Exhibit 10.1

EXECUTION VERSION

BRUKER CORPORATION

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FIRST AMENDMENT

Dated as of April 17, 2020

to the

NOTE PURCHASE AGREEMENT

Dated as of January 18, 2012

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RE:      $105,000,000 4.31% Series 2012A Senior Notes, Tranche C, due January
18, 2022

            $100,000,000 4.46% Series 2012A Senior Notes, Tranche D, due January
18, 2024

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FIRST AMENDMENT TO THE NOTE PURCHASE AGREEMENT

THIS FIRST AMENDMENT dated as of April 17, 2020 and effective as of March 25,
2020 (the or this “First Amendment”) to the Note Purchase Agreement dated as of
January 18, 2012 is between Bruker Corporation, a Delaware corporation (the
“Company”) and each of the institutions which is a signatory to this First
Amendment (collectively, the “Noteholders”).

RECITALS:

A.      The Company and each of the Noteholders have heretofore entered into the
Note Purchase Agreement dated as of January 18, 2012 (the “Note Purchase
Agreement”).  The Company has heretofore issued (i) $20,000,000 aggregate
principal amount of its 3.16% Series 2012A Senior Notes, Tranche A, due January
18, 2017 (the “Series A Notes”), (ii) $15,000,000 aggregate principal amount of
its 3.74% Series 2012A Senior Notes, Tranche B, due January 18, 2019 (the
“Series B Notes”), (iii)  $105,000,000 aggregate principal amount of its 4.31%
Series 2012A Senior Notes, Tranche C, due January 17, 2022 (the “Series C
Notes”) and (iv) $100,000,000 aggregate principal amount of its 4.46% Series
2012A Senior Notes, Tranche D, due January 18, 2024 (the “Series D Notes”),
collectively with the Series C Notes, the “Notes”).  The Series A Notes and
Series B Notes are no longer outstanding.

B.     The Company and the Noteholders now desire to amend the Note Purchase
Agreement in the respects, but only in the respects, hereinafter set forth.

C.     Capitalized terms used herein shall have the respective meanings ascribed
thereto in the Note Purchase Agreement unless herein defined or the context
shall otherwise require.

D.      All requirements of law have been fully complied with and all other acts
and things necessary to make this First Amendment a valid, legal and binding
instrument according to its terms for the purposes herein expressed have been
done or performed.

NOW, THEREFORE, upon the full and complete satisfaction of the conditions
precedent to the effectiveness of this First Amendment set forth in Section 3.1
hereof, and in consideration of good and valuable consideration the receipt and
sufficiency of which is hereby acknowledged, the Company and the Noteholders do
hereby agree as follows:

SECTION 1.       AMENDMENTS.

Section 1.1.      Section 22.6 of the Note Purchase Agreement shall be amended
by adding the following language to the end of such Section:

“The parties agree to electronic contracting and signatures with respect to this
Agreement and the other Note Documents (other than the Notes).  Delivery of an
electronic signature to, or a signed copy of, this Agreement and such other Note
Documents (other than the Notes) by facsimile, email or other electronic
transmission shall be fully binding on the parties to the same extent as the
delivery of the signed

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FIRST AMENDMENT

BRUKER CORPORATION

originals and shall be admissible into evidence for all purposes.  The words
“execution,” “execute”, “signed,” “signature,” and words of like import in or
related to any document to be signed in connection with this Agreement and the
other Note Documents (other than the Notes) shall be deemed to include
electronic signatures, the electronic matching of assignment terms and contract
formations on electronic platforms approved by the Company, or the keeping of
records in electronic form, each of which shall be of the same legal effect,
validity or enforceability as a manually executed signature or the use of a
paper-based recordkeeping system, as the case may be, to the extent and as
provided for in any applicable law, including the Federal Electronic Signatures
in Global and National Commerce Act, the New York State Electronic Signatures
and Records Act, or any other similar state laws based on the Uniform Electronic
Transactions Act.”

Section 1.2.      The first sentence of the definition “Indebtedness” in
Schedule A to the Note Purchase Agreement shall be and is hereby amended by
deleting the following proviso from the first sentence therein:

“provided, however, ‘Indebtedness’ shall not include any deposits received by
any customer in connection with any sales orders” in the first sentence of the
definition.”

