First Supplemental Indenture”), the “Indenture”), providing for the issuance by the Company
of its 2.500% unsecured senior notes due 2030 (the “Securities”);


 


WHEREAS, the Indenture provides that, under certain circumstances,
the Guarantor shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guarantor shall unconditionally
guarantee all of the Company’s obligations under the Securities and the Indenture on the terms and conditions set forth herein;


 


WHEREAS, all things necessary to make this Supplemental Indenture
a valid agreement of the Guarantor and the Trustee, in accordance with its terms, and a valid amendment of, and supplement to,
the Indenture have been done;


 


NOW, THEREFORE, in consideration of the premises and the purchase
and acceptance of the Securities by the Holders thereof, the Guarantor covenants and agrees with the Trustee, for the equal and
ratable benefit of the Holders, that the Indenture is supplemented and amended, to the extent expressed herein as follows:


 


1. Generally.


 


(a) Capitalized terms used herein and not otherwise defined
shall have the respective meanings ascribed thereto in the Indenture.


 


(b) The rules of construction set forth in the Indenture shall
be applied hereto as if set forth in full herein.


 


2. Agreement to Guarantee.


 


(a) In accordance with the terms of Article Seven of
the First Supplemental Indenture, the Guarantor jointly and severally, with any other Guarantors, and fully and unconditionally
guarantees to each Holder of a Security authenticated and delivered by the Trustee and to the Trustee and its successors and assigns,
irrespective of the validity and enforceability of the Indenture, the Securities or the obligations of the Company hereunder or
thereunder, that:


 


(i) the principal of, premium, if any, and interest on the Securities
shall be promptly paid in full when due, whether at maturity, by acceleration, redemption or otherwise, and interest on the overdue
principal of, premium, if any, and interest on the Securities, if lawful (subject in all cases to any applicable grace period provided
in the Indenture), and all other obligations of the Company to the Holders or the Trustee under the Securities or under the Indenture,
including any obligations to repurchase Securities from the Holders, will be promptly paid in full or performed, all in accordance
with the terms hereof and thereof; and


 


(ii) in case of any extension of time of payment or renewal
of any Securities or any of such other obligations, the same will be promptly paid in full when due or performed in accordance
with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. Failing payment when
due of any amount so guaranteed or any performance so guaranteed for whatever reason, the Guarantor shall be jointly and severally
obligated to pay the same immediately. The Guarantor agrees that this is a guarantee of payment and not a guarantee of collection.


 


(b) The Guarantor hereby agrees that, to the maximum
extent permitted under applicable law, its obligations hereunder shall be unconditional, irrespective of the validity,
regularity or enforceability of the Securities or the Indenture, the absence of any action to enforce the same, any waiver or
consent by any Holder of the Securities with respect to any provisions hereof or thereof, the recovery of any judgment
against the Company, any action to enforce the same or any other circumstance that might otherwise constitute a legal or
equitable discharge or defense of the Guarantor.


 






     


     


    

 


(c) The Guarantor, subject to Section 5.07 of the
Indenture, hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or
bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever
and covenants that this Guarantee shall not be discharged except by complete performance of the obligations contained in the Securities
and the Indenture.


 


(d) The Guarantor agrees that if any Holder or the Trustee is
required by any court or otherwise to return to the Company, the Guarantors, or any custodian, trustee, liquidator or other similar
official acting in relation to any of the Company or the Guarantors, any amount paid by any of them to the Trustee or such Holder,
this Guarantee, to the extent theretofore discharged, shall be reinstated in full force and effect.


 


(e) The Guarantor agrees that it shall not be entitled to any
right of subrogation in relation to the Holders in respect of any obligations guaranteed hereby until payment in full of all obligations
guaranteed hereby.


 


(f) The Guarantor agrees that, as between the Guarantors, on
the one hand, and the Holders and the Trustee, on the other hand, (x) the maturity of the obligations guaranteed hereby may
be accelerated as provided in Article Five of the Indenture for the purposes of this Guarantee, notwithstanding any stay,
injunction or other prohibition preventing such acceleration in respect of the obligations guaranteed hereby, and (y) in the
event of any declaration of acceleration of such obligations as provided in Article Five of the Indenture, such obligations
(whether or not due and payable) shall forthwith become due and payable by the Guarantor for the purpose of this Guarantee.


 


(g) If the Guarantor makes a payment under its Guarantee, the
Guarantor shall have the right to seek contribution from any non-paying Guarantor, so long as the exercise of such right does not
impair the rights of the Holders under the Guarantee.


 


(h) The Guarantor confirms, pursuant to Section 7.02
of the First Supplemental Indenture, that the maximum aggregate amount guaranteed hereunder shall not exceed the maximum amount
that can be hereby guaranteed without rendering this Guarantee voidable under applicable law relating to fraudulent conveyance
or fraudulent transfer or similar laws affecting the rights of creditors generally.


