SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934 (Amendment No. 1)

K2M Group Holdings, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

________48273J107_________

(CUSIP Number)

David Goldman

GAMCO Investors, Inc.

One Corporate Center

Rye, New York 10580-1435

(914) 921-5000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

______________________ November 8, 2018________________________

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box .

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) Gabelli Funds, LLC I.D. No. 13-4044523
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) 00-Funds of investment advisory clients
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization New York
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power 1,617,060 (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power 1,617,060 (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person 1,617,060 (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS)
13	Percent of class represented by amount in row (11) 3.70%
14	Type of reporting person (SEE INSTRUCTIONS) IA, CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) GAMCO Asset Management Inc. I.D. No. 13-4044521
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) 00-Funds of investment advisory clients
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization New York
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power 599,915 (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power 652,915 (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person 652,915 (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS)
13	Percent of class represented by amount in row (11) 1.49%
14	Type of reporting person (SEE INSTRUCTIONS) IA, CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) Teton Advisors, Inc. I.D. No. 13-4008049
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) 00 – Funds of investment advisory clients
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization Delaware
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power 44,000 (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power 44,000 (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person 44,000 (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS)
13	Percent of class represented by amount in row (11) 0.10%
14	Type of reporting person (SEE INSTRUCTIONS) IA, CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) Gabelli & Company Investment Advisers, Inc. I.D. No. 13-3379374
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) 00 – Client funds
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization Delaware
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power 634,592 (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power 634,592 (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person 634,592 (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS)
13	Percent of class represented by amount in row (11) 1.45%
14	Type of reporting person (SEE INSTRUCTIONS) HC, CO, IA

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) MJG Associates, Inc. I.D. No. 06-1304269
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) 00-Client Funds
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization Connecticut
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power 44,000 (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power 44,000 (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person 44,000 (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS)
13	Percent of class represented by amount in row (11) 0.10%
14	Type of reporting person (SEE INSTRUCTIONS) CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) GGCP, Inc. I.D. No. 13-3056041
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) None
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization Wyoming
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power None (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power None (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person None (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS) X
13	Percent of class represented by amount in row (11) 0.00%
14	Type of reporting person (SEE INSTRUCTIONS) HC, CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) GAMCO Investors, Inc. I.D. No. 13-4007862
	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) None
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization Delaware
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power None (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power None (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person None (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS) X
13	Percent of class represented by amount in row (11) 0.00%
14	Type of reporting person (SEE INSTRUCTIONS) HC, CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) Associated Capital Group, Inc. I.D. No. 47-3965991
	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) WC
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization Delaware
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power 14,800 (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power 14,800 (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person 14,800 (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS) X
13	Percent of class represented by amount in row (11) 0.03%
14	Type of reporting person (SEE INSTRUCTIONS) HC, CO

CUSIP No. 48273J107

1	Names of reporting persons I.R.S. identification nos. of above persons (entities only) Mario J. Gabelli
2	Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a) (b)
3	Sec use only
4	Source of funds (SEE INSTRUCTIONS) None
5	Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
6	Citizenship or place of organization USA
Number Of Shares Beneficially Owned By Each Reporting Person With		: 7 : : :	Sole voting power None (Item 5)
		: 8 : : :	Shared voting power None
		: 9 : : :	Sole dispositive power None (Item 5)
		:10 : : :	Shared dispositive power None
11	Aggregate amount beneficially owned by each reporting person None (Item 5)
12	Check box if the aggregate amount in row (11) excludes certain shares (SEE INSTRUCTIONS) X
13	Percent of class represented by amount in row (11) 0.00%
14	Type of reporting person (SEE INSTRUCTIONS) IN

Item 1. Security and Issuer

This Amendment No. 1 to Schedule 13D on the Common Stock of K2M Group Holdings, Inc., (the "Issuer") is being filed on behalf of the undersigned to amend the Schedule 13D, as amended (the "Schedule 13D") which was originally filed on October 4, 2018. Unless otherwise indicated, all capitalized terms used herein but not defined shall have the same meanings as set forth in Schedule 13D.

Item 2. Identity and Background

Item 2 to Schedule 13D is amended, in pertinent part, as follows:

This statement is being filed by Mario J. Gabelli ("Mario Gabelli") and various entities which he

directly or indirectly controls or for which he acts as chief investment officer. These entities, except for LICT Corporation ("LICT), CIBL, Inc. ("CIBL") and ICTC Group, Inc. ("ICTC"), engage in various aspects of the securities business, primarily as investment adviser to various institutional and individual clients, including registered investment companies and pension plans, and as general partner or the equivalent of various private investment partnerships or private funds. Certain of these entities may also make investments for their own accounts.

The foregoing persons in the aggregate often own beneficially more than 5% of a class of equity securities of a particular issuer. Although several of the foregoing persons are treated as institutional investors for purposes of reporting their beneficial ownership on the short-form Schedule 13G, the holdings of those who do not qualify as institutional investors may exceed the 1% threshold presented for filing on Schedule 13G or implementation of their investment philosophy may from time to time require action which could be viewed as not completely passive. In order to avoid any question as to whether their beneficial ownership is being reported on the proper form and in order to provide greater investment flexibility and administrative uniformity, these persons have decided to file their beneficial ownership reports on the more detailed Schedule 13D form rather than on the short-form Schedule 13G and thereby to provide more expansive disclosure than may be necessary.

(a), (b) and (c) - This statement is being filed by one or more of the following persons: GGCP, Inc. ("GGCP"), GGCP Holdings LLC ("GGCP Holdings"), GAMCO Investors, Inc. ("GBL"), Associated Capital Group, Inc. ("AC"), Gabelli Funds, LLC ("Gabelli Funds"), GAMCO Asset Management Inc. ("GAMCO"), Teton Advisors, Inc. ("Teton Advisors"), Gabelli & Company Investment Advisers, Inc. ("GCIA"), G.research, LLC ("G.research"), MJG Associates, Inc. ("MJG Associates"), Gabelli Foundation, Inc. ("Foundation"), Mario Gabelli, LICT, CIBL and ICTC. Those of the foregoing persons signing this Schedule 13D are hereinafter referred to as the "Reporting Persons".

GGCP makes investments for its own account and is the manager and a member of GGCP Holdings which is the controlling shareholder of GBL and AC. GBL, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those named below. AC, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those listed below.

GAMCO, a wholly-owned subsidiary of GBL, is an investment adviser registered under the Investment Advisers Act of 1940, as amended ("Advisers Act"). GAMCO is an investment manager providing discretionary managed account services for employee benefit plans, private investors, endowments, foundations and others.

GCIA, a wholly owned subsidiary of AC, is an investment adviser registered under the Advisers Act and serves as a general partner or investment manager to limited partnerships and offshore investment companies and other accounts. As a part of its business, GCIA may purchase or sell securities for its own account. GCIA is a general partner or investment manager of a number of funds or partnerships, including Gabelli Associates Fund, L.P., Gabelli Associates Fund II, L.P., Gabelli Associates Limited, Gabelli Associates Limited II E, ALCE Partners, L.P., Gabelli Capital Structure Arbitrage Fund LP, Gabelli Capital Structure Arbitrage Fund Limited, Gabelli Intermediate Credit Fund L.P., GAMA Select Energy + L.P., GAMCO Medical Opportunities L.P., and Gabelli Multimedia Partners, L.P.

G.research, a wholly owned subsidiary of GCIA, is a broker-dealer registered under the Securities Exchange Act of 1934, as amended ("1934 Act"), which as a part of its business regularly purchases and sells securities for its own account.

Gabelli Funds, a wholly owned subsidiary of GBL, is a limited liability company. Gabelli Funds is an investment adviser registered under the Advisers Act which provides advisory services for The Gabelli Equity Trust Inc., The Gabelli Asset Fund, The GAMCO Growth Fund, The Gabelli Convertible and Income Securities Fund Inc., The Gabelli Value 25 Fund Inc., The Gabelli Small Cap Growth Fund, The Gabelli Equity Income Fund, The Gabelli ABC Fund, The GAMCO Global Content & Connectivity Fund, The Gabelli Gold Fund, Inc., The Gabelli Multimedia Trust Inc., The Gabelli Global Rising Income & Dividend Fund, The Gabelli Capital Asset Fund, The GAMCO International Growth Fund, Inc., The GAMCO Global Growth Fund, The Gabelli Utility Trust, The Gabelli Utilities Fund, The Gabelli Dividend Growth Fund, The Gabelli Focus Five Fund, The Comstock Capital Value Fund, The Gabelli Dividend and Income Trust, The Gabelli Global Utility & Income Trust, The GAMCO Global Gold, Natural Resources, & Income Trust, The GAMCO Natural Resources Gold & Income Trust, The GDL Fund, Gabelli Enterprise Mergers & Acquisitions Fund, The Gabelli ESG Fund, Inc., The Gabelli International Small Cap Fund, The Gabelli Healthcare & Wellness ^Rx Trust, The Gabelli Global Small and Mid Cap Value Trust, Gabelli Value Plus+ Trust, Gabelli Merger Plus+ Trust Plc, The Gabelli Global Financial Services Fund, The Gabelli Global Mini Mites Fund, The Gabelli Go Anywhere Trust, The Gabelli U.S. Treasury Money Market Fund, Bancroft Fund Ltd. and Ellsworth Growth & Income Fund Ltd. (collectively, the "Funds"), which are registered investment companies. Gabelli Funds is also the investment adviser to the Gabelli Media Mogul NextShares^TM, the Gabelli Food of All Nations NextShares^TM, the RBI NextShares^TM, and the Gabelli Pet Parents' Fund NextShares^TM, and The GAMCO International SICAV (sub-funds GAMCO Merger Arbitrage and GAMCO All Cap Value), a UCITS III vehicle.

Teton Advisors, an investment adviser registered under the Advisers Act, provides discretionary advisory services to The TETON Westwood Mighty Mites^sm Fund, The TETON Westwood Income Fund, The TETON Westwood SmallCap Equity Fund, TETON Westwood Intermediate Bond Fund, and The TETON Westwood Mid-Cap Equity Fund.

MJG Associates provides advisory services to private investment partnerships and offshore funds. Mario Gabelli is the sole shareholder, director and employee of MJG Associates. MJG Associates is the Investment Manager of Gabelli International Limited and Gabelli Fund, LDC. Mario J. Gabelli is the general partner of Gabelli Performance Partnership, LP.

The Foundation is a private foundation. Mario Gabelli is the Chairman, a Trustee and the Investment Manager of the Foundation. Elisa M. Wilson is the President of the Foundation.

LICT is a holding company with operating subsidiaries engaged primarily in the rural telephone industry. LICT actively pursues new business ventures and acquisitions. LICT makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is the Chief Executive Officer, a director, and substantial shareholder of LICT.

ICTC is a holding company with subsidiaries in voice, broadband and other telecommunications services, primarily in the rural telephone industry. ICTC makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of ICTC.

CIBL is a holding company with interests in telecommunications operations, primarily in the rural telephone industry. CIBL actively pursues new business ventures and acquisitions. CIBL makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of CIBL.

Mario Gabelli is the controlling stockholder, Chief Executive Officer and a director of GGCP and Chairman and Chief Executive Officer of GBL. He is the Executive Chairman of AC. Mario Gabelli is also a member of GGCP Holdings. Mario Gabelli is the controlling shareholder of Teton.

The Reporting Persons do not admit that they constitute a group.

GAMCO is a New York corporation and GBL, AC, GCIA, and Teton Advisors are Delaware corporations, each having its principal business office at One Corporate Center, Rye, New York 10580. GGCP is a Wyoming corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830. GGCP Holdings is a Delaware limited liability corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830. G.research is a Delaware limited liability company having its principal officers at One Corporate Center, Rye, New York 10580. Gabelli Funds is a New York limited liability company having its principal business office at One Corporate Center, Rye, New York 10580. MJG Associates is a Connecticut corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830. The Foundation is a Nevada corporation having its principal offices at 165 West Liberty Street, Reno, Nevada 89501. LICT is a Delaware corporation having its principal place of business as 401 Theodore Fremd Avenue, Rye, New York 10580. CIBL, Inc. is a Delaware corporation having its principal place of business as 165 West Liberty Street, Suite 220, Reno, NV 89501. ICTC Group Inc. is a Delaware corporation having its principal place of business as 556 Main Street, Nome, North Dakota 58062.

For information required by instruction C to Schedule 13D with respect to the executive officers and directors of the foregoing entities and other related persons (collectively, "Covered Persons"), reference is made to Schedule I annexed hereto and incorporated herein by reference.

(d) – Not applicable.

(e) – Not applicable.

(f) – Reference is made to Schedule I hereto.

Item 3. Source and Amount of Funds or Other Consideration

Item 3 to Schedule 13D is amended, in pertinent part, as follows:

The Reporting Persons used an aggregate of approximately $15,187,758 to purchase the additional Securities reported as beneficially owned in Item 5 since the most recent filing on Schedule 13D. GAMCO and Gabelli Funds used approximately $1,251,027 and $7,853,504, respectively, of funds that were provided through the accounts of certain of their investment advisory clients (and, in the case of some of such accounts at GAMCO, may be through borrowings from client margin accounts) in order to purchase the additional Securities for such clients. GCIA used approximately $5,933,547 of client funds to purchase the additional Securities reported by it. AC used approximately $149,680 of its working capital to purchase the additional securities reported by it.

Item 5. Interest In Securities Of The Issuer

Item 5 to Schedule 13D is amended, in pertinent part, as follows:

(a) The aggregate number of Securities to which this Schedule 13D relates is 3,007,367 shares, representing 6.88% of the 43,737,010 shares outstanding as reported by the Issuer as of October 30, 2018. The Reporting Persons beneficially own those Securities as follows:

Name	Shares of Common Stock	% of Class of Common
GAMCO Gabelli Funds Teton GCIA AC MJG Associates	652,915 1,617,060 44,000 634,592 14,800 44,000	1.49% 3.70% 0.10% 1.45% 0.03% 0.10%

Mario Gabelli is deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons. GCIA is deemed to have beneficial ownership of the Securities owned beneficially by G.research. AC, GBL and GGCP are deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons other than Mario Gabelli and the Foundation.

(b) Each of the Reporting Persons and Covered Persons has the sole power to vote or direct the vote and sole power to dispose or to direct the disposition of the Securities reported for it, either for its own benefit or for the benefit of its investment clients or its partners, as the case may be, except that (i) GAMCO does not have the authority to vote 53,000 of its reported shares, (ii) Gabelli Funds has sole dispositive and voting power with respect to the shares of the Issuer held by the Funds so long as the aggregate voting interest of all joint filers does not exceed 25% of their total voting interest in the Issuer and, in that event, the Proxy Voting Committee of each Fund shall respectively vote that Fund's shares, (iii) at any time, the Proxy Voting Committee of each such Fund may take and exercise in its sole discretion the entire voting power with respect to the shares held by such fund under special circumstances such as regulatory considerations, and (iv) the power of Mario Gabelli, AC, GBL, and GGCP is indirect with respect to Securities beneficially owned directly by other Reporting Persons.

(c) Information with respect to all transactions in the Securities which were effected during the past sixty days or since the most recent filing on Schedule 13D, whichever is less, by each of the Reporting Persons and Covered Persons is set forth on Schedule II annexed hereto and incorporated herein by reference.

(e) Not applicable.

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: November 9, 2018

GGCP, INC.

MARIO J. GABELLI

By:/s/ David Goldman

David Goldman

Attorney-in-Fact

GABELLI FUNDS, LLC

TETON ADVISORS, INC.

By:/s/ David Goldman

David Goldman

General Counsel – Gabelli Funds, LLC

Counsel-Teton Advisors, Inc.

GAMCO INVESTORS, INC.

By:/s/ Kevin Handwerker

Kevin Handwerker

General Counsel & Secretary – GAMCO Investors, Inc.

ASSOCIATED CAPITAL GROUP, INC.

GAMCO ASSET MANAGEMENT INC.

GABELLI & COMPANY INVESTMENT ADVISERS, INC.

By:/s/ Douglas R. Jamieson

Douglas R. Jamieson

President & Chief Executive Officer – Associated Capital

Group, Inc.

President – GAMCO Asset Management Inc.

President – Gabelli & Company Investment Advisers, Inc.

SCHEDULE I

Information with Respect to Executive

Officers and Directors of the Undersigned

Schedule I to Schedule 13D is amended, in pertinent part, as follows:

The following sets forth as to each of the executive officers and directors of the undersigned: his name; his business address; his present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted. Unless otherwise specified, the principal employer of each such individual is GAMCO Asset Management Inc., Gabelli Funds, LLC, Gabelli & Company Investment Advisers, Inc., G.research, LLC, Teton Advisors, Inc., Associated Capital Group, Inc. or GAMCO Investors, Inc., the business address of each of which is One Corporate Center, Rye, New York 10580, and each such individual identified below is a citizen of the United States. To the knowledge of the undersigned, during the last five years, no such person has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors), and no such person was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities law or finding any violation with respect to such laws except as reported in Item 2(d) and (e) of this Schedule 13D.

GAMCO Investors, Inc. Directors:
Edwin L. Artzt Raymond C. Avansino Leslie B. Daniels		Former Chairman and Chief Executive Officer Procter & Gamble Company 900 Adams Crossing Cincinnati, OH 45202 Chairman & Chief Executive Officer E.L. Wiegand Foundation 165 West Liberty Street Reno, NV 89501 Operating Partner AE Industrial Partners, LP 2500 N. Military Trail, Suite 470 Boca Raton, FL 33431
Mario J. Gabelli Elisa M. Wilson		Chief Executive Officer and Chief Investment Officer of GGCP, Inc. Chairman & Chief Executive Officer of GAMCO Investors, Inc. Executive Chairman of Associated Capital Group, Inc. Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC. Director c/o GAMCO Investors, Inc. One Corporate Center Rye, NY 10580

Eugene R. McGrath		Former Chairman and Chief Executive Officer Consolidated Edison, Inc. 4 Irving Place New York, NY 10003
Robert S. Prather		President & Chief Executive Officer Heartland Media, LLC 1843 West Wesley Road Atlanta, GA 30327
Officers:
Mario J. Gabelli		Chairman and Chief Executive Officer
Henry G. Van der Eb Bruce N. Alpert Agnes Mullady Kevin Handwerker Kieran Caterina Diane LaPointe		Senior Vice President Senior Vice President Senior Vice President Executive Vice President, General Counsel and Secretary Co-Chief Accounting Officer Co-Chief Accounting Officer


GAMCO Asset Management Inc. Directors:
Douglas R. Jamieson Regina M. Pitaro William S. Selby
Officers:
Mario J. Gabelli		Chief Executive Officer and Chief Investment Officer – Value Portfolios
Douglas R. Jamieson David Goldman		President, Chief Operating Officer and Managing Director General Counsel, Secretary & Chief Compliance Officer
Gabelli Funds, LLC Officers:
Mario J. Gabelli		Chief Investment Officer – Value Portfolios
Bruce N. Alpert		Executive Vice President and Chief Operating Officer
Agnes Mullady		President and Chief Operating Officer – Open End Fund Division
David Goldman		General Counsel

Gabelli Foundation, Inc. Officers:
Mario J. Gabelli	Chairman, Trustee & Chief Investment Officer
Elisa M. Wilson Marc Gabelli Matthew R. Gabelli Michael Gabelli	President Trustee Trustee Trustee

GGCP, Inc. Directors:
Mario J. Gabelli	Chief Executive Officer and Chief Investment Officer of GGCP, Inc. Chairman & Chief Executive Officer of GAMCO Investors, Inc. Executive Chairman of Associated Capital Group, Inc. Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
Marc Gabelli	President – GGCP, Inc.
Matthew R. Gabelli	Vice President – Trading G.research, LLC One Corporate Center Rye, NY 10580
Michael Gabelli	President & COO Gabelli & Partners, LLC One Corporate Center Rye, NY 10580
Frederic V. Salerno	Chairman Former Vice Chairman and Chief Financial Officer Verizon Communications
Vincent S. Tese	Executive Chairman – FCB Financial Corp

Officers:
Mario J. Gabelli	Chief Executive Officer and Chief Investment Officer
Marc Gabelli	President
Francis J. Conroy	Special Assistant to CEO, Secretary
Silvio A. Berni	Chief Financial and Accounting Officer, Vice President Corporate Development and Controller, Assistant Secretary

GGCP Holdings LLC Members: GGCP, Inc. Mario J. Gabelli	Manager and Member Member

Teton Advisors, Inc. Directors:
Stephen G. Bondi Nicholas F. Galluccio Vincent J. Amabile John M. Tesoro, CPA Aaron J. Feingold, M.D.	Chairman of the Board Chief Executive Officer and President Founder- Amabile Partners Retired Partner – KPMG LLP President and Founder – Raritan Bay Cardiology Group
Officers:
Nicholas F. Galluccio Michael J. Mancuso Tiffany Hayden	See above Chief Financial Officer Secretary

Associated Capital Group, Inc. Directors:
Mario J. Gabelli	Chief Executive Officer and Chief Investment Officer of GGCP, Inc. Chairman & Chief Executive Officer of GAMCO Investors, Inc. Executive Chairman of Associated Capital Group, Inc. Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
Richard L. Bready	Former Chairman and Chief Executive Officer Nortek, Inc. 50 Kennedy Plaza Providence, RI 02903
Marc Gabelli	President – GGCP, Inc.
Douglas R. Jamieson	President and Chief Executive Officer
Bruce Lisman	Former Chairman - JP Morgan – Global Equity Division
Daniel R. Lee	Chief Executive Officer Full House Resorts, Inc. 4670 South Ford Apache Road, Suite 190 Las Vegas, NV 89147
Salvatore F. Sodano	Vice Chairman – Broadridge Financial Solutions
Frederic V. Salerno	See above
Officers:
Mario J. Gabelli Douglas R. Jamieson Francis J. Conroy Kevin Handwerker David Fitzgerald	Executive Chairman President and Chief Executive Officer Interim Chief Financial Officer Executive Vice President, General Counsel and Secretary Assistant Secretary

Gabelli & Company Investment Advisers, Inc.
Directors:
Douglas R. Jamieson

Officers:
Douglas R. Jamieson Francis J. Conroy John Givissis Kevin Handwerker David Fitzgerald	Chief Executive Officer and President Chief Financial Officer Controller Secretary Assistant Secretary
G.research, LLC
Officers:
Cornelius V. McGinity Maria Gigi	President Controller and Financial Operations Principal
Bruce N. Alpert Douglas R. Jamieson Kevin Handwerker David Fitzgerald David Goldman Josephine D. LaFauci	Vice President Secretary Assistant Secretary Assistant Secretary Assistant Secretary Chief Compliance Officer

SCHEDULE II

INFORMATION WITH RESPECT TO

TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR

SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)

SHARES PURCHASED AVERAGE

DATE SOLD(-) PRICE(2)

COMMON STOCK-K2M GROUP HOLDINGS, INC.

GAMCO ASSET MANAGEMENT INC.

11/08/18 11,950 27.4643

11/08/18 11,900 27.4600

11/07/18 1,000- 26.9500

11/07/18 7,700- 26.9163

11/05/18 4,500- 26.4056

11/05/18 1,200 26.3000

11/02/18 2,900 26.9421

11/02/18 7,550 26.5661

10/26/18 4,000- *DO

10/25/18 100 27.2400

10/24/18 255- *DO

10/24/18 500- 27.2815

10/24/18 255- *DO

10/24/18 81 27.2472

10/24/18 510 *DI

10/23/18 1,200- 27.2959

10/23/18 2,000- 27.3112

10/23/18 300- *DO

10/22/18 5,250 27.2500

10/19/18 5,300 27.2450

10/18/18 10,000 27.4400

10/17/18 242 27.3779

10/17/18 60 27.3778

10/16/18 3,950 27.3690

10/15/18 500- 27.3416

10/05/18 500- 27.3611

10/04/18 3,000 27.2700

GABELLI & COMPANY INVESTMENT ADVISERS,INC.

11/08/18 16,400 27.4643

11/08/18 14,000 27.4600

11/05/18 1,500 26.3000

11/02/18 10,000 26.5661

10/25/18 100 27.2400

10/24/18 1,000 27.2200

10/22/18 7,900 27.2500

10/19/18 8,000 27.2450

10/16/18 500 27.3690

10/04/18 1,700 27.2700

10/03/18 81 27.2899

GABELLI ASSOCIATES LTD II E

11/08/18 6,300 27.4600

11/08/18 7,200 27.4643

11/05/18 800 26.3000

11/02/18 4,800 26.5661

10/24/18 300 27.2200

10/22/18 3,600 27.2500

10/19/18 3,500 27.2450

10/16/18 100 27.3690

10/04/18 800 27.2700

GABELLI ASSOCIATES LTD

11/08/18 13,500 27.4600

11/08/18 6,100 27.4643

10/24/18 1,200 27.2200

10/22/18 8,900 27.2500

10/19/18 9,100 27.2450

10/16/18 100 27.3690

10/04/18 1,700 27.2700

GABELLI ASSOCIATES FUND II

11/08/18 6,100 27.4643

11/08/18 5,200 27.4600

11/05/18 700 26.3000

11/02/18 3,200 26.5661

10/24/18 300 27.2200

10/22/18 2,900 27.2500

10/19/18 3,100 27.2450

10/04/18 800 27.2700

GABELLI ASSOCIATES FUND

11/08/18 17,800 27.4643

11/08/18 15,300 27.4600

11/05/18 1,800 26.3000

11/02/18 11,000 26.5661

10/24/18 700 27.2200

10/22/18 8,700 27.2500

10/19/18 8,800 27.2450

10/16/18 400 27.3690

10/04/18 1,900 27.2700

GABELLI FUNDS, LLC.

GABELLI VALUE PLUS+ TRUST

10/24/18 10,000- 27.2800

GABELLI SMALL CAP GROWTH FUND

11/07/18 3,373- 26.9600

THE GDL FUND

11/08/18 40,000 27.4650

10/23/18 20,000 27.3098

10/12/18 6,000 27.3300

10/10/18 4,000 27.3700

10/08/18 19,000 27.3698

10/04/18 6,217 27.2784

GABELLI ENTERPRISE MERGERS & ACQUISITIONS FUND

11/08/18 50,000 27.4897

GAMCO MERGER ARBITRAGE

11/08/18 32,600 27.4600

11/08/18 37,950 27.4643

11/05/18 3,900 26.3000

11/02/18 22,450 26.5661

10/24/18 1,741 27.2200

10/22/18 14,450 27.2500

10/19/18 11,500 27.2450

10/16/18 5,150 27.3690

GAMCO ALL CAP VALUE

11/02/18 700 26.8100

GABELLI ABC FUND

10/10/18 25,000 27.3700

ASSOCIATED CAPITAL GROUP INC.

11/08/18 1,500 27.4643

11/08/18 1,200 27.4600

11/05/18 100 26.3000

11/02/18 1,000 26.5661

10/22/18 800 27.2500

10/19/18 700 27.2450

10/16/18 100 27.3690

10/04/18 100 27.2700

(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED

ON THE NASDAQ GLOBAL SECURITIES MARKET.

(2) PRICE EXCLUDES COMMISSION.

(*) RESULTS IN CHANGE OF DISPOSITIVE POWER AND BENEFICIAL OWNERSHIP.

K2M GROUP HOLDINGS, INC. SC 13D/A