Section 1.3.      The following definitions in Schedule A to the Note Purchase
Agreement are hereby amended and restated to read as follows:

“Bank Credit Agreement” means that certain Credit Agreement dated as of
December 11, 2019 by and between the Company, Bruker Invest AG, incorporated in
Switzerland as a corporation limited by shares, Bruker Finance B.V., a besloten
vennootschap met beperkte aansprakelijkheid incorporated under the laws of the
Netherlands having its corporate seat (statutaire zetel) in Amsterdam, the
Netherlands, Bank of America, N.A., as administrative agent, and the other
financial institutions party thereto and any renewals, extensions or
replacements thereof, which constitute the primary bank credit facility or
facilities of the Company and its Subsidiaries.

“Consolidated Total Indebtedness” means at any time the sum, without
duplication, of (a) the aggregate Indebtedness of the Company and its
Subsidiaries calculated on a consolidated basis as of such time in accordance
with GAAP (excluding the aggregate amount of Indebtedness of the Company and its
Subsidiaries relating to the undrawn letters of credit outstanding) and (b)
Indebtedness of the type referred to in clause (a) hereof of another Person
guaranteed by the Company or any of its Subsidiaries.

“Priority Debt” means (without duplication), as of the date of any determination
thereof, the sum of (i) all unsecured Indebtedness of Subsidiaries (including
all Guarantees of Indebtedness but excluding (w) the aggregate amount of
Indebtedness of Subsidiaries related to letters of credit or similar instruments
outstanding that evidence obligations related to customer deposits received in
the ordinary course of business, in each case, to the extent such instruments
remain undrawn and are for the benefit of such customers in respect of such
customer deposits, (x) Indebtedness owing to the Company

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FIRST AMENDMENT

BRUKER CORPORATION

or any other Subsidiary, (y) Indebtedness outstanding at the time such Person
became a Subsidiary, provided that such Indebtedness shall have not been
incurred in contemplation of such person becoming a Subsidiary, and
(z) Indebtedness of any Subsidiary Guarantor, and (ii) all Indebtedness of the
Company and its Subsidiaries secured by Liens other than Indebtedness secured by
Liens permitted by subparagraphs (a) through (j), inclusive, of Section 10.4.
 For the avoidance of doubt, except as set forth in the preceding sentence, all
Indebtedness of Affected Foreign Subsidiaries shall constitute “Priority Debt”
for purposes of this Agreement.

Section 1.4.      The following shall be added as new definition in alphabetical
order to  Schedule A of the Note Purchase Agreement:

“Note Documents” means this Agreement, the Notes, any Subsidiary Guaranty and
all other documents, certificates, instruments or agreements executed and
delivered by the Company or any Subsidiary Guarantor for the benefit of a holder
of a Note in connection herewith on or after the date hereof.

SECTION 2.       REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

Section 2.1.      To induce the Noteholders to execute and deliver this First
Amendment (which representations shall survive the execution and delivery of
this First Amendment), the Company represents and warrants to the Noteholders
that:

(a)       this First Amendment has been duly authorized, executed and delivered
by the Company and this First Amendment constitutes the legal, valid and binding
obligation, contract and agreement of the Company enforceable against it in
accordance with its terms, except as enforcement may be limited by bankruptcy,
insolvency, reorganization, moratorium or similar laws or equitable principles
relating to or limiting creditors’ rights generally;

(b)       the Note Purchase Agreement, as amended by this First Amendment,
constitutes the legal, valid and binding obligation, contract and agreement of
the Company enforceable against it in accordance with its terms, except as
enforcement may be limited by bankruptcy, insolvency, reorganization, moratorium
or similar laws or equitable principles relating to or limiting creditors’
rights generally;

(c)       the execution, delivery and performance by the Company of this First
Amendment (i) has been duly authorized by all requisite corporate action and, if
required, shareholder action, (ii) does not require the consent or approval of
any governmental or regulatory body or agency and (iii) will not (A) violate
(1) any provision of law, statute, rule or regulation or the Company’s
certificate of incorporation or bylaws, (2) any order of any court or any rule,
regulation or order of any other agency or government binding upon the Company
or (3) any provision of any material indenture, agreement or other instrument to
which the Company is a party or by which its properties or assets are or may be
bound, including, without limitation, the Bank Credit Agreement (as defined in
the Note Purchase Agreement (as amended by this First Amendment)), or (B) result
in a

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FIRST AMENDMENT

BRUKER CORPORATION

breach or constitute (alone or with due notice or lapse of time or both) a
default under any material indenture, agreement or other instrument referred to
in clause (iii)(A)(3) of this Section 2.1(c);

(d)       as of the date hereof and after giving effect to this First Amendment,
no Default or Event of Default has occurred which is continuing;

(e)       neither the Company nor any of its Affiliates has paid or agreed to
pay any fees or other consideration, or given any additional security or
collateral, or shortened the maturity or average life of any Indebtedness or
permanently reduced any borrowing capacity, in each case, in favor of or for the
benefit of any creditor of the Company, any Subsidiary or any Affiliate, in
connection with the changes contemplated by or similar in nature to the changes
in this First Amendment; and

(f)       all the representations and warranties contained in Section 5 of the
Note Purchase Agreement are true and correct in all material respects with the
same force and effect as if made by the Company on and as of the date hereof.

SECTION 3.       CONDITIONS TO EFFECTIVENESS OF THIS FIRST AMENDMENT.

Section 3.1.      This First Amendment shall not become effective until, and
shall become effective when, each and every one of the following conditions
shall have been satisfied:

(a)       executed counterparts of this First Amendment, duly executed by the
Company, the Subsidiary Guarantors and the holders of at least 51% of the
outstanding principal of the Notes, shall have been delivered to the
Noteholders;

(b)       [Reserved];

(c)       the Noteholders shall have received evidence satisfactory to them that
the Note Purchase Agreement dated as of December 11, 2019 has been amended
substantially as proposed in the form annexed hereto as Exhibit A ;

(d)       the Noteholders shall have received a copy of the resolutions of the
Board of Directors of the Company authorizing the execution, delivery and
performance by the Company of this First Amendment, certified by its Secretary
or an Assistant Secretary;

(e)       the representations and warranties of the Company set forth in
Section 2 hereof are true and correct in all material respects on and as of the
date hereof; and

(f)       the reasonable and documented fees and expenses of Chapman and Cutler,
LLP, counsel to the Noteholders, in connection with the negotiation,
preparation, approval, execution and delivery of this First Amendment, to the
extent invoiced, shall have been paid by the Company.

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FIRST AMENDMENT

BRUKER CORPORATION

SECTION 4.       MISCELLANEOUS.

Section 4.1.      This First Amendment shall be construed in connection with and
as part of the Note Purchase Agreement, and except as modified and expressly
amended by this First Amendment, all terms, conditions and covenants contained
in the Note Purchase Agreement and the Notes are hereby ratified and shall be
and remain in full force and effect.

Section 4.2.      Any and all notices, requests, certificates and other
instruments executed and delivered after the execution and delivery of this
First Amendment may refer to the Note Purchase Agreement without making specific
reference to this First Amendment but nevertheless all such references shall
include this First Amendment unless the context otherwise requires.

Section 4.3.      The descriptive headings of the various Sections or parts of
this First Amendment are for convenience only and shall not affect the meaning
or construction of any of the provisions hereof.

Section 4.4.      This First Amendment shall be governed by and construed in
accordance with New York law.

Section 4.5.     Each Subsidiary Guarantor acknowledges that its consent to this
First Amendment is not required, but each Subsidiary Guarantor nevertheless
hereby agrees and consents to this First Amendment and to the documents and
agreements referred to herein.  Each Subsidiary Guarantor agrees and
acknowledges that (i) notwithstanding the effectiveness of this First Amendment,
each Subsidiary Guaranty (as the same may be amended, amended and restated,
supplemented or otherwise modified from time to time) shall remain in full force
and effect without modification thereto, and (ii) nothing herein shall in any
way limit any of the terms or provisions of each Subsidiary Guaranty executed by
any Subsidiary Guarantor, all of which are hereby ratified, confirmed and
affirmed in all respects.  Each Subsidiary Guarantor hereby agrees and
acknowledges that no other agreement, instrument, consent or document shall be
required to give effect to this section.  Each Subsidiary Guarantor hereby
further acknowledges that the Company may from time to time enter into any
further amendments, modifications, terminations and/or waivers of any provisions
of the Note Purchase Agreement without notice to or consent from any Subsidiary
Guarantor and without affecting the validity or enforceability of any Subsidiary
Guaranty giving rise to any reduction, limitation, impairment, discharge or
termination of any Subsidiary Guaranty.

Section 4.6.      This First Amendment may be executed in one or more
counterparts, each of which shall be deemed an original but all of which
together shall constitute one and the same instrument.  The execution hereof by
the Company shall constitute a contract between the Company and the Noteholders
for the uses and purposes hereinabove set forth, and this First Amendment may be
executed in any number of counterparts, each executed counterpart constituting
an original, but all together only one agreement.  Delivery of this First
Amendment by facsimile, electronic mail or other electronic transmission shall
be effective as delivery of a manually executed counterpart hereof.  The parties
agree to electronic contracting and signatures with respect to this First
Amendment.  Delivery of an electronic signature to, or a signed copy of, this
First Amendment by facsimile, email or other electronic transmission shall be
fully binding

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FIRST AMENDMENT

BRUKER CORPORATION

on the parties to the same extent as the delivery of the signed originals and
shall be admissible into evidence for all purposes.  The words “execution,”
“execute”, “signed,” “signature,” and words of like import in or related to any
document to be signed in connection with this First Amendment shall be deemed to
include electronic signatures, the electronic matching of assignment terms and
contract formations on electronic platforms approved by the Company, or the
keeping of records in electronic form, each of which shall be of the same legal
effect, validity or enforceability as a manually executed signature or the use
of a paper-based recordkeeping system, as the case may be, to the extent and as
provided for in any applicable law, including the Federal Electronic Signatures
in Global and National Commerce Act, the New York State Electronic Signatures
and Records Act, or any other similar state laws based on the Uniform Electronic
Transactions Act.

[Remainder of Page Left Intentionally Blank]

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FIRST AMENDMENT

BRUKER CORPORATION

The foregoing First Amendment  is hereby acknowledged and agreed as of the date
first above written

BRUKER CORPORATION

By

Name

Title

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

ACKNOWLEDGED:

BRUKER BIOSPIN CORPORATION

By:

Name:

Title:

BRUKER AXS HOLDINGS, INC. F/K/A BRUKER AXS LLC

By:

Name:

Title:

BRUKER SCIENTIFIC LLC

By:

Name:

Title:

BRUKER NANO, INC.

By:

Name:

Title:

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY

By

Name:

Its Authorized Representative

We acknowledge that we hold $37,000,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

We acknowledge that we hold $33,000,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

NEW YORK LIFE INSURANCE COMPANY

By

Name:

Title:

We acknowledge that we hold $8,700,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

We acknowledge that we hold $8,700,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

NEW YORK LIFE INSURANCE AND ANNUITY CORPORATION

By: NYL Investors LLC, its Investment Manager

By

Name:

Title:

We acknowledge that we hold $7,100,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

We acknowledge that we hold $7,100,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

NEW YORK LIFE INSURANCE AND ANNUITY CORPORATION INSTITUTIONALLY OWNED LIFE
INSURANCE SEPARATE ACCOUNT (BOLI 30C)

By: NYL Investors LLC, its Investment Manager

By

Name:

Title:

We acknowledge that we hold $1,000,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

We acknowledge that we hold $1,000,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

NEW YORK LIFE INSURANCE AND ANNUITY CORPORATION INSTITUTIONALLY OWNED LIFE
INSURANCE SEPARATE ACCOUNT (BOLI 3-2)

By: NYL Investors LLC, its Investment Manager

By

Name:

Title:

We acknowledge that we hold $200,000 4.31% Series 2012A Senior Notes, Tranche C,
due January 18, 2022.

We acknowledge that we hold $200,000 4.46% Series 2012A Senior Notes, Tranche D,
due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

ALLIANZ LIFE INSURANCE COMPANY OF NORTH AMERICA

By

Name:

Title:

We acknowledge that we hold $25,000,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

MASSACHUSETTS MUTUAL LIFE INSURANCE COMPANY

By: Barings LLC as Investment Adviser

By

Name:

Title:

We acknowledge that we hold $11,100,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

We acknowledge that we hold $11,300,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

C.M. LIFE INSURANCE COMPANY

By: Barings LLC as Investment Adviser

By

Name:

Title:

We acknowledge that we hold $900,000 4.31% Series 2012A Senior Notes, Tranche C,
due January 18, 2022.

We acknowledge that we hold $1,200,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

YF LIFE INSURANCE INTERNATIONAL LIMITED

By: Barings LLC as Investment Adviser

By

Name:

Title:

We acknowledge that we hold $500,000 4.46% Series 2012A Senior Notes, Tranche D,
due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

PACIFIC LIFE INSURANCE COMPANY
(NOMINEE: MAC & CO)

By

Name:

Title:

By

Name:

Title:

We acknowledge that we hold $17,000,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

GENWORTH LIFE AND ANNUITY INSURANCE COMPANY

By

Name:

Title:

We acknowledge that we hold $6,000,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

MODERN WOODMEN OF AMERICA

By

Name:

Title:

We acknowledge that we hold $15,000,000 4.31% Series 2012A Senior Notes, Tranche
C, due January 18, 2022.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

PIONEER SECURITY LIFE INSURANCE COMPANY

INDUSTRIAL ALLIANCE INSURANCE AND FINANCIAL SERVICES, INC.

FARM BUREAU LIFE INSURANCE COMPANY OF MICHIGAN

AMERICAN REPUBLIC INSURANCE COMPANY

FARM BUREAU GENERAL INSURANCE COMPANY OF MICHIGAN

AMERICAN-AMICABLE LIFE INSURANCE COMPANY OF TEXAS

FARM BUREAU MUTUAL INSURANCE COMPANY OF MICHIGAN

TRUSTMARK INSURANCE COMPANY

OCCIDENTAL LIFE INSURANCE COMPANY OF NORTH CAROLINA

BLUE CROSS AND BLUE SHIELD OF FLORIDA, INC.

IA AMERICAN LIFE INSURANCE COMPANY

CATHOLIC UNITED FINANCIAL

By: Securian Asset Management, Inc.

By

Name:

Title:

We acknowledge that Pioneer Security Life Insurance Company holds $200,000 4.31%
Series 2012A Senior Notes, Tranche C, due January 18, 2022.

We acknowledge that Industrial Alliance Insurance and Financial Services, Inc.
holds $800,000 4.31% Series 2012A Senior Notes, Tranche C, due January 18, 2022.

We acknowledge that Farm Bureau Life Insurance Company of Michigan holds
$2,275,000 4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that American Republic Insurance Company holds $1,520,000 4.46%
Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that Farm Bureau General Insurance Company of Michigan holds
$760,000 4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that American-Amicable Life Insurance Company of Texas holds
$760,000 4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that Farm Bureau Mutual Insurance Company of Michigan holds
$760,000 4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

We acknowledge that Trustmark Insurance Company holds $760,000 4.46% Series
2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that Occidental Life Insurance Company of North Carolina holds
$380,000 4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that Blue Cross and Blue Shield of Florida, Inc. holds $760,000
4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that IA American Life Insurance Company holds $225,000 4.46%
Series 2012A Senior Notes, Tranche D, due January 18, 2024.

We acknowledge that Catholic United Financial holds $760,000 4.46% Series 2012A
Senior Notes, Tranche D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

VANTIS LIFE INSURANCE COMPANY

By

Name:

Title:

We acknowledge that we hold $1,520,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

MTL INSURANCE COMPANY

By

Name:

Title:

We acknowledge that we hold $1,140,000 4.46% Series 2012A Senior Notes, Tranche
D, due January 18, 2024.

[2012 Amendment]

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FIRST AMENDMENT

BRUKER CORPORATION

Accepted as of the date first written above.

EQUITABLE LIFE & CASUALTY INSURANCE COMPANY

By

Name:

Title:

We acknowledge that we hold $380,000 4.46% Series 2012A Senior Notes, Tranche D,
due January 18, 2024.

[2012 Amendment]

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EXHIBIT A

[See Attached]

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