 


3. Execution and Delivery. The Guarantor agrees that
the Guarantee shall remain in full force and effect notwithstanding any failure to endorse on each Security a notation of such
Guarantee.


 


4. Guarantor May Consolidate, etc., on Certain Terms.


 


(a) Except as set forth in Section 5 hereto, the Guarantor
agrees that it may not sell, lease, transfer, convey or otherwise dispose of all or substantially all of its assets to, or consolidate
with or merge with or into (whether or not the Guarantor is the surviving Person), another Person, other than the Company or another
Guarantor, unless (1) immediately after giving effect to that transaction, no Default or Event of Default exists and (2) the
Person acquiring the property in any such sale, lease, transfer, conveyance or other disposition or the Person formed by or surviving
any such consolidation or merger (if other than the Guarantor) is organized or existing under the laws of the United States of
America, any State thereof or the District of Columbia and assumes all the obligations of the Guarantor under the Indenture and
the Guarantee pursuant to a supplemental indenture satisfactory to the Trustee.


 


(b) In case of any such consolidation, merger, sale, lease,
transfer, conveyance or other disposition governed by Section 4(a)(2), above, upon the assumption by the successor
Person, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the Guarantee
endorsed upon the Securities and the due and punctual performance of all of the covenants and conditions to be performed by the
Guarantor pursuant to the Indenture, such successor Person shall succeed to and be substituted for the Guarantor with the same
effect as if it had been named herein as the Guarantor. Such successor Person thereupon may cause to be signed any or all of the
Guarantees to be endorsed upon all of the Securities issuable hereunder which theretofore shall not have been signed by the Company
and delivered to the Trustee. Any Guarantee so issued shall in all respects have the same legal rank and benefit under the Indenture
as the Guarantees theretofore and thereafter issued in accordance with the terms of the Indenture as though all of such Guarantees
had been issued at the date of the execution hereof.


 






     


     


    

 


5. Release.


 


(a) The Guarantor shall be automatically released and relieved
of any obligations under its Guarantee, (i) in connection with any sale or other disposition of all of the capital stock of
the Guarantor, or all or substantially all of the Guarantor’s assets, to a Person that is not (either before or after giving
effect to such transaction) the Company or a Domestic Subsidiary of the Company required to deliver a Guarantee under Section 4.03
of the First Supplemental Indenture; (ii) upon Legal Defeasance or Covenant Defeasance as permitted under the Indenture; or
(iii) upon release or discharge of all guarantees by the Guarantor of all other indebtedness of the Company, except a discharge
or release by or as a result of payment under such guarantees of other indebtedness of the Company.


 


(b) Upon delivery by the Company to the Trustee of an Officers’
Certificate to the effect that one of the foregoing requirements has been satisfied and the conditions to the release of the Guarantor
under this Section 5 have been met, the Trustee shall execute any documents reasonably required in order to evidence
the release of the Guarantor from its obligations under its Guarantee. If the Guarantor is not released from its obligations under
the Guarantee, the Guarantor shall remain liable for the full amount of principal of, premium, if any, and interest on the Securities
and for any other obligations of the Company as provided in Article Seven of the First Supplemental Indenture.


 


6. No Recourse Against Others. Pursuant to Section 1.14
of the Indenture, no director, officer, employee, incorporator, stockholder, member, manager or partner of the Guarantor shall
have any liability for any obligations of the Guarantor under the Securities, the Indenture, the Guarantee or for any claim based
on, in respect of, or by reason of, such obligations or their creation.


 


7. Trustee Not Responsible for Recitals. The recitals
contained herein shall be taken as the statements of the Guarantor, and the Trustee assumes no responsibility for the correctness
of the same. The Trustee makes no representations as to the validity or sufficiency of this Supplemental Indenture or of the Securities.


 


8. Headings, etc. The headings of Sections of this Supplemental
Indenture have been inserted for convenience of reference only, are not to be considered a part hereof and shall in no way modify
or restrict any of the terms or provisions hereof.


 


9. Multiple Counterparts. The parties may sign multiple
counterparts of this Supplemental Indenture. Each signed copy shall be deemed an original, but all of them together represent one
and the same agreement.


 


10. Governing Law. THIS SUPPLEMENTAL INDENTURE AND THE
SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.


 


[Signature Page Follows] 


 






     


     


    

 


IN WITNESS WHEREOF, the parties have caused this Supplemental
Indenture to be duly executed all as of the date and year first written above.


 


	 	[GUARANTOR]
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 
	 	U.S. BANK NATIONAL ASSOCIATION
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